Flanged ball bearing units consisting of an insert bearing mounted in a composite or cast metal housing that can be bolted to a machine wall or frame. In addition to being part of a unit, some flanged housings for 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 the shaft.
| Compliance with standard |
ISO
|
| Purpose specific |
For material handling applications, For air handling applications
|
| Material, housing |
Composite
|
| Sealing, bearing |
Seal and flinger on both sides
|
| Sealing type, bearing |
Contact, standard
|
| Sealing, unit |
Optional end cover
|
| Coating |
Without
|
| d |
30 mm
|
Bore diameter |
|---|---|---|
| d1 |
≈ 39.7 mm
|
Outer diameter of inner ring |
| d2 |
48 mm
|
Outside diameter of locking ring |
| A |
33 mm
|
Overall width |
| A1 |
15.3 mm
|
Flange width |
| A3 |
3.2 mm
|
Depth of centring recess |
| A5 |
22 mm
|
Standout of end cover |
| B |
28 mm
|
Width of inner ring |
| B1 |
37.2 mm
|
Overall bearing width |
| Db |
78 mm
|
Top external diameter |
| Dc |
93.7 mm
|
Diameter of housing centering recess |
| J |
82.5 mm
|
Distance between attachment bolts |
| L |
108 mm
|
Overall length |
| N |
12.3 mm
|
Diameter of attachment bolt hole |
| s1 |
23.2 mm
|
Distance from locking device side face to raceway centre |
| T |
43.2 mm
|
Overall unit width |
|
Values specified for B1 and s1 are approximate and before the set screw is tightened (sleeve and inner ring bore at starting position).
|
||
| Basic dynamic load rating | C |
19.5 kN
|
|---|---|---|
| Basic static load rating | C0 |
11.2 kN
|
| Fatigue load limit | Pu |
0.475 kN
|
| Limiting speed |
6 300 r/min
|
| Mass bearing unit |
0.5 kg
|
| Set screw | G2 |
M5
|
|---|---|---|
| Hexagonal key size for set screw |
2.54 mm
|
|
| Recommended tightening torque for set screw |
4.2 N·m
|
|
| Recommended diameter for attachment bolts, mm | G |
10 mm
|
| Recommended diameter for attachment bolts, inch | G |
0.375 in
|
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