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The excavator rotary gearbox usually adopts a planetary gear transmission structure. It consists of a sun gear, planet gears, and a ring gear inside. During operation, the hydraulic motor outputs power to drive the sun gear to rotate. Driven by the sun gear, the planet gears rotate around their own axes and revolve around the sun gear, thereby driving the ring gear to rotate and realizing the rotation of the slewing platform. This structure can convert the high-speed and low-torque of the hydraulic motor into the low-speed and high-torque required by the slewing platform through multi-stage gear reduction. For example, the Caterpillar excavator slewing reducer adopts such a structure. Through optimizing the gear module, tooth surface hardening treatment (such as carburizing and quenching process) and precision assembly process, the torque output efficiency is effectively improved.
Compatible Models
Model
Part Number
Description
ZX330-1
4419718
Swing motor HITACHI ZX330-1
ZX240-3
4625367
Swing motor ZX240-3
R250-7
31N7-10180
Swing motor R250-7
R320LC-7
31n8-12010
Swing motor R320LC-7
DX140
K1007357B
Swing gearbox DX140
R140-7
31E6-12030
Swing gearbox R140-7
ZX70
4445648
Swing gearbox ZX70
JS130/JS145
LNM0437
Swing Gearbox
E314C
467-4412
Swing Gearbox
E315C/E315DL/E318DL
333-3015
Swing Gearbox
Kobelco SK140
YY32W00004F1
Swing Gearbox
Case CX210B
LN00111
Swing Gearbox
Kobelco SK75-8
YR32W00002F1
Swing Gearbox
CX210C
KRC10221
Swing motor
Pump Assembly Parts
No.
Description
Part Number
Model
43
Pump Ass'y
705-56-34550
HM300-1-1L
44
Pump Ass'y
705-12-38011
HM350-1-1L
45
Pump Ass'y
705-52-31210
HM350-1-1L
46
Pump Ass'y
705-56-34590
HM350-1-1L
47
Pump Ass'y
705-56-33050
HM350-1-1L
48
Brake cooling Pump
705-41-07051
HM350/400-1-2
49
Pump Ass'y
705-22-40110
HM400-1
50
Pump Assy
705-52-31150
HM400-1-1L
51
PumpAssy
705-56-34490
HM400-1-1L
52
Pump Ass'y
705-56-33080
HM400-1-1L
53
Pump Ass'y
705-56-33040
HM400-1-1L
54
Pump Ass'y
705-95-07040
HM400-2-2R
55
Pump Ass'y
705-95-05110
HM400-2-2R
56
Pump Ass'y
705-95-07030/31
HM400-2-2R
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Year Established:
2013
Total Annual:
20000-3000000
Employee Number:
50~93
Ecer Certification:
Verified Supplier
GZ Yuexiang Engineering Machinery Co., Ltd.
GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t... GZ Yuexiang Engineering Machinery Co., Ltd.
GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t...