XUZHOU BEILAI ENGINEERING MACHINERY CO.) LTD. SLEWING BEARING

Transcription

1 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. SLEWING BERING

2 徐州市贝莱工程机械有限公司 XUZHOU BEILI ENGINEERING MCHINERY CO. LTD. XUZHOU BEILI ENGINEERING MCHINERY CO.,LTD established in 2. Whitch is a professional company to design and produce slewing bearings, slew drives and excavator undercarriage parts. BE currently holds ISO91-28 approval and has been certified since 2 BEILI ENGINEERING MCHINERY Because of our good quality and service, we have owned famous custumers such as XCMG,JCB,Snorkel,The Tanfield Group, PutMetster, LIEBHER and so on. We are sincerely promise to provide better products with higher quality, best price 徐州市贝莱工程机械有限公司 XUZHOU BEILI ENGINEERING MCHINERY CO. LTD. and service. We are willing to cooperate with friends all over the world to build a bright futhure toghter. Quality system We follow strictly with the ISO91 quality management system, and have rigorous control to manufacturing technology and production process so as to ensure the stability of high quality of our products. Production equipments Machining workshop, locksmith assembly workshop, Heat treatment workshop and after-production auxiliary workshop. Key products Slewing bearing, Slew drives, Undercarriage parts Concept for enterprise Creating win-win teams, to pursue win-win between the company and clients. The slewing bearings we produce: Name Single row four-point contact ball slewing bearing Double row ball slewing bearing Flang ring Characteristics Four-Point Contact Ball Wide range of diameters and various cross-sections High capacity potential than Internal, external, and non-gear versions Eight-Point Contact Ball Four-Point Contact Ball Two matched rows of four-point Flanged cross-section on balls Potentially 8% more capacity than four-point of a given diameter Internal, external, or non-gear internal geared rings Rectangular cross-section Products pplication Heavy Equipment New Energy Others Internal, external, and non-gear versions available from stock

3 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. 品 / 质 / 赢 / 得 / 信 / 赖 Slew bearing nomenclature diameter of rolling center () Q N 1 2 G Precision level Normal Precision diameter of rolling element() Gear module types Smaller module Bigger module Diameter of rolling element() fashion of gearing type of rollgang structure Diameter of rolling center () Mounting hole Type Teeth Type W: Outside Teeth N: Inside teeth B: Without teeth Types of products: Raceway structure type: -Ball type slewing bearing 1-Roller type slewing bearing 1-Single-row crossed roller type /singe row ball type 2-Double-row different ball type 3-three row roller type Teeth type: -without teeth 1-Outside the Involute Cylindrical Gear meshing of small module 2-Outside the Involute Cylindrical Gear meshing of lardge module 3-Inside the Involute Cylindrical Gear meshing of small module -Inside the Involute Cylindrical Gear meshing of lardge module Slewing bearing structure types Q:Single-row Type J: Crossed Roller Type S:Three-row Roller Type The single-row without teeth slewing bearing is conpacted with the outside teeth type's inner ring diameter and inside teeth type's outside ring which have the same raceway Its plugs and oil holes are quispaced on the outside ring Crossed roller slewing bearing raceway diameter serious is the same as the single row ball slewing bearing raceway diameter. But the rolling elements are different between the roller slewing bearing and ball slewing bearing which have the same raceway diameter Slewing Ring Construction and Configurations 1 Outer ring Inner ring Gear Seal Oil hole Rolling element Insulation block Filler plug Tapper pin Mounting holes Slewing bearing was compacted with Inner ring, outer ring with raceway,ext gear or Int gear. The seal can protect the up and down raceway,the lubrication was instert from the oil hole. In the slewing bearing, the rolling element endure the force between the inner ring and outer ring. The raceway system load force is determined by raceway design, hardening depth, rolling elements number and sie. The insulation blocks saperate the rolling elements to reduce the frictional force and damage. The rolling elements were insert from the hole of filler plug, then the hole was fixed with tapper pin. The mounting holes could be through holes or screwed holes.

4 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. 品 / 质 / 赢 / 得 / 信 / 赖 Slewing Bearing Heat Treatment Raceway Hardening Raceways in a single-row ball slewing ring Raceways in a singlerow roller slewing ring. Raceways of a nose ring in a three-row roller slewing ring Raceways of a nose ring in a double row ball slewing ring Raceways hardening depth DW < 3 > 3- > - > DS > 3. > 3. >. >. Raceway of a supporting ring in a double-row ball slewing ring. Note: DS is the surface depth that hardness exceed 8HRC, DW is the rolling element diameter. Tooth Hardening For gears subjected to high tooth flank stress, hardened gears have proven very satisfactory. Depending on pitch diameter and ring diameter, - the gear rings are subjected to spin hardening or individual tooth induction-hardening, with the latter predominantly in the form of tooth contour hardening. Both methods provide improved flank load carrying capacity. Flank hardening with hardness phase-out in the region of the root radii, leaving the root radius unhardened, will reduce the load capacity at the root. Hardened gears require an individual calculation. Pinion/gear alignment is more cirtical with surface hardened gearing. If misalignment or deflection is excessive, tooth breakage may occur prematurely, making it even more critical than tooth flank wear. Tooth flank hardening Tooth contour hardening Total Tooth hardening Tooth hardening depth m < > -12 > > 18-2 DS Tooth flank Tooth contour > 1.2 > 2.2 > 3.2 >. >. > 1. > 1.2 > 2. Note: DS is the surface depth that hardness exceed 8HRC, DW is the rolling element diameter. Backlash

5 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. 品 / 质 / 赢 / 得 / 信 / 赖 Slewing bearing pacakage, storage, transportation, installation and maintance 1. Installation (1) It is required to put the screw holes in the plane of frame installing fundamental basement uniform with the installation bolt holes of the Slewing Bearing. (2) It is required that the temper stripe of tooth ring (external marking with letter's' shall be placed in the non-loading area or non-always loading area. The blockage point between the internal and external ring shall be at 18 to each other. The raceway's temper stripe of crane or excavator should be placed in angle of 9 with working load (Max) direction. (3) Suspend and place down horiontally the Slewing Bearing on the plane of frame installing fundamental basement. Use the plug gauge to check their contact condition. Fill in partially with placer if there is clearance. () Before tightening bolts according to peak point (Green paint markers) of radial movement to adjust interstices of gears. fter tightening bolts, check side interstices of gears around the whole circumference to avoid unparallel contact and uneven force between big and small gears. ()Use high strength bolt when install Slewing Bearing. The strength class could be selected according to practical working condition and actual loads of the Slewing Bearing would be born. Bolts should be tightened horiontally and syetrically and finally check them once again. Make sure that all the bolts in the circle have the same Pre-force. The installing bolt spacer should be flat spacer. It should not be used of any spring washers. Tighten the bolt step by step according to the following chart. Sequence of bolts tightening Installation of bolt The specifications of bolts should meet the standards of GB/T782-2 and GB/T Their strength class should not less than the regulation specified by class 8.8 of GB/T The strength class could be selected according to practical working condition and actual loads of the Slewing Bearing would be born. The specifications of screw nut should meet the need of GB/T17-2 and GB/T17-2. Their mechanical properties must meet the need of GB The spacer must meet the need of GB/T and GB/T They are all heat treated for temper hardening. It should not be used of any spring washers. Make sure to have enough pre-tighten force during installation. Generally, the pre-tighten force would be.7 times of the yield limit of bolt. It might be smeared a lot of soft oil on the thread location. Pre-Tightening Torque or Forces of Bolts see table. The fixture length of the bolt LK=d (where: d is the diameter of the bolt. Pre-Tightening Torque or Forces of Bolts Note: Note: (1)If the sie of the bolt can not fit GB/T782- or GB/T783-, the value of the table should be calculated anew. (2)The total friction coefficient between the bolt head and tightening face?.1, it might be smeared a lot of soft oils on the thread location. ()fter installing the Slewing Bearing, remove the dirt and dust on the Slewing Bearing, paint the part exposed in the air, and cover the races and gears with lubricating grease to prevent rusting. 2.Maintenance and Lubrication of the Slewing Bearing (1) The Slewing Bearing had been filled with No.2 lithium based grease (GB ) in its raceway before delivery. When start to use it, user should cover it with lubricating grease again according to different working conditions. (2)The Slewing Bearing should regularly be filled with lubricating grease in its raceway. Generally, it is necessary to relubricate raceway every 1 hours for ball type bearing, s, and every hours for roller type support. The filling period should be shortened if there is the special working condition such as at the Torrid Zone, high humidity, severe dust, large temperature variation and long continuing working time. Before and after the running of the Slewing Bearing, it should be filled with enough new lubricating grease. Each time the race should be filled with lubricating grease fully until the grease ooe forth. When lubricating the Slewing Bearing, turn it slowly to let the grease distribute evenly. (3)The gear faces exposed in air should periodically cleaned and spread with appropriate oil on it. Bolt's Strength Class Bolt Thread Sie Bore Diameter Tightening torgue Pre-tightening Force () Please check the pre-tighten force of the bolts after first 1 working hours of the Slewing Bearing. nd after then check it once every hours running. It must be always kept enough pre-tighten force. ()Stop and check the machine during operation if there is abnormal noise, vibration occurred or suddenly power rose. Remove the trouble or dismantle it for reqairing if necessary. ()It's best to take protective measures. void the ill effects of wind, dust, rain, floods, and high temperature during operation. Shouldn let the hard materials access or enter in the engaging area of the gear. (7)Regularly check the seal ring is that ok or not. Replace it if it is damaged and reset it when it is fallen. Pre-Tightening Torque 3.Loading, Unloading, Storage and Transportation: (1) Slewing Bearing has been sealed up before it leaves the factory. The packed Slewing Bearing can be stored for six months under suitable conditions. The grease should be changed every 1 month. fter every month it needs preservative packing again. (2)The Slewing Bearing should be parallel placed, tightened rigidly and should not be touched or when it's transporting. (3) Suspend and move horiontally the Slewing Bearing. Be careful not to collide it with other things, especially in the radial direction. () When stack the Slewing Bearings, at least 3 wooden blocks of the same height should be evenly placed along the circle. nd the blocks between the Slewing Bearings should be stacked one on top of the other. Type Selection Calculation Slewing ring safety factor fs Calculation for single-row ball slewing ring 1 Capacity of slewing ring C = f D d In Equality Co Capacity of bearing kn f Capacity factor.18 kn / 2 D Diameter of track center d Diameter of ball 2 Loading calculation In Equality Cp Loading caculation kn M Toppling movement kn m Fa xial force kn Fr Radial force kn 3 Safety factor calculation fs = Co / Cp fs see the right table

6 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. Single-row four point contact ball slewing bearing (1 series) JB/T 基本型号外型尺寸安装孔尺寸结构尺寸齿轮参数外齿参数内齿参数 序 d n1 d m1 号无齿式外齿式内齿式 D d H D 1 D 2 d n2 d m2 L n 1 D 3 d 1 H 1 h b m d a d a n M M M M M

7 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. Single-row four point contact ball slewing bearing (HS series) JB/23-78 CHRCTERISTIC OF STRUCTURE PERFORMNCE ND PPLICTION Notes The single-row four point contact ball slewing ring is composed of 2 seatrings. It features compact in design) ling in weight) the balls contact with the circular raceway at four points) via which the axial force) radial force and resultant moment may be born simultaneously. It may be used for slewing conveyers) welding operating consoles) light) medium duty cranes) excavators and other engineering machines. N1-nurnber of lubricating hotes) evenly distributed lubricating nipple M1 1GB Mounting hole n-φ,may be replaced with screw hole) tooth width may be taken an H-h. Gear force of periphery given in the table is its maximum value) nominal force of periphery is taken 1/2 of given value. The spaceshift coefficient given in the tolde is the date of outer tooth ) while that of inner tooth is+.3 Basic Type Configuration Sie Mounting Sie Structural Sie Gear Data Ext Gear Int Gear Tangential Tooth Load Load Diagram Number Toothless D L Ext Toothing D L Int Toothing D L D d H D 1 D 2 n Ø n 1 D 3 d 1 H 1 h b x m D e D e Normaliing Z 1 N Tempering 1 N w 1 HSB.2.2 HSW HSB.2.72 HSW HSB.3.82 HSW.2.2 HSN.2.2 HSN.2.2 HSW.2.72 HSN.2.72 HSN.2.72 HSW.3.82 HSN.3.82 HSW.3.82 HSN.3.82 HSW.3.88 HSN.3.88 HSB.3.88 HSW.3.88 HSW.3.12 HSB.3.12 HSW.3.12 HSW HSB HSW HSW HSB.3.12 HSW HSW HSB.3.13 HSW.3.13 HSW HSB.3.1 HSW.3.1 HSW HSB.3.17 HSW.3.1 HSW HSB..188 HSW..188 HSW HSB..211 HSW..211 HSW..237 HSB HSW..237 HSW..2 1 HSB..2 HSW..2 HSW HSB..282 HSW..282 HSW..312 HSB HSW..312 HSW..38 HSB HSW..38 HSW HSB..3 HSW..3 HSW.. 19 HSB.. HSW.. HSN.3.88 HSN.3.12 HSN.3.12 HSN HSN HSN.3.12 HSN.3.12 HSN.3.13 HSN.3.13 HSN.3.1 HSN.3.1 HSN.3.1 HSN.3.1 HSN..188 HSN..188 HSN..211 HSN..211 HSN..237 HSN..237 HSN..2 HSN..2 HSN..282 HSN..282 HSN..312 HSN..312 HSN..38 HSN..38 HSN..3 HSN..3 HSN.. HSN

8 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. Single-row ball slewing bearing(q serious) Single-row slewing ring) featured in auadruple-loading-points) and advanced structure in the world) is suitable to be assemblied to the mechanical part of variovs cranes) excavators) piledrivers) scalling-ladder of fire trucks and under-ground engines) etc) Whatever these turnable parts require a strong stand to aial radial load and tilting moment) this rotary kind of slewing ring will be you best choice. Note: Cross roller slewing rings) except type and diameter of their rolling object) are in accord with single-row slewing rings in their basic basic datas for same diameter of rolling center. ON Cross-section with internal gear OW Cross-section with external gear NO. Basic Type Configuration Mouning Sie Styuctural Sie Gear Data Weight(kg) Int Ext Toothing Int Toothing φ M No QU.QW.QN H D. 1 D 2 n n 1 D3 d1 H 1 h b m X=-. X=+. Ext Int B.C.D D d D d D e Z D e Z φ φ T M M M M M M Ext The load graphs please refer to the 1 series.specially ones please contact with us.

9 XUZHOU BEILI ENGINEERING MCHINERY CO.) LTD. 品 / 质 / 赢 / 得 / 信 / 赖 Double-row Different Ball Slewing Bearing (2 serious) CHRCTERISTIC OF STRUCTURE PERFORMNCE ND PPLICTION The double row ball slewing bearing has three seat rings.the steel ball and the spacers can be directly arranged into the upper and lower races. Two rows of steel balls with different diameters are fitted according to the force boom. Open mode fitting is extraordinary convenient.the load angles of both upper and lower races are 9,which enable to bear large axial and the tilting moment. When the radial force is larger than 1/1 of the axial force, the races sould be specially designed. s the axial and radial dimension of the double row ball slewing bearing are rather larger, construction is sturdy, hence it is wspecially suitable for tower cranes and truck cranes which require working radius over midium range. Notes N1-nurnber of lubricating hotes) evenly distributed lubricating nipple M1 1GB Mounting hole n-φ,may be replaced with screw hole) tooth width may be taken an H-h. Gear force of periphery given in the table is its maximum value) nominal force of periphery is taken 1/2 of given value. The spaceshift coefficient given in the tolde is the date of outer tooth is.1, while that of inner tooth is+.2 基本型号 Basic Type Configuration Mounting hole Sie Structural Sie Gear Data Ext Gear Data Int Gear Data 序 d n1 d m1 号无齿式外齿式内齿式 No Gear Ext Gear Inner Gear D d H D 1 D 2 d n2 d m2 L n 1 H 1 h b m d a n d a M M M M M M

10 始终如一真诚 远 徐州市贝莱工程机械有限公司 DD :No.1 Xinda road)the third Industrial park,tongshan Economic Development one,xuhou, Jiangsu, China TEL : FX : Website: