Pillow block roller bearing units consist of a tapered roller bearing mounted in a non-split type E dimensions housing that can be bolted to a support surface. This variant has a two-bolt base and set screw locking, holding the shaft firmly against the inner ring of the bearing. The units are sealed and lubricated and ready to use. This assortment of units covers a wide range of requirements, in inch dimensions.
| Metric/inch series |
Inch
|
| Bearing insert |
Tapered roller bearing
|
| Bearing position |
Locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Heavy-duty seal
|
| da |
50.8 mm
|
Shaft diameter |
|---|---|---|
| d2 |
80.169 mm
|
Collar outer diameter |
| A |
63.5 mm
|
Housing foot width |
| B |
88.9 mm
|
Inner ring width |
| H |
57.15 mm
|
Height base to center |
| H1 |
33.338 mm
|
Housing foot height |
| H2 |
114.3 mm
|
Housing height |
| J |
min. 174.625 mm
|
Distance between attachment bolts, max. |
| J |
max. 180.975 mm
|
Distance between attachment bolts, min. |
| J |
177.8 mm
|
Distance of attachment bolts |
| L |
225.425 mm
|
Housing length |
| N |
19.05 mm
|
Width foot slot width |
| N1 |
22.225 mm
|
Length of attachment bolt hole |
| s |
44.45 mm
|
Centre line unit to side face of inner ring |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
139 kN
|
|---|---|---|
| Basic static load rating | C0 |
163 kN
|
| Fatigue load limit | Pu |
18.6 kN
|
| Comparative radial load rating | CF |
37.5 kN
|
| Limiting speed |
2 850 r/min
|
|
| Limiting value | e |
0.31
|
| Calculation factor | Y1 |
2.2
|
| Calculation factor | Y2 |
3.3
|
| Calculation factor | Y0 |
2.2
|
| Bearing mean diameter | dm |
68.915 mm
|
| Axial holding force of the locking mechanism | Pa |
15.6 kN
|
| Mass bearing unit |
5.22 kg
|
| Attachment bolt diameter | G |
0.625 in
|
|---|---|---|
| Set screws |
3/8-16
|
|
| Number of set screws |
4
|
|
| Tightening torque for set screws |
31.071 N·m
|
|
| Grease quantity for relubrication |
8.5 g
|
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