Item # QJ310MA, Four Point Ball Bearings On NTN Bearing Corp. of America

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	Item # QJ310MA, Four Point Ball Bearings

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

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Ordering Options		Find a Distributor Contact NTN Customer Support Specialist Order through NTN DOL (Authorized Distributors Only)

Technical Specifications

Type		Four-Point Contact Ball Bearing

Bore Type		Round

Material		High Carbon Chrome Steel

Cage Type		High Strength, 2 piece, Machined

Cage Material		Brass

Ball Material		Steel

Limiting Speed - Oil		14700 RPM

Limiting Speed - Grease		9400 RPM

Precision		Class 0

Configuration		One

Contact Angle		30 º

Radial Internal Clearance		CN

Static Load Rating		32500 lbf 145000 N 145.00 kN

Dynamic Load Rating		20700 lbf 92000 N 92.00 kN

Enclosure		Open

Operating Temperature Range		-40 to 250 ºF -40 to 120 ºC

Dimensional Specifications

		Four Point Ball Bearings - Dimensions larger image

d		1.9685 in 50.000 mm

D		4.3307 in 110.000 mm

B		1.0630 in 27.000 mm

r		0.0787 in 2.000 mm

a		1.8110 in 46.000 mm

da min		2.3622 in 60.000 mm

Da max		3.9370 in 100.000 mm

ras max		0.0787 in 2.000 mm

Item # QJ310MA, Four Point Ball Bearings