Rexroth Hydraulic Pump Bearing F-208174.6 A11V260 Crescent Needle Bearing Width - 23mm

1. Product Overview

F-208174.6 is a special curved crescent needle roller cage assembly customized for variable displacement hydraulic pump core components, matched model A4VG180 hydraulic pump, standard core dimension inner diameter 12mm, outer diameter 18mm.

Integrated structure consists of high-precision cylindrical needle rollers and reinforced nylon injection molded cage, built-in reserved oil hole design to ensure smooth circulation of hydraulic oil inside the pump, sufficient continuous lubrication for rolling contact surfaces. Curved arc overall outline perfectly fits the pump rotor arc raceway, evenly distribute radial pressure generated by high-pressure hydraulic oil during pump operation.

Needle rollers adopt integral quenched bearing steel, ultra-precision mirror surface grinding, uniform dimensional tolerance, low friction loss under high-speed reciprocating rotation; nylon cage has excellent oil resistance, impact resistance and dimensional stability, no deformation under long-term high-temperature hydraulic oil soaking. Widely used in construction machinery main hydraulic pumps, engineering vehicle hydraulic drive systems and mobile machinery hydraulic power assemblies.

2. Technical Specifications

Complete installation drawings, hydraulic pump assembly matching guide and high-temperature oil soaking durability test reports can be provided upon customer request.

3. Core Advantages

• Special crescent curved arc design, fully fit hydraulic pump rotor arc raceway, uniform load distribution of each needle roller, avoid local overpressure abrasion under high pressure working condition.
• Built-in independent oil hole structure, smooth hydraulic oil circulation channel, continuously supply lubricating oil to roller contact surface, effectively reduce high-speed friction heat generation.
• Glass fiber reinforced nylon cage, outstanding oil resistance and high temperature resistance, long-term soaking in hydraulic oil will not swell, crack or deform, stable guiding accuracy for needle rollers.
• Ultra-precision polished needle rollers, consistent dimensional tolerance, low vibration and low noise during pump high-speed operation, reduce hydraulic pump internal power loss.
• Compact miniature overall size, occupy minimal internal pump space, no need to modify pump housing during replacement, direct interchange installation for maintenance.
• Full customizable service support: P5 high precision roller upgrading, special high temperature resistant cage material, OEM laser marking, neutral export carton packaging.
• Strict roller sorting process, eliminate roller diameter difference, avoid unbalanced wear and early failure of hydraulic pump rotor and valve plate.
• Standard interchangeable size with original matching parts, suitable for aftermarket bulk maintenance replacement and hydraulic pump manufacturer OEM assembly supporting.

4. Application Scenarios

F-208174.6 curved crescent needle roller cage assembly is core vulnerable spare part for construction machinery hydraulic power system:

• A4VG180 series axial piston hydraulic pump internal rotor supporting roller assemblies for crawler excavators, loaders
• Mobile engineering vehicle main hydraulic drive pump core transmission supporting components
• Medium-large mobile machinery hydraulic power unit internal precision rolling parts
• Agricultural large harvester hydraulic variable pump matching needle roller cage assemblies
• Aftermarket interchangeable F series curved needle roller cage for hydraulic pump maintenance replacement
• Cost-effective high precision hydraulic pump bearing solution for hydraulic pump OEM manufacturers, construction machinery repair factories and engineering parts bulk suppliers.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience for F series special curved needle roller cage assemblies including F-208174.6
• F-208174.6 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 parts distributors.
• 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 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 injection molding integrated forming process, precise oil hole positioning and standard crescent arc forming, stable structural strength
• Classified targeted performance testing: F-208174.6 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-208174.6 assemblies passes full sampling high-speed reciprocating rotation test to guarantee stable long-term supporting performance inside A4VG180 hydraulic pumps and construction machinery hydraulic systems.

7. Get A Quote Now

If you need high precision F-208174.6 crescent needle roller cage assemblies matched for A4VG180 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 is the unique structural feature of F-208174.6?
A1: It is a special crescent curved needle roller cage assembly without outer ring, matched exclusively for A4VG180 hydraulic pump rotor, built-in oil hole 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 working inside hydraulic pumps.

Q3: What equipment is F-208174.6 mainly used for?
A3: Mainly applied to A4VG180 axial piston hydraulic pumps installed on excavators, loaders and other construction machinery hydraulic power systems.