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excavator swing bearing
excavator swing bearing
excavator swing bearing
NATIONAL are committed to providing our customers with reliable and durable products that meet their needs and exceed their expectations. Our team of skilled engineers and technicians work tirelessly to design, develop, and produce top-quality components that are essential for the performance and efficiency of modern excavators.

Installation dimensions of excavator swing bearings

The excavator swing bearing is composed of two seat rings, with a compact structure and light weight. The steel ball contacts the arc raceway at four points, and can withstand axial force, radial force, and overturning torque simultaneously. It is a rotary conveyor and a welding operator
Note:
1. N1 is the number of lubricating oil holes, evenly distributed: oil cup M10 × 1 JB/T7940.1-JB/T7940.2
2. Installation hole n- Φ Can be changed to screw holes; The tooth width b can be changed to H-h.
3. The circumferential force of excavator swing bearing in the table is the maximum circumferential force, and the rated circumferential force is taken as 1/2 of it.
excavator swing bearing

Installation dimensions of excavator swing bearings

Serial numbermodel installation hole sizestructure
Size
Gear Parameters
Internal toothedHDuDnnhrough-holeAscrew holeB/C/Dn1oil cup
Quantity
hBmnternal tooth type x=+0.5
denumber of teeth zweight
Ddφd1T
  mm mmmmmm kg
1QN.315.20408224603702601017M16242104032077034
QN.315.20A42005135
2QN.355.20448264604103001017M16242104032468439
QN.355.20A42406140
3QN.400.20493310604553451217M16242104042887344
QN.400.20A52805746
4QN.450.20543360605053951217M16242104043368550
QN.450.20A53306752
5QN.500.20593410605554451417M16242104053857855
QN.500.20A63786457
6QN.560.20656468706185021417M163021050444011176
QN.560.20A54358877
7QN.630.20726538706885721617M163021050451212984
QN.630.20A550510286
8QN.710.20806618707686521817M163021050558511897
QN.710.20A65829897
9QN.800.20896708708587422017M1630210506672113110
QN.800.20A866484111
10QN.800.25908694788647361822M2036210586654110142
QN.800.25A864882142
11QN.900.251008794789648362022M203621058874494163
QN.900.25A1074075162
12QN.1000.2511088947810649362422M2036210588848107178
QN.1000.25A1084085179
13QN.1000.3211248809010749262424M2240210708832105230
QN.1000.32A1083084227
14QN.1120.321244100090119410462824M2240410701094095263
QN.1120.32A1293679262
15QN.1250.321374113090132411763224M224041070101070108294
QN.1250.32A12106890290
16QN.1400.321524128090147413263624M224041070121212102333
QN.1400.32A14120487336
17QN.1250.4013941110102133611643226M244541280101050106388
QN.1250.40A12104488388
18QN.1400.4015441260102148613143626M244541280121188100444
QN.1400.40A14119086434
19QN.1600.4017441460102168615144026M244541280121392117509
QN.1600.40A141386100511
20QN.1800.4019441660102188617144426M244541280141582114576
QN.1800.40A16156899591
21QN.1600.5017661438124170414964030M2750412100121368115714
QN.1600.50A14135898723
22QN.1800.5019661638124190416964430M2750412100141568113794
QN.1800.50A16155298818
23QN.2000.5021661842124210418964830M2750612100161760111891
QN.2000.50A18174698913
24QN.2240.5024062078124234421365430M27506121001619841251044
QN.2240.50A1819801111041
25QN.2500.5026662342124260423966030M27506121001822501261132
QN.2500.50A2022401131148
26QN.2500.6026962308150262623746033M30566141221822141241621
QN.2500.60A2022001111654
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