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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 2300 RPM

Limiting Speed - Grease

 N/A 1900 RPM

Taper

 N/A 1:12

Precision

 N/A ISO Class 4

Configuration

 N/A Two

Oil Hole

 N/A w/o Oil Hole

Radial Internal Clearance

 N/A C1NA

Static Load Rating

 N/A 263000 lbf1170000 N1170.00 kN

Dynamic Load Rating

 N/A 147000 lbf655000 N655.00 kN

Enclosure

 N/A Open

Weight

 N/A 48.943 lb22.200 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 7.8740 in200.000 mm

D

 N/A 12.2047 in310.000 mm

B

 N/A 3.2283 in82.000 mm

C

 N/A 3.2283 in82.000 mm

Ew

 N/A 11.1024 in282.000 mm

r

 N/A 0.0827 in2.100 mm

da min

 N/A 8.3071 in211.000 mm

db min

 N/A 8.5827 in218.000 mm

Da max

 N/A 11.2205 in285.000 mm

Db min

 N/A 11.2205 in285.000 mm

Db max

 N/A 11.7717 in299.000 mm

ras max

 N/A 0.0787 in2.000 mm