Factory note: This page is an application identification reference for quotation. Final interchangeability depends on the controlled drawing, dimensions and inspection scope agreed for the order.
- Evidence type
- Factory replacement reference
- Typical series
- 4.054–4.063, PR4.054–PR4.056, 4.454–4.463
- Matched profiles
- Standard 0–5 NbV / JDG62–JDG123
- Production base
- Changzhou manufacturing plant
Application background
Forklift mast stages use combined bearings to carry radial load and side thrust inside steel U-profiles. Buyers often quote a WINKEL, JD, MR or TR number together with truck capacity and mast position.
Common inquiries cover fixed-axial standard bearings, precision PR executions and eccentric-adjustable 4.45x series when channel clearance must be set on assembly.
What we confirm before quotation
Send the complete marking, d × D × H envelope, axial-roller type, seal or grease preference, quantity and destination. Photos of the mast channel and the mating NbV profile help avoid interchange mistakes.
Where plate-mounted assemblies are used, include the AP plate designation or a controlled plate drawing. Final approval depends on the drawing revision and operating duty agreed for the order.
Related page: Combined bearings for forklift masts