F4BE 308-TRB-STH
Square flanged roller bearing unit with set screw locking, inch series with type E dimensionsSquare flanged roller bearing units consist of a tapered roller bearing mounted in a cast iron housing that can be bolted to a machine wall. They are robust, ready-to-mount units that are assembled, lubricated and sealed at the factory for maximum service life. Set screw units use a locking collar design to firmly secure the bearing inner ring to the shaft. Mounting is quick and easy.
- Ready to mount
- Factory lubricated and sealed
- Long service life
- Minimal maintenance
- Superior sealing ability
Description
| Metric/inch series | Inch |
| Bearing insert | Tapered roller bearing |
| Bearing position | Locating |
| Locking method | Set screws |
| Bearing housing seal type | Heavy-duty seal |
Dimensions
| da | 88.9 mm | Shaft diameter |
|---|---|---|
| d2 | 130.175 mm | Collar outer diameter |
| A | 114.3 mm | Housing width |
| A1 | 47.625 mm | Flange thickness |
| A2 | 69.85 mm | Machined face to centre line bearing |
| B | 127 mm | Inner ring width |
| J | 177.8 mm | Bolt distance or pitch diameter |
| L | 234.95 mm | Housing length |
| N | 20.638 mm | Bolt hole diameter |
| s | 63.5 mm | Inner ring centre to end |
| T | 133.35 mm | Total width |
| GN | 1/8-27 NPT | Thread of grease fitting |
|---|
Calculation data
| Basic dynamic load rating | C | 272 kN |
|---|---|---|
| Basic static load rating | C0 | 430 kN |
| Fatigue load limit | Pu | 47.5 kN |
| Comparative radial load rating | CF | 73.5 kN |
| Limiting speed | 1 550 r/min | |
| Limiting value | e | 0.5 |
| Calculation factor | Y1 | 1.35 |
| Calculation factor | Y2 | 2 |
| Calculation factor | Y0 | 1.3 |
| Bearing mean diameter | dm | 121.435 mm |
| Axial holding force of the locking mechanism | Pa | 23.4 kN |
Mass
| Mass bearing unit | 18.8 kg |
Mounting information
| Attachment bolt diameter | G | 0.75 in |
|---|---|---|
| Set screws | 1/2-13 | |
| Number of set screws | 4 | |
| Tightening torque for set screws | 69.486 N·m | |
| Grease quantity for relubrication | 17 g |
