Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | 81256 | |
| Bore diameter | d | 280 mm |
| Outside diameter | D | 380 mm |
| Width | B | 80 mm |
| Reference speed | nref | 295 r/min |
| Limiting speed | nG | 870 r/min |
| Mass | ≈m | 30.15 kg |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 395917 | |
| Brand | INA | |
| Base Type | 81256 | |
| Old Designation | ["812 56 M"] | |
| X Life Marking | n.r. |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Axial cylindrical roller bearing 812..-M, single row | |
| Short Description | Axial cylindrical roller bearing |
Technical Data16 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 280 mm | |
| Outside Diameter (D) | 380 mm | |
| Width (B) | 80 mm | |
| Basic Dynamic Load Rating, Axial (Ca) | 1,470,000 N | |
| Basic Static Load Rating, Axial (C0A) | 5,600,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Minimum Diameter Shaft Shoulder (Da) | 373 mm | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Limiting Speed (Ng) | 870 1/min | |
| Reference Speed (Nϑr) | 295 1/min | |
| Maximum Recess Radius (Ra Max) | 2.1 mm | |
| Maximum Diameter Of Housing Shoulder (Da) | 300 mm | |
| Rip Diameter Shaft Washer (D1) | 375 mm | |
| Bore Diameter Housing Washer (D1) | 284 mm | |
| Minimum Chamfer Dimension (Rmin) | 2.1 mm | |
| Fatigue Load Limit, Axial (Cua) | 495,000 N |
