Experiencing heavy vibrations or weak hydraulic response from the front circuit of your excavator's main pump? Scored piston chambers and scratched valve surfaces allow massive internal oil slippage, hurting attachment performance and overloading your return lines with extra heat. Rebuild your front pump system using the high-precision RITO 321702 rotating group.
Item NO.:
321702Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSQuarry parts distributors require high-quality internal pump components that hold up under continuous, high-pressure tracking and digging cycles. Our RITO 321702 front cylinder kit delivers excellent wear resistance and reliable volumetric efficiency. Keep this high-demand service kit in stock to satisfy urgent workshop repair requests instantly.

| Part Number | 321702 |
|---|---|
| Part Name | Front Cylinder Block Valve Plate Excavator Hydraulic Part |
| Compatible Brand | Tongmyung |
| Applicable Models | PC300-7, PC350-7, PC300-8 Excavators |
| Application | Excavator hydraulic system |
| Material | High‑strength Alloy Steel |
| Product Color | Polished Steel Silver |
| Working Temperature | -25°C to 120°C |
| Key Function | Generating front-circuit fluid displacement within the main axial pump housing |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

High-density copper alloy layer provides a durable, low-friction interface against the valve plate.

Micro-polished flow channels ensure clean, unobstructed oil distribution to the main valves.

Precision internal splines ensure a tight, balanced connection with the main input shaft.


FAQ
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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