
the weight of this hydraulic main pump HPK055 piston is 0.14KG/PC.
and it's sold in set.
9 pieces a set.
it needs 2 sets for one hydraulic pump HPK055.
but people need one set oftenly, for the rear side or front side.
maybe they are not all broken for the 18 pieces,
they can choose 9 pieces good one and only need to order another 9 pieces new.
and when it used to Hitachi excavator model ZX120-6,
the part numbder for the piston is 8071391.
by the way, sometimes, there might be different types pump parts for same pump model.
In such case, maybe you will be required to help to provide the piston size to double clarify.
the total length and the diamater.
HPK055 Main Pump includes below parts:
Model | DESCRIPTION | QUANTITY |
HPK 055 (ZX120-6 Hydraulic Main Pump) | CYLINDER BLOCK & VALVE PLATE FRONT | 1 |
CYLINDER BLOCK & VALVE PLATE REAR | 1 | |
DISC SPRING SET | 4 | |
SET PLATE & BALL GUIDE | 1 | |
PISTON SHOE SET | 9 | |
SHOE PLATE | 1 | |
SWASH PLATE FRONT & CRADLE | 1 | |
SWASH PLATE REAR & CRADLE | 1 | |
SERVO PISTON | 1 | |
SPRING COMPRES | 1 |
Part No | Parts name |
1026892 | CASING;FRONT |
2038178 | SHAFT;DRIVE |
4355286 | RACE;INNER |
4229543 | RING;RETAINING |
4280841 | BRG.;ROL. |
991342 | RING;RETAINING |
4343074 | O-RING |
4198956 | PIN |
2042069 | PLATE |
M340613 | BOLT;SOCKET |
1025666 | PLATE;SWASH |
4382272 | PLATE |
4407464 | PLATE |
9134109 | PLUG |
4506408 | O-RING |
2042059 | ROTOR |
4289874 | SPRING;DISC |
3065991 | BUSHING |
3065989 | RETAINER |
8071391 | PISTON |
4410166 | O-RING |
1025540 | CASING;REAR |
2038174 | SHAFT;DRIVE |
1025667 | PLATE;SWASH |
4355279 | BRG.;ROL. |
927488 | RING;RETAINING |
3076 | CASING;PUMP |
4355272 | BRG.;NEEDLE |
4355277 | BRG.;NEEDLE |
4461927 | BRG.;NEEDLE |
4271350 | PIN;KNOCK |
4422627 | PIN;KNOCK |
2044792 | PLATE;VALVE |
2044793 | PLATE;VALVE |
4428917 | PISTON;SERVO |
4397537 | SPRING;COMPRES. |
4409640 | PIN;KNOCK |
4432356 | PIN |
4436322 | RING;BACK-UP |
4180349 | O-RING |
4200227 | PIN |
3081504 | LINK |
4397509 | PIN |
4465289 | PIN |
4404102 | PIN |
4144013 | PIN;SPRING |
4116299 | PIN;SPRING |
M341240 | BOLT;SOCKET |
495841 | WASHER;SPRING |
M341240 | BOLT;SOCKET |
4393030 | BOLT |
4427347 | PLUG |
9134111 | PLUG |
4509180 | O-RING |
9134110 | PLUG |
957366 | O-RING |
495841 | WASHER;SPRING |
A590912 | WASHER;SPRING |
4436271 | SENSOR;PRES. |
4365826 | O-RING |
4265372 | SENSOR;REVOL. |
4306888 | O-RING |
A590106 | WASHER;PLANE |
M340616 | BOLT;SOCKET |
4252767 | BRACKET |
M340613 | BOLT;SOCKET |
4169516 | WASHER;SPRING |
4515041 | PIN;SPRING |
4348665 | O-RING |
4180349 | O-RING |
4343074 | O-RING |
4320490 | SEAL;OIL |
930451 | RING;RETAINING |
4463047 | KIT;SEAL |
Our PRIMARY COMPETITIVE ADVANTAGES:
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Contact: Mr. Sum Huang
WeChat:+8613060908795
Whatsapp:+8613060908795
Guangzhou Sonka Engineering Machinery Co., Ltd.
Guangzhou Sonka Engineering Machinery Co., Ltd.
Loion: Guangzhou, China
Business scope:excavator spare parts
Fit for machine model brand: Komatsu, Hitachi, Kobelco, Kato, , Daewoo, Sumitomo, Hyundai, Volvo
Start
Sonka Company grew out of Global Engineering Machinery.
Time back in 2009, a spare parts shop named GLOBAL ENGINEERING MACHINERY established in Guangzhou City. Soon but stably, it sold its spare parts to more than 30 cities in domestic China in the same year, with the fame spreading far and wide, for the good product quality and service.
At that time the shop mainly sold mainly in seal and seal kits lines: excavator seal kits, loader seal kits, bulldozer seal kits, breaker seal kits and other construction machinery-related seals.
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Growing
To meet customer’s growing needs on seal kits, in 2013, a new company named Guangzhou Huanqiu Seal Technology Co. LTD was set up to handling the seal factory. Factory manufactures all kinds of seals for construction machinery.
It then lay solid foundations for oncoming development. |
HQPA stands for High Quality Product Assurance! |
Expand
With rich experience and established technique, customers are satisfied with our seal kits for high quality and good performance.
And we would like to share these seal kits with the world outside China. In the year of 2014, we creates the Guangzhou Sonka Engineering Machinery Co. Ltd, a branch trading company, to deal with all the oversea business.
Prospect
In the year 2020, Sonka Company will upgrade our brand. We will set up Management Service Center in the oversea market to promote our uniform brand all over the world.
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