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

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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 5900 RPM

Limiting Speed - Grease

 N/A 5100 RPM

Taper

 N/A 1:12

Precision

 N/A Special Precision

Configuration

 N/A Two

Oil Hole

 N/A w/o Oil Hole

Radial Internal Clearance

 N/A C1NA

Static Load Rating

 N/A 40000 lbf179000 N179.00 kN

Dynamic Load Rating

 N/A 26100 lbf116000 N116.00 kN

Enclosure

 N/A Open

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 3.1496 in80.000 mm

D

 N/A 4.9213 in125.000 mm

B

 N/A 1.3386 in34.000 mm

C

 N/A 1.3386 in34.000 mm

Ew

 N/A 4.4488 in113.000 mm

r

 N/A 0.0433 in1.100 mm

da min

 N/A 3.4055 in86.5 mm

db min

 N/A 3.5236 in89.500 mm

Da max

 N/A 4.4882 in114.000 mm

Db min

 N/A 4.4882 in114.000 mm

Db max

 N/A 4.6654 in118.500 mm

ras max

 N/A 0.0394 in1 mm