Item # NA4976, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series On NTN Bearing Corp. of America

Search Catalog



	All Categories Machined-Ring Needle Roller Bearings w/ Inner Ring


	Item # NA4976, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

Order Now

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		950 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		845000 lbf 3750000 N 3750.00 kN

Dynamic Load Rating		315000 lbf 1400000.0 N 1400.00 kN

Weight		162.260 lb 73.600 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		14.9606 in 380.000 mm

D		20.4724 in 520.000 mm

F		16.9291 in 430.000 mm

B		5.5118 in 140.000 mm

r		0.1575 in 4.000 mm

s		0.0787 in 2.000 mm

da min		15.5906 in 396.000 mm

Da max		19.8425 in 504.000 mm

ras max		0.1181 in 3 mm

Item # NA4976, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series