S71911 ACD/HCP4ADBC

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

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

They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures.

  • Very high running accuracy
  • Very high load carrying capacity
  • 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
62.7 mm
 Shoulder diameter of inner ring (large side face)
D4
76.62 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 ACD/HCP4ADBC

Abutment dimensions

da
min.59.6 mm
 Diameter of shaft abutment
da
max.62.1 mm
 Diameter of shaft 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
29.6 kN
Basic static load rating C0
27.5 kN
Fatigue load limit Pu
0.85 kN
Attainable speed for grease lubrication
To be calculated: Single bearing (17000) 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
7.938 mm
Number of rows i
2
Number of balls (per bearing) z
23
Preload and stiffness (back-to-back, face-to-face)
Preload class
C
Preload G
480 N
Axial stiffness
234 N/µm
Correction factors for preload calculation
Correction factor dependent on bearing series and size f
1.15
Correction factor dependent on contact angle f1
0.98
Correction factor, preload class C f2C
1.12
Correction factor for hybrid bearings fHC
1.04
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
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SKU: S71911 ACD/HCP4ADBC-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) Moderate preload
Tolerance class P4A
Material, bearing Hybrid (ceramic balls)
Coating Without
Sealing Seal on both sides
Sealing type Non-contact
Lubricant Grease
Indicative product carbon footprint to manufacture 1.09 kg CO2e

Logistics

Product net weight 0.303 kg
eClass code 23-05-08-03
UNSPSC code 31171531

(55X80X26) (S71911ACDHCP4ADBC)

Additional information

Weight 0.303 kg
Size (mm)

Colour

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