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NRT 325 B

NRT 325 B

sales@its-bearing.com

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Overview
Part NumberNRT 325 B
Characteristics
System of MeasurementMetric
Roller Bearing TypeCylindrical
For Load DirectionCombined
Dimensions
Bore Dia325 mm
Bore Dia Tolerance-0.023mm to 0
Outer Dia450 mm
Outer Dia Tolerance-0.023mm to 0
Width60 mm
Shoulder Diameter Inner Ring - Large Shoulder415 mm
Chamfer Dimension r2 (min.)0.6 mm
Height Tolerance-0.40mm to 0
Distance40 mm
Outer Ring (Housing Washer) Width20 mm
Outer Ring (Housing Washer) Chamfer Dimension r1 (min.)0.6 mm
Inner Ring (Shaft/Locating Washer) Hole Pitch Circle Diameter342 mm
Outer Ring (Housing Washer) Hole Pitch Circle Diameter430 mm
Inner Ring (Shaft/Locating Washer) Through Hole9.3 mm
Outer Ring (Housing Washer) Through Hole9.3 mm
Inner Ring (Shaft Washer) Sinkhole15 mm
Inner Ring (Shaft Washer) Sinkhole Depth8.2 mm
Material
Ring MaterialChrome Steel
Roller MaterialChrome Steel
Cage MaterialBrass
Performance
Basic Dynamic Load Rating - Axial Direction153 kN
Basic Dynamic Load Rating - Radial Direction134 kN
Basic Static Load Rating - Radial Direction450 kN
Attainable Speed For Grease Lubrication110 r/min
Attainable Speed For Oil-Air Lubrication220 r/min
Axial Preload12 kN
Axial Unloading Force26 kN
Axial Stiffness For Preload A (sets of two brgs back-to-back or face-to-face)28600000 kN/µm
Axial Stiffness For Preload B (sets of two brgs back-to-back or face-to-face)8900000 kN/µm
Frictional Moment45 N·m
Moment Stiffness427 kN·m/mrad
Temperature Range-30° to 110 °C
Properties
LubricationGrease, Oil
RoHSCompliant
REACHCompliant
Weight25 kg
NRT 325 B
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