315976 B

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 Diameter280.0mm
Outer Diameter470.0mm
Width200.0mm

Performance

Basic rated dynamic load2700.0kN
Basic rated static load5100.0kN
Reference speed1000.0r/min
Limiting speed1500.0r/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 C3
Tolerance class Normal
Coating Without
Sealing Without
Lubrication without
Relubrication with

Logistics

Net weight146.0kg
UNSPSC Code 31171505

Technical Parameters

Technical Parameters

Size

d280.0mm Hole diameter
D470.0mm Outer diameter
B200.0mm Total bearing width
D1 ≈411.0mm Outer ring flange diameter
F329.0mm Inner ring raceway diameter
b13.9mm Ring groove width
K7.5mm Lubrication hole diameter
r1,2 min.3.0mm Outer ring chamfer size
r3,4 min.5.0mm Inner ring chamfer size
s4.7mm Allowable axial displacement of the bearing ring relative to other rings in normal position", "qualifier" : "max.

Shoulder size

da min.293.0mm Spacer shoulder diameter
da max.323.0mm max.323.0mm Spacer Shoulder Diameter
db min.333.0mm Shaft shoulder diameter
Da max.450.0mm Spacer and housing shoulder diameter
ra max.2.5mm Chamfering radius
rb max.4.0mm Chamfering radius

Data calculation

Basic dynamic load rating C2700.0kN
Basic rated static loadC05100.0kN
Fatigue Load LimitPu455.0kN
Reference speed1000.0r/min
Limit speed1500.0r/min
Calculation coefficientkr0.36

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