NNU 4168 M/W33

Double row cylindrical roller bearings

Double Row Cylindrical Roller Bearings are designed for applications with high to very heavy radial loads and medium to high speeds. The JOJI product range comprises a wide range of designs and types, such as standard and full complement rollers as well as pre-filled grease and sealed bearings. Depending on the construction of the inner and outer rings, the bearings are available in locating and non-locating designs.

  • High or very high radial load capacity
  • Very low friction
  • Long service life

+86 13817962999

Overview
Technical Parameters

Overview

Skim Through

Size

Inner Diameter340.0mm
Outer Diameter580.0mm
Width243.0mm

Performance

Basic rated dynamic load4020.0kN
Basic rated static load7500.0kN
Reference speed950.0r/min
Limiting speed1200.0r/min

Properties

Bearing parts Complete set of bearings
Axial displacement capacity In both directions
Number of columns 2
Locating features, bearing outer ring None
Hole type Cylindrical hole
Number of flanges, outer ring 3
Number of flanges, inner ring 0
Loop Flanges no
Radial clearance CN
Coating without
Sealing Without
Lubricant without
Relubrication with

Logistics

Net weight261.0kg
UNSPSC Code 31171505

Technical Parameters

Technical Parameters

Size

d340.0mm Hole diameter
D580.0mm Outer diameter
B243.0mm Total bearing width
D1 ≈510.0mm Outer ring flange diameter
F402.0mm Inner ring raceway diameter
b16.7mm Ring groove width
K9.0mm Lubrication hole diameter
r1,2 min.5.0mm Outer ring chamfer size
r3,4 min.5.0mm Inner ring chamfer size
s10.0mm Allowable axial displacement of the bearing ring relative to other rings in normal position", "qualifier" : "max.

Shoulder size

da min.360.0mm Spacer shoulder diameter
max.392.0mm max.392.0mm Spacer shoulder diameter
db min.407.0mm Shaft shoulder diameter
Da max.560.0mm Spacer and housing shoulder diameter
ra max.4.0mm Chamfering radius
rb max.4.0mm Chamfering radius

Data calculation

Basic dynamic load rating C4020.0kN
Basic rated static loadC07500.0kN
Fatigue Load LimitPu620.0kN
Reference speed950.0r/min
Limit speed1200.0r/min
Calculation coefficientkr0.35

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