Insert Roller Bearing PNA22/44 Needle Roller Aligning Bearing 22x44x20mm

1. Product Overview

1.Product Overview
PNA22/44 belongs to metric PNA series self-aligning split adjustable eccentric needle roller bearing, complete with integrated quenched inner ring, unified standard dimension inner bore d=22mm, outer diameter D=44mm, overall width B=20mm. It adopts spherical outer ring matching split outer sleeve structure, supporting tiny center distance fine adjustment and static self-aligning compensation to eliminate assembly deviation between shaft and housing holes.
The pre-assembled whole set consists of high-precision cylindrical needle rollers, stamped steel cage and solid inner ring. The split outer sleeve reserves tightening clearance, and the adjusted eccentric position can be locked by bolt compression after positioning. All bearing rings and needle rollers are made of full quenched GCr15 bearing steel through ultra-precision grinding process. Needle rollers are strictly sorted with consistent dimensional tolerance, delivering stable low-noise rotation under medium alternating radial load. Widely used for printing machine tension rollers, automatic packaging film unwinding shafts, medium-sized light conveyor support rollers and textile large auxiliary rotary positioning assemblies.

2. Technical Specifications

3. Core Advantages

• Spherical self-aligning outer ring plus split adjustable outer sleeve dual structure, effectively offset shaft and housing machining & assembly errors, reduce equipment assembly failure rate.
• Equipped with integrated heat-treated inner ring as standard, no extra hardening and grinding treatment required for matching shaft, simplify accessory processing and shorten assembly cycle.
• Compact thin-wall radial design, takes up little radial installation space, ideal matching component for narrow roller support structures of printing and packaging medium-sized machinery.
• Mirror superfinished needle rollers with strict diameter sorting, uniform stress distribution of each roller, low operating noise and slight temperature rise during long medium-speed continuous operation.
• Split outer sleeve with compression gap, the eccentric position can be firmly locked after tightening bolts without displacement in long-term equipment operation.
• Full customizable service support: C3 enlarged radial clearance, P6 high precision grade, OEM laser marking on outer sleeve, neutral export carton anti-rust packaging.
• Integral pre-assembled bearing unit, steel cage stably fixes needle rollers to avoid roller scattering during disassembly and maintenance.
• Passivation anti-corrosion treatment on the surface of outer sleeve, good rust resistance for indoor light dust industrial working environments.

4. Application Scenarios

PNA22/44 self-aligning split adjustable needle roller bearing is core adjustable supporting spare part for medium light industrial transmission equipment:

• Printing machinery paper feeding roller, heavy tension roller rotary support bearing assemblies
• Automatic packaging equipment film unwinding roller transmission positioning units
• Medium-weight material conveying equipment main roller support bearing positions
• Large textile spinning auxiliary transmission shafts, medium garden power equipment rotary joints

Aftermarket interchangeable 22mm bore PNA series self-aligning eccentric needle roller bearing
Cost-effective misalignment compensation needle bearing solution for printing machine OEM, packaging equipment factories and medium light conveyor machinery bulk matching.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience for PNA series self-aligning split adjustable needle roller bearings including PNA22/44
• PNA22/44 fully dimensionally interchangeable with international standard PNA series self-aligning needle bearings, consistent adjustment range, load rating and assembly tolerance indicators.
• Complete OEM & ODM customization service supporting C3 clearance upgrade, high precision grade and special surface anti-rust treatment.
• Full strict pre-delivery inspection: GCr15 ring hardness test, needle roller dimensional sorting inspection, split sleeve repeated adjustment fatigue test, high-speed continuous rotation aging test.
• Professional needle bearing engineering team provides eccentric fine-tuning and shaft housing matching installation technical guidance within 24 hours.
• Stable mass production lines with favorable bulk wholesale prices for long-term printing equipment manufacturers, packaging machinery suppliers and medium light conveyor equipment factories.
• We focus on spherical self-aligning split adjustable design, integrated inner ring all-in-one structure, compact space-saving layout and long-term win-win cooperation with global light industrial transmission spare parts buyers.

6. Quality Control

• Raw material chemical composition and hardness inspection of GCr15 bearing steel inner ring and split outer sleeve
• Precision stamping, cutting, quenching tempering and finish grinding processing for spherical outer ring and solid inner ring
• Needle roller precision cutting, hardening and mirror superfinishing, automatic dimensional sorting screening process
• Stamped steel cage integrated forming and automatic roller assembly procedure to evenly control roller clearance
• Classified targeted performance testing: PNA22/44 long-cycle medium-speed rotation aging test, repeated eccentric adjustment fatigue test, radial combined load deformation detection
• Full dimensional and surface defect recheck before anti-rust oil coating and carton packaging shipment

Each batch of PNA22/44 bearings passes full sampling radial load reciprocating rotation test to guarantee stable long-term self-aligning support performance inside printing, packaging and medium light conveyor transmission equipment.

7. Get A Quote Now

8. FAQ