Item # NNU4972, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore

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	Item # NNU4972, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU

The rollers in the NN type bearing are guided by the ribs of the inner ring.

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

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Ordering Options		Contact NTN Customer Relations

Technical Specifications

Type		Cylindrical Roller Bearing

Bore Type		Cylindrical

Material		Hardened Alloy Steel

Cage Material		High Strength, 2 piece, Machined Brass

Limiting Speed - Oil		1300 RPM

Limiting Speed - Grease		1100 RPM

Precision		ISO Class 0

Configuration		Two

Tolerance		ISO Class 0 (RBEC 1)

Oil Hole		w/o Oil Hole

Radial Internal Clearance		CN

Static Load Rating		730000 lbf 3250000 N 3250.00 kN

Dynamic Load Rating		286000 lbf 1270000 N 1270.00 kN

Enclosure		Open

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

Dimensional Specifications

		Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU - Dimensions larger image

d		14.1732 in 360.000 mm

D		18.8976 in 480.000 mm

B		4.6457 in 118.000 mm

C		4.6457 in 118.000 mm

Fw		15.6693 in 398.000 mm

r		0.1181 in 3.000 mm

da min		14.6850 in 373.000 mm

db min		15.0787 in 383.000 mm

Da max		18.3858 in 467.000 mm

ras max		0.0984 in 2.500 mm

Item # NNU4972, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU