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 |
125.413 mm
|
|---|---|---|
| Collar diameter | d2 |
174.625 mm
|
| Housing width | A |
127 mm
|
| Width of piloting groove | A1 |
52.4 mm
|
| Width of flange in which piloting grooves are provided | A2 |
106.363 mm
|
| Inner ring width | B |
168.275 mm
|
| Overall housing height | H |
285.75 mm
|
| Distance between bottoms of piloting grooves | H1 |
260.35 mm
|
| Height of attachment end | H2 |
177.8 mm
|
| Overall length | L |
396.875 mm
|
| Distance from attachment end face to centre line of bearing | L1 |
261.938 mm
|
| Length of attachment end | L2 |
63.5 mm
|
| Length of guiding slot | L3 |
228.6 mm
|
| Diameter of attachment bolt hole | N |
60.325 mm
|
| Length of attachment slot | N1 |
63.5 mm
|
| Height of attachment slot | N2 |
95.25 mm
|
| Inner ring center to end | s1 |
84.125 mm
|
| Centre line of locating support | S |
0.794 mm
|
| Overall unit width | T |
138.113 mm
|
| Thread of grease fitting | GN |
1/8-27 NPT
|
|---|
| Fatigue load limit | Pu |
77.8 kN
|
|---|---|---|
| Limiting speed |
1 650 r/min
|
|
| Limiting value | e |
0.26
|
| Calculation factor | Y1 |
2.6
|
| Calculation factor | Y2 |
3.9
|
| Calculation factor | Y0 |
2.5
|
| Bearing mean diameter | dm |
180.086 mm
|
| Axial holding force of the locking mechanism | Pa |
10.7 kN
|
| Mass |
50.7 kg
|
| Set screw |
5/8″-18 UNF-2A x 7/8″
|
| Tightening torque for set screws |
149.705 N·m
|
| Grease quantity for relubrication |
28 g
|
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