BTM 120 ATN9/P4CDBA

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

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

They accommodate axial loads in both directions and offer maximum speed capability. Compared to bearings in the basic design, BTW series, they have a 25% lower bearing height.

  • Accommodate axial loads in both directions
  • Maximum speed capability
  • 30° contact angle for higher speeds or 40° contact angle for higher degree of axial rigidty
  • Suitable for compact arrangements

Dimensions

d
120 mm
 Bore diameter
D
180 mm
 Outside diameter
H
54 mm
 Bearing height
d1
147.7 mm
 Shaft washer shoulder diameter (high shoulder)
D1
165 mm
 Housing washer shoulder diameter (low shoulder)
r1,2
min.2 mm
 Shaft washer chamfer radius
r3,4
min.1 mm
 Housing washer small chamfer radius
Abutment dimensions - BTM 120 ATN9/P4CDBA

Abutment dimensions

da
min.129 mm
 Shaft abutment diameter
Da
max.175 mm
 Housing abutment diameter
ra
max.2 mm
 Fillet radius
rb
max.1 mm
 Fillet radius
dn
144.1 mm
 Oil nozzle position

Calculation data

Basic dynamic load rating C
58 500 N
Basic static load rating C0
146 000 N
Fatigue load limit Pu
5 000 N
Attainable speed for grease lubrication
5 200 r/min
Attainable speed for oil-air lubrication
6 700 r/min
Contact angle α
30 °
Ball diameter Dw
12.7 mm
Number of rows i
2
Number of balls (per bearing) z
31
Reference grease quantity, set Gref
40 cm³
Preload and stiffness
Preload
600 N
Axial stiffness
377 N/µm
Add to Enquiry
SKU: BTM 120 ATN9/P4CDBA-SKF Categories: , , , ,
SKF

Description

Properties

Axial load capability Double-direction
Number of rows 2
Locating feature, bearing outer ring Without
Design High-speed (BTM series)
Housing washer type (double-row angular contact thrust ball bearings) Two-piece
Cage Non-metallic
Tolerance class P4C
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature Without
Indicative carbon footprint for new product 16.3 kg CO2e

Logistics

Product net weight 4.53 kg
eClass code 23-05-10-02
UNSPSC code 31171531

(120X180X54) (BTM120ATN9P4CDBA) (BTM120AP4CDBA)

Additional information

Weight 4.53 kg
Size (mm)

Colour

Related products