Item # NNU4928K, Double Row Cylindrical Roller Bearing w/ Tapered Bore

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	Item # NNU4928K, Double Row Cylindrical Roller Bearing w/ Tapered 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		Tapered

Material		Hardened Alloy Steel

Cage Material		High Strength, 2 piece, Machined Brass

Limiting Speed - Oil		3600 RPM

Limiting Speed - Grease		3000 RPM

Taper		1:12

Precision		ISO Class 0

Tolerance		ISO Class 0 (RBEC 1)

Oil Hole		w/o Oil Hole

Radial Internal Clearance		CN

Static Load Rating		106000 lbf 470000 N 470.00 kN

Dynamic Load Rating		51000 lbf 227000 N 227.00 kN

Enclosure		Open

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

Dimensional Specifications

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

d		5.5118 in 140.000 mm

D		7.4803 in 190.000 mm

B		1.9685 in 50.000 mm

C		1.9685 in 50.000 mm

Fw		6.1417 in 156.000 mm

r		0.0591 in 1.500 mm

da min		5.8268 in 148.000 mm

db min		5.9843 in 152.000 mm

Da max		7.1654 in 182.000 mm

Db min		7.0866 in 180.000 mm

Db max		7.1654 in 182.000 mm

ras max		0.0591 in 1.500 mm

Item # NNU4928K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NNU