Round flanged ball bearing units with pressed steel housing consist of an insert bearing mounted in a pressed steel housing that can be bolted to a machine wall or frame. In addition to being part of a unit, housings and insert bearings are available as separate components. The SKF assortment includes ball bearing units compliant with several industrial standards, meeting many requirements regarding bolt patterns and mechanisms for locking onto on the shaft.
| Compliance with standard |
ISO
|
| Purpose specific |
For agricultural 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 |
25 mm
|
Bore diameter |
|---|---|---|
| d1 |
≈ 33.74 mm
|
Outer diameter of inner ring |
| A2 |
9 mm
|
Width of housing half |
| A4 |
2 mm
|
Top width |
| B |
34.1 mm
|
Width of inner ring |
| B4 |
5 mm
|
Distance from locking device side face to thread centre |
| H |
95 mm
|
Overall length |
| H2 |
min. 56 mm
|
Abutment diameter |
| J |
76.2 mm
|
Pitch diameter of attachment bolts |
| N |
8.7 mm
|
Length of attachment bolt hole |
| s1 |
19.8 mm
|
Distance from locking device side face to raceway centre |
| T |
21.8 mm
|
Overall unit width |
| Basic dynamic load rating | C |
14 kN
|
|---|---|---|
| Basic static load rating | C0 |
7.8 kN
|
| Fatigue load limit | Pu |
0.335 kN
|
| Permissible radial housing load |
max. 3.6 kN
|
|
| Limiting speed |
7 000 r/min
|
|
|
Limiting speed with shaft tolerance h6
|
| Mass bearing unit |
0.37 kg
|
| Set screw | G2 |
M6x0.75
|
|---|---|---|
| Hexagonal key size for set screw |
3 mm
|
|
| Recommended tightening torque for set screw |
4 N·m
|
|
| Recommended diameter for attachment bolts, mm | G |
8 mm
|
| Recommended diameter for attachment bolts, inch | G |
0.3125 in
|
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