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. The units are sealed and lubricated and ready to use. This assortment of units covers a wide range of requirements, in metric and inch dimensions.
| Metric/inch series |
Inch
|
| Bearing insert |
Spherical roller bearing
|
| Bearing position |
Locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Radial lip seal
|
| Shaft diameter | da |
49.213 mm
|
|---|---|---|
| Collar diameter | d2 |
73.787 mm
|
| Housing width | A |
58.738 mm
|
| Width of piloting groove | A1 |
17.475 mm
|
| Width of flange in which piloting grooves are provided | A2 |
50.8 mm
|
| Inner ring width | B |
73.025 mm
|
| Overall housing height | H |
120.65 mm
|
| Distance between bottoms of piloting grooves | H1 |
101.6 mm
|
| Height of attachment end | H2 |
84.138 mm
|
| Overall length | L |
157.163 mm
|
| Distance from attachment end face to centre line of bearing | L1 |
100.013 mm
|
| Length of attachment end | L2 |
23.813 mm
|
| Length of guiding slot | L3 |
92.075 mm
|
| Diameter of attachment bolt hole | N |
28.575 mm
|
| Length of attachment slot | N1 |
19.05 mm
|
| Height of attachment slot | N2 |
49.213 mm
|
| Inner ring center to end | s1 |
50.089 mm
|
| Centre line of locating support | S |
0.794 mm
|
| Overall unit width | T |
75.406 mm
|
| Thread of grease fitting | GN |
1/8-27 NPT
|
|---|
| Fatigue load limit | Pu |
11 kN
|
|---|---|---|
| Limiting speed |
4 100 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 |
70.104 mm
|
| Axial holding force of the locking mechanism | Pa |
2.29 kN
|
| Mass |
4.22 kg
|
| Set screw |
3/8″-24 UNF-3A x 1/2″
|
| Tightening torque for set screws |
28.246 N·m
|
| Grease quantity for relubrication |
4 g
|
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