Item # NNU4930K, Double Row Cylindrical Roller Bearing w/ Tapered Bore

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	Item # NNU4930K, 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		3300 RPM

Limiting Speed - Grease		2800 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		155000 lbf 690000 N 690.00 kN

Dynamic Load Rating		77500 lbf 345000 N 345.00 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		5.9055 in 150.000 mm

D		8.2677 in 210.000 mm

B		2.3622 in 60.000 mm

C		2.3622 in 60.000 mm

Fw		6.6339 in 168.500 mm

r		0.0787 in 2.000 mm

da min		6.2598 in 159.000 mm

db min		6.4567 in 164.000 mm

Da max		7.9134 in 201.000 mm

Db min		7.8150 in 198.500 mm

Db max		7.9134 in 201.000 mm

ras max		0.0787 in 2.000 mm

Item # NNU4930K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NNU