10 Thrust ball bearings

Transcription

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2 10 Thrust ball bearings Designs and variants Single direction thrust ball bearings Double direction thrust ball bearings Cages Bearings with sphered housing washers 1011 Bearing data (Dimension standards, tolerances, misalignment, friction, starting torque, power loss, defect frequencies) Loads (Minimum load, equivalent loads) Temperature limits Permissible speed Product tables 10.1 Single direction thrust ball bearings Single direction thrust ball bearings with a sphered housing washer Double direction thrust ball bearings Double direction thrust ball bearings with sphered housing washers Other thrust ball bearings Bearings with Solid Oil SKF DryLube bearings NoWear coated bearings Polymer ball bearings Mounting Designation system

3 10 Thrust ball bearings Designs and variants SKF thrust ball bearings are manufactured as single direction or double direction thrust ball bearings. They are designed to accommodate axial loads only and must not be subjected to any radial load. SKF thrust ball bearings are separable, i.e. the shaft washer, housing washer(s), ball and cage assembly(s) can be mounted separately. Shaft washers have a ground bore to enable an interference fit. The bore of the housing washer is turned and always larger than the shaft washer bore. Single direction thrust ball bearings SKF single direction thrust ball bearings consist of a shaft washer, a housing washer and a ball and cage assembly ( fig. 1). As their name implies, single direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in one direction only. Fig. 1 Shaft washer Housing washer Fig. 2 Housing washers Double direction thrust ball bearings SKF double direction thrust ball bearings consist of one shaft washer, two housing washers and two ball and cage assemblies ( fig. 2). The housing washers and ball and cage assemblies of double direction bearings are identical to those used in single direction bearings. Double direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in both directions. Shaft washer More information Bearing life and load ratings Design considerations Recommended fits Abutment and fillet dimensions Lubrication Mounting, dismounting and bearing care Cages Depending on their series and size, SKF thrust ball bearings are fitted with one of the cages shown in table 1. The lubricants generally used for rolling bearings do not have a detrimental effect on cage properties. For additional information about the suitability of cages, refer to Cages ( page 37) and Cage materials ( page 152). 1010

4 Designs and variants Bearings with sphered housing washers To accommodate initial misalignment between the shaft and housing, SKF supplies both single and double direction thrust ball bearings with sphered seat surfaces on the housing washers ( fig. 3). They can be used together with a sphered seat washer adjacent to the housing washer ( figs. 4 and 5) or adjacent to a machine component manufactured with a sphered surface. Appropriate sphered seat washers must be ordered separately ( product tables). Depending on the bearing series, they have the basic designation U 2, U 3 or U 4 followed by a two-digit number, which identifies the size (e.g. sphered seat washer U 320 for bearing 53320). Shaft washer Housing washer Fig. 3 Fig. 4 Table 1 Cages for thrust ball bearings Housing washer Seat washer 10 Fig. 5 Cage description Stamped steel, ball centred Machined brass, ball centred Machined steel, ball centred Suffix M F Housing washers Seat washers 1011

5 10 Thrust ball bearings Bearing data Thrust ball bearings Dimension standards with flat housing washers ISO 104 Bearings in the BA series are not standardized. with sphered housing washer(s) ISO Tolerances For additional information ( page 132) Normal P5 or P6 on request (single direction bearings only) Normal Values: ISO 199 ( table 10, page 144) Bearings in the BA series are not standardized. Misalignment Accommodate initial misalignment between the support surfaces in the housing and on the shaft. Friction, starting torque, power loss Defect frequencies Frictional moment, starting torque, and power loss can be calculated as specified under Friction ( page 97), or using the tools available online at skf.com/bearingcalculator. Defect frequencies can be calculated using the tools available online at skf.com/bearingcalculator. 1012

6 Loads Loads Minimum load For additional information ( page 86) Equivalent dynamic bearing load For additional information ( page 85) Equivalent static bearing load q n w 2 F am = A < z The weight of the components supported by the bearing, particularly when the shaft is vertical, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional axial load, e.g. by springs. P = F a P 0 = F a Symbols A = minimum load factor ( product tables) F a = axial load [kn] F am = minimum axial load [kn] n P = rotational speed [r/min] = equivalent dynamic bearing load [kn] P 0 = equivalent static bearing load [kn] For additional information ( page 88)

7 10 Thrust ball bearings Temperature limits The permissible operating temperature for thrust ball bearings can be limited by: the dimensional stability of the bearing washers and balls the cage the seat washer(s) the lubricant Mounting When installing a single direction thrust ball bearing it is important to differentiate between the shaft washer and the housing washer. The bore of the shaft washer is ground and always smaller than the bore of the housing washer. The shaft washer should always be placed against a shaft step or fixed shaft component. When temperatures outside the permissible range are expected, contact the SKF application engineering service. Bearing washers and balls The washers and balls of SKF thrust ball bearings undergo a special heat treatment. De pending on their size they are heat stabilized up to: 125 C (260 F) when d 300 mm 150 C (300 F) when d > 300 mm Cages Steel and brass cages can be used at the same operating temperatures as the bearing washers and balls. Seat washers Seat washers are made of steel and can be used at the same operating temperatures as the bearing washers and balls. Lubricants Temperature limits for SKF greases are provided under Lubrication ( page 239). When using lubricants not supplied by SKF, the temperature limits should be evaluated according to the SKF traffic light concept ( page 244). Permissible speed The permissible speed can be estimated using the speed ratings listed in the product tables and applying the information provided under Speeds ( page 117). 1014

8 Designation system Designation system Group 1 Group 2 Group 3 / Group Prefixes Basic designation Listed in diagram 2 ( page 43) BA. Thrust ball bearing, bore diameter d < 10 mm The one-digit number after BA identifies the bore diameter. Suffixes Group 1: Internal design Group 2: External design (seals, snap ring groove etc.) Group 3: Cage design F M Machined steel cage, ball centred Machined brass cage, ball centred Group 4.1: Materials, heat treatment Group 4.2: Accuracy, clearance, preload, quiet running P5 P6 Dimensional and running accuracy to P5 tolerance class Dimensional and running accuracy to P6 tolerance class Group 4.3: Bearing sets, matched bearings Group 4.4: Stabilization Group 4.5: Lubrication 10 Group 4.6: Other variants 1015

9 10.1 Single direction thrust ball bearings d 3 30 mm r 2 r 2 d 1 d D 1 D H Principal dimensions Basic load ratings Fatigue dynamic static load limit d D H C C 0 P u A Minimum load factor Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg 3 8 3,5 0,806 0,72 0,027 0, ,0009 BA ,761 0,72 0,027 0, ,0015 BA ,852 0,965 0,036 0, ,0021 BA ,78 1,92 0,071 0, ,0035 BA ,51 2,9 0,108 0, ,0065 BA ,19 3,8 0,143 0, ,0091 BA ,12 3,8 0,143 0, ,01 BA ,95 15,3 0,56 0, , ,7 18,6 0,695 0, , ,4 16,6 0,62 0, , ,3 20,8 0,765 0, , ,6 18,3 0,67 0, , ,9 25 0,915 0, , ,4 21,2 0,78 0, , , , , ,1 29 1,08 0, , ,2 37,5 1,4 0, , ,2 39 1,43 0, , ,5 50 1,86 0, , ,5 60 2,24 0, , ,3 67 2,45 0, , ,6 0, , ,1 51 1,86 0, , ,8 65,5 2,4 0, , , ,5 0, ,

10 d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1,2 d a D a r a ~ ~ min. min. max. max. mm mm 3 7,8 3,2 0,15 5,8 5 0,15 4 9,8 4,2 0,15 7,5 6,5 0, ,8 5,2 0, , ,8 6,2 0,2 11 9,5 0,2 7 16,8 7,2 0,2 12,5 11 0,2 8 18,8 8,2 0,3 14,5 12,5 0,3 9 19,8 9,2 0,3 15,5 13,5 0, , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

11 10.1 Single direction thrust ball bearings d mm r 2 r 2 d 1 d D 1 D H Principal dimensions Basic load ratings Fatigue dynamic static load limit d D H C C 0 P u A Minimum load factor Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg ,9 51 1,86 0, , ,1 73,5 2,7 0, , ,4 96,5 3,55 0, , , ,1 0, , ,5 63 2,32 0, , ,2 96,5 3,6 0, , , ,5 0, , , ,8 0, , ,5 69,5 2,55 0, , ,5 3,2 0, , , ,6 0, , , , ,8 0, , , ,3 0, , , ,3 0, , ,5 0, ,2 81,5 3 0, , , ,9 0, , ,3 0, , ,6 0, , , ,55 0, , , ,1 0, , ,3 0, , , , M , , , , ,5 0, , ,8 0, , , M , ,4 0, , , ,85 0, , ,8 0, ,3 1, M 1018

12 d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1,2 d a D a r a ~ ~ min. min. max. max. mm mm , , , , , , , , , , , , , , , , , , , , , , , ,

13 10.1 Single direction thrust ball bearings d mm r 2 r 2 d 1 d D 1 D H Principal dimensions Basic load ratings Fatigue dynamic static load limit d D H C C 0 P u A Minimum load factor Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg , ,9 0, , , ,2 0, , , , ,8 1, , M , ,1 0, , , ,65 0, , ,7 0, , , , M , ,4 0, , , ,8 0, , , , , , M , ,5 0, , ,4 0, , ,6 1, , ,5 3, M , ,15 0, , ,8 0, , ,3 1, , ,5 5, M , ,5 0, , ,6 0, , , ,5 3, , M ,5 7, M , ,65 0, , , , , M , M ,4 0, , , , M M 1020

14 d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1,2 d a D a r a ~ ~ min. min. max. max. mm mm , , , , , , , , , , , , , , , , , , , , , , ,

15 10.1 Single direction thrust ball bearings d mm r 2 r 2 d 1 d D 1 D H Principal dimensions Basic load ratings Fatigue dynamic static load limit d D H C C 0 P u A Minimum load factor Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg , , , , ,5 9, , M , M , , M , , M , M , M ,9 1, , M ,4 3, , M , M ,3 1, , M , , M M , , M ,5 6, , M , , M , , M , M , M ,6 2, , M ,5 9, M , , M , , M , M ,6 5, , M , M , , M , M , M , , M 1022

16 d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1,2 d a D a r a ~ ~ min. min. max. max. mm mm , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

17 10.1 Single direction thrust ball bearings d mm r 2 r 2 d 1 d D 1 D H Principal dimensions Basic load ratings Fatigue dynamic static load limit d D H C C 0 P u A Minimum load factor Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg , , M M , M , F , , M , , F F , F F F , F , , F F , F , F /500 F ,5 511/530 F /560 F , /600 F , /630 F , /670 F 1024

18 d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1,2 d a D a r a ~ ~ min. min. max. max. mm mm , , , , , , , , , , ,

19 10.2 Single direction thrust ball bearings with a sphered housing washer d mm R d 1 d D 1 D r 2 s H C D 2 D 3 r 2 H 1 Principal dimensions Basic load ratings dynamic static Fatigue load limit d D H 1 C C 0 P u A Minimum load factor Speed ratings Mass Designations Reference Limiting Bearing speed speed Bearing incl. washer Seat washer mm kn kn r/min kg ,3 20,8 0,765 0, , U ,9 25 0,915 0, , U , , , U ,2 37,5 1,4 0, , U ,5 50 1,86 0, , U ,1 51 1,86 0, , U ,8 65,5 2,4 0, , U ,1 73,5 2,7 0, , U ,4 96,5 3,55 0, , U ,2 96,5 3,6 0, , U , ,5 0, , U , ,8 0, , U ,5 3,2 0, , U , ,6 0, , U , ,3 0, , U , ,3 0, , U ,5 0, , U , ,9 0, , U ,3 0, , U ,6 0, , U , ,1 0, , U ,3 0, , U , , M U , ,5 0, , U ,8 0, , U , ,85 0, , U ,8 0, , U ,3 1, , M U

20 R d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1 D 2 D 3 H C R s,2 d a D a r a ~ ~ min. min. max. max. mm mm ,4 3, ,5 0, , , , , , , , , , , ,7 5, , , ,8 5, , , , , ,6 7, , , ,5 8, , , ,3 7, , ,5 7, , , , , , , , ,3 11, , ,5 15, , , , ,3 11, , , , ,4 12, ,5 1, , , ,6 19,

21 10.2 Single direction thrust ball bearings with a sphered housing washer d mm R d 1 d D 1 D r 2 s H C D 2 D 3 r 2 H 1 Principal dimensions Basic load ratings dynamic static Fatigue load limit d D H 1 C C 0 P u A Minimum load factor Speed ratings Mass Designations Reference Limiting Bearing speed speed Bearing incl. washer Seat washer mm kn kn r/min kg , ,2 0, U , , U ,8 1, , M U , ,65 0, , U ,7 0, , U , , , U , , U ,4 0, , U ,6 1, , U ,5 3, M U ,8 0, , U ,3 1, , U ,5 5, M U ,6 0, , U ,5 3, , M U , , U , , M U , , U , , U

22 R d a r a r a D a Dimensions Abutment and fillet dimensions d d 1 D 1 D 2 D 3 H C R s,2 d a D a r a ~ ~ min. min. max. max. mm mm ,3 9, , , , , , , ,1 17, , ,5 13, , , , ,2 25, , , , , , , , , , , , , , , , ,

23 10.3 Double direction thrust ball bearings d mm d B r 4 r 3 H D 1 D r 2 Principal dimensions Basic load ratings dynamic static Fatigue load limit d D H C C 0 P u A Minmum load factor Speed ratings Mass Designation Reference speed Limiting speed mm kn kn r/min kg , , , ,2 37,5 1,4 0, , ,5 50 1,86 0, , ,5 60 2,24 0, , , ,5 0, ,7 46,5 1,86 0, , ,8 65,5 2,4 0, , , ,1 0, , ,1 73,5 2,7 0, , ,2 96,5 3,6 0, , ,4 96,5 3,55 0, , , ,5 0, , , ,8 0, , ,5 3,2 0, , , ,6 0, , , , , ,3 0, , , ,3 0, , , ,9 0, , ,3 0, , ,6 0, , , ,1 0, , ,3 0, , , , M , ,5 0, , , ,85 0, , ,8 0, , ,8 0, , ,3 1, , M , ,2 0, , , ,

24 D a d a r a r b Dimensions Abutment and fillet dimensions d D 1 B,2 r 3,4 d a D a r a r b ~ min. min. max. max. max. mm mm ,6 0, ,6 0, ,6 0, ,6 0, ,6 0, ,6 0, , , , , ,6 0, ,6 0, , , ,1 0, , , , , , , , , , ,1 0, , , , , , ,1 0, , , , ,1 0, , , , ,1 0, , ,5 0, ,5 0, , , ,1 0, , ,5 0, ,5 0, , , ,1 0, , , , , ,

25 10.3 Double direction thrust ball bearings d mm d B r 4 r 3 H D 1 D r 2 Principal dimensions Basic load ratings dynamic static Fatigue load limit d D H C C 0 P u A Minmum load factor Speed ratings Mass Designation Reference speed Limiting speed mm kn kn r/min kg , ,65 0, , ,7 0, , , ,8 0, , , , ,8 0, , ,3 1, , ,6 0, , , , , , , , , M ,4 3, M , M ,5 6, M 1032

26 D a d a r a r b Dimensions Abutment and fillet dimensions d D 1 B,2 r 3,4 d a D a r a r b ~ min. min. max. max. max. mm mm , , , , , ,1 1, ,5 1, , ,5 1, , ,5 1, , ,5 1, , ,5 1, , , ,

27 10.4 Double direction thrust ball bearings with sphered housing washers d mm d s B r 4 r 3 H H 1 R D 1 D C D 2 D 3 r 2 Principal dimensions Basic load ratings Fatigue Minimum Speed ratings Mass Designations dynamic static load limit load factor Reference speed Limiting speed Bearing incl. Bearing Seat washer d D H 1 C C 0 P u A washer mm kn kn r/min kg ,8 65,5 2,4 0, , U ,1 73,5 2,7 0, , U ,2 96,5 3,6 0, , U ,4 96,5 3,55 0, , U , ,5 0, , U ,5 3,2 0, , U , ,6 0, , U , U , ,3 0, , U ,4 0, , U , ,9 0, , U ,3 0, , U ,7 0, , U , , M U , , U ,5 5, M U

28 D a d a r a r b R Dimensions Abutment and fillet dimensions d D 1 D 2 D 3 H B C R s,2 r 3,4 d a D a r a r b ~ min. min. max. max. max. mm mm , ,5 1 0, , , , , , , , ,2 10 7, , , ,1 12 8, ,5 1 0, , ,6 9 7, , , , , , , , ,5 1,1 0, , , ,1 0, , , ,5 0, ,5 0, , ,5 1 0, , , , ,5 1,1 0, , , ,5 1, , , ,5 2, , , , , , ,5 3 1, ,

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30 10 Cylindrical roller thrust bearings Designs and variants Single direction cylindrical roller thrust bearings Double direction cylindrical roller thrust bearings Components Bearing washers Cages Product table 11.1 Cylindrical roller thrust bearings Bearing data (Dimension standards, tolerances, misalignment, friction, starting torque, power loss, defect frequencies) Loads (Minimum load, equivalent loads) Temperature limits Permissible speed Design of bearing arrangements Abutment dimensions Raceways on shafts and in housings Designation system

31 11 Cylindrical roller thrust bearings Designs and variants SKF cylindrical roller thrust bearings are designed to accommodate heavy axial loads and shock loads. They must not be subjected to any radial load. The ends of the rollers are relieved slightly to modify the line contact between the raceways and rollers. This prevents stress peaks at the roller ends to extend bearing service life. Cylindrical roller thrust bearings are very stiff and require little axial space. They are separable, that means that shaft washer, housing washer, and cylindrical roller and cage thrust assembly can be mounted separately. Cylindrical roller thrust bearings are manufactured with one or two rows of rollers ( fig. 1). Bearings in the 811 and 812 series are mainly used in applications where thrust ball bearings do not have sufficient load carrying capacity. Fig. 1 Housing washer Shaft washer Single row bearing, 811 and 812 series Housing washer Single direction cylindrical roller thrust bearings As standard, cylindrical roller thrust bearings are available as single direction bearings ( fig. 1) and can accommodate axial loads in one direction only. Shaft washer Double row bearing, 893 and 894 series Double direction cylindrical roller thrust bearings Double direction cylindrical roller thrust bearings can accommodate axial loads in both Intermediate washer Fig. 2 More information Bearing life and load ratings Design considerations Abutment and fillet dimensions Lubrication Mounting, dismounting and bearing care Shaft centred bearing Intermediate washer Housing centred bearing 1038

32 Designs and variants directions. They can be created by combining two cylindrical roller and cage thrust assemblies and two bearing washers with an intermediate washer. Depending on the design, an intermediate washer can be shaft or housing centred ( fig. 2). Intermediate washers must have the same surface finish and hardness as bearing washers. SKF does not supply intermediate washers, but provides material specifications and dimensional data on request For additional information, refer to Design of bearing arrangements ( page 1046). Prefix K Fig. 3 Components SKF can supply the components of cylindrical roller thrust bearings ( fig. 3) separately. The components are listed in the product tables and include: cylindrical roller and cage thrust assemblies (prefix K) shaft washers (prefix WS) housing washers (prefix GS) Prefix WS Single components might be required for applications where: The faces of adjacent machine components can serve as raceways and bearing arrangements with a low axial section height are required. Other combinations of cylindrical roller and cage thrust assemblies and washers are required, for example with two shaft or housing washers. Bearing washers SKF supplies bearing washers in different designs and series. Bearing washers are required in cases where adjacent machine components cannot serve as raceways. Appropriate washers are listed in the product tables. Shaft and housing washers Shaft washers (prefix WS) and housing washers (prefix GS) are made of hardened carbon chromium bearing steel. The raceway surfaces are precision ground. Shaft washers have a ground bore while housing washers have a ground outside surface. Therefore, SKF rec- Prefix GS ommends using these washers in high-speed applications where accurate centring of the bearing washers is required. LS series universal washers LS series universal washers can be used as both shaft or housing washers for bearings in the 811 series. These washers are used for applications where accurate centring of the bearing washers is not necessary or where slow speeds are involved. For additional information about these washers, refer to Needle roller thrust bearings ( page 1057)

33 11 Cylindrical roller thrust bearings Cages Depending on their series and size, SKF cylindrical roller thrust bearings are fitted with one of the cages shown in table 1. The lubricants generally used for rolling bearings do not have a detrimental effect on cage properties. However, some synthetic oils and greases with a synthetic oil base and lubricants containing a high proportion of EP additives, when used at high temperatures, can have a detrimental effect on polyamide cages. For additional information about the suitability of cages, refer to Cages ( page 37) and Cage materials ( page 152). Cages for cylindrical roller thrust bearings Table 1 Material Glass fibre reinforced PA66 Machined brass Suffix TN M 1040

34 Bearing data Bearing data Dimension standards Tolerances For additional information ( page 132) Misalignment Friction, starting torque, power loss Defect frequencies Boundary dimensions: ISO 104 Normal Check availability of P5 for larger bearings Values: ISO 199 ( table 10, page 144) Components: ( table 2, page 1042) Values: ( table 3, page 1043) Variation of gauge lot diameter of the rollers: ISO Cannot tolerate any angular misalignment between the shaft and the housing or between the shaft and the axial support surfaces in the housing. Frictional moment, starting torque and power loss can be calculated as specified under Friction ( page 97), or using the tools available online at skf.com/bearingcalculator. Defect frequencies can be calculated using the tools available online at skf.com/bearingcalculator

35 11 Cylindrical roller thrust bearings Table 2 Tolerances for cylindrical roller thrust bearings D w B B B D d d 1 d D D 1 D d K WS GS LS Bearing component Dimensions Tolerance, tolerance class 1), standard Cylindrical roller and cage thrust assemblies, K Bore diameter d E11 Outside diameter D a13 Roller diameter D w ISO Shaft washers, WS Bore diameter d Normal, ISO 199 Outside diameter d 1 Thickness B h11 Axial run-out s i Normal, ISO 199 Housing washers, GS Outside diameter D Normal, ISO 199 Bore diameter D 1 Thickness B h11 Axial run-out s e Normal, ISO 199 Universal washers, LS Bore diameter d E12 Outside diameter D a12 Thickness B h11 Axial run-out s i Normal, ISO 199 1) All ISO tolerance classes are valid with the envelope requirement (such as H7 E ) in accordance with ISO

36 Bearing data Table 3 ISO tolerance classes Nominal a12 E a13 E E11 E E12 E h11 E dimension Deviations Deviations Deviations Deviations Deviations over incl. high low high low high low high low high low mm µm µm µm µm µm

37 11 Cylindrical roller thrust bearings Loads Minimum load For additional information ( page 86) Equivalent dynamic bearing load For additional information ( page 85) Equivalent static bearing load For additional information ( page 88) Cylindrical roller thrust bearings q n w 2 F am = 0,0005 C 0 + A < z The weight of the components supported by the bearing, particularly when the shaft is vertical, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional axial load by using springs or a shaft nut. P = F a P 0 = F a Symbols A = minimum load factor ( product tables) C 0 = basic static load rating [kn] ( product tables) F a = axial load [kn] F am = minimum axial load [kn] n = rotational speed [r/min] P = equivalent dynamic bearing load [kn] P 0 = equivalent static bearing load [kn] 1044

38 Permissible speed Temperature limits The permissible operating temperature for cylindrical roller thrust bearings can be limited by: the dimensional stability of the bearing washers and rollers the cage the lubricant Permissible speed The permissible speed can be estimated using the speed ratings listed in the product tables and applying the information provided under Speeds ( page 117). When temperatures outside the permissible range are expected, contact the SKF application engineering service. Bearing washers and rollers SKF cylindrical roller thrust bearings undergo a special heat treatment. The bearings are heat stabilized up to at least 120 C (250 F). Cages Brass cages can be used at the same operating temperatures as the bearing washers and rollers. For temperature limits of polymer cages, refer to Cage materials ( page 152). Lubricants Temperature limits for SKF greases are provided under Lubrication ( page 239). When using lubricants not supplied by SKF, the temperature limits should be evaluated according to the SKF traffic light concept ( page 244)

39 11 Cylindrical roller thrust bearings Design of bearing arrangements Abutment dimensions The support surfaces in housings and on shafts should be at right angles to the shaft axis and provide uninterrupted support over the entire washer face. The abutment diameter on the shaft should be d a min and in the housing D a max ( fig. 4). Values for d a min and D a max are listed in the product tables. To provide satisfactory radial guidance for the individual thrust bearing components, suitable tolerance classes for shafts and housings are listed in table 4. A radial gap between the shaft and washer bore is required for housing centred washers. Shaft centred washers require a radial gap between the washer and housing bore. Cylindrical roller and cage thrust assemblies are generally centred radially by the shaft, to reduce the circumferential speed at which the cage slides against the guiding surface. This is particularly important for higher speed applications. The guiding surface should be ground. The dimensions E a and E b ( product tables) take the possible displacement of the roller set into consideration and should be applied when designing raceways on shafts and in housings. For additional information, refer to Raceways on shafts and in housings ( page 210). Raceways on shafts and in housings If the load carrying capacity of a cylindrical roller and cage thrust assembly is to be fully exploited, the raceways on the shaft or in the housing should have the same hardness, surface finish and axial run-out as a bearing washer. Fig. 4 Table 4 Shaft and housing tolerance classes Bearing component Prefix Tolerance class 1) Shaft centred Housing centred d a min Cylindrical roller and cage thrust assemblies K h8 Shaft washers WS h8 Housing washers GS H9 D a max 1) All ISO tolerance classes are valid with the envelope requirement (such as H7 E ) in accordance with ISO

40 Designation system Designation system Group 1 Group 2 Group 3 / Group Prefixes GS K WS Housing washer Cylindrical roller and cage thrust assembly Shaft washer Basic designation Listed in diagram 2 ( page 43) LS.. Universal washer, the number following identifies the bore and outside diameter Suffixes Group 1: Internal design Group 2: External design (seals, snap ring groove etc.) Group 3: Cage design M TN Machined brass cage Glass fibre reinforced PA66 cage Group 4.1: Materials, heat treatment HB1 Bainite-hardened shaft and housing washers Group 4.2: Accuracy, clearance, preload, quiet running P5 Dimensional and running accuracy to P5 tolerance class Group 4.3: Bearing sets, matched bearings Group 4.4: Stabilization Group 4.5: Lubrication 11 Group 4.6: Other variants 1047

41 11.1 Cylindrical roller thrust bearings d mm H r 2 D w B r 2 B r 2 B 45 D D 1 d D E b d E a d 1 d D D 1 D d r2 811, 812 K 811, K , 894 K 893, K 894 WS GS LS Principal dimensions Basic load ratings dynamic static Fatigue load limit Minimum load factor d D H E a E b C C 0 P u A Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg ,2 27 2,45 0, , TN ,2 31,5 2,85 0, , TN ,6 48 4,65 0, , TN ,5 6,8 0, , TN ,65 0, , TN ,4 0, , TN ,3 0, , TN ,15 0, , TN ,3 0, , TN , , TN ,7 0, , TN ,5 0, , TN ,5 0, , TN ,3 0, , TN ,5 0, , TN , , TN , ,6 0, , TN , , , TN , , TN , , , TN , , TN ,5 0, , TN ,5 0, , TN ,5 0, , TN ,5 0, , TN , , TN ,5 0, , TN , , TN ,5 0, , TN , , TN 1048

42 r a r a D a d a max. E a min. E b Dimensions Abutment and fillet dimensions d d 1 D 1 B D w,2 d a D a r a ~ ~ min. min. max. max. mm mm Designation of components Cylindrical roller Shaft and cage thrust washer assembly Housing washer Universal washer ,75 3,5 0, ,3 K TN WS GS LS ,75 3,5 0, ,3 K TN WS GS LS ,75 4,5 0, ,3 K TN WS GS LS , ,6 K TN WS GS LS , ,6 K TN WS GS LS ,25 7,5 0, ,6 K TN WS GS ,25 5, K TN WS GS ,5 5 0, ,6 K TN WS GS LS ,25 7, K TN WS GS K TN WS GS ,5 6 0, ,6 K TN WS GS LS K TN WS GS , K TN WS GS , ,6 K TN WS GS LS , K TN WS GS ,25 7, K TN WS GS , ,6 K TN WS GS LS , K TN WS GS ,5 8 1, ,1 K TN WS GS , ,6 K TN WS GS LS K TN WS GS ,5 9 1, ,1 K TN WS GS ,75 7, K TN WS GS LS , K TN WS GS ,5 9 1, ,1 K TN WS GS , ,5 K TN WS GS ,25 7, K TN WS GS LS K TN WS GS ,5 9 1, ,1 K TN WS GS K TN WS GS

43 11.1 Cylindrical roller thrust bearings d mm H r 2 D w B r 2 B r 2 B 45 D D 1 d D E b d E a d 1 d D D 1 D d r2 811, 812 K 811, K , 894 K 893, K 894 WS GS LS Principal dimensions Basic load ratings dynamic static Fatigue load limit Minimum load factor d D H E a E b C C 0 P u A Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg , ,5 0, , TN , , TN ,5 0, , TN , , TN , , TN , , TN , , TN , , M , , , TN , , TN , , TN , , M ,5 0, , TN , , TN , , M , , M ,5 0, , TN , , TN , , M , , M , , TN , , TN , , M , , M ,5 0, , TN , , TN , , M , , M , , TN ,5 0, , TN , , M , M 1050

44 r a r a D a d a max. E a min. E b Dimensions Abutment and fillet dimensions d d 1 D 1 B D w,2 d a D a r a ~ ~ min. min. max. max. mm mm Designation of components Cylindrical roller Shaft and cage thrust washer assembly Housing washer Universal washer ,25 7, K TN WS GS LS K TN WS GS , ,1 K TN WS GS K TN WS GS ,75 7, K TN WS GS LS K TN WS GS ,5 11 1, ,5 K TN WS GS K M WS GS ,75 7, K TN WS GS LS , K TN WS GS ,5 11 1, ,5 K TN WS GS , ,1 K M WS GS ,75 7, K TN WS GS LS , K TN WS GS ,5 12 1, ,5 K M WS GS ,5 19 2, ,1 K M WS GS , K TN WS GS LS ,5 14 1, ,1 K TN WS GS ,5 12 1, ,5 K M WS GS , ,1 K M WS GS K TN WS GS LS ,5 15 1, ,1 K TN WS GS ,5 13 1, ,5 K M WS GS , K M WS GS K TN WS GS LS ,5 15 1, ,1 K TN WS GS , K M WS GS , K M WS GS K TN WS GS LS , ,1 K TN WS GS ,5 17 2, ,1 K M WS GS K M WS GS

45 11.1 Cylindrical roller thrust bearings d mm H r 2 D w B r 2 B r 2 B 45 D D 1 d D E b d E a d 1 d D D 1 D d r2 811, 812 K 811, K , 894 K 893, K 894 WS GS LS Principal dimensions Basic load ratings dynamic static Fatigue load limit Minimum load factor d D H E a E b C C 0 P u A Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg ,5 0, , TN , TN , M , M , , TN , , M , , M , , M , , TN , , M , M , , M , , TN , , M , M , , TN , , M , M , , M , , M , M , , M , M , , M , , M , , M M , , M , M , M , , M , M 1052

46 r a r a D a d a max. E a min. E b Dimensions Abutment and fillet dimensions d d 1 D 1 B D w,2 d a D a r a ~ ~ min. min. max. max. mm mm Designation of components Cylindrical roller Shaft and cage thrust washer assembly Housing washer Universal washer K TN WS GS LS , ,5 K TN WS GS , ,1 K M WS GS , K M WS GS , K TN WS GS LS ,5 19 1, ,5 K M WS GS ,5 19 2, ,1 K M WS GS , K M WS GS , K TN WS GS LS ,5 21 1, ,5 K M WS GS ,5 19 2, ,1 K M WS GS K M WS GS , K TN WS GS LS , ,5 K M WS GS , K M WS GS , ,1 K TN WS GS ,5 22 1, ,5 K M WS GS , K M WS GS , ,1 K M WS GS , ,5 K M WS GS , K M WS GS , ,1 K M WS GS K M WS GS , K M WS GS , ,1 K M WS GS K M WS GS K M WS GS , ,1 K M WS GS , K M WS GS K M WS GS ,5 18 1, ,5 K M WS GS , ,1 K M WS GS

47 11.1 Cylindrical roller thrust bearings d mm H r 2 D w B r 2 B r 2 D D 1 d D E b d E a d 1 d D D 1 r2 811, 812 K 811, K 812 WS GS Principal dimensions Basic load ratings dynamic static Fatigue load limit Minimum load factor d D H E a E b C C 0 P u A Speed ratings Mass Designation Reference Limiting speed speed mm kn kn r/min kg , , M , M , M , M , , M M , , M , , M , , M , M , , M , , M , M , M , M , , M , M , M , /500 M ,5 811/530 M , /560 M /600 M , /630 M 1054

48 r a r a D a d a max. E a min. E b Dimensions Abutment and fillet dimensions d d 1 D 1 B D w,2 d a D a r a ~ ~ min. min. max. max. Designation of components Cylindrical roller Shaft and cage thrust washer assembly Housing washer mm mm ,5 18 1, ,5 K M WS GS ,5 32 2, ,1 K M WS GS ,5 22 1, ,5 K M WS GS , ,1 K M WS GS , K M WS GS , K M WS GS K M WS GS , , , K M WS GS , , , , , , , , , , , , , ,5 1055

49

50 12 Needle roller thrust bearings Designs and variants Needle roller and cage thrust assemblies Double direction bearings Needle roller thrust bearings with a centring flange Combined needle roller bearing arrangements Bearing washers LS series universal washers AS series thin universal washers series shaft and housing washers Cages Product tables 12.1 Needle roller and cage thrust assemblies and appropriate washers Needle roller thrust bearings with a centring flange and appropriate washers Bearing data (Dimension standards, tolerances, misalignment, friction, starting torque, power loss, defect frequencies) Loads (Minimum load, equivalent loads) Temperature limits Permissible speed Design of bearing arrangements Abutment dimensions Raceways on shafts and in housings Designation system

51 12 Needle roller thrust bearings Designs and variants SKF needle roller thrust bearings are fitted with a form-stable cage to reliably retain and guide a large number of needle rollers. The very small diameter deviation of the rollers within one assembly enables these bearings to accommodate heavy axial loads and shock loads. The ends of the rollers are relieved slightly to modify the line contact between the raceways and rollers. This prevents stress peaks at the roller ends to extend bearing service life. Needle roller thrust bearings provide a high degree of stiffness within a minimum axial space. In applications where the faces of adjacent machine components can serve as raceways, needle roller thrust bearings take up no more space than a conventional thrust washer. SKF supplies needle roller thrust bearings in two designs ( fig. 1): needle roller and cage thrust assemblies, AXK series needle roller thrust bearings with a centring flange, AXW series ( fig. 3) Needle roller and cage thrust assemblies SKF needle roller and cage thrust assemblies in the AXK series ( fig. 1) are available for shaft diameters ranging from 4 to 160 mm. They can be combined with washers in the LS, AS, GS 811 or WS 811 series ( Bearing washers, page 1060) in applications where adjacent components cannot serve as raceways. These thrust assemblies can accommodate axial loads in one direction only. Double direction bearings Double direction needle roller thrust bearings can accommodate axial loads in both directions. They can be created by combining two needle roller and cage thrust assemblies and two bearing washers with an intermediate washer. Depending on the design, an inter medi ate washer can be shaft or housing centred ( fig. 2). Fig. 1 In applications where adjacent components cannot serve as raceways, the assemblies can be combined with bearing washers in different series ( Bearing washers, page 1060). More information Bearing life and load ratings AXK Design considerations Abutment and fillet dimensions Lubrication Mounting, dismounting and bearing care AXW 1058

52 Designs and variants Intermediate washers must have the same hardness and surface finish as bearing washers. SKF does not supply intermediate washers, but provides material specifications and dimensional data on request. For additional information, refer to Design of bearing arrangements ( page 1068). Intermediate washer Fig. 2 Needle roller thrust bearings with a centring flange SKF needle roller thrust bearings in the AXW series ( fig. 3) consist of a needle roller and cage thrust assembly and a thrust washer with a centring flange. The flange facilitates mounting and accurately centres the housing washer radially ( figs. 4 and 5, page 1060). These thrust assemblies, which accommodate axial loads in one direction only, are available for shaft diameters ranging from 10 to 50 mm. Shaft centred bearing Housing centred bearing Intermediate washer Fig

53 12 Needle roller thrust bearings Combined needle roller bearing arrangements To accommodate combined radial and axial loads, needle roller thrust bearings in the AXW series can be combined with the following radial needle roller bearings: Fig. 4 drawn cup needle roller bearings with a closed end or with open ends ( fig. 4) needle roller bearings with machined rings ( fig. 5) These arrangements provide a cost-effective and compact solution for combined loads. Bearing washers SKF supplies bearing washers in different designs and series. The following series can be combined with needle roller thrust bearings: Fig. 5 LS series universal washers AS series thin universal washers 811 series shaft and housing washers Bearing washers are required in applications where adjacent machine components cannot serve as raceways. Appropriate washers are listed in the product tables and must be ordered separately, due to the number of possible combinations. Without an inner ring With an inner ring 1060

54 Designs and variants LS series universal washers LS series universal washers ( fig. 6) are made of hardened carbon chromium bearing steel. They can be used as shaft or housing washers for needle roller thrust bearings in the AXK series and as housing washers for bearings in the AXW series. LS series washers are available for shaft diameters ranging from 6 to 160 mm. The raceway surface is ground, while all other surfaces are turned. These washers are used for applications where accurate centring of the washers is not necessary or where slow speeds are involved. The washer face opposite the side with the chamfers is the raceway surface and should face the rollers. AS series thin universal washers AS series thin universal washers ( fig. 7) are 1 mm thick, made of spring steel and hardened. They can be used as shaft or housing washers for needle roller thrust bearings in the AXK series and as housing washers for bearings in the AXW series. AS series washers are available for shaft diameters ranging from 4 to 160 mm. Both faces are polished and can be used as raceways. If adjacent machine components are not hardened, but have adequate stiffness and the running accuracy requirements are moderate, AS series thin universal washers can be used to provide a cost-effective bearing solution. LS AS Fig. 6 Fig series shaft and housing washers Shaft and housing washers are used primarily with cylindrical roller and cage thrust assemblies. However, 811 series shaft washers (prefix WS) and housing washers (prefix GS) can also be combined with needle roller and cage thrust assemblies. These washers can be used in high-speed applications where accurate centring of the bearing washers is required. For additional information about these washers, refer to Cylindrical roller thrust bearings ( page 1037)

55 12 Needle roller thrust bearings Cages Depending on their series and size, SKF needle roller thrust bearings are fitted with one of the cages shown in table 1. Bearings in the AXW series are fitted exclusively with steel cages. The lubricants generally used for rolling bearings do not have a detrimental effect on cage properties. However, some synthetic oils and greases with a synthetic oil base and lubricants containing a high proportion of EP additives, when used at high temperatures, can have a detrimental effect on polyamide cages. For additional information about the suitability of cages, refer to Cages ( page 37) and Cage materials ( page 152). Cages for needle roller thrust bearings Table 1 Material Machined steel Sheet steel Glass fibre reinforced PA66 Suffix TN 1062

56 Bearing data Bearing data Dimension standards Tolerances For additional information ( page 132) Misalignment Friction, starting torque, power loss Defect frequencies Boundary dimensions: ISO 3031 (where standardized) Bearings in the AXW series are not standardized. Tolerances, tolerance classes, standards ( table 2, page 1064) Values ( table 3, page 1065) Variation of gauge lot diameter of the rollers: ISO 3096, Grade 2 Cannot tolerate any angular misalignment between shaft and housing or between shaft and axial support surfaces in the housing For calculations of the frictional moment, starting torque and power loss, contact the SKF application engineering service. Defect frequencies can be calculated using the tools available online at skf.com/bearingcalculator

57 12 Needle roller thrust bearings Table 2 Tolerances for needle roller thrust bearings D w B B B 1 D w D E b d E a D d D d D d AXK AXW LS AS Bearing, component Dimensions Tolerance, tolerance class 1), standard Needle roller and cage thrust assemblies, AXK Bore diameter d E12 Outside diameter D c13 Roller diameter D w Grade 2, ISO 3096 Needle roller thrust bearings with a centring flange, AXW Bore diameter d E12 Outside diameter D Thickness B 0/ 0,2 mm Roller diameter D w Grade 2, ISO 3096 Universal washers, LS Bore diameter d E12 Outside diameter D a12 Thickness B h11 Axial run-out s i Normal, ISO 199 Thin universal washers, AS Bore diameter d E13 Outside diameter D e13 Thickness (1 mm) B 1 ±0,05 mm 1) All ISO tolerance classes are valid with the envelope requirement (such as H7 E ) in accordance with ISO

58 Bearing data Table 3 ISO tolerance classes Nominal a12 E c13 E e13 E h11 E E12 E E13 E dimension Deviations Deviations Deviations Deviations Deviations Deviations over incl. high low high low high low high low high low high low mm µm µm µm µm µm µm

59 12 Needle roller thrust bearings Loads Minimum load For additional information ( page 86) Equivalent dynamic bearing load For additional information ( page 85) Equivalent static bearing load For additional information ( page 88) Needle roller thrust bearings F am = 0,0005 C 0 The weight of the components supported by the bearing, particularly when the shaft is vertical, together with external forces, generally exceed the requisite minimum load. If this is not the case, the bearing must be subjected to an additional axial load by using springs or a shaft nut. P = F a P 0 = F a Symbols C 0 = basic static load rating [kn] ( product tables) F a = axial load [kn] F am = minimum axial load [kn] P = equivalent dynamic bearing load [kn] P 0 = equivalent static bearing load [kn] 1066

60 Permissible speed Temperature limits The permissible operating temperature for needle roller thrust bearings can be limited by: the dimensional stability of the bearing washers and rollers the cage the lubricant Permissible speed The permissible speed can be estimated using the speed ratings listed in the product tables and applying the information provided under Speeds ( page 117). When temperatures outside the permissible range are expected, contact the SKF application engineering service. Bearing washers and rollers SKF needle roller thrust bearings undergo a special heat treatment. The bearings are heat stabilized up to at least 120 C (250 F). Cages Steel cages can be used at the same operating temperatures as the bearing washers and rollers. For temperature limits of polymer cages, refer to Cage materials ( page 152). Lubricants Temperature limits for SKF greases are provided under Lubrication ( page 239). When using lubricants not supplied by SKF, the temperature limits should be evaluated according to the SKF traffic light concept ( page 244)

61 12 Needle roller thrust bearings Design of bearing arrangements Abutment dimensions The support surfaces on shafts and in housings should be at right angles to the shaft or housing axis and should provide uninterrupted support over the entire washer face. The abutment diameter on the shaft should be E a and in the housing E b. Values for E a and E b ( product tables) take the movement and position of the roller set into consideration. To provide satisfactory radial guidance for the individual thrust bearing components, suitable tolerance classes for shafts and housings are listed in table 4. Radial space between the shaft and washer bore is required for housing centred washers. Shaft centred washers require radial space between the washer and housing bore. Needle roller and cage thrust assemblies in the AXW series are generally combined with drawn cup needle roller bearings ( fig. 4, page 1060) or needle roller bearings with machined rings ( fig. 5, page 1060). The same housing tolerance must be selected for the centring flange as for the radial bearing. Needle roller and cage thrust assemblies are generally shaft centred, to reduce the circumferential speed at which the cage slides against the guiding surface. This is particularly important for higher speed applications. The guiding surface should be ground. Raceways on shafts and in housings If the load carrying capacity of a needle roller and cage thrust assembly is to be fully exploited, the raceways on the shaft or in the housing should have the same hardness, surface finish and axial run-out as a bearing washer. The dimensions E a and E b ( product tables) take displacement of the roller set into consideration and should be applied when designing raceways on shafts and in housings. For additional information, refer to Raceways on shafts and in housings ( page 210). Table 4 Shaft and housing tolerance classes Bearing component Series Tolerance class 1) Shaft centred Housing centred Needle roller and cage thrust assemblies AXK h8 Universal washers LS h8 radial space Thin universal washers AS h8 radial space radial space H9 radial space H9 Shaft washers WS 811 h8 Housing washers GS 811 H9 1) All ISO tolerance classes are valid with the envelope requirement (such as H7 E ) in accordance with ISO

62 Designation system Designation system Group 1 Group 2 Group 3 / Group Prefixes GS WS Housing washer Shaft washer Basic designation 811 dimension series indicates the series and size for shaft and housing washers. AS.. AXK.. AXW.. LS.. Thin universal washer, the number following identifies the bore and outside diameter Needle roller and cage thrust assembly, the number following identifies the bore and outside diameter Needle roller thrust bearing with a centring flange, the number following identifies the bore diameter Universal washer, the number following identifies the bore and outside diameter Suffixes Group 1: Internal design Group 2: External design (seals, snap ring groove etc.) Group 3: Cage design TN Glass fibre reinforced PA66 cage Group 4.1: Materials, heat treatment Group 4.2: Accuracy, clearance, preload, quiet running Group 4.3: Bearing sets, matched bearings Group 4.4: Stabilization Group 4.5: Lubrication Group 4.6: Other variants

63 12.1 Needle roller and cage thrust assemblies and appropriate washers d 4 80 mm D w D E b d E a Principal dimensions Basic load ratings Fatigue Speed ratings Mass Designation dynamic static load limit Reference Limiting speed d D D w E a E b C C 0 P u speed mm kn kn r/min g ,15 8,3 0, ,7 AXK 0414 TN ,5 9,5 1, ,8 AXK 0515 TN ,3 16 1, AXK 0619 TN ,2 20 2, AXK 0821 TN , AXK , , AXK ,4 37,5 4, AXK ,5 4, AXK ,5 5, AXK ,4 60 6, AXK , AXK ,6 83 9, AXK , AXK , AXK , AXK , , AXK , , AXK AXK AXK , AXK AXK

64 B 1 B B 45 r 2 r 2 D d D d d 1 d D D 1 LS AS WS 811 GS 811 Dimensions Masses Designations Washers Universal LS, AS washer d d 1 D D 1 B,2 WS, min. GS Thin universal washer Shaft washer Housing washer mm g AS AS ,75 0,3 6 2 LS 0619 AS ,75 0,3 6 2 LS 0821 AS ,75 0,3 8 3 LS 1024 AS ,75 0,3 9 3 LS 1226 AS ,75 0,3 9 3 LS 1528 AS 1528 WS GS ,75 0,3 9 4 LS 1730 AS 1730 WS GS ,75 0, LS 2035 AS 2035 WS GS , LS 2542 AS 2542 WS GS , LS 3047 AS 3047 WS GS ,5 0, LS 3552 AS 3552 WS GS ,5 0, LS 4060 AS 4060 WS GS , LS 4565 AS 4565 WS GS , LS 5070 AS 5070 WS GS , LS 5578 AS 5578 WS GS , LS 6085 AS 6085 WS GS , LS 6590 AS 6590 WS GS , LS 7095 AS 7095 WS GS , LS AS WS GS , LS AS WS GS

65 12.1 Needle roller and cage thrust assemblies and appropriate washers d mm D w D E b d E a Principal dimensions Basic load ratings Fatigue Speed ratings Mass Designation dynamic static load limit Reference Limiting speed d D D w E a E b C C 0 P u speed mm kn kn r/min g , AXK , AXK , , AXK , AXK , , AXK AXK , AXK AXK AXK

66 B 1 B B 45 r 2 r 2 D d D d d 1 d D D 1 LS AS WS 811 GS 811 Dimensions Masses Designations Washers Universal LS, AS washer d d 1 D D 1 B,2 WS, min. GS Thin universal washer Shaft washer Housing washer mm g , LS AS WS GS , LS AS WS GS LS AS WS GS LS AS WS GS LS AS WS GS LS AS WS GS , LS AS WS GS , LS AS WS GS , LS AS WS GS

67 12.2 Needle roller thrust bearings with a centring flange and appropriate washers d mm B 1 B D D 1 d E a E b Principal dimensions Basic load ratings Fatigue Speed ratings Mass Designation dynamic static load limit Reference Limiting speed d D D 1 B B 1 E a E b C C 0 P u speed mm kn kn r/min g , , ,3 AXW , , , ,1 AXW ,2 3, ,4 37,5 4, AXW ,2 3, ,5 4, AXW ,2 3, ,5 5, AXW , ,4 60 6, AXW , , AXW , ,6 83 9, AXW , , AXW , , AXW ,2 4, , AXW

68 B 1 B 45 r 2 D d D d d 1 d LS AS WS 811 Dimensions Masses Designations Washers Universal washer Thin universal LS, AS washer d d 1, D B,2 WS, min. GS Shaft washer mm g ,75 0,3 8 3 LS 1024 AS ,75 0,3 9 3 LS 1226 AS ,75 0,3 9 3 LS 1528 AS 1528 WS ,75 0,3 9 4 LS 1730 AS 1730 WS ,75 0, LS 2035 AS 2035 WS , LS 2542 AS 2542 WS , LS 3047 AS 3047 WS ,5 0, LS 3552 AS 3552 WS ,5 0, LS 4060 AS 4060 WS , LS 4565 AS 4565 WS , LS 5070 AS 5070 WS

69