Item # NA4980, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series On NTN Bearing Corp. of America

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	Item # NA4980, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series

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		Needle Roller Bearing

Bore Type		Round

Material		High Carbon Chrome Steel

Cage Material		Steel

Limiting Speed - Oil		900 RPM

Limiting Speed - Grease		600 RPM

Precision		ISO Class 0

Configuration		One

Enclosure		Open

Bearing Design		w/ Inner Ring

Oil Hole		w/ Oil Hole

Radial Internal Clearance		CN

Static Load Rating		900000 lbf 4000000 N 4000.00 kN

Dynamic Load Rating		325000 lbf 1450000 N 1450.00 kN

Weight		168.874 lb 76.600 kg

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

Dimensional Specifications

		Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series - Dimensions larger image

d		15.7480 in 400.000 mm

D		21.2598 in 540.000 mm

F		17.7165 in 450.000 mm

B		5.5118 in 140.000 mm

r		0.1575 in 4.000 mm

s		0.0984 in 2.500 mm

da min		16.3780 in 416.000 mm

Da max		20.6299 in 524.000 mm

ras max		0.1181 in 3 mm

Item # NA4980, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series