Item # QJ311, Four Point Ball Bearings On NTN Bearing Corp. of America

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	Item # QJ311, 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		6100 RPM

Limiting Speed - Grease		4600 RPM

Precision		Class 0

Configuration		One

Contact Angle		30 º

Radial Internal Clearance		CN

Static Load Rating		38000 lbf 170000 N 170.00 kN

Dynamic Load Rating		23800 lbf 106000 N 106.00 kN

Enclosure		Open

Weight		8.633 lb 3.916 kg

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

Dimensional Specifications

		Four Point Ball Bearings - Dimensions larger image

d		2.1654 in 55.000 mm

D		4.7244 in 120.000 mm

B		1.1417 in 29.000 mm

r		0.0787 in 2.000 mm

a		1.9882 in 50.500 mm

da min		2.5591 in 65.000 mm

Da max		4.3307 in 110.000 mm

ras max		0.0787 in 2.000 mm

Item # QJ311, Four Point Ball Bearings