IBC NN3034 Cylindrical Roller Bearing 170 × 260 × 67 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: 170 mm
Outer Ø: 260 mm
Width: 67 mm

Overview

IBC NN3034 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	453000 N	Basic dynamic load rating, radial
C_0r	802000 N	Basic static load rating, radial
C_u	84420 N	Fatigue limit load
n_G	3200 1/min	Limiting speed (grease)
n_O	3800 1/min	Limiting speed (oil-air)
≈m	12.35 kg	Weight
S_r	3800 N/μm	Radial stiffness

Symbol	Value	Description
d	170 mm	Bore diameter
D	260 mm	Outside diameter
B	67 mm	Width
E/F	236 mm	Race diameter
s	4.5 mm	Permissible axial displacement
b	8.3 mm	Lubrication groove width
K	4.5 mm	Lubrication hole diameter
d₁	203.7 mm	Shoulder diameter, inner ring
r_min	2.1 mm	Minimum chamfer dimension

Symbol	Value	Description
d_{a min}	181 mm	Min. shoulder diameter for mounting, inner ring
D_{a min}	240 mm	Min. shoulder diameter for mounting, housing
D_{a max}	249 mm	Max. shoulder diameter for mounting, housing
r_max	2.1 mm	Max. fillet radius

Code	Description
100Cr6	Roller material
Double row high precision cylindrical roller bearing (NN)	Product type

datasheet pdf download

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