Three-Row Roller Slewing Ring Bearings, also called three-row cylindrical roller combination slewing ring bearings, is a kind of bearing with high load carrying capacity, which is mainly used in occasions with large loads. This slewing bearing has three seating rings, the upper, lower and radial raceways are separated, so that each row of rollers can bear axial and radial loads respectively, and it is one of the four products with higher load carrying capacity. In this kind of turntable bearing, the axial force and tilting torque are borne by the upper and lower rows of horizontal rollers; the radial force is borne by the third row of rollers arranged vertically. It is widely used in medium and large cranes and excavators and other construction machinery, construction machinery, metallurgy, port lifting equipment, ship cranes and other equipment with large loads are also widely used three rows of cylindrical roller combination slewing ring bearings.

 

Three-row roller

Three rows of cylindrical roller combination slewing ring bearings simultaneously bear axial load, tilting moment and radial load. Compared with crossed cylindrical roller slewing disc bearings, the load per roller is reduced, and compared with double-row radial ball slewing disc bearings, the contact stresses are reduced by moving from point contact to line contact. As a result, the load carrying capacity is greater, under the same shape and size conditions. The axial and radial loads of this structure are carried by different rollers, where the axial load and tilting moment are carried by two sets of rollers placed horizontally by the shaft, and the radial load is carried by one set of rollers placed vertically by the shaft.

External Tooth Type Three-Row Roller Slewing Ring Bearings Product Parameters

Three-Row Roller Slewing Ring Bearings
LKPB Model Overall dimensions Mounting Dimensions Tooth parameter Payloads Weights
De de di Di He Hi Ht Fe Ne V Fi Ni V m z Dp x·m
[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [-] [mm] [-] [mm] [-] [mm] [mm] [kN] [kg]
E-0500 665 526 537 366 116 138 148 598 24 18 402 24 18 5 130 650 5 2750 224
E-0560 725 586 597 426 116 138 148 658 24 18 462 24 18 5 142 710 5 3080 240
E-0630 808 593 604 496 116 138 148 728 28 18 532 28 18 8 98 784 8 3450 270
E-0710 888 673 684 576 116 138 148 808 28 18 612 28 18 8 108 864 8 3880 300
E-0800 1008 830 841 636 142 172 182 920 36 22 680 36 22 8 123 984 8 5490 500
E-0900 1104 930 941 736 142 172 182 1020 36 22 780 36 22 8 135 1080 8 6190 600
E-1000 1220 1030 1041 836 142 172 182 1120 40 22 880 40 22 10 119 1190 10 6890 680
E-1120 1340 1150 1161 956 142 172 182 1240 40 22 1000 40 22 10 131 1310 10 7680 820
E-1250 1512 1200 1210 1055 170 210 220 1393 45 26 1107 45 26 14 105 1470 14 11100 1200
E-1400 1666 1350 1360 1205 170 210 220 1543 45 26 1257 45 26 14 116 1624 14 12400 1300
E-1600 1872 1550 1560 1405 170 210 220 1743 48 26 1457 48 26 16 114 1824 16 14200 1520
E-1800 2072 1840 1850 1605 170 210 220 1943 48 26 1657 48 26 14 145 2030 14 15900 1750
E-2000 2304 1945 1967 1779 177 219 231 2155 60 33 1845 60 33 18 125 2250 18 20500 2400
E-2240 2556 2185 2207 2019 177 219 231 2395 60 33 2085 60 33 18 139 2502 18 23100 2700
E-2500 2820 2445 2467 2279 177 219 231 2655 72 33 2345 72 33 20 138 2760 20 25800 3000

Internal Tooth Type Three-Row Roller Slewing Ring Bearings Product Parameters

Three-Row Roller Slewing Ring Bearings
LKPB Model Overall dimensions Mounting Dimensions Payloads Weights
De de di Di He Hi Ht Fe Ne V Fi Ni V
[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [-] [mm] [-] [kN] [kg]
U-0500 634 526 537 366 138 116 148 598 24 18 402 24 18 2750 224
U-0560 694 586 597 426 138 116 148 658 24 18 462 24 18 3080 240
U-0630 764 656 667 496 138 116 148 728 28 18 532 28 18 3450 270
U-0710 844 736 747 576 138 116 148 808 28 18 612 28 18 3880 300
U-0800 964 830 841 636 172 142 182 920 36 22 680 36 22 5490 500
U-0900 1064 930 941 736 172 142 182 1020 36 22 780 36 22 6190 600
U-1000 1164 1030 1041 836 172 142 182 1120 40 22 880 40 22 6890 680
U-1120 1284 1150 1161 956 172 142 182 1240 40 22 1000 40 22 7680 820
U-1250 1445 1290 1300 1055 210 170 220 1393 45 26 1107 45 26 11100 1200
U-1400 1595 1440 1450 1205 210 170 220 1543 45 26 1257 45 26 12400 1300
U-1600 1795 1640 1650 1405 210 170 220 1743 48 26 1457 48 26 14200 1520
U-1800 1995 1840 1850 1605 210 170 220 1943 48 26 1657 48 26 15900 1750
U-2000 2195 2041 2055 1816 137 117 150 2127 60 33 1885 60 33 16900 1120
U-2240 2461 2273 2295 2019 219 177 231 2395 60 33 2085 60 33 23100 2700
U-2500 2721 2533 2555 2279 219 177 231 2655 72 33 2345 72 33 25800 3000

LKPB Three-Row Roller Slewing Ring Bearings Product Features

  • Material: 42CrMo, 50Mn
  • Seal type: Nitrile rubber
  • Characteristics: four-point
  • contact inner teeth / outer teeth / no teeth
  • Inner diameter size: 100-8000mm
  • Outside diameter: 200-10000mm
  • Warranty: 12 months
  • Rolling body: steel ball
  • Normalized hardness: 187HB-241HB
  • Tempering hardness: 229HB-269HB
  • Raceway quenching hardness: HRC 55-62
  • Non-standard models can be designed and manufactured according to customer requirements.
  • Optimization of the sealing structure or redesign of the internal retainer according to customer requirements.
  • Packing: metal stand or export standard non-fumigation wooden case.

About LKPB Bearing Company

China Precision Crossed Roller Bearings Manufacturer - LKPB

Luoyang LIKE Precision Machinery Co., Ltd – LKPB®, Located in Luoyang, China, Established in 2013 with a registered capital of 5 million, We are a professional bearing manufacturer.

LKPB strictly follows the ISO9001 quality system requirements for product quality control, we have a strong technical team to accept processing of non-standard precision bearings of P5, P4, P2 and VSP level of accuracy. The products inner diameter size range is φ20mm-φ2000mm.

We have established long term co-operation with a number of the world’s leading machine tool and robotics companies, the products can completely replace of INA/IKO/THK/FAG/SKF/KAYDON and other brands. We believe that cooperating with us will exceed your expectations.

  1. Rotary Table Bearings ( YRT, YRTC, YRTS, YRTM, ZKLDF Series) ;
  1. Cross Roller Bearings ( RA/RA-C, RAU, RB, RU, RW, RE, SX, XU, XV, XSU, XR/JXR, CRB/CRBC, CRBF/CRBFV, CRBH/CRBHV, CRBS/CRBSV, CRBT/CRBTF Series);
  1. Thin Section Bearings ( KAA, KA, KB, KC, KD, KF, KG, JHA, JA, JB, JG, JU Series);  
  1. Robot Reducer Bearings (CSF/CSG, SHF/SHG, CSD Series, RV Reducer Bearings and Flexible Bearings F, 3E Series);
  1. Angular Contact Ball Bearings ( 718, 719, 70, 72, 2344/2347 Series);  
  1. Ball Screw Support Bearings ( ZKLF/ZKLN, ZARF/ZARN Series);
  1. Slewing Ring ( Cross Roller, Four-Point Contact, Eight-Point Contact Same Path, Eight-Point Contact Different Path, Three-row roller and Flanged Series);
  1. Hollow Rotary Platform Bearings ( ZK Series).
 

For expert guidance in meeting your specific requirements, reach out to our knowledgeable team. Experience firsthand how our precision solutions can elevate your machinery’s efficiency and durability. Contact us today!

LKPB With more than 10 years of production experience

Supporting OEM service; 50 days return service; 7*24 hours technical support; Accept non-standard customization; Maximum 24 months product warranty

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