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RITO 321701 Cylinder Block Valve Plate Rear PC350-7 PC360-7 321701 Hydraulic Pump Rotor Group Excavator Pump Repair

Internal scoring on your pump's cylinder block faces drops volumetric efficiency, slowing down your machine's cycle times. Worn rotor groups generate excessive friction heat, which risks seizing the entire hydraulic main pump. Rebuild your pump using the high-precision RITO 321701 cylinder block.

  • Item NO.:

    321701
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Restore peak operating pressures and smooth control responses during demanding heavy-duty operations. Wholesale procurement teams rely on the RITO 321701 rotor group assembly to provide excavator rebuild shops with long-lasting parts that lower total repair costs.

321701 Cylinder Block with Valve Plate

 
Product Specifications

Part Number  321701
Part Name Hydraulic Pump Rotor Group Excavator Pump Repair
Compatible Brand Tongmyung
Applicable Models PC350-7, PC360-7 Excavators
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Polished Steel Silver
Working Temperature -25°C to 120°C
Key Function Holding pump pistons and creating fluid displacement
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Bimetallic Bonded Face

Combine durable steel blocks with a low-friction bronze layer to reduce operating wear.

Leak-Free

Micron-Level Bore Precision

Minimize internal oil slippage around pistons to maximize pump volumetric output.

Direct Fitment

Optimized Valve Plate Match

Deliver a flat, flush fitment to eliminate high-pressure fluid leaks.

Rigorous Testing

 Multi-Tier Quality Options

We provide Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets and performance needs.

 

Excavator Hydraulic Part

FAQ


Q: Fault Diagnosis: How do technicians identify a scored 321701 cylinder block?
A: Excessive internal case drain flow, low system pressure under load, and a high-pitched whining noise point to deep scratches on the cylinder block's matching face.
 
Q: Installation Standards: What is the proper procedure for seating a new rotor block?
A: Coat the piston bores and face generously with clean hydraulic oil. Check that the block splines slide smoothly onto the drive shaft without binding.
 
Q: Procurement Verification: Does this kit include both the rear cylinder block and valve plate?
A: Yes, RITO 321701 includes the precision-matched cylinder block and corresponding valve plate to ensure optimal seating and reliable operation.

 

Q:  What quality options are available?

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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Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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