BT4-0021 G/HA1

Four-row tapered roller bearings

Four-row tapered roller bearings are capable of carrying combined radial and axial loads at low to medium speeds. They are only used in work roll equipment applications such as rolling mills. JOJI manufactures four-row tapered roller bearings of types TQO and TQI in many variants and with different characteristics.

  • High radial load carrying capacity
  • Capable of withstanding bi-directional axial loads
  • Saving of axial space for roll necks
  • Long service life

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Overview
Technical Parameters

Overview

Skim Through

Size

Inner Diameter206.375mm
Outer diameter282.575mm
Total width190.5mm
Inner ring width190.5mm
Outer ring width190.5mm
Contact angle18.75°

Performance

Basic dynamic load rating1400.0kN
Basic rated static load3350.0kN

Properties

Bearing parts Complete set of bearings
Number of columns 4
Locating features, bearing outer ring None
Hole type Cylindrical bore
Cage Steel plate
Arrangement of contact angles (double row bearing) Not applicable
Paired configuration Not available
Coating without
Sealing Without
Seal Type Not Applicable
Lubricant None
Relubrication function Without

Logistics

Net weight36.6kg
eClass Code 23-05-09-10

Technical Parameters

Technical Parameters

Size

d206.375mm Hole diameter
D282.575mm Outer diameter
B190.5mm Total width of bearing inner ring
T190.5mm Total width of bearing outer ring
d1 ≈221.0mm Shaft shoulder diameter
D1 ≈248.0mm Bearing housing shoulder size
r1,2 min.0.8mm Inner ring chamfer size
r3,4 min.3.3mm Outer ring radius (chamfer)

Data calculation

Basic dynamic load rating C1400.0kN
Basic rated static loadC03350.0kN
Fatigue Load LimitPu305.0kN
Radial Specific Load RatingCF340.0kN
Axial specific load ratingCFa85.2kN
Thrust coefficient K1.15
Limit value e0.5
Calculation coefficientY11.35
Calculation factorY22.0
Calculation factorY01.3

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