F-206878.6 Polyamide Cage Needle Roller Bearing Width - 15mm

1. Product Overview

F-206878.6 is professional split crescent half-moon needle roller bearing exclusively matched for Rexroth A4VG71 axial piston hydraulic pump, core pressure-resistant rotating spare part for construction machinery hydraulic system.

Different from integral full-circle bearings, it adopts segmented arc split structure, perfectly fits the special arc inner cavity of A4VG71 pump housing, consists of high-precision cylindrical needle rollers and reinforced engineering plastic retainer, independently bears continuous heavy radial load under high oil pressure working environment. All rolling elements and arc outer base are made of GCr15 high-carbon chrome bearing steel, overall quenching and mirror superfinishing raceway, strong resistance to hydraulic oil corrosion, abrasive wear and high-frequency impact load. Widely used for excavator, road roller, loader and other engineering vehicle A4VG71 main hydraulic pump maintenance replacement.

2. Technical Specifications

Complete arc contour drawings, pump assembly matching tolerance and pressure durability test reports can be provided upon customer request.

3. Key Advantages

1. Custom split half-moon arc structure, 1:1 original size interchangeable with A4VG71 pump, no modification required during pump disassembly and replacement, greatly shorten maintenance downtime
2. High-density uniform needle roller layout, line contact heavy load bearing capacity, stable operation under long-term high hydraulic pressure without deformation and abnormal noise
3. GCr15 integral quenching arc base with ultra-precision grinding surface, excellent anti-wear and anti-oil-corrosion performance, effectively extend hydraulic pump service life
4. Reinforced nylon retainer firmly locks needle rollers, prevent roller scattering during pump high-speed rotation, stable circulation under frequent variable pressure impact
5. Strictly controlled dimensional tolerance, consistent arc fit clearance with pump housing, avoid oil leakage and pressure drop caused by loose fit
6. Customizable options: brass high-temperature cage, stainless steel anti-rust needle rollers, OEM laser marking, high-pressure anti-hydrolysis special grease filling

Effectively reduce hydraulic pump internal wear failure rate and construction equipment shutdown maintenance cost

4. Applications

This F-206878.6 split crescent needle roller bearing is dedicated maintenance spare part for engineering machinery hydraulic pumps:

• Rexroth A4VG71 series axial piston main hydraulic pump core rotary supporting component
• Excavator, wheel loader, road roller, paver engineering vehicle hydraulic system replacement parts
• Mining small engineering machinery, agricultural heavy machinery A4VG71 pump overhaul accessories
• Hydraulic pump maintenance factory, machinery repair shop universal pump wearing spare parts
• Aftermarket replacement bearing unit for A4VG71 hydraulic pump split needle roller assembly

Ideal high-pressure wear-resistant split bearing solution for construction machinery A4VG71 hydraulic pump overhaul

5. Why Choose GQZ Bearing

• 25 years of professional hydraulic pump special split crescent needle roller bearing manufacturing experience
• F-206878.6 fully dimensionally interchangeable with original pump standard bearings, consistent arc contour, load resistance and pressure durability indicators
• Complete OEM & ODM customized service supporting brass cage, stainless steel rollers and special high-temperature grease customization
• Full-process strict inspection: raw material hardness test, arc surface grinding precision detection, high-pressure oil immersion cycle durability test before delivery
• Professional hydraulic pump bearing engineering team provides pump housing matching clearance and installation operation guidance within 24 hours
• Stable mass production capacity with preferential bulk wholesale price for long-term machinery repair factories and engineering equipment manufacturers

We focus on original interchangeable size, stable high-pressure wear resistance and long-term win-win cooperation with global construction machinery spare parts buyers

6. Quality Control

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision arc turning, quenching tempering and raceway mirror superfinishing processing for split crescent base
• Constant temperature stress relief heat treatment process to stabilize arc deformation resistance under high pressure
• Special hydraulic medium simulation performance testing: 35MPa high-pressure oil immersion durability test, radial load wear resistance test, arc fitting clearance uniformity inspection
• Needle roller sorting, retainer assembly and split bearing group dimensional & appearance recheck before anti-rust oil packaging and shipment

Every batch of F-206878.6 bearings passes full sampling high-pressure reciprocating load cycle test to guarantee stable long-term operation inside A4VG71 hydraulic pump

7. Get a Quote Now

If you need high pressure wear-resistant F-206878.6 split crescent needle roller bearings for Rexroth A4VG71 hydraulic pump engineering machinery maintenance, send your inquiry to us directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one A4VG71 pump housing arc matching clearance & installation operation technical guidance by hydraulic pump bearing professional engineers
• Customized bearing solution suggestions including brass high-temperature cage and stainless steel anti-rust needle roller variants
• Competitive direct factory bulk wholesale price for large machinery repair spare parts bulk orders

Send your required purchase quantity and equipment working hydraulic pressure environment to obtain detailed formal quotation

8. FAQ

1. Q1: Which hydraulic pump is F-206878.6 exclusively suitable for?
   A1: It is specially matched for Rexroth A4VG71 axial piston hydraulic pump, split half-moon arc size completely fits the inner cavity structure of A4VG71 pump housing.
2. Q2: What is the difference between split crescent bearing and ordinary full-circle needle bearing?
   A2: F-206878.6 adopts segmented arc split design, aiming at the special non-circular inner cavity of hydraulic pump; ordinary integral bearings cannot be installed inside A4VG71 pump housing.
3. Q3: Can this bearing work under long-term high hydraulic pressure?
   A3: Yes, GCr15 quenched material and dense needle roller structure support stable operation under 0~35MPa continuous hydraulic oil pressure, strong anti-impact and anti-wear performance.