Pillow (plummer) block roller bearing units and take-up roller bearing units consist of a spherical or tapered roller bearing mounted in a non-split housing that can be bolted to a support surface. This variant has a spherical roller bearing, a two-bolt base and SKF ConCentra locking, creating a true concentric tight fit, and setting the correct internal clearance within the bearing. The units are sealed and lubricated and ready to use. This bearing unit covers a wide range of requirements, in metric dimensions.
| Metric/inch series |
Metric
|
| Bearing insert |
Spherical roller bearing
|
| Bearing position |
Non-locating
|
| Locking method |
SKF ConCentra
|
| Bearing housing seal type |
Labyrinth seal
|
| da |
75 mm
|
Shaft diameter |
|---|---|---|
| d2 |
101 mm
|
Collar outer diameter |
| A |
90 mm
|
Housing foot width |
| B |
72 mm
|
Inner ring width |
| H |
95 mm
|
Height base to center |
| H1 |
32 mm
|
Housing foot height |
| H2 |
180 mm
|
Housing height |
| J |
260 mm
|
Distance of attachment bolts |
| L |
320 mm
|
Housing length |
| N |
22 mm
|
Width foot slot width |
| N1 |
28 mm
|
Length of attachment bolt hole |
| S |
2.5 mm
|
Axial displacement |
| A4 |
80 mm
|
Distance bearing centre line to end cover |
|---|---|---|
| ba |
max. 70 mm
|
Distance bearing centre line to shaft end |
| ba |
min. 38 mm
|
Distance bearing centre line to shaft end |
| J6 |
292 mm
|
Distance dowel pins |
|---|---|---|
| J7 |
32.5 mm
|
Distance dowel pins |
| N4 |
8 mm
|
Pin hole diameter |
| Basic dynamic load rating | C |
212 kN
|
|---|---|---|
| Basic static load rating | C0 |
240 kN
|
| Fatigue load limit | Pu |
26.5 kN
|
| Limiting speed |
3 300 r/min
|
|
| Limiting value | e |
0.22
|
| Calculation factor | Y1 |
3
|
| Calculation factor | Y2 |
4.6
|
| Calculation factor | Y0 |
2.8
|
| Bearing mean diameter | dm |
102.5 mm
|
| Axial holding force of the locking mechanism | Pa |
25 kN
|
| P0° |
370 kN
|
Breaking load |
|---|---|---|
| P55° |
415 kN
|
Breaking load |
| P90° |
250 kN
|
Breaking load |
| P120° |
165 kN
|
Breaking load |
| P150° |
150 kN
|
Breaking load |
| P180° |
220 kN
|
Breaking load |
| Mass bearing unit |
12 kg
|
| Attachment bolt diameter | G |
20 mm
|
|---|---|---|
| Tightening torque for attachment bolts |
385 N·m
|
|
| Set screws |
M6
|
|
| Number of set screws |
5
|
|
| Tightening torque for set screws |
8 N·m
|
|
| Grease quantity for relubrication |
8 g
|
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