Item # NN4938K, Double Row Cylindrical Roller Bearing w/ Tapered Bore

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	Item # NN4938K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN

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		2600 RPM

Limiting Speed - Grease		2200 RPM

Taper		1:12

Precision		ISO Class 0

Configuration		Two

Oil Hole		w/o Oil Hole

Radial Internal Clearance		CN

Static Load Rating		232000 lbf 1030000 N 1030.00 kN

Dynamic Load Rating		107000 lbf 475000 N 475.00 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 NN - Dimensions larger image

d		7.4803 in 190.000 mm

D		10.2362 in 260.000 mm

B		2.7165 in 69.000 mm

C		2.7165 in 69.000 mm

Ew		9.6063 in 244.000 mm

r		0.0787 in 2.000 mm

da min		7.8346 in 199.000 mm

db min		8.0709 in 205.000 mm

Da max		9.6850 in 246.000 mm

Db min		9.6850 in 246.000 mm

Db max		9.8819 in 251.000 mm

ras max		0.0787 in 2.000 mm

Item # NN4938K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN