Flanged roller bearing units consist of an insert bearing mounted in a cast housing that can be bolted to a machine wall or frame. In addition to being part of a unit, some flanged housings for insert bearings are available as separate components. The SKF assortment includes roller bearing units compliant with several industrial standards, meeting many requirements regarding bolt patterns and mechanisms for locking onto on the shaft.
| Metric/inch series |
Inch
|
| Bearing insert |
Spherical roller bearing
|
| Bearing position |
Locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Radial lip seal
|
| da |
112.713 mm
|
Shaft diameter |
|---|---|---|
| d2 |
155.575 mm
|
Collar outside diameter |
| Da |
260.35 mm
|
Hub diameter |
| A |
93.663 mm
|
Housing height |
| A1 |
25.4 mm
|
Housing flange height |
| A2 |
3.454 mm
|
Centre line of free bearing |
| A3 |
37.306 mm
|
Hub height |
| A4 |
42.863 mm
|
Housing flange to machined flange face |
| A5 |
149.225 mm
|
Width including end cover |
| A6 |
80.963 mm
|
Flange face to inner ring face |
| B |
155.575 mm
|
Inner ring width |
| J |
298.45 mm
|
Bolt pitch diameter |
| L |
342.9 mm
|
Housing outside diameter |
| N |
20.638 mm
|
Bolt hole diameter |
| s |
84.138 mm
|
Centre line unit to side face of inner ring |
| S |
0.794 mm
|
Centre line of “fixed” bearing |
| GN |
1/4-28 UNF
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
408 kN
|
|---|---|---|
| Basic static load rating | C0 |
560 kN
|
| Fatigue load limit | Pu |
56.9 kN
|
| Limiting speed |
1 900 r/min
|
|
| Limiting value | e |
0.25
|
| Calculation factor | Y1 |
2.7
|
| Calculation factor | Y2 |
4
|
| Calculation factor | Y0 |
2.5
|
| Bearing mean diameter | dm |
154.94 mm
|
| Axial holding force of the locking mechanism | Pa |
10.7 kN
|
| Mass bearing unit |
30.8 kg
|
| Attachment bolt diameter | G |
19.05 mm
|
|---|---|---|
| Set screws |
5/8″-18 UNF-2A x 7/8″
|
|
| Number of set screws |
4
|
|
| Tightening torque for set screws |
149.705 N·m
|
|
| Grease quantity for relubrication |
21 g
|
|
| Tapped hole for push-out bolt | G2 |
3/4-10 UNC
|
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