S71911 ACB/P4ADGA

Matched set of two super-precision, high-speed B design, single row angular contact ball bearings with seals

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

Compared to the equivalent SKF E design high-speed bearings, these are suited for lighter loads.

  • Very high running accuracy
  • Accommodate high speeds
  • Reduced stresses on rolling contact surfaces
  • Non-contact seals
  • Integral sealing prolongs bearing service life

Dimensions

d
55 mm
 Bore diameter
D
80 mm
 Outside diameter
B
26 mm
 Width
d1
63.94 mm
 Shoulder diameter of inner ring (large side face)
d2
62.7 mm
 Shoulder diameter of inner ring (small side face)
D2
73.2 mm
 Recess diameter of outer ring (large side face)
D4
74.71 mm
 Recess diameter outer ring shoulder (small side face)
r1,2
min.1 mm
 Chamfer dimension
r3,4
min.0.3 mm
 Chamfer dimension
Abutment dimensions - S71911 ACB/P4ADGA

Abutment dimensions

da
min.59.6 mm
 Diameter of shaft abutment
da
max.63.3 mm
 Diameter of shaft abutment
db
min.59.6 mm
 Diameter of shaft abutment
db
max.62.1 mm
 Diameter of shaft abutment
Da
max.75.4 mm
 Diameter of housing abutment
Db
max.78 mm
 Diameter of housing abutment
ra
max.1 mm
 Radius of fillet
rb
max.0.3 mm
 Radius of fillet

Calculation data

Basic dynamic load rating C
15.3 kN
Basic static load rating C0
15.3 kN
Fatigue load limit Pu
0.655 kN
Attainable speed for grease lubrication
To be calculated: Single bearing (20000) x speed reduction factor (see table below)
Attainable speed for oil-air lubrication
To be calculated: Single bearing () x speed reduction factor (see table below)
Contact angle α
25 °
Ball diameter Dw
5.556 mm
Number of rows i
2
Number of balls (per bearing) z
28
Preload and stiffness (back-to-back, face-to-face)
Preload class
A
Preload G
55 N
Axial stiffness
88 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.09
Correction factor dependent on contact angle f1
0.99
Correction factor, preload class A f2A
1
Correction factor for hybrid bearings fHC
1
Factors for equivalent bearing load calculation
Calculation factor e
0.68
Axial load factor (single, tandem) Y1
0
Axial load factor (single, tandem) Y2
0.87
Axial load factor (single, tandem) Y0
0.38
Radial load factor (single, tandem) X1
1
Radial load factor (single, tandem) X2
0.41
Radial load factor (single, tandem) X0
0.5
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: S71911 ACB/P4ADGA-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-speed B
Universal matching bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
Matched arrangement Universal matching
Number of bearings in matched set 2
Matched condition (axial clearance/ preload) Extra light preload
Tolerance class P4A
Material, bearing Bearing steel
Coating Without
Sealing Seal on both sides
Sealing type Non-contact
Lubricant Grease
Indicative product carbon footprint to manufacture 1.27 kg CO2e

Logistics

Product net weight 0.353 kg
eClass code 23-05-08-04
UNSPSC code 31171531

Aftermarket replacement

Super-precision, high-speed, B design, universally matchable single row angular contact ball bearing with seals 2 x S71911 ACBGA/P4A
Verify quantity of bearing rows

(55X80X26) (S71911ACBP4ADGA)

Additional information

Weight 0.353 kg
Size (mm)

Colour

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