F-225036.1 Hydraulic Pump Bearing Needle Roller Bearing Width - 27mm

1. Product Overview

F-225036.1 is F series special crescent curved needle roller cage assembly, interchangeable alternative model F-225036.01, specially customized for heavy-duty axial piston hydraulic pumps of construction machinery. It consists of ultra-precision cylindrical needle rollers and glass fiber reinforced PA66 nylon cage, integrated through-type oil passages reserved inside the cage to realize continuous hydraulic oil lubrication for rolling contact surfaces under long-time high-pressure continuous operation.

Exclusive crescent curved outline perfectly fits pump rotor inner arc raceway, evenly disperse radial extrusion pressure generated by high-pressure hydraulic oil, effectively avoid local overload, rotor and valve plate premature wear failure. Needle rollers adopt through-hardened GCr15 bearing steel with mirror superfinishing and strict diameter sorting, uniform dimensional tolerance, low friction loss, stable low-noise high-speed reciprocating rotation performance. Reinforced nylon cage has excellent oil aging resistance and high temperature stability, no swelling, cracking or dimensional deformation after long-term soaking in high-temperature anti-wear hydraulic oil. Widely applied to 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

Complete installation drawings, pump rotor assembly matching manual and long-cycle high-temperature oil soaking durability test reports can be provided upon customer request.

3. Core Advantages

1. Custom crescent curved arc integrated molding design, fully fit hydraulic pump rotor arc raceway, each needle roller bears uniform pressure, greatly extend service life of hydraulic pump core components under long-time high-pressure working state.
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, outstanding 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 pump noise 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-225036.1 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-225036.1
• F-225036.1 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-225036.1 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-225036.1 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

8. FAQ

1. Q1: What structural feature does F-225036.1 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; equivalent part F-225036.01.
2. 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.
3. Q3: What equipment is F-225036.1 mainly applied to?
   A3: Mainly matched with heavy axial piston hydraulic pumps installed on excavators, loaders and other construction machinery hydraulic power systems.