7008 ACD/P4ADBB

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

These matched sets of two super-precision, high-capacity, D design, single row angular contact ball bearings are available in a variety of arrangements.

They are designed for high-load capacity and relatively high speed operation and, compared to the equivalent SKF B and E design high-speed bearings, are best suited for heavier loads.

  • Very high running accuracy
  • Very high load carrying capacity

Dimensions

d
40 mm
 Bore diameter
D
68 mm
 Outside diameter
B
30 mm
 Width
d1
49.2 mm
 Shoulder diameter of inner ring (large side face)
r1,2
min.1 mm
 Chamfer dimension
r3,4
min.0.3 mm
 Chamfer dimension
Abutment dimensions - 7008 ACD/P4ADBBAbutment dimensions - 7008 ACD/P4ADBB

Abutment dimensions

da
min.44.6 mm
 Diameter of shaft abutment
Db
max.66 mm
 Diameter of housing abutment
ra
max.1 mm
 Radius of fillet
rb
max.0.3 mm
 Radius of fillet
dn
50.8 mm
 Position of oil nozzle

Calculation data

Basic dynamic load rating C
26 kN
Basic static load rating C0
20.8 kN
Fatigue load limit Pu
0.88 kN
Attainable speed for grease lubrication
To be calculated: Single bearing (19000) x speed reduction factor (see table below)
Attainable speed for oil-air lubrication
To be calculated: Single bearing (30000) x speed reduction factor (see table below)
Contact angle α
25 °
Ball diameter Dw
7.938 mm
Number of rows i
2
Number of balls (per bearing) z
18
Reference grease quantity (per bearing) Gref
2.4 cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class
B
Preload G
200 N
Axial stiffness
124 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.06
Correction factor dependent on contact angle f1
0.99
Correction factor, preload class B f2B
1.02
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Axial load factor (back-to-back, face-to-face) Y1
0.92
Axial load factor (back-to-back, face-to-face) Y2
1.41
Axial load factor (back-to-back, face-to-face) Y0
0.76
Radial load factor (back-to-back, face-to-face) X1
1
Radial load factor (back-to-back, face-to-face) X2
0.67
Radial load factor (back-to-back, face-to-face) X0
1
Add to Enquiry
SKU: 7008 ACD/P4ADBB-SKF Categories: , , , ,
SKF

Description

Properties

Contact type Normal contact (two-point contact)
Number of rows 2
Ring type One-piece inner and outer rings
Design High-capacity D
Universal matching bearing No
Matched arrangement Back-to-back <>
Number of bearings in matched set 2
Matched condition (axial clearance/ preload) Light preload
Tolerance class P4A
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Indicative carbon footprint for new product 1.35 kg CO2e

Logistics

Product net weight 0.376 kg
eClass code 23-05-08-04
UNSPSC code 31171531
Universal matching bearing(s)
No

 

Additional information

Weight 0.376 kg
Size (mm)

Colour

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