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 four-bolt base, creating a stable and robust unit, 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 |
Non-locating
|
| Locking method |
Set screws
|
| Bearing housing seal type |
Radial lip seal
|
| da |
125.413 mm
|
Shaft diameter |
|---|---|---|
| d2 |
174.625 mm
|
Collar outer diameter |
| A |
130.175 mm
|
Housing foot width |
| A5 |
176.213 mm
|
Width including end cover |
| B |
168.275 mm
|
Inner ring width |
| H |
139.7 mm
|
Height base to center |
| H1 |
79.375 mm
|
Housing foot height |
| H2 |
280.988 mm
|
Housing height |
| J |
min. 384.175 mm
|
Distance between attachment bolts, max. |
| J |
max. 412.75 mm
|
Distance between attachment bolts, min. |
| J |
398.463 mm
|
Distance of attachment bolts |
| J1 |
69.85 mm
|
Axial distance bolt to bolt |
| L |
469.9 mm
|
Housing length |
| N |
25.4 mm
|
Width foot slot width |
| N1 |
39.688 mm
|
Length of attachment bolt hole |
| s |
84.138 mm
|
Centre line unit to side face of inner ring |
| S |
5.08 mm
|
Centre line of “fixed” bearing |
| GN |
1/4-18 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
547 kN
|
|---|---|---|
| Basic static load rating | C0 |
801 kN
|
| 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
|
| P90° |
146 kN
|
Safe load at 90° |
|---|---|---|
| P135° |
91.6 kN
|
Safe load at 135° |
| P180° |
94.3 kN
|
Safe load at 180° |
| Mass bearing unit |
45.5 kg
|
| Attachment bolt diameter | G |
0.875 in
|
|---|---|---|
| Set screws |
5/8″-18 UNF-2A x 7/8″
|
|
| Number of set screws |
4
|
|
| Tightening torque for set screws |
149.705 N·m
|
|
| Grease quantity for relubrication |
28 g
|
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