A1 Deeco Standard Bearing Grooves

tables for standard bearing grooves

Plane Bearings Condition	Recommended Limitations
Surface Speed	70 fpm or over
Unit Load	3,000 psi or less
Lubrication	High Speeds - Over 1200 fpm: SAE 10 High Loads - Over 250 psi: SAE 30
Shaft Hardness	Rc20 min. High Speeds (low loads): Rc25 Low Speeds (high loads): Rc35
Shaft Finish	32 RMS or better

With Oil Film Lubrication, grooves are required when bearing's length to diameter ratio is greater than 1.

Typical Operating Range for Grease Lubrication

Plane Bearings Condition	Recommended Limitations
Surface Speed	Below 70 fpm
Unit Load	Up to 8,600 psi
Lubrication	Low Loads - Over 3000 psi: SAE 40 High Loads - Over 3000 psi: 90-EP
Shaft Hardness	Rc20 min. Low Loads: Rc25 High Loads: Rc35 or higher
Shaft Finish	20 to 63 RMS max

With Grease Film Lubrication, grooves are required when bearing's length to diameter ratio is greater than 1.5. two popular designs are described:

Press Fit	Clearance
Generally a .001 minimum interface fitper inch of diameter is adequate at room temperature.	If exceptionally high speeds or loads are invloved, increase the clearance allowance to the next size.