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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 Cylindrical

Material

N/A Hardened Alloy Steel

Cage Material

N/A High Strength, 2 piece, Machined Brass

Limiting Speed - Oil

N/A 1100 RPM

Limiting Speed - Grease

N/A 900 RPM

Precision

N/A ISO Class 0

Configuration

N/A Two

Tolerance

N/A ISO Class 0 (RBEC 1)

Oil Hole

N/A w/o Oil Hole

Radial Internal Clearance

N/A CN

Static Load Rating

N/A 1010000 lbf4500000 N4500.00 kN

Dynamic Load Rating

N/A 390000 lbf1740000 N1740.00 kN

Enclosure

N/A Open

Weight

N/A 202.825 lb92.000 kg

Operating Temperature Range

N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU - Dimensions

d

N/A 16.5354 in420.000 mm

D

N/A 22.0472 in560.000 mm

B

N/A 5.5118 in140.000 mm

C

N/A 5.5118 in140.000 mm

Fw

N/A 18.3071 in465.000 mm

r

N/A 0.1575 in4.000 mm

da min

N/A 17.1654 in436.000 mm

db min

N/A 17.6378 in448.000 mm

Da max

N/A 21.4173 in544.000 mm

ras max

N/A 0.1181 in3 mm