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20 mm ID OAV ® Roller Air Bearing

Performance Note: Load, stiffness, flow rate, and moment values are based on testing at 60 PSI supply pressure. Actual performance may vary depending on shaft quality, mounting method, air supply stability, and application conditions.


Title

Specification

Size 

20 mm ID 

Part Number 

OAVRL20M 

Housing Material/Finish 

7075 Aircraft Quality Aluminum/Mil Spec Hard Anodize 

Side Material/Finish 

7075 Aircraft Quality Aluminum/Mil Spec Hard Anodize 

Porous Material 

Carbon 

Input Pressure  

20 – 100 PSI (0.14 – 0.69 MPa)

Pressure Port THreads 

M5 x 0.8 

Lifetime 

Infinite 

Radial Load Max 

100.5 N (22.6 lbs) 

Axial Load Max 

378.1 N (85.0 lbs) 

Standard Total Indicated Runout (TIR) 

.0002 in - .0005 in (5 µm - 13 µm)

Ultra-Precision Total Indicated Runout (TIR)

± 9 millionths in (0.25 µm)

Axial and Radial Error Motion 

.9 μin/(0.023 µm) 

Bearing Inside Diameter (ID) 

20 mm + .01/-.00 

Bearing Outside Diameter (OD) 

70 mm + .00/-.01 

Bearing Width  

31.8 mm 

Weight 

.58 lb 

Shaft Diameter  

20 mm 

Housing Bore size Light Press Fit Method 

69.98 mm + .02/-.00 

Flow rate 

15 SCFH 


recommended with

stainless steel shaft

Shaft

Part # OAV20MMSHAFT

Our standard shafts have a surface finish better than 16 RMS and .0007 tolerance.

Roller air bearing mounting block

Mounting Block

Part # MB20RL

Aluminum Mounting Blocks for imperial and metric frictionless air bushings. Made from aircraft quality aluminum and anodized with Mil spec. for ultimate quality.

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