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BTW 45 CTN9/SP

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BTW 45 CTN9/SP

Double direction angular contact thrust ball bearing, super-precision, basic design
Double direction angular contact thrust ball bearings are designed to locate spindle shafts axially in both directions. These bearings are intended for mounting in combination with cylindrical roller bearings, and consist of two single row angular contact thrust ball bearings arranged back-to-back. The large number of balls enables these bearings to accommodate high axial loads in both directions and provides a high degree of system rigidity.

  • Accommodate high axial loads in both directions
  • Offer maximum load carrying capacity and maximum system rigidity
  • Available for shaft diameters from 35 to 200 mm
  • Available with either steel or ceramic balls
  • Separable

Description

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Dimensions - BTW 45 CTN9/SP

Dimensions

d

45 mm

Bore diameter
D

75 mm

Outside diameter
H

38 mm

Height
d1

62.5 mm

Shoulder diameter shaft washer (high shoulder)
2C

19 mm

Height of both housing washers
r1,2

min. 1 mm

Shaft washer chamfer radius
r3,4

min. 0.3 mm

Housing washer small chamfer radius

Abutment dimensions - BTW 45 CTN9/SP

Abutment dimensions

da

min. 56 mm

Abutment diameter shaft
Da

min. 69.9 mm

Abutment diameter shaft
Da

max. 71 mm

Abutment diameter housing
ra

max. 1 mm

Fillet radius
rb

max. 0.3 mm

Fillet radius

Calculation data

Basic dynamic load ratingC

22.1 kN

Basic static load ratingC0

54 kN

Fatigue load limitPu

2.6 kN

Attainable speed for grease lubrication

9 500 r/min

Attainable speed for oil-air lubrication

12 000 r/min

Contact angleα

60 °

Preload

390 N

Static axial stiffness

513 N/µm

Reference grease quantityGref

3.1 cm³

Mass

Mass bearing

0.53 kg

Tolerances and clearances

Bearing data

Principles of bearing selection and application

recently added Bearing

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