Item # NK21/20R, Machined-Ring Needle Roller Bearing w/o Inner Ring - RNA49.R, RNA59, RNA69.R, NK.R, MR Series On NTN Bearing Corp. of America

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	Item # NK21/20R, Machined-Ring Needle Roller Bearing w/o Inner Ring - RNA49.R, RNA59, RNA69.R, NK.R, MR 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

Roller Type		Needle

Configuration		One

Material		High Carbon Chrome Steel

Cage Material		Steel

Limiting Speed - Oil		19000 RPM

Limiting Speed - Grease		13000 RPM

Precision		ISO Class 0

Enclosure		Open

Static Load Rating		6100 lbf 27100 N 27.10 kN

Dynamic Load Rating		4100 lbf 18300 N 18.30 kN

Weight		0.077 lb 0.035 kg

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

Dimensional Specifications

		Machined-Ring Needle Roller Bearing w/o Inner Ring - RNA49.R, RNA59, RNA69.R, NK.R, MR Series - Dimensions larger image

Fw		0.8268 in 21.000 mm

Fw Tolerance		0.033/0.020 mm

D		1.1417 in 29.000 mm

C		0.7874 in 20.000 mm

r		0.0118 in 0.300 mm

Da max		1.0630 in 27.000 mm

ras max		0.0118 in 0.300 mm

Item # NK21/20R, Machined-Ring Needle Roller Bearing w/o Inner Ring - RNA49.R, RNA59, RNA69.R, NK.R, MR Series