Item # NNU4996K, Double Row Cylindrical Roller Bearing w/ Tapered Bore

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	Item # NNU4996K, 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		910 RPM

Limiting Speed - Grease		770 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		1330000 lbf 5900000 N 5900.00 kN

Dynamic Load Rating		515000 lbf 2280000 N 2280.00 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		18.8976 in 480.000 mm

D		25.5906 in 650.000 mm

B		6.6929 in 170.000 mm

C		6.6929 in 170.000 mm

Fw		21.0236 in 534.000 mm

r		0.1969 in 5.000 mm

da min		19.6850 in 500.000 mm

db min		20.2362 in 514.000 mm

Da max		24.8031 in 630.000 mm

ras max		0.1575 in 4.000 mm

Item # NNU4996K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NNU