Excessive main shaft play or twisted spline configurations throw the entire piston rotating group out of alignment, causing internal valve friction and costly pump housing crackdowns. Safeguard your pressure core with the RITO 321708 hydraulic pump drive shaft.
Item NO.:
321708Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSOur rugged RITO 321708 main input shaft provides straight structural rotation to optimize volumetric oil flow rates and lower bearing heat generation. Add this core component to your inventory to ensure long-lasting main pump overhauls.

| Part Number | 321708 |
|---|---|
| Part Name | Excavator Main Pump Shaft Piston Pump Shaft Part |
| Compatible Brand | Tongmyung |
| Applicable Models | PC300-7, PC350-7, PC360-7 Excavators |
| Application | Excavator hydraulic system |
| Material | High‑strength Alloy Steel |
| Product Color | Polished Steel Silver |
| Working Temperature | -35°C to 115°C |
| Key Function | Transferring engine flywheel mechanical force to rotate the internal piston barrels |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Mirror-polished bearing interfaces reduce friction heat to protect sensitive high-speed shaft seals.

Tough input splines resist torsional distortion during rapid hydraulic system pressure build-ups.

Precision-machined line balance prevents destructive harmonic vibrations from destroying adjacent cylinder components.


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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