BALL BEARINGS & STEEL SHAFTS

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1 BA BEARINGS & STEE SHAFTS

2 Every care has been taken to ensure the accuracy of the information containe in this catalogue, but no liability can be accepte for any errors or omissions. We reserve the right to make changes without prior notice. Any reprouction, even partial, is allowe only by written permission by Rollco. NORDIC ECOABE

3 INDEX Inex INEAR BA BEARINGS... 4 Self-aligning Close Type SBE... 4 Close Type ME... 5 Close Type Stainless MES... 6 Open Type ME...UUOP... 7 Compact Type KH... 8 INEAR BA BEARING UNITS... 9 Close Unit Type KBA...UU... 9 Open Unit Type KBA...UUOP Flange Unit Type MEK...UU Flange Unit ong Type MEK...UU PRECISION SHAFTS Harene Precision Shafts W Harene Precision Shafts WV, Chrome Plate Harene Precision Shafts WRB, Stainless Steel X Harene Precision Shafts WRA, Stainless Steel X PRECISION SHAFTS PREDRIED SHAFT BOCKS Shaft Block Type SK Shaft Block Type SHF SHAFT SUPPORTS Shaft Support FTSN Flange Type Shaft Support FTSU ow Type TECHNICA INFORMATION Contact factor (fc) oa factor (fw) Static safety factor Mounting tolerances Friction Operating temperature ifetime calculation

4 INEAR BA BEARINGS Self-aligning Close Type SBE 30' 30' D W B Number of ball rows Inscribe circle Outer ength Outer locking groove D B W oa capacity Dynamic C(N) Static Co(N) SBE16UU SBE20UU SBE25UU SBE30UU SBE40UU SBE50UU Dimensions in mm. Other types available on request. 4

5 INEAR BA BEARINGS Close Type ME W B W D D1 Number of ball rows Inscribe circle Outer ength Outer locking groove Outer locking groove oa capacity D B D1 W Dynamic C(N) Static Co(N) ME5UU ME8UU ME12UU ME16UU ME20UU ME25UU ME30UU ME40UU ME50UU ME60UU Dimensions in mm. Other types available on request. 5

6 INEAR BA BEARINGS Close Type Stainless MES W B W D D1 Number of ball rows Inscribe circle Outer ength Outer locking groove Outer locking groove oa capacity D B D1 W Dynamic C(N) Static Co(N) MES8UU ,5 15,2 1, MES12UU MES16UU MES20UU MES25UU MES30UU MES40UU Dimensions in mm. Other types available on request. 6

7 INEAR BA BEARINGS Open Type ME...UUOP W B W D D1 Number of ball rows Inscribe circle Outer ength Outer locking groove Outer locking groove oa capacity D B D1 W Dynamic C(N) Static Co(N) ME12UUOP ME16UUOP ME20UUOP ME25UUOP ME30UUOP ME40UUOP ME50UUOP Dimensions in mm. Other types available on request. 7

8 INEAR BA BEARINGS Compact Type KH D Inscribe circle Outer ength D oa capacity Dynamic C(N) Static Co(N) External seals KH0622PP KH0824PP KH1026PP KH1228PP G 12 x 19 x 3 KH1428PP G 14 x 21 x 3 KH1630PP G 16 x 24 x 3 KH2030PP G 20 x 28 x 4 KH2540PP G 25 x 35 x 4 KH3050PP G 30 x 40 x 4 KH4060PP G 40 x 52 x 5 KH5070PP Dimensions in mm. Other types available on request. 8

9 INEAR BA BEARING UNITS Close Unit Type KBA...UU W J±0.2 4-S1 C±0.2 F G T h±0.02 E± S2 NOTE: inear Units can also be supplie with self-aligning SBE-Bushing (KBE...UU) or stainless MES-Bushing (KBS..UU). Inscribe circle h E W F G T J C S1 S2 oa capacity Dynamic C(N) Static Co(N) KBA12UU M KBA16UU M KBA20UU M KBA25UU M KBA30UU M KBA40UU M KBA50UU M Dimensions in mm. Other types available on request. 9

10 INEAR BA BEARING UNITS Open Unit Type KBA...UUOP J±0.2 W E± S1 C±0.2 F T h±0.02 h1 Inscribe circle W F h E h1 J C S1 T oa capacity Dynamic C(N) Static Co(N) KBA16UUOP M KBA20UUOP M KBA25UUOP M KBA30UUOP M KBA40UUOP M Dimensions in mm. Other types available on request. 10

11 INEAR BA BEARING UNITS Flange Unit Type MEK...UU h P.C.D 2 1 D1 D H K No. of ball rows D D1 K H P.C.D 1 x 2 x h oa capacity Dynamic C(N) Static Co(N) MEK8UU ,5 x 6 x 3, MEK12UU ,5 x 7,5 x 4, MEK16UU ,5 x 7,5 x 4, MEK20UU ,5 x 9 x 5, MEK25UU ,5 x 9 x 5, MEK30UU ,6 x 11 x 6, MEK40UU x 14 x MEK50UU x 14 x 8, MEK60UU x 17,5 x 10, Dimensions in mm. Other types available on request. 11

12 INEAR BA BEARING UNITS Flange Unit ong Type MEK...UU h P.C.D D1 D 2 1 H K No. of ball rows D D1 K H P.C.D 1 x 2 x h oa capacity Dynamic C(N) Static Co(N) MEK12UU x 8 x MEK16UU x 8 x MEK20UU x 9.5 x MEK25UU x 9.5 x MEK30UU x 11 x MEK40UU x 14 x MEK50UU x 14 x 8, MEK60UU x 17 x Dimensions in mm. Other types available on request. 12

13 PRECISION SHAFTS Harene Precision Shafts W t 2 /1000 A 0,3 t 3 /1000 A t 1 Material: e. g. quenche an tempere steel Cf53 / Surface harness: 59 HRC min. Other types available on request. Weight (kg/m) Shaft (mm) Harening epth (mm) ISO Stanar tolerance ISO (μm) Rounness (circular) (μm) Parallelism (cylinric) (μm) Straightness (mm/m) h6 t1 t2 t3 W5 0,15 5 0,4 0/ ,2 W6 0,22 6 0,4 0/ ,2 W8 0,39 8 0,4 0/ ,2 W10 0, ,4 0/ ,1 W12 0, ,6 0/ ,1 W14 1, ,6 0/ ,1 W16 1, ,6 0/ ,1 W20 2, ,9 0/ ,1 W25 3, ,9 0/ ,1 W30 5, ,9 0/ ,1 W40 9, ,5 0/ ,1 W50 15, ,2 0/ ,1 W60 22, ,2 0/ ,1 W80 39, ,2 0/ ,1 13

14 PRECISION SHAFTS Harene Precision Shafts WV, Chrome Plate t 2 /1000 A 0,3 t 3 /1000 A t 1 Material: e. g. quenche an tempere steel Cf53 / Surface harness: 59 HRC min. Chrome layer thickness: ca. 10 μm ayer harness: 800 HV Other types available on request. Weight (kg/m) Shaft (mm) Harening epth (mm) ISO Stanar tolerance ISO (μm) Rounness (circular) (μm) Parallelism (cylinric) (μm) Straightness (mm/m) h7 t1 t2 t3 WV10 0, ,4 0/ ,1 WV12 0, ,6 0/ ,1 WV16 1, ,6 0/ ,1 WV20 2, ,9 0/ ,1 WV25 3, ,9 0/ ,1 WV30 5, ,9 0/ ,1 Wv40 9, ,5 0/ ,1 14

15 PRECISION SHAFTS Harene Precision Shafts WRB, Stainless Steel X46 t 2 /1000 A 0,3 t 3 /1000 A t 1 Material: X46Cr13 / Surface harness: 52 HRC min. Reuction of loa rating for linear ball bearing because of less harness. Other types available on request. Weight (kg/m) Shaft (mm) Harening epth (mm) ISO Stanar tolerance ISO (μm) Rounness (circular) (μm) Parallelism (cylinric) (μm) Straightness (mm/m) h6 t1 t2 t3 WRB5 0,15 5 0,4 0/ ,2 WRB6 0,22 6 0,4 0/ ,2 WRB8 0,40 8 0,4 0/ ,2 WRB10 0, ,4 0/ ,1 WRB12 0, ,6 0/ ,1 WRB14 1, ,6 0/ ,1 WRB16 1, ,6 0/ ,1 WRB20 2, ,9 0/ ,1 WRB25 3, ,9 0/ ,1 WRB30 5, ,9 0/ ,1 WRB40 9, ,5 0/ ,1 WRB50 15, ,2 0/ ,1 WRB60 22, ,2 0/ ,1 15

16 PRECISION SHAFTS Harene Precision Shafts WRA, Stainless Steel X90 t 2 /1000 A 0,3 t 3 /1000 A t 1 Material: X90CrMoV18 / Surface harness: 54 HRC min. Reuction of loa rating for linear ball bearing because of less harness. Other types available on request. Weight (kg/m) Shaft (mm) Harening epth (mm) ISO Stanar tolerance ISO (μm) Rounness (circular) (μm) Parallelism (cylinric) (μm) Straightness (mm/m) h6 t1 t2 t3 WRA8 0,39 8 0,4 0/ ,2 WRA10 0, ,4 0/ ,1 WRA12 0, ,6 0/ ,1 WRA14 1, ,6 0/ ,1 WRA16 1, ,6 0/ ,1 WRA20 2, ,9 0/ ,1 WRA25 3, ,9 0/ ,1 WRA30 5, ,9 0/ ,1 WRA40 9, ,5 0/ ,1 WRA50 15, ,2 0/ ,1 16

17 PRECISION SHAFTS PREDRIED Precision Shafts WB, Prerille N2 N3 G n x G w G2 S Shaft Pitch Threa Threa epth Threa imension G G2 N2 N3 S WB M WB M5 9 2,5 6 WB M WB M WB M ,5 11 WB M Other tolerances accoring to stanar shaft W. Other types available on request. 17

18 T SHAFT BOCKS Shaft Block Type SK E±0.05 P 2-S h±0.02 F G B W Circle h W E B P S G F Weight (g) SK12A SK16A SK20A SK25A SK30A SK40A SK50A Shaft Block Type SHF W B 2 S F G Circle W T F G B S Weight (g) SHF ,5 20 SHF SHF SHF SHF SHF

19 SHAFT SUPPORTS Shaft Support FTSN Flange Type A2 K 1 H H1 A3 G G A1 A Aluminium with mounting holes. Stanar section length = 3700 mm. Support rails can be supplie upon request, with or without mounting holes. engths other than stana (max = 3700 mm) are also available on request. Notes: No anoizing in holes. The shaft is not inclue, please orer separately. Dimensions Mounting imensions A H A2 A3 H1 A1 1 G K FTSN12G , ,5 75 M4x20 FTSN16G M5x20 FTSN20G M6x25 FTSN25G M8x30 FTSN30G M10x35 FTSN40G M10x40 Dimensions in mm. 19

20 SHAFT SUPPORTS Shaft Support FTSU ow Type A2 K H2 H H1 2 A1 A 25 G G Aluminium with mounting holes. Stanar section length = 4000 mm. Support rails can be supplie upon request, with or without mounting holes. engths other than stana (max = 4000 mm) are also available on request. Notes: No anoizing in holes. The shaft is not inclue, please orer separately. Dimensions Mounting imensions A H A1 A2 H1 K 2 H2 G FTSU16G M FTSU20G M FTSU25G M FTSU30G M FTSU40G M Dimensions in mm. 20

21 TECHNICA INFORMATION Technical Information Contact factor (fc) oa biasing, attribute to mounting errors an multiple bearing assemblies can be accounte for by using the coefficient in table. Number of bearings for shaft Contact factor ,81 3 0,72 4 0,66 5 0,61 oa factor (fw) The loas acting on the linear units inclue payloa, inertial effects uring acceleration an eceleration as well as moment loas. All of these factors are ifficult to assess an are further complicate by the potential presence of shocks an vibrations. A more practical solution involves the use of the coefficients in table. Operating conitions ow spee operations (< 15 m/min) without shockloas Meium spee operations (60 m/min) without shockloas High spee operations (> 60 m/min) without shockloas fw 1-1,5 1, ,5 Static safety factor For applications with a high requirement for accuracy an smooth running, the static safety factor fs shoul be higher than the values shown in table to prevent permanent eformation at the contact points. fs = Co Po fs = static safety factor Po = static equivalent loa (N) Co = static loa rating (N) Operating conitions fs Shafts subjecte to small eflections an low shocks 1 2 Elastic eflection can cross loa the units 2 4 System subjecte to shock & vibration

22 TECHNICA INFORMATION Mounting tolerances The table below shows the tolerances to be use for a proper bearing installation. They insure a precise an smooth motion. Recommene mounting tolerances for SBE-ME-MES-KH bushings Housing material Steel/cast iron Aluminium/alloy Housing tolerance H7 H7 Friction The magnitue of the friction force is affecte by several factors. The type of bearing, the operating conitions, the type an quantity of the lubricant, the presence or lack of seals all impact the overall frictional behaviour. Stanar seals can a between 2 an 5 N to the overall friction force. The magnitue of the coefficient of friction epens upon the operating conitions such as loa, moments an/or preloa. Table below shows the ynamic coefficient of friction for each type of bearing uner normal operating conition (P/C = 0.2) an proper assembly. Type of bearing Friction coefficient KH to ME/SBE to Operating temperature The operating temperature ranges of the various bearings are shown in table below. Shoul the operating temperature excee the limits shown in the table, please contact Rollco. Stainless steel units, without seals, can operate between -20/+120 C. Type of bearing Operating temperature KH -20 to C ME/MES/SBE -20 to C 22

23 TECHNICA INFORMATION ifetime calculation Dynamic loa rating C The ynamic loa rating C is a loa of constant magnitue uner which 90% of a statistically significant number of apparently ientical bearings woul reach a theoretical life of 50 km without the apparent appearance of metal fatigue. Static loa rating Co The static loa rating Co is efine as the loa that woul cause a permanent eformation equal to 1/ of the ball at the most stresse contact point. ife of a linear ball bearing Repeate stresses onto the contact surfaces coul lea to material fatigue, This will lea to the appearance of surface pitting. The life of the unit is efine as the uration before the appearance of pitting. Rate life () The rate life is the total travele istance which 90% of a statistically significant number of apparently ientical bearings woul reach uner the same operating conitions without the apparent appearance of metal fatigue. = (C/P)3 50 (1) = rate life (km) C = ynamic loa ratings (N) P = equivalent ynamic loa (N) When a system is subjecte to a loa equal to the ynamic loa rating C the resulting life equal the rate life (50 km). The theoretical life of a linear bearing is affecte by the loa an by the operating conitions (temperature, vibration, shock, loa istribution, etc.) In such cases the theoretical life is calculate with the help of equation 2. = (fc C / fw P)3 50 (2) = rate life (km) C = ynamic loa ratings (N) P = equivalent ynamic loa (N) fc = Contact coefficient fw = oa factor The following equation (3) allows the conversion of the rate life in hours. h = 103 / (2 s n1 60) (3) h = rate life (hours) s = stroke length (m) = rate life (km) n1 = operating frequency (stroke/min) 23

24 Rollco AB Box Ekvänan Helsingborg Sween Tel Rollco A/S Skomagervej 13 E 7100 Vejle Denmark Tel Rollco Oy Sarankulmankatu Tampere Finlan Tel Rollco Norge AS Inustrigata ierstraa Norway Tel Ball Bearings & Steel Shafts_English_ Art.no. P2250ENC Rollco Taiwan No. 28, ane 125, Da-an Roa Shulin District 238 New Taipei City, Taiwan Tel Fax

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