Pillow (plummer) block ball bearing units consisting of an insert bearing mounted in a pressed steel housing that can be bolted to a support surface. In addition to being part of a unit, some pillow block housings for insert bearings are available as separate components. The SKF assortment includes units that are compliant with several industrial standards and meet many requirements.
| Compliance with standard |
ISO with centre height deviation
|
| Purpose specific |
For material handling applications
|
| Material, housing |
Pressed steel
|
| Sealing, bearing |
Seal and flinger on both sides
|
| Sealing type, bearing |
Contact, standard
|
| Sealing, unit |
Without
|
| Coating |
Zinc-coated housing
|
| d |
44.45 mm
|
Bore diameter |
|---|---|---|
| d1 |
≈ 56.8 mm
|
Shoulder diameter of inner ring |
| A |
45 mm
|
Base width |
| A1 |
31 mm
|
Top width |
| B |
49.2 mm
|
Width of inner ring |
| B4 |
8 mm
|
Distance from locking device side face to thread centre |
| H |
46.5 mm
|
Height of spherical seat centre |
| H1 |
6 mm
|
Foot height |
| H2 |
92 mm
|
Overall height |
| J |
128 mm
|
Distance between attachment bolts |
| L |
156 mm
|
Overall length |
| N |
14 mm
|
Diameter of attachment bolt hole |
| s1 |
30.2 mm
|
Distance from locking device side face to raceway centre |
| Basic dynamic load rating | C |
33.2 kN
|
|---|---|---|
| Basic static load rating | C0 |
21.6 kN
|
| Fatigue load limit | Pu |
0.915 kN
|
| Permissible radial housing load |
max. 4.2 kN
|
|
| Limiting speed |
4 300 r/min
|
|
|
Limiting speed with shaft tolerance h6
|
| Mass bearing unit |
1.1 kg
|
| Set screw | G2 |
5/16-24 UNF
|
|---|---|---|
| Hexagonal key size for set screw |
3.969 mm
|
|
| Recommended tightening torque for set screw |
6.5 N·m
|
|
| Recommended diameter for attachment bolts, mm | G |
12 mm
|
| Recommended diameter for attachment bolts, inch | G |
0.5 in
|
| Housing | P 85 |
| Bearing | YAR 209-112-2F |
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