Item # QJ221, Four Point Ball Bearings On NTN Bearing Corp. of America

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	Item # QJ221, 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		3600 RPM

Limiting Speed - Grease		2700 RPM

Precision		Class 0

Configuration		One

Contact Angle		30 º

Radial Internal Clearance		CN

Static Load Rating		90000 lbf 400000 N 400.00 kN

Dynamic Load Rating		44500 lbf 197000 N 197.00 kN

Enclosure		Open

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

Dimensional Specifications

		Four Point Ball Bearings - Dimensions larger image

d		4.1339 in 105.000 mm

D		7.4803 in 190.000 mm

B		1.4173 in 36.000 mm

r		0.0827 in 2.100 mm

a		3.3465 in 85.000 mm

da min		4.6063 in 117.000 mm

Da max		7.0079 in 178.000 mm

ras max		0.0787 in 2.000 mm

Item # QJ221, Four Point Ball Bearings