7256-B-MP-UA
Angular contact ball bearing
Angular contact ball bearing 72..-B-MP, single row, solid brass cage
Replaces
7256B.MP.UA
Description
Metric
Imperial
Main Dimensions & Performance Data
| d | 280 mm | Bore diameter |
| D | 500 mm | Outside diameter |
| B | 80 mm | Width |
| Cr | 500,000 N | Basic dynamic load rating, radial |
| C0r | 880,000 N | Basic static load rating, radial |
| Cur | 23,300 N | Fatigue load limit, radial |
| nG | 1,940 1/min | Limiting speed |
| nϑr | 1,350 1/min | Reference speed |
| ≈m | 69.1 kg | Weight |
Mounting dimensions
| da min | 300 mm | Minimum diameter of shaft shoulder |
| Da max | 480 mm | Maximum diameter of housing shoulder |
| Db max | 489 mm | Maximum diameter of housing shoulder |
| ra max | 4 mm | Maximum fillet radius of shaft |
| ra1 max | 2 mm | Maximum fillet radius of housing |
Dimensions
| rmin | 5 mm | Minimum chamfer dimension |
| r1 min | 2 mm | Minimum chamfer dimension |
| D1 | 413 mm | Shoulder diameter on outer ring wide side face |
| d1 | 368 mm | Shoulder diameter on inner ring wide side face |
| a | 204 mm | Distance between the apexes of the pressure cones |
| α | 40 ° | Contact angle |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 200 °C | Operating temperature max. |
Additional information
| Amin | 130 µm | Axial clearance per set min. |
| Tol(+) | 16 µm | Tolerance for axial clearance or preload per set |
Your current product variant
| Design variant | B | Design variant B |
| Sealing | Without | not sealed |
| Cage | MP | solid brass cage, ball guided |
| Tolerance class | PN | Normal (PN) |
| Bearing with matched conditions for fitting in pairs | UA | bearing set with small axial internal clearance |
| Lubricant | Without | Bearing not greased |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
Characteristics
