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RITO 138850 Cylinder Block M2X210 Hydraulic Pump Cylinder Block Rotor Group Excavator Piston Pump Repair Spare Parts Repair

Scaled or scored piston bores allow massive pressure leaks, slowly killing your hydraulic system efficiency and driving up fuel costs. Swap out worn internals with the precision-ground RITO 138850 cylinder block assembly today.

  • Item NO.:

    138850
  • Order(MOQ):

    1
  • Payment:

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

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

The RITO 138850 piston barrel delivers flawless sealing surfaces that easily restore original hydraulic pressure curves. Keep this critical service component in your inventory to fulfill urgent workshop repair requests instantly.

138850 Cylinder block

 
Product Specifications

Part Number  138850
Part Name Hydraulic Pump Cylinder Block Rotor Group Excavator Piston Pump Repair Spare Parts
Compatible Brand Tongmyung
Applicable Models EX200-5, ZAX200 Excavators
Application Excavator hydraulic system
Material High‑strength Alloy Steel
Product Color Polished Steel Silver
Working Temperature -35°C to 115°C
Key Function Housing piston shoes to generate hydraulic system volume flow
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

High-Density Bimetal Casting

Copper-alloy face layer offers exceptional anti-friction properties against the valve plate.

Leak-Free

True Drop-In Dimensional Matc

Built strictly to master blueprints for effortless rotating group restoration.

Direct Fitment

Extreme Pressure Endurance

Built to handle continuous heavy-duty cyclic loading without structural stress cracking.

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: What specific hydraulic failures indicate that a 138850 pump barrel has suffered severe internal wear?
A: A noticeable drop in oil flow rate under high loads, elevated pump casing temperatures, and unusual whining noises. These symptoms suggest that the piston bore tolerances have widened, letting pressurized oil slip back into the suction side.
 
Q: Installation Standards: What preparation is required before placing this cylinder block into the pump housing?
A: Technicians must thoroughly coat the internal bores and face plate with clean hydraulic fluid. Ensure that the splined drive shaft aligns perfectly without force, and verify that the piston shoes slide freely inside each barrel chamber.
 
Q: Procurement Verification: Will this 138850 block set fit aftermarket pumps, or is it strictly for original equipment rebuilds?
A: This block is machined to universal standard dimensions for this specific pump series. It interfaces seamlessly with both OEM housings and high-quality replacement pump groups used on M2X210 motor configurations.
 
Q: Extreme Environment Performance: How does the bimetallic face of this cylinder block prevent galling during high-heat mining operations?
A: The premium copper alloy bonded to the steel block functions as a solid lubricant during brief thermal spikes. This specialized layer prevents metal-on-metal welding when operating oil temperatures temporarily peak past normal limits.
 
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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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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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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