Order(MOQ):
1pcGoods Stock:
100Payment:
T/T, Western Union, L/C, Paypal, etcProduct Origin:
KoreaShipping Port:
Huangpu, GuangzhouLead Time:
In StockPart No:
640102Model:
Application:
EXCAVATOROTTO Excavator Hydraulic Pump Cylinder Block 640102
This Tongmyung cylinder block is the core rotating component of axial piston main pump, accommodating piston assemblies and distributing high-pressure hydraulic oil.
Precision machined bores and hardened surface reduce piston seizure and internal leakage, stabilizing pump flow and preventing unexpected hydraulic breakdown.
| Item | Details |
|---|---|
| Product Name | Hydraulic Pump Tongmyung Cylinder Block |
| Part Number | 640102 |
| Brand | Tongmyung Original |
| Material | Heat-Treated Alloy Steel, Precision Machined Bore Surface |
| Application | Rotating core part of axial piston hydraulic main pump |
| Applicable Machine | Crawler Excavator |
| Applicable Model | Matched with Tongmyung pump series for medium & large excavators |
| Key Parameters | Bore tolerance and flatness controlled for piston and valve plate matching |
| Function | Holds piston assemblies, rotates with drive shaft, transfers suction and pressure hydraulic oil |
| Operating Temperature | -20℃ ~ +85℃ |
| Weight | 6.8 KG/pc |
| Quality & Condition | Brand New Tongmyung Original |
| Warranty | 6 months |
Key Product Advantages
Compatible Equipment & Fitment Details
Direct OEM Replacement / Cross References: 640102 Compatible Machine Models: Hitachi: ZAX330, EX300-5 Kato: HD1430 Volvo: EC360 Kobelco: SK350-8 Related Components / Assembly: Valve plate, piston shoe, pump repair kit, retainer plate Installation Note: Fully clean pump housing and oil passages before assembly; check surface flatness and clearance; follow pump overhaul torque requirements.
Applications & Operational Environments
| Application Description | Performance |
|---|---|
| Inside main hydraulic pump, rotating with drive shaft | Guides piston reciprocation to build hydraulic pressure for digging cycles |
| Mining & Quarrying Sites | Withstands repeated pressure surges and rotation friction, resists bore scoring |
| High-Temperature Working Zones | Hardened alloy surface maintains stability under long-duration high oil temperature |
| Demolition & Dusty Work Sites | Fine precision bores block abrasive dust from jamming piston movement |
| Excavator Maintenance | Replace scored, cracked or deformed cylinder block to restore pump volumetric efficiency |
| Repair Workshops & Fleets | Standard original dimension speeds up pump rebuild, cuts machine idle downtime |
Our Advantages
1.TECHNICAL SERVICE
We provide modification technology service, the product has been tested modifed, the engine can be directly installed and used.
2.CERTIFICATE
With Export certificate License.Double confirmation before shipping, if we sent the wroncparts we will send corect one.
3.SERVICE TEAM
With professional after-sale team, will help you to trace the goods. And our engineers will assist with any installation issues.
4.TECHNICAL SERVICE
Free Sample is acceptable.We serves manywell-known Hitachi Komatsu Caterpillar Kobelco in your country.
FAQ
Q1: Is secondary programming or special adjustment required after installation?
A: No programming required. It is a mechanical rotating part. After assembly, bleed air and test hydraulic pressure following the pump service manual.
Q2: How can buyers confirm this cylinder block matches their excavator correctly?
A: Please send machine model, original pump model and old part number. We verify pump structure and bore layout before shipment.
Q3: What pre-shipment tests are performed and what does the warranty cover?
A: Each cylinder block undergoes dimension and surface visual inspection. Warranty covers manufacturing defects; damage from oil contamination or improper assembly is excluded.
Q4:What can you buy from us?(2) Small order:DHL,TNT,UPS,FEDEX,EMS,ARAMEX.
Q7:What's the terms of the transaction?
A:EXW,FCA,FAS,FOB, C&F,CIF,CPT,CIP,DAF,DES,DDP.
Q8:How about the lead time?
A:(1) ln stock: 1-3 days.Always in 24 hours.
(2) Out of stock: lt's according to your quantity, and we have cooperated with factory,We will let you know when we quote.
Tags :
Tel : +86-15302269990
WhatsApp : +8615302269990
WhatsApp : +8619125112809
E-mail : service@gzotto.com
E-mail : sales02@gzotto.com
Address : No.1108 & 1109 Tower 2, Yuzhu haisi innovation Center, Huangpu District, Guangzhou, China
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