7020 CD/P4AQBCA

Matched set of four super-precision, high-capacity, D design, single row angular contact ball bearings

These sets of four matched super-precision angular contact ball bearings are available as universally matchable bearings or in preconfigured arrangements.

Sets of four bearings arranged in tandem need to be mounted against a single bearing, or a set of bearings in tandem, to achieve the desired preload. All the other arrangements are available in different preload classes and correct mounting results in preload within a predetermined range, without the need for shims or similar devices. The bore and outside diameters of the bearings are matched to within a maximum of one-third of the permitted diameter tolerance, to provide better load distribution than single universally matchable bearings.

  • Very high running accuracy
  • High axial and radial stiffness
  • High axial and radial load carrying capacity
Dimensions - 7020 CD/P4AQBCA

Dimensions

d
100 mm
Bore diameter
D
150 mm
Outside diameter
B
96 mm
Width
d1
115.4 mm
Shoulder diameter of inner ring (large side face)
r1,2
min.1.5 mm
Chamfer dimension
r3,4
min.mm
Chamfer dimension
Abutment dimensions - 7020 CD/P4AQBCAAbutment dimensions - 7020 CD/P4AQBCA

Abutment dimensions

da
min.107 mm
Diameter of shaft abutment
Db
max.146 mm
Diameter of housing abutment
ra
max.1.5 mm
Radius of fillet
rb
max.mm
Radius of fillet
dn
118.7 mm
Position of oil nozzle

Calculation data

Basic dynamic load rating C
221 kN
Basic static load rating C0
340 kN
Fatigue load limit Pu
12.9 kN
Attainable speed for grease lubrication
To be calculated: Single bearing (8500) x speed reduction factor (see table below)
Attainable speed for oil-air lubrication
To be calculated: Single bearing (14000) x speed reduction factor (see table below)
Contact angle α
15 °
Ball diameter Dw
15.875 mm
Number of rows i
4
Number of balls (per bearing) z
22
Reference grease quantity (per bearing) Gref
16.2 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload G
620 N
Axial stiffness
224 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.2
Correction factor dependent on contact angle f1
1
Correction factor, preload class A f2A
1
Correction factor for hybrid bearings fHC
1

Description

Properties

Contact type Normal contact (two-point contact)
Number of rows 4
Ring type One-piece inner and outer rings
Design High-capacity D
Universal matching bearing No
Matched arrangement <<>>
Number of bearings in matched set 4
Matched condition (axial clearance/ preload) Extra light preload
Tolerance class P4A
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Indicative carbon footprint for new product 17.9 kg CO2e

Logistics

Product net weight 4.97 kg
eClass code 23-05-08-04
UNSPSC code 31171531
Universal matching bearing(s)
No

Aftermarket replacement

Matched set of two super-precision, high-capacity, D design, single row angular contact ball bearings 2 x 7020 CD/P4ADGA
Super-precision, high-capacity, universally matchable single row angular contact ball bearing 4 x 7020 CDGA/P4A
Verify quantity of bearing rows

(100X150X96) (7020CDP4AQBCA)

Additional information

Weight 4.97 kg
Size (mm)

Colour