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. It has an insert bearing with SKF ConCentra locking, creating a true concentric tight fit, and setting the correct internal clearance within 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 |
SKF ConCentra
|
| Bearing housing seal type |
Labyrinth seal
|
| da |
125.413 mm
|
Shaft diameter |
|---|---|---|
| d2 |
164.998 mm
|
Collar outer diameter |
| A |
149.225 mm
|
Housing foot width |
| A5 |
188.119 mm
|
Width including end cover |
| B |
117.094 mm
|
Inner ring width |
| H |
152.4 mm
|
Height base to center |
| H1 |
60.325 mm
|
Housing foot height |
| H2 |
305.594 mm
|
Housing height |
| J |
min. 396.875 mm
|
Distance between attachment bolts, max. |
| J |
max. 441.325 mm
|
Distance between attachment bolts, min. |
| J |
419.1 mm
|
Distance of attachment bolts |
| J1 |
85.725 mm
|
Axial distance bolt to bolt |
| L |
511.175 mm
|
Housing length |
| N |
28.575 mm
|
Width foot slot width |
| N1 |
50.8 mm
|
Length of attachment bolt hole |
| s |
58.42 mm
|
Centre line unit to side face of inner ring |
| GN |
1/4-18 NPT
|
Thread of grease fitting |
|---|
| Basic dynamic load rating | C |
758 kN
|
|---|---|---|
| Basic static load rating | C0 |
930 kN
|
| Fatigue load limit | Pu |
88.1 kN
|
| Limiting speed |
2 600 r/min
|
|
| Limiting value | e |
0.27
|
| Calculation factor | Y1 |
2.5
|
| Calculation factor | Y2 |
3.7
|
| Calculation factor | Y0 |
2.5
|
| Bearing mean diameter | dm |
180.086 mm
|
| Axial holding force of the locking mechanism | Pa |
64.9 kN
|
| Mass bearing unit |
56.2 kg
|
| Attachment bolt diameter | G |
1 in
|
|---|---|---|
| Set screws |
M8-1.25 x 20mm
|
|
| Number of set screws |
7
|
|
| Tightening torque for set screws |
18.078 N·m
|
|
| Grease quantity for relubrication |
28 g
|
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