Item # NA4972, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series On NTN Bearing Corp. of America

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	Item # NA4972, 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		1000 RPM

Limiting Speed - Grease		650 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		720000 lbf 3200000 N 3200.00 kN

Dynamic Load Rating		270000 lbf 1200000 N 1200.00 kN

Weight		108.026 lb 49.000 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		14.1732 in 360.000 mm

D		18.8976 in 480.000 mm

F		15.7480 in 400.000 mm

B		4.6457 in 118.000 mm

r		0.1181 in 3.000 mm

s		0.0787 in 2.000 mm

da min		14.6850 in 373.000 mm

Da max		18.3858 in 467.000 mm

ras max		0.0984 in 2.500 mm

Item # NA4972, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series