Configuration illustration for this bearing family. Use the specification table and controlled drawing for final verification.
Precision combined bearing
PR4.056
Precision combined roller bearing compatible with AP2, AP2-LUB and AP2-Q mounting plate configurations.
Cross-reference note: WINKEL and other manufacturer designations are used for buyer identification. We manufacture compatible bearings to the confirmed drawing unless an original branded product is expressly quoted.
Specifications
PR4.056 technical data
| d | 40 mm |
|---|---|
| D | 81.8 mm |
| H | 48 mm |
| h | 36.5 mm |
| B | 23 mm |
| S | 24 mm |
| A | 3 mm |
| r | 4 mm |
| T | 54 mm |
| Material | 20CrMnTi |
Selection notice: Dimensions and catalog ratings are factory reference data. Verify the controlled drawing during quotation.
PR4.056 cross references
Common purchasing and maintenance references include PR4.056 · DR400-0056 · JD81.8-48 · AP2 · AP2-LUB · AP2-Q · DR4000056 · DR-400-0056 · DR 400 0056 .
Suffixes, seals, lubrication, OD variants and mounting plates can change fit. Send the complete marking and a controlled drawing for confirmation.
How buyers commonly identify this bearing
Purchasing teams, forklift service companies and machine builders may describe the same requirement in different ways. These descriptions are useful search clues, not proof of interchangeability:
- PR4.056 combined bearing replacement
- PR4.056 combined roller bearing dimensions
- PR4.056 mast guide bearing
- WINKEL PR4.056 compatible bearing
- DR400-0056 bearing equivalent
- JD81.8-48 bearing equivalent
- AP2 bearing equivalent
- AP2-LUB bearing equivalent
Execution guidance
Precision design and inspection
Design function
The precision family uses a controlled radial outside diameter for tighter guide accuracy.
Installation and adjustment
Do not replace it with a standard-OD version without confirming profile clearance and the controlled drawing.
Inspection focus
Record radial OD, runout, axial position and the specified precision class.
Application
Application and RFQ checklist
Plate-mounted lift guides, steel sections and precision material-handling assemblies.
Information required for selection
- Dimensions
- d, D, H, B, S, T and plate or stud geometry
- Load
- Radial load, axial load, shock, speed and duty cycle
- Execution
- Standard, precision, fixed axial or eccentric-adjustable
- Environment
- Temperature, contamination, sealing and lubrication
Related combined bearing models
Browse adjacent models for dimensions, applications and common cross references.
