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 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 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 |
Set screws
|
| Bearing housing seal type |
Heavy-duty seal
|
| da |
55.563 mm
|
Shaft diameter |
|---|---|---|
| d2 |
82.55 mm
|
Collar outer diameter |
| A |
66.675 mm
|
Housing foot width |
| A5 |
100.806 mm
|
Width including end cover |
| B |
79.375 mm
|
Inner ring width |
| H |
63.5 mm
|
Height base to center |
| H1 |
38.1 mm
|
Housing foot height |
| H2 |
127 mm
|
Housing height |
| J |
min. 193.675 mm
|
Distance between attachment bolts, max. |
| J |
max. 203.2 mm
|
Distance between attachment bolts, min. |
| J |
198.438 mm
|
Distance of attachment bolts |
| L |
244.475 mm
|
Housing length |
| N |
19.05 mm
|
Width foot slot width |
| N1 |
23.813 mm
|
Length of attachment bolt hole |
| s |
28.575 mm
|
Centre line unit to side face of inner ring |
| S |
0.794 mm
|
Centre line of “fixed” bearing |
| T |
84.931 mm
|
Total width |
| GN |
1/8-27 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
99.6 kN
|
|---|---|---|
| Basic static load rating | C0 |
118 kN
|
| Fatigue load limit | Pu |
12.9 kN
|
| Limiting speed |
1 300 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 |
2.29 kN
|
| P90° |
45.4 kN
|
Safe load at 90° |
|---|---|---|
| P135° |
27.6 kN
|
Safe load at 135° |
| P180° |
30.7 kN
|
Safe load at 180° |
| Mass bearing unit |
5.49 kg
|
| Attachment bolt diameter | G |
0.625 in
|
|---|---|---|
| Set screws |
3/8-24 UNF-3A x 1/2″
|
|
| Number of set screws |
2
|
|
| Tightening torque for set screws |
28.246 N·m
|
|
| Grease quantity for relubrication |
5 g
|
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