Piloted (round) 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.
| Metric/inch series |
Inch
|
| Bearing insert |
Tapered roller bearing
|
| Bearing position |
Locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Heavy-duty seal
|
| da |
31.75 mm
|
Shaft diameter |
|---|---|---|
| d2 |
57.15 mm
|
Collar outside diameter |
| Da |
85.725 mm
|
Hub diameter |
| A |
56.356 mm
|
Housing height |
| A1 |
11.113 mm
|
Housing flange height |
| A2 |
1.588 mm
|
Centre line of free bearing |
| A3 |
19.05 mm
|
Hub height |
| A4 |
21.431 mm
|
Housing flange to machined flange face |
| A6 |
33.338 mm
|
Flange face to inner ring face |
| B |
69.85 mm
|
Inner ring width |
| J |
104.775 mm
|
Bolt pitch diameter |
| L |
127 mm
|
Housing outside diameter |
| N |
11.113 mm
|
Bolt hole diameter |
| s |
34.925 mm
|
Centre line unit to side face of inner ring |
| T |
69.85 mm
|
Overall unit width |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
54.3 kN
|
|---|---|---|
| Basic static load rating | C0 |
64 kN
|
| Fatigue load limit | Pu |
6.7 kN
|
| Comparative radial load rating | CF |
14.6 kN
|
| Limiting speed |
4 300 r/min
|
|
| Limiting value | e |
0.48
|
| Calculation factor | Y1 |
1.4
|
| Calculation factor | Y2 |
2.1
|
| Calculation factor | Y0 |
1.4
|
| Bearing mean diameter | dm |
45.3 mm
|
| Axial holding force of the locking mechanism | Pa |
5.84 kN
|
| Mass bearing unit |
2.18 kg
|
| Attachment bolt diameter | G |
9.525 mm
|
|---|---|---|
| Set screws |
5/16-18
|
|
| Number of set screws |
2
|
|
| Tightening torque for set screws |
17.513 N·m
|
|
| Grease quantity for relubrication |
2.8 g
|
|
| Tapped hole for push-out bolt | G2 |
3/8-16
|
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