Single row tapered roller bearings are designed to accommodate combined radial and axial loads and provide low friction during operation. The inner ring, with rollers and cage, can be mounted separately from the outer ring. These separable and interchangeable components facilitate mounting, dismounting and maintenance. By mounting one single row tapered roller bearing against another and applying a preload, a rigid bearing application can be achieved.
| Bearing part | Complete bearing |
| Number of rows | 1 |
| Locating feature, bearing outer ring | Without |
| Bore type | Cylindrical |
| Cage | Sheet metal |
| Arrangement of contact angle (double-row bearing) | Not applicable |
| Matched arrangement | No |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Unit system | Metric |
| Indicative carbon footprint for new product | 7.38 kg CO2e |
| Dimension series |
3EC
|
| d |
80 mm
|
Bore diameter |
|---|---|---|
| D |
140 mm
|
Outside diameter |
| T |
35.25 mm
|
Total width |
| d1 |
≈ 106.1 mm
|
Shoulder diameter of inner ring |
| B |
33 mm
|
Width of inner ring |
| C |
28 mm
|
Width of outer ring |
| r1,2 |
min. 2.5 mm
|
Chamfer dimension of inner ring |
| r3,4 |
min. 2 mm
|
Chamfer dimension of outer ring |
| a |
30.05 mm
|
Distance side face to pressure point |
| da |
max. 91 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 92 mm
|
Diameter of shaft abutment |
| Da |
min. 122 mm
|
Diameter of housing abutment |
| Da |
max. 130 mm
|
Diameter of housing abutment |
| Db |
min. 134 mm
|
Diameter of housing abutment |
| Ca |
min. 5 mm
|
Minimum width of space required in housing on large side face |
| Cb |
min. 7 mm
|
Minimum width of space required in housing on small side face |
| ra |
max. 2.5 mm
|
Radius of shaft fillet |
| rb |
max. 2 mm
|
Radius of housing fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
228 kN
|
| Basic static load rating | C0 |
245 kN
|
| Fatigue load limit | Pu |
28.5 kN
|
| Reference speed |
3 800 r/min
|
|
| Limiting speed |
4 500 r/min
|
|
| Limiting value | e |
0.43
|
| Calculation factor | Y |
1.4
|
| Calculation factor | Y0 |
0.8
|
| Dimension series |
3EC
|
| d |
3.1496 in
|
Bore diameter |
|---|---|---|
| D |
5.5118 in
|
Outside diameter |
| T |
1.3878 in
|
Total width |
| d1 |
≈ 4.1772 in
|
Shoulder diameter of inner ring |
| B |
1.2992 in
|
Width of inner ring |
| C |
1.1024 in
|
Width of outer ring |
| r1,2 |
min. 0.0984 in
|
Chamfer dimension of inner ring |
| r3,4 |
min. 0.0787 in
|
Chamfer dimension of outer ring |
| a |
1.1831 in
|
Distance side face to pressure point |
| da |
max. 3.5827 in
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 3.622 in
|
Diameter of shaft abutment |
| Da |
min. 4.8031 in
|
Diameter of housing abutment |
| Da |
max. 5.1181 in
|
Diameter of housing abutment |
| Db |
min. 5.2756 in
|
Diameter of housing abutment |
| Ca |
min. 0.1969 in
|
Minimum width of space required in housing on large side face |
| Cb |
min. 0.2756 in
|
Minimum width of space required in housing on small side face |
| ra |
max. 0.0984 in
|
Radius of shaft fillet |
| rb |
max. 0.0787 in
|
Radius of housing fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
51 256 lbf
|
| Basic static load rating | C0 |
55 078 lbf
|
| Fatigue load limit | Pu |
6 407 lbf
|
| Reference speed |
3 800 r/min
|
|
| Limiting speed |
4 500 r/min
|
|
| Limiting value | e |
0.43
|
| Calculation factor | Y |
1.4
|
| Calculation factor | Y0 |
0.8
|
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