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.
Suffixes, seals, lubrication, OD variants and mounting plates can change fit. Send the complete marking and a controlled drawing for confirmation.
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
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