Types of bearing

Slewing Bearings

Thursday, October 22nd, 2015

Slewing Bearings

The use of the slewing bearing is widespread. The main structure include triple-row cylindrical roller slewing bearing,

double-row ball slewing bearing, cross cylindrical roller slewing bearing, four-point contact ball bearing, etc. As the

equipment manufacturing industry develops, more and more enterprises are using non-standard-structure slewing

bearings in special application. 80% of our slewing bearings are based on non-standard design.



Crossed cylindrical
roller slewing bearings

Features:Main structural characteristics: 1:1 cross arrangement of cylindrical rollers.The bearing with this

structure features high stability, high precision, and high impact resistance. For example, the cannon’s ro-

tary base uses this kind of bearing.



Four-point contact
ball slewing bearings

Features:The four-point contact ball bearing is separable bearing, typically available in two structures as

follows: QJ 0000 – two half inner rings and one complete outer ring; QJF 0000 – two half outer rings and

one complete inner ring.



Double row angular
contact ball slewing bearings

Features:Main structural characteristics: two rows of steel balls of different diameters areplaced to bear

the axial force and upsetting moment. The most prominent feature is flexible rotation, but its bearing

capacity is lower than that of the triple-row cylindrical roller



Three row cylindrical
roller slewing bearing

Features:Main structure characteristics: two rows of cylindrical rollers are laid horizontally around the

circumference mainly to bear high axial load and upsetting moment; and one row of cylindrical rollers

are laid vertically mainly for the upsetting moment-induced radial


four-point contact ball slewing bearings without a gear 411 to 1091mm

Thursday, February 28th, 2013

1.four-point contact ball slewing bearings without a gear 411 to 1091mm
Dimensions                                 Attachment bolt holes              Mass       Designation      Basic load ratings   Static limiting load dlagram

                                         Outer ring           Inner ring                                  axial dynamic  static   Raceway        Bolt
C C0 curves curves
dm     D    D1    D2   d    d1    d2     Je      Ke     Ne   Ji    Ki    N                                  C              C0      curves         curves
mm                                      mm               _   MM          _     KG                           KN                       _
411   518  454  412,5  304  368  409,5  490     18       8   332   18   12     23,5      RKS.23 0411        169           284       r1              b1
541   648  584  542,5  434  498  539,5  620     18      10   462   18   14     31,0      RKS.23 0541        188           380       r2              b2
641   748  684  642,5  534  598  639,5  720     18       12  562    18  16     36,5      RKS.23 0641        200           440       r3              b3
741   848  784  742,5  634  698  739,5  820     18       12  662    18  16     43,0      RKS.23 0741        211           524       r4              b4
841   948  884  842,5  734  798  839,5  920     18       14  762    18  18     48,0      RKS.23 0841        222           580       r5              b5
941   1048 984  942,5  834  898  939,5  1020    18       16  862    18  20     54,0      RKS.23 0941        231           664       r6              b6
1091  1198 1134 1092,5 984  1048 1089,5 1170    18       16  1012   18  20     62,0      RKS.23 1091        244           766       r7              b7

Cross Roller Slewing Rings Bearings-Turntable bearings E797/600G2

Wednesday, June 6th, 2012

Cross Roller Slewing Rings Bearings-Turntable bearings E797/600G2
CHG manufactures single row crossed cylindrical roller slewing bearings in a variety of executions and sizes to meet the needs of particular applications.
The customized SKF single row crossed cylindrical roller slewing bearings listed in the product tables include bearings
with a mean raceway diameter ranging from 310 to 4272 mm and are available with any of the following gear configurations or options:
• with an external gear (a)
• with an internal gear (b)
• without a gear (c)
• with (c) or without centring recesses
Cross Roller Slewing Rings Bearings-Turntable bearings E797/600G2
boundary dimensions:
d:600mm
D:9000mm
H:125mm
mount demensions:
D1:848mm
D2:690mm
n1:30
n2:29
structure demensions:
D3:750mm
d1:754mm
H1:105mm
h:15mm
designations:E797/600G2
basic load ratings:Coa:2800KN
mass:246KG

four-point contact ball slewing bearings RKS.22 0941

Tuesday, May 29th, 2012

 four-point contact ball slewing bearings RKS.22 0941
dm:941mm
D:1048mm
D1:984mm
D2:942.5mm
d:840mm
d2:939.5mm
attachment bolt holes outer ring:
Je:1020mm
Ke:18
Ne:16
attachment bolt holes inner ring:
ji:905mm
Ki:M12
Ni:22
Mass:71.0kg

internal gear four-point contact ball slewing bearings RKS.22 0841

Tuesday, May 29th, 2012

internal gear four-point contact ball slewing bearings RKS.22 0841
dm:841mm
D:948mm
D1:884mm
D2:842.5mm
d:736mm
d2:839.5mm
attachment bolt holes outer ring:
Je:920mm
Ke:18
Ne:14
attachment bolt holes inner ring:
ji:805mm
Ki:M12
Ni:20
Mass:63.0kg

large-size four-point contact ball slewing bearings RKS.22 0741

Tuesday, May 29th, 2012

large-size  four-point contact ball slewing bearings RKS.22 0741
dm:741mm
D:848mm
D1:784mm
D2:742.5mm
d:649mm
d2:739.5mm
attachment bolt holes outer ring:
Je:820mm
Ke:18
Ne:12
attachment bolt holes inner ring:
ji:705mm
Ki:M12
Ni:20
Mass:55.0kg

four-point contact ball slewing bearings RKS.22 0641

Monday, May 28th, 2012

four-point contact ball slewing bearings RKS.22 0641
dm:641mm
D:748mm
D1:684mm
D2:642.5mm
d:546mm
d2:639.5mm
attachment bolt holes outer ring:
Je:720mm
Ke:18
Ne:12
attachment bolt holes inner ring:
ji:605mm
Ki:M12
Ni:18
Mass:48.0kg

internal gear four-point contact ball slewing bearings RKS.22 0541

Monday, May 28th, 2012

internal gear four-point contact ball slewing bearings RKS.22 0541
dm:541mm
D:648mm
D1:584mm
D2:542.5mm
d:445mm
d2:539.5mm
attachment bolt holes outer ring:
Je:620mm
Ke:18
Ne:10
attachment bolt holes inner ring:
ji:505mm
Ki:M12
Ni:16
Mass:41.0kg

large-size four-point contact ball slewing bearings RKS.22 0411

Monday, May 28th, 2012

large-size four-point contact ball slewing bearings RKS.22 0411
dm:411mm
D:518mm
D1:454mm
D2:412.5mm
d:325mm
d2:409.5mm
attachment bolt holes outer ring:
Je:490mm
Ke:18
Ne:8
attachment bolt holes inner ring:
ji:375mm
Ki:M12
Ni:12
Mass:31.0kg

RKS.22 0411 four-point contact ball slewing ring bearings internal gear

Thursday, May 17th, 2012

RKS.22 0411 four-point contact ball slewing ring bearings internal gear
dm:541mm
D:648mm
D2:542.5mm
d:445mm
attachment bolt holes outer ring:
Je:620mm
Ke:18
Ne:10
attachment bolt holes inner ring:
ji:505mm
Ki:M12mm
Ni:16
Mass:41.0kg

four-point contact ball slewing ring bearings

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