Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts.
| Bore type |
Cylindrical
|
| d |
50 mm
|
Bore diameter |
|---|---|---|
| tΔdmp | -0.012 – 0 mm | Deviation limits of mid-range bore diameter |
| D |
90 mm
|
Outside diameter |
| tΔDmp | -0.015 – 0 mm | Deviation limits of mid-range outside diameter |
| B |
23 mm
|
Width |
| tΔBs | -0.06 – 0 mm | Deviation limits of ring width |
| d2 |
≈ 60 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 79 mm
|
Shoulder/recess diameter of outer ring |
| b |
5.5 mm
|
Width of lubrication groove |
| K |
3 mm
|
Diameter of lubrication hole |
| r1,2 |
min. 1.1 mm
|
Chamfer dimension |
|
Normal
|
ISO tolerance class for dimensions |
| da |
min. 57 mm
|
Diameter of shaft abutment |
|---|---|---|
| Da |
max. 83 mm
|
Diameter of housing abutment |
| ra |
max. 1 mm
|
Radius of fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
107 kN
|
| Basic static load rating | C0 |
108 kN
|
| Fatigue load limit | Pu |
12 kN
|
| Reference speed |
7 000 r/min
|
|
| Limiting speed |
9 500 r/min
|
|
| Limiting value | e |
0.24
|
| Calculation factor | Y1 |
2.8
|
| Calculation factor | Y2 |
4.2
|
| Calculation factor | Y0 |
2.8
|
| Range of section height at inner ring of assembled bearing | tKia |
5 µm
|
|---|---|---|
| Maximum run-out of inner ring side face to the bore | tSd |
8 µm
|
| Range of section height at outer ring of assembled bearing | tKea |
10 µm
|
| Perpendicularity of outer ring outside surface | tSD |
4.5 µm
|
| ISO tolerance class for geometrical tolerances |
P5
|
| Minimum initial clearance |
35 µm
|
| Maximum initial clearance |
55 µm
|
| Bore type |
Cylindrical
|
| d |
1.9685 in
|
Bore diameter |
|---|---|---|
| tΔdmp | -12 – 0 µm | Deviation limits of mid-range bore diameter |
| D |
3.5433 in
|
Outside diameter |
| tΔDmp | -15 – 0 µm | Deviation limits of mid-range outside diameter |
| B |
0.9055 in
|
Width |
| tΔBs | -60 – 0 µm | Deviation limits of ring width |
| d2 |
≈ 2.3622 in
|
Shoulder diameter of inner ring |
| D1 |
≈ 3.1102 in
|
Shoulder/recess diameter of outer ring |
| b |
0.2165 in
|
Width of lubrication groove |
| K |
0.1181 in
|
Diameter of lubrication hole |
| r1,2 |
min. 0.0433 in
|
Chamfer dimension |
|
Normal
|
ISO tolerance class for dimensions |
| da |
min. 2.2441 in
|
Diameter of shaft abutment |
|---|---|---|
| Da |
max. 3.2677 in
|
Diameter of housing abutment |
| ra |
max. 0.0394 in
|
Radius of fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
24 055 lbf
|
| Basic static load rating | C0 |
24 279 lbf
|
| Fatigue load limit | Pu |
2 698 lbf
|
| Reference speed |
7 000 r/min
|
|
| Limiting speed |
9 500 r/min
|
|
| Limiting value | e |
0.24
|
| Calculation factor | Y1 |
2.8
|
| Calculation factor | Y2 |
4.2
|
| Calculation factor | Y0 |
2.8
|
| Range of section height at inner ring of assembled bearing | tKia |
5 µm
|
|---|---|---|
| Maximum run-out of inner ring side face to the bore | tSd |
8 µm
|
| Range of section height at outer ring of assembled bearing | tKea |
10 µm
|
| Perpendicularity of outer ring outside surface | tSD |
4.5 µm
|
| ISO tolerance class for geometrical tolerances |
P5
|
| Minimum initial clearance |
0.0014 in
|
| Maximum initial clearance |
0.0022 in
|
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