Hybrid single row deep groove ball bearings have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (Si3N4), which make the bearings electrically insulating. Deep groove ball bearings are the most widely used bearing type, especially in electric motors. The silicon nitride elements not only provide protection from electric current damage but also, when compared to same-sized bearings with steel rolling elements, provide enhanced bearing performance, extended bearing service life, higher speed capability, high wear-resistance, high bearing stiffness, reduced risk of smearing and false (brinelling, and less sensitivity to temperature gradients. These characteristics make them suitable for use in difficult conditions and contaminated environments.
| d |
35 mm
|
Bore diameter |
|---|---|---|
| D |
72 mm
|
Outside diameter |
| B |
17 mm
|
Width |
| d1 |
≈ 46.94 mm
|
Shoulder diameter inner ring |
| D1 |
≈ 59.95 mm
|
Shoulder diameter outer ring |
| r1,2 |
min. 1.1 mm
|
Chamfer dimension |
| da |
min. 42 mm
|
Abutment diameter shaft |
|---|---|---|
| Da |
max. 65 mm
|
Abutment diameter housing |
| ra |
max. 1 mm
|
Fillet radius |
| Basic dynamic load rating | C |
25.5 kN
|
|---|---|---|
| Basic static load rating | C0 |
15.3 kN
|
| Fatigue load limit | Pu |
0.475 kN
|
| Reference speed |
24 000 r/min
|
|
| Limiting speed |
15 000 r/min
|
|
| Calculation factor | kr |
0.025
|
| Calculation factor | f0 |
13.8
|
| Mass bearing |
0.29 kg
|
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