BTW 45 CTN9/SP

Super-precision, basic design double direction angular contact thrust ball bearing

These double direction angular contact thrust ball bearings consist of two single row angular contact thrust ball bearings, arranged back-to-back.

They accommodate high axial loads in both directions and provide a high degree of system rigidity.

  • Accommodate axial loads in both directions
  • Maximum system rigidity
  • Separable

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)
D1
69.9 mm
Shoulder diameter housing washer (low shoulder)
2C
19 mm
Height of both housing washers
r1,2
min.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.mm
Fillet radius
rb
max.0.3 mm
Fillet radius

Calculation data

Basic dynamic load rating C
22.1 kN
Basic static load rating C0
54 kN
Fatigue load limit Pu
2.6 kN
Attainable speed for grease lubrication
9 500 r/min
Attainable speed for oil-air lubrication
12 000 r/min
Contact angle α
60 °
Ball diameter Dw
6.35 mm
Number of rolling element rows i
2
Number of balls (per bearing) z
23
Reference grease quantity Gref
3.1 cm³
Preload
390 N
Static axial stiffness
513 N/µm
Preload and stiffness
Axial stiffness for preload A (sets of two brgs back-to-back or face-to-face)
513 N/µm

Description

Properties

Axial load capability Double-direction
Number of rows 2
Locating feature, bearing outer ring Without
Design Basic (BTW series)
Housing washer type (double-row angular contact thrust ball bearings) Two-piece
Cage Non-metallic
Tolerance class SP
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature Without
Indicative carbon footprint for new product 1.9 kg CO2e

Logistics

Product net weight 0.532 kg
eClass code 23-05-10-02
UNSPSC code 31171531

(45X75X38) (BTW45CTN9SP)

Additional information

Weight 0.532 kg
Size (mm)

Colour