F-222190 Cam Follower Bearing F-222190.1 Heidelberg Printing Machine 10x26x38mm

1. Product Overview

F-222190 and F-222190.1 are integral heavy-duty needle roller bearings specially developed for excavator variable plunger hydraulic pumps. The two models share identical overall installation dimensions, with minor optimized structural differences for different pump internal cavity tolerance requirements.

The bearing unit integrates outer race, high-strength needle rollers and precision stamped steel retainer as one piece. Dense needle roller linear contact structure bears high-frequency alternating hydraulic impact pressure during pump full-load operation, effectively reducing friction loss and surface peeling failure. All core components adopt fully quenched GCr15 bearing steel with ultra-precision superfinished rolling surface, stable wear resistance under long-time high-pressure oil immersion environment. Compact integrated embedded structure fits the pump swash plate and cylinder block installation space perfectly, no extra positioning sleeve needed, easy press-fit assembly and disassembly during pump overhaul. Widely applied to main hydraulic pumps of excavators, loaders, bulldozers and other engineering machinery.

2. Technical Specifications

Differentiation between two models:

• F-222190: Standard tolerance general version, suitable for most standard plunger pump inner cavity
• F-222190.1: Optimized dimensional tolerance upgraded version, tighter fit clearance for high-speed high-pressure pump working conditions

Complete hydraulic pump installation drawings, swash plate assembly disassembly guide and long-cycle high-pressure impact durability test reports can be provided upon customer request.

3. Core Advantages

• Two tolerance versions for selective matching: standard F-222190 for conventional pumps, upgraded F-222190.1 for high-speed heavy pressure pumps, one dimension covers multiple pump models.
• Integrated all-in-one forming structure, directly embedded into pump inner cavity without additional auxiliary parts, simplify pump assembly process and improve production efficiency.
• Dense evenly distributed needle rollers with uniform stress dispersion, strong resistance to instantaneous hydraulic impact, avoid local raceway wear and early bearing failure.
• Mirror superfinished contact surface with low friction coefficient, effectively control internal temperature rise of pump body under continuous full-load operation, prevent oil carbonization and bearing seizure.
• Full integral quenching heat treatment reaches HRC60–65 high hardness, outstanding anti-fatigue and wear resistance, significantly extend hydraulic pump overhaul cycle.
• Precision stamped steel retainer firmly locks all needle rollers, prevent needle displacement and scattering under long-time reciprocating alternating load of plunger pump.
• Universal interchangeable installation size, fully compatible with original F series hydraulic pump bearings for mainstream construction machinery plunger pumps, no pump body modification during replacement.
• Comprehensive customized service: stainless steel anti-rust material upgrade, OEM laser marking on outer race surface, neutral export carton anti-rust packaging, high-temperature anti-wear hydraulic grease pre-filling.

4. Application Scenarios

F-222190 / F-222190.1 integral needle roller bearings are core wear-resistant heavy-load spare parts for construction machinery hydraulic systems:

• Excavator main variable plunger hydraulic pump swash plate and cylinder block support bearing assemblies
• Loader, bulldozer heavy-duty plunger pump internal rolling matching units
• Medium and large engineering machinery high-pressure hydraulic motor, rotary pump core transmission components
• Heavy industrial hydraulic station variable pump, high-pressure oil pump wear-resistant support positions
• Aftermarket interchangeable F series hydraulic pump dedicated needle roller bearing
• Cost-effective high-pressure anti-impact bearing solution for construction machinery maintenance factories and hydraulic pump OEM mass procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of construction machinery hydraulic pump integral needle roller bearings including F-222190 and F-222190.1
• Both models fully dimensionally interchangeable with original hydraulic pump matching bearings, consistent impact resistance, pressure wear resistance and assembly tolerance standards.
• Complete OEM & ODM customization service supporting special tolerance adjustment, stainless steel anti-corrosion material and custom surface laser marking.
• Strict full pre-delivery inspection procedures: GCr15 raw material hardness test, needle roller dimensional sorting screening, long-cycle high-pressure impact aging test, reciprocating friction fatigue wear simulation test.
• Professional hydraulic pump bearing engineering team provides one-on-one pump model matching, hydraulic oil grade selection and pump core disassembly installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory direct bulk wholesale price for mixed batch orders of two tolerance versions, long-term stable supply for global engineering machinery hydraulic spare parts suppliers.
• We specialize in integral compact needle roller structure, high-pressure anti-impact wear-resistant design, pump universal interchangeable layout and long-term win-win cooperation with construction machinery hydraulic transmission equipment buyers.

6. Quality Control

• Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel outer race and needle roller blanks
• Precision ring stamping, quenching & tempering, ultra-mirror rolling surface finish grinding process for integral outer ring
• Cylindrical needle roller high-temperature quenching, superfinishing and high-precision automatic dimensional sorting production line
• Stamped steel retainer stamping forming and automatic needle assembly process, strictly control internal needle running clearance and circumferential uniformity
• Targeted classified performance testing: Separate long-cycle high-pressure alternating impact aging test for F-222190 standard version and F-222190.1 upgraded tight tolerance version, repeated swash plate reciprocating friction fatigue test, high-temperature hydraulic oil corrosion wear detection
• Full dimensional tolerance, surface crack and roughness recheck before anti-rust oil coating and export carton moisture-proof packaging shipment
• Every production batch of F-222190 and F-222190.1 bearings undergoes full sampling hydraulic pump simulation rotation test to guarantee stable long-term heavy impact wear-resistant support performance in engineering machinery variable plunger hydraulic pumps.

7. Get A Quote Now

If you need F-222190 standard and F-222190.1 upgraded tight tolerance integral needle roller bearings for excavator hydraulic pump maintenance and construction machinery hydraulic pump OEM bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one excavator pump model matching, hydraulic oil grade selection and pump core disassembly installation technical guidance from professional hydraulic pump bearing engineers
• Customized bearing performance solutions including stainless steel anti-rust upgrade and special clearance adjustment options
• Competitive direct factory bulk wholesale price for mixed batch delivery of F-222190 and F-222190.1
• Provide your required purchase quantity, hydraulic pump model and continuous high-pressure working environment to obtain detailed formal quotation document.

8. FAQ