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 |
Tapered roller bearing
|
| Bearing position |
Locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Heavy-duty seal
|
| da |
125 mm
|
Shaft diameter |
|---|---|---|
| d2 |
174.625 mm
|
Collar outside diameter |
| Da |
279.4 mm
|
Hub diameter |
| A |
128.588 mm
|
Housing height |
| A1 |
31.75 mm
|
Housing flange height |
| A2 |
16.669 mm
|
Centre line of free bearing |
| A3 |
44.45 mm
|
Hub height |
| A4 |
47.625 mm
|
Housing flange to machined flange face |
| A6 |
75.406 mm
|
Flange face to inner ring face |
| B |
184.15 mm
|
Inner ring width |
| J |
323.85 mm
|
Bolt pitch diameter |
| L |
374.65 mm
|
Housing outside diameter |
| N |
23.813 mm
|
Bolt hole diameter |
| s |
92.075 mm
|
Centre line unit to side face of inner ring |
| T |
184.15 mm
|
Overall unit width |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
618 kN
|
|---|---|---|
| Basic static load rating | C0 |
1 040 kN
|
| Fatigue load limit | Pu |
106 kN
|
| Comparative radial load rating | CF |
170 kN
|
| Limiting speed |
1 150 r/min
|
|
| Limiting value | e |
0.46
|
| Calculation factor | Y1 |
1.5
|
| Calculation factor | Y2 |
2.2
|
| Calculation factor | Y0 |
1.4
|
| Bearing mean diameter | dm |
166.776 mm
|
| Axial holding force of the locking mechanism | Pa |
31.1 kN
|
| Mass bearing unit |
55.1 kg
|
| Attachment bolt diameter | G |
22.225 mm
|
|---|---|---|
| Set screws |
5/8-11
|
|
| Number of set screws |
4
|
|
| Tightening torque for set screws |
148.575 N·m
|
|
| Grease quantity for relubrication |
42.5 g
|
|
| Tapped hole for push-out bolt | G2 |
7/8-9
|
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