IBC N1964 Cylindrical Roller Bearing 320 × 440 × 56 mm

Cylindrical Roller Bearing

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EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Cylindrical Roller Bearing
Bore: 320 mm
Outer Ø: 440 mm
Width: 56 mm

Overview

IBC N1964 Cylindrical Roller Bearing is designed for high radial load capacity through line contact between rollers and raceways. It is suitable for rigid, heavy-duty applications such as motors, gearboxes, rolling mills, and machine tools, with N, NU, NJ, and NUP designs offering different axial locating functions.

Cylindrical rollers and a cage are arranged between inner and outer ring raceways. Depending on flange configuration, the bearing can be separable and may support axial load in one or both directions.

Key features

High radial load capacity
Rigid performance for high-speed operation
Separable design for easier mounting
Axial locating capability by design variant

Typical applications

Industrial electric motors
Gearboxes and reducers
Machine tool spindle support positions
Rolling mills, paper machines, and heavy machinery

Selection guidance

Choose the N, NU, NJ, or NUP design by load direction, axial locating requirement, cage material, internal clearance, and lubrication condition.

Symbol	Value	Description
Cr	622000 N	Basic dynamic load rating, radial
C_0r	1105000 N	Basic static load rating, radial
C_u	88400 N	Fatigue limit load
n_G	1900 1/min	Limiting speed (grease)
n_O	2100 1/min	Limiting speed (oil-air)
≈m	25 kg	Weight
S_r	3290 N/μm	Radial stiffness

Symbol	Value	Description
d	320 mm	Bore diameter
D	440 mm	Outside diameter
B	56 mm	Width
d_pi	402.4 mm	Injection diameter (oil-air lubrication)
E	410 mm	Race diameter
s	6.5 mm	Permissible axial displacement
d₁	364.8 mm	Shoulder diameter, inner ring
r_{1,2 min}	3 mm	Minimum chamfer dimension
r_{3,4 min}	2.1 mm	Minimum chamfer dimension, side face

Symbol	Value	Description
d_{a min}	338.6 mm	Min. shoulder diameter for mounting, inner ring
d_{a max}	355.2 mm	Max. shoulder diameter for mounting, inner ring
D_{a min}	422.4 mm	Min. shoulder diameter for mounting, housing
D_{a max}	426.8 mm	Max. shoulder diameter for mounting, housing
r_{a max}	3 mm	Max. fillet radius
r_{b max}	2.1 mm	Max. fillet radius, side face

Code	Description
100Cr6	Roller material
Single row high precision cylindrical roller bearing	Product type

datasheet pdf download

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