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Abstract
An extensive lest program was conducted to evaluate the scuffing resistance of grease-lubricated tapered roller bearings. There were three main program objectives.
| 1. | Provide validated and meaningful guidelines to designers on the speed capabilities of tapered roller bearings made with today's precision manufacturing practices. | ||||
| 2. | Evaluate the effects of extreme-pressure additives on the scuffing resistance of these bearings. | ||||
| 3. | Study the effects of extreme design conditions, which normally do not occur in practice, affecting the rib-roller and contact conditions on scuffing performance. | ||||
Current grease-lubricated tapered roller bearings are found to perform, without the incidence of scuffing, at rib speeds of 15 to 20 m/sec. This is much higher than the values of 5 to 10 ml sec recommended. These lower values are based on the field knowledge and experience in the 1960s.
Extreme-pressure (EP) additives provide no significant improvement in the speed capabilities of grease-lubricated tapered roller bearings.
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in Lahalna, Hawaii, October 16–20, 1994
Notes
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in Lahalna, Hawaii, October 16–20, 1994