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 |
Tapered 1:12
|
| d |
65 mm
|
Bore diameter |
|---|---|---|
| tΔdmp | 0 – 0.03 mm | Deviation limits of mid-range bore diameter |
| tΔSL | 0 – 0.03 mm | Deviation limits of tapered slope |
| D |
120 mm
|
Outside diameter |
| tΔDmp | -0.015 – 0 mm | Deviation limits of mid-range outside diameter |
| B |
31 mm
|
Width |
| tΔBs | -0.06 – 0 mm | Deviation limits of ring width |
| d2 |
≈ 80.1 mm
|
Shoulder diameter of inner ring |
| D1 |
≈ 106 mm
|
Shoulder/recess diameter of outer ring |
| b |
6 mm
|
Width of lubrication groove |
| K |
3 mm
|
Diameter of lubrication hole |
| r1,2 |
min. 1.5 mm
|
Chamfer dimension |
|
Normal
|
ISO tolerance class for dimensions |
| Da |
max. 111 mm
|
Diameter of housing abutment |
|---|---|---|
| ra |
max. 1.5 mm
|
Radius of fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
198 kN
|
| Basic static load rating | C0 |
216 kN
|
| Fatigue load limit | Pu |
23.6 kN
|
| Reference speed |
5 000 r/min
|
|
| Limiting speed |
7 000 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 |
55 µm
|
| Maximum initial clearance |
75 µm
|
| Recommended tightening angle for lock nut | α |
115 °
|
|---|
| Bore type |
Tapered 1:12
|
| d |
2.5591 in
|
Bore diameter |
|---|---|---|
| tΔdmp | 0 – 30 µm | Deviation limits of mid-range bore diameter |
| tΔSL | 0 – 30 µm | Deviation limits of tapered slope |
| D |
4.7244 in
|
Outside diameter |
| tΔDmp | -15 – 0 µm | Deviation limits of mid-range outside diameter |
| B |
1.2205 in
|
Width |
| tΔBs | -60 – 0 µm | Deviation limits of ring width |
| d2 |
≈ 3.1535 in
|
Shoulder diameter of inner ring |
| D1 |
≈ 4.1732 in
|
Shoulder/recess diameter of outer ring |
| b |
0.2362 in
|
Width of lubrication groove |
| K |
0.1181 in
|
Diameter of lubrication hole |
| r1,2 |
min. 0.0591 in
|
Chamfer dimension |
|
Normal
|
ISO tolerance class for dimensions |
| Da |
max. 4.3701 in
|
Diameter of housing abutment |
|---|---|---|
| ra |
max. 0.0591 in
|
Radius of fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
44 512 lbf
|
| Basic static load rating | C0 |
48 559 lbf
|
| Fatigue load limit | Pu |
5 305 lbf
|
| Reference speed |
5 000 r/min
|
|
| Limiting speed |
7 000 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 |
0.0022 in
|
| Maximum initial clearance |
0.003 in
|
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