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Maintenance of excavator slewing bearing and swing circle
22

Jun, 2021

Maintenance of excavator slewing bearing and swing circle

Excavator slewing bearing also names turntable bearing,slewing circle,turntable circle,swing bearing,swing circle,slewing ring.

The swing bearing is an indispensable transmission device in the slewing system of an excavator. Users who have used the slewing ring should know that a certain amount of wear and loss will occur after the support is used for a period of time. The main reason for the wear of the slewing ring of the excavator is :

1. When purchasing a slewing bearing, the model is matched incorrectly. When the tooling is connected, the speed will not match, and the excessive load will cause the inner and outer teeth to wear;

2. The swing circle is designed for the tooling model and the selection of materials. If the selection is improper, it will cause the slewing ring to wear faster.

The following editor will introduce you to the maintenance and maintenance methods of the slewing ring

1. Regularly check the pre-tightening force of the slewing ring bolts. The slewing ring is used for 100 hours to 500 hours, which is a working cycle. After the equipment is stopped, the bolt pre-tightening torque should be checked one by one. After a period of running-in period, every 1000 hours is a working cycle, stop the machine to check the bolt pre-tightening force.

2. When the slewing ring is used, attention should be paid to the changes in operating noise. If there is noise in operation, it must be disassembled immediately to eliminate the fault;

3. When pre-tightening the nut, evenly spread the lubricating oil between the bolt and the nut, and use the matching wrench to tighten it clockwise several times.

4. When storing slewing bearings, they should be hoisted and stacked horizontally. Do not lift vertically to prevent deformation of the rolling ring;

5. The bolts and nuts used in the slewing ring should be selected according to the bearing curve of the slewing ring bolts. When installing, the double nuts are tightened to prevent loosening.

6. There are 4 oil cups distributed on the inner and outer ring gears of the slewing ring, and grease is added to the raceway from the oil cup. Under the guidance of Fenghe intelligent technicians, the slewing ring has a cycle every 50 hours. Each time you add grease, you must add enough grease until the grease leaks out of the seal.


Our slewing swing bearing for excavator model list

Fit for Brand Excavator and bulldozer Model List
KOMATS U PC20 PC30 PC35 PC40 PC45
PC60-1-3-5-6-7 PC75 PC100-3-5 PC120-3-5 PC150
PC200-1-3-5-6-7-8 PC220-1-3-5-6 PC240 PC300-1-3-5-6-7 PC350
PC400-3-5-6 PC450 PC650 PC750 PC800
CATERPILLA R E55/E55B E70/E70B E110/E110B E120/E120B E180
E215 E225DLC E235 E240 E300B
E307 E306 E305 E311/E312 E320/E200B
E322 E324 E325 E330 E339
E345 E349 E450
HITACH I EX30 EX40 EX55 EX60-1-2-3-5 EX70
EX100-1-3 EX120-1-3-5 EX150 EX200-1-2-3-5-8 EX220
EX230 EX270 EX300-1-2-3-5-6 EX400-1-2-3-5 EX600
UH043 UH052 UH053 UH07 UH081
UH082 UH083 ZAXIS 60 ZAXIS 200-3-6 ZAXIS 240
ZAXIS 270 ZAXIS 330 ZAXIS 360 ZAXIS 450 ZAXIS 870
ZAXIS 110 ZAXIS 120
BULLDOZER D20 D3 D30 D31 D3L
D3C D37 D3D D4C D40
D4D D4H D41 D45 D50/D5/D5B
D53/D57/D58 D60/D65 D6D/D6 D6C D6H
D65=D85ESS-2 D75 D7G/D7R/D7H/D7 D80/D85 D85A-12
D8K D8N/R/L/T D9N D85EX-15 D150
D155 D275 D355
KATO HD80 HD140 HD250 HD400(HD450) HD550
HD700(HD770) HD820(HD850) HD880 HD900 HD1023
HD1220 HD1250 HD1430 HD2053
SUMITOM O SH60 SH70 SH100 SH120 SH200
SH210 SH220 SH280 SH300 SH320
SH350 SH360 SH400 SH450 SH460
LS2800FJ S340 S430
KOBELC O SK60 SK70 SK75 SK07-N2 SK07/2/7
SK100 SK120-3-5-6 SK125 SK160 SK200-1-3-5-6-8
SK210 SK220-3-6 SK230 SK250 SK260
SK300-3-6 SK320 SK330 SK400 SK480
DAEWOO DH55 DH60 DH80 DH130 DH150
DH200 DH220 DH215 DH220 DH258
DH280 DH300 DH360 DH370-9 DH400
DH420 DH500 UH07 K907C
HYUNDA I R60 R80 R130-5-7 R150 R200
R200-5 R210 R210-7 R215-7 R220-5
R225-7 R260-5 R265 R290 R300-5
R305 R320 R385 R420 R450-3-5
VOLV O EC55B EC140B EC210 EC240 EC290B
EC290B PRIME EC360 EC460 EC700
KUBOTA KX35 KX50 KX85 KX135 KX155
KX161
DOOSAN DX60 DX200 DX300 DX340
LIEBHERR R914 R916 R926 R934 R944
R954 R964 R974
YUCHAI YC35 YC60 YC85 YC135
CASE CX55 CX75 CX135 CX240 CX360
YM55 YM75 CX310
TAKEUCHI TB150 TB175
LIUGONG LG150 LG200 LG220 LG925 LG936
SAN Y SY65 SY90 SY130 SY215 SY335
SY365 SY6385
XG60 XG80 XG120 XG200 XG330
XG370
SE210LC SE280LC
Mitsubish i MS110/MS120 MS180 MS230 MS280


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