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 inch dimensions.
| Metric/inch series |
Inch
|
| Bearing insert |
Spherical roller bearing
|
| Bearing position |
Locating
|
| Locking method |
SKF ConCentra
|
| Bearing housing seal type |
Radial lip seal
|
| da |
55.563 mm
|
Shaft diameter |
|---|---|---|
| d2 |
81.001 mm
|
Collar outer diameter |
| A |
60.325 mm
|
Housing foot width |
| A5 |
94.456 mm
|
Width including end cover |
| B |
65.484 mm
|
Inner ring width |
| H |
63.5 mm
|
Height base to center |
| H1 |
41.275 mm
|
Housing foot height |
| H2 |
129.778 mm
|
Housing height |
| J |
min. 163.513 mm
|
Distance between attachment bolts, max. |
| J |
max. 187.325 mm
|
Distance between attachment bolts, min. |
| J |
177.006 mm
|
Distance of attachment bolts |
| L |
225.425 mm
|
Housing length |
| N |
19.05 mm
|
Width foot slot width |
| N1 |
30.956 mm
|
Length of attachment bolt hole |
| s |
32.544 mm
|
Centre line unit to side face of inner ring |
| S |
0.794 mm
|
Centre line of “fixed” bearing |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
125 kN
|
|---|---|---|
| Basic static load rating | C0 |
127 kN
|
| Fatigue load limit | Pu |
13.7 kN
|
| Limiting speed |
3 100 r/min
|
|
| Limiting value | e |
0.24
|
| Calculation factor | Y1 |
2.8
|
| Calculation factor | Y2 |
4.2
|
| Calculation factor | Y0 |
2.8
|
| Bearing mean diameter | dm |
77.47 mm
|
| Axial holding force of the locking mechanism | Pa |
14.9 kN
|
| P90° |
46.3 kN
|
Safe load at 90° |
|---|---|---|
| P135° |
27.6 kN
|
Safe load at 135° |
| P180° |
32.9 kN
|
Safe load at 180° |
| Mass bearing unit |
5.44 kg
|
| Attachment bolt diameter | G |
0.625 in
|
|---|---|---|
| Set screws |
M6-1 x 16mm
|
|
| Number of set screws |
3
|
|
| Tightening torque for set screws |
7.909 N·m
|
|
| Grease quantity for relubrication |
5 g
|
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