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 |
50.8 mm
|
Shaft diameter |
|---|---|---|
| d2 |
80.169 mm
|
Collar outside diameter |
| Da |
114.3 mm
|
Hub diameter |
| A |
73.819 mm
|
Housing height |
| A1 |
14.288 mm
|
Housing flange height |
| A2 |
3.175 mm
|
Centre line of free bearing |
| A3 |
30.163 mm
|
Hub height |
| A4 |
26.194 mm
|
Housing flange to machined flange face |
| A6 |
41.275 mm
|
Flange face to inner ring face |
| B |
88.9 mm
|
Inner ring width |
| J |
136.525 mm
|
Bolt pitch diameter |
| L |
161.925 mm
|
Housing outside diameter |
| N |
12.7 mm
|
Bolt hole diameter |
| s |
44.45 mm
|
Centre line unit to side face of inner ring |
| T |
88.9 mm
|
Overall unit width |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
139 kN
|
|---|---|---|
| Basic static load rating | C0 |
163 kN
|
| Fatigue load limit | Pu |
18.6 kN
|
| Comparative radial load rating | CF |
37.5 kN
|
| Limiting speed |
2 850 r/min
|
|
| Limiting value | e |
0.31
|
| Calculation factor | Y1 |
2.2
|
| Calculation factor | Y2 |
3.3
|
| Calculation factor | Y0 |
2.2
|
| Bearing mean diameter | dm |
68.915 mm
|
| Axial holding force of the locking mechanism | Pa |
7.78 kN
|
| Mass bearing unit |
4.49 kg
|
| Attachment bolt diameter | G |
11.113 mm
|
|---|---|---|
| Set screws |
3/8-16
|
|
| Number of set screws |
2
|
|
| Tightening torque for set screws |
31.071 N·m
|
|
| Grease quantity for relubrication |
8.5 g
|
|
| Tapped hole for push-out bolt | G2 |
7/16-14
|
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