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

Technical Specifications

Type

N/A Cylindrical Roller Bearing

Bore Type

N/A Tapered

Material

N/A Hardened Alloy Steel

Cage Material

N/A High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

N/A 4500 rpm

Limiting Speed - Grease

N/A 3800 rpm

Taper

N/A 1:12

Precision

N/A ISO Class 5

Configuration

N/A Two

Oil Hole

N/A w/o Oil Hole

Radial Internal Clearance

N/A C1NA

Static Load Rating

N/A 72000 lbf320000 N320.00 kN

Dynamic Load Rating

N/A 44500 lbf198000 N198.00 kN

Enclosure

N/A Open

Weight

N/A 6.131 lb2.781 kg

Operating Temperature Range

N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN - Dimensions

d

N/A 4.1339 in105.000 mm

D

N/A 6.2992 in160 mm

B

N/A 1.6142 in41 mm

C

N/A 1.6142 in41 mm

Ew

N/A 5.7480 in146.000 mm

r

N/A 0.0787 in2.000 mm

da min

N/A 4.4882 in114.000 mm

db min

N/A 4.6063 in117.000 mm

Da max

N/A 5.8268 in148.000 mm

Db min

N/A 5.8268 in148.000 mm

Db max

N/A 5.9449 in151.000 mm

ras max

N/A 0.0787 in2 mm