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 | 11.746 lb CO2e |
| Dimension series |
3EC
|
| d |
65 mm
|
Bore diameter |
|---|---|---|
| D |
120 mm
|
Outside diameter |
| T |
32.75 mm
|
Total width |
| d1 |
≈ 90.3 mm
|
Shoulder diameter of inner ring |
| B |
31 mm
|
Width of inner ring |
| C |
27 mm
|
Width of outer ring |
| r1,2 |
min. 2 mm
|
Chamfer dimension of inner ring |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension of outer ring |
| a |
26.55 mm
|
Distance side face to pressure point |
| da |
max. 76 mm
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 75.5 mm
|
Diameter of shaft abutment |
| Da |
min. 104 mm
|
Diameter of housing abutment |
| Da |
max. 111.5 mm
|
Diameter of housing abutment |
| Db |
min. 115 mm
|
Diameter of housing abutment |
| Ca |
min. 4 mm
|
Minimum width of space required in housing on large side face |
| Cb |
min. 5.5 mm
|
Minimum width of space required in housing on small side face |
| ra |
max. 2 mm
|
Radius of shaft fillet |
| rb |
max. 1.5 mm
|
Radius of housing fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
186 kN
|
| Basic static load rating | C0 |
193 kN
|
| Fatigue load limit | Pu |
22.8 kN
|
| Reference speed |
4 500 r/min
|
|
| Limiting speed |
5 600 r/min
|
|
| Limiting value | e |
0.4
|
| Calculation factor | Y |
1.5
|
| Calculation factor | Y0 |
0.8
|
| Dimension series |
3EC
|
| d |
2.5591 in
|
Bore diameter |
|---|---|---|
| D |
4.7244 in
|
Outside diameter |
| T |
1.2894 in
|
Total width |
| d1 |
≈ 3.5551 in
|
Shoulder diameter of inner ring |
| B |
1.2205 in
|
Width of inner ring |
| C |
1.063 in
|
Width of outer ring |
| r1,2 |
min. 0.0787 in
|
Chamfer dimension of inner ring |
| r3,4 |
min. 0.0591 in
|
Chamfer dimension of outer ring |
| a |
1.0453 in
|
Distance side face to pressure point |
| da |
max. 2.9921 in
|
Diameter of shaft abutment |
|---|---|---|
| db |
min. 2.9724 in
|
Diameter of shaft abutment |
| Da |
min. 4.0945 in
|
Diameter of housing abutment |
| Da |
max. 4.3898 in
|
Diameter of housing abutment |
| Db |
min. 4.5276 in
|
Diameter of housing abutment |
| Ca |
min. 0.1575 in
|
Minimum width of space required in housing on large side face |
| Cb |
min. 0.2165 in
|
Minimum width of space required in housing on small side face |
| ra |
max. 0.0787 in
|
Radius of shaft fillet |
| rb |
max. 0.0591 in
|
Radius of housing fillet |
| SKF performance class |
SKF Explorer
|
|
| Basic dynamic load rating | C |
41 814 lbf
|
| Basic static load rating | C0 |
43 388 lbf
|
| Fatigue load limit | Pu |
5 126 lbf
|
| Reference speed |
4 500 r/min
|
|
| Limiting speed |
5 600 r/min
|
|
| Limiting value | e |
0.4
|
| Calculation factor | Y |
1.5
|
| Calculation factor | Y0 |
0.8
|
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