F-225036.2 Width - 27mm Metric Needle Bearings for Rexroth Hydraulic Pump P6 P5 P4

1. Product Overview

1.Product Overview
F-225036.2 is a customized crescent curved needle roller cage assembly belonging to F series special hydraulic pump rolling components, matched for heavy-duty axial piston hydraulic pumps used on construction machinery. It integrates ultra-precision cylindrical needle rollers and glass fiber reinforced PA66 nylon cage, with built-in integrated oil circulation channels inside the cage to realize uninterrupted hydraulic oil supply to rolling contact surfaces under long-time high-pressure continuous operation.

Special curved crescent outline perfectly fits the inner arc raceway of pump rotor, evenly distribute radial extrusion pressure generated by high-pressure hydraulic oil, effectively avoid local overloading and premature abrasion of rotor and valve plate. Needle rollers adopt through-hardened GCr15 bearing steel with mirror superfinishing and strict dimensional sorting, consistent roller tolerance, low friction loss and stable low-noise high-speed reciprocating operation performance. Reinforced nylon cage features outstanding oil resistance, high temperature resistance and anti-deformation capacity, no swelling, cracking or dimensional distortion after long-term soaking in high-temperature anti-wear hydraulic oil. Widely used in crawler excavator main hydraulic pumps, wheel loader hydraulic power units, mobile mining machinery hydraulic drive systems and heavy agricultural variable pump core supporting assemblies.

2. Technical Specifications

3. Core Advantages

1. Custom crescent curved arc molding design, fully fit hydraulic pump rotor arc raceway, evenly share pressure of each needle roller, greatly extend service life of hydraulic pump core components under long-time high-pressure working conditions.
2. Built-in independent through oil passage structure, form smooth internal hydraulic oil circulation channel, continuously deliver lubricating medium to roller contact area, reduce high-speed friction heat generation and internal power loss of hydraulic pump.
3. Glass fiber reinforced nylon retainer, excellent high temperature and oil aging resistance, maintain accurate roller guiding precision without deformation after long-term immersion in hydraulic oil.
4. Mirror polished needle rollers with strict diameter sorting process, eliminate roller size deviation, avoid unbalanced wear and abnormal noise of hydraulic pump caused by inconsistent roller clearance.
5. Miniature compact integral outline, occupy tiny internal pump cavity space, direct interchange replacement without modifying pump housing during equipment maintenance and repair.
6. Full customizable service support: P5 high precision roller upgrade, high temperature modified cage material, OEM laser marking on cage surface, neutral export carton packaging.
7. One-piece injection molding cage forming process, stable structural rigidity, strong anti-impact capacity against instantaneous hydraulic pressure fluctuation during pump startup and shutdown.
8. Fully interchangeable overall dimension with original pump matching spare parts, suitable for aftermarket bulk maintenance replacement and hydraulic pump manufacturer OEM assembly supporting supply.

4. Application Scenarios

F-225036.2 curved crescent needle roller cage assembly is core vulnerable spare part for heavy construction machinery hydraulic power system:

• Heavy-duty axial piston hydraulic pump internal rotor supporting roller assemblies for crawler excavators, wheel loaders
• Engineering vehicle main hydraulic drive pump core transmission supporting rolling components
• Mobile mining equipment hydraulic power unit internal precision curved needle assemblies
• Large agricultural heavy harvester variable hydraulic pump matching needle roller cage sets
• Aftermarket interchangeable F series crescent curved needle roller cage for hydraulic pump maintenance replacement
• Cost-effective high precision hydraulic pump special bearing solution for hydraulic pump OEM manufacturers, construction machinery repair factories and engineering hydraulic spare parts bulk distributors.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience for F series special curved needle roller cage assemblies including F-225036.2
• F-225036.2 fully dimensionally interchangeable with standard hydraulic pump matching needle roller assemblies, consistent roller dimensional tolerance and cage arc matching indicators.
• Complete OEM & ODM customization service supporting high precision roller upgrading, high temperature resistant cage material modification and customized marking service.
• Full strict pre-delivery inspection: GCr15 roller hardness test, roller surface roughness inspection, nylon cage high-temperature oil soaking aging test, arc fitting matching detection.
• Professional hydraulic pump bearing engineering team provides pump rotor assembly matching and installation clearance adjustment technical guidance within 24 hours.
• Stable mass production lines with favorable bulk wholesale prices for long-term hydraulic pump manufacturers, construction machinery repair factories and engineering hydraulic parts suppliers.
• We focus on curved arc high-pressure pump special roller design, low friction high temperature resistant performance, direct interchange maintenance structure and long-term win-win cooperation with global construction machinery hydraulic spare parts buyers.

6. Quality Control

• Raw material chemical composition and surface hardness inspection of GCr15 bearing steel needle rollers
• Precision cutting, quenching tempering and mirror superfinishing processing for all needle rollers to ensure uniform smooth contact surface
• Glass fiber nylon integrated injection molding forming process, precise oil passage positioning and standard crescent arc forming, stable structural strength
• Classified targeted performance testing: F-225036.2 long-cycle high-speed rotation aging test, high-temperature hydraulic oil continuous soaking durability test, roller dimensional consistency sorting detection
• Needle roller assembly into cage, full dimensional and arc fitting recheck before anti-rust oil coating and carton packaging shipment
• Each batch of F-225036.2 assemblies passes full sampling high-speed reciprocating rotation test to guarantee stable long-term supporting performance inside axial piston hydraulic pumps and construction machinery hydraulic systems.

7. Get A Quote Now

If you need high precision F-225036.2 crescent needle roller cage assemblies matched for heavy-duty axial piston hydraulic pumps for construction machinery hydraulic system maintenance & OEM matching, send your inquiry directly.
You will receive complete professional supporting services after submitting your inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one hydraulic pump rotor matching installation technical guidance from professional F series special needle roller engineers
• Customized bearing scheme suggestions including P5 high precision roller upgrade options
• Competitive direct factory bulk wholesale price for large spare parts bulk orders
• Send your required purchase quantity and equipment high-speed, high-pressure & high-temperature hydraulic oil working environment to obtain detailed formal quotation.

8. FAQ

Q1: What structural feature does F-225036.2 have?
A1: It is a special crescent curved needle roller cage assembly without inner and outer rings, exclusively designed for heavy axial piston hydraulic pump rotor, built-in through oil passages for continuous hydraulic oil lubrication.
Q2: What material is the cage made of?
A2: Reinforced glass fiber PA66 nylon, with excellent oil resistance and high temperature resistance, suitable for long-term continuous working inside hydraulic pump cavity.
Q3: What equipment is F-225036.2 mainly applied to?
A3: Mainly matched with heavy axial piston hydraulic pumps installed on excavators, loaders and other construction machinery hydraulic power systems.