Our goal is to exceed our customers' expectation in providing quality products

Google+
LinkedIn
Pinterest

+86-177-4621-9784
admin@wsbearing.com

SKF ANGULSKF CONTACT BALL BEARINGS, SUPER-PRECISION SKF 71921 CDGA/P4A

Home SKF BEARING SKF ANGULSKF CONTACT BALL BEARINGS, SUPER-PRECISION SKF 71921 CDGA/P4A

SKF ANGULSKF CONTACT BALL BEARINGS, SUPER-PRECISION SKF 71921 CDGA/P4A

This ultra-precision, high-capacity, single-row angular contact ball bearing can withstand both radial and axial loads acting simultaneously, while axial loads can only act in one direction. Designed for low to medium operating temperatures, relatively high speeds and heavy loads. Thanks to the universal mating, the bearings can be mounted arbitrarily and the load can be evenly distributed between the two bearings within a pre-set preload range, without the need for gaskets or similar devices.

  • 15° or 25° contact angle
  • Ultra-high running accuracy
  • Ultra-high load carrying capacity
  • Higher rotational speed and stiffness
  • Can be paired universally
SKF BEARING

Description

SKF 71921 CDGA/P4A

Universal mating bearings
Yes, back-to-back (<>), face-to-face (><), or tandem (>>) configurations
Size – 71921 CDGA/P4A

size

d
105 mm
 aperture
D
145 mm
 Outside diameter
B
20 mm
 width
d1
117.3 mm
 Inner ring flange diameter (large end)
d2
117.3 mm
 Inner ring flange diameter (small end face)
D1
132.7 mm
 Outer ring flange diameter (large end)
r1,2
min.1.1 mm
 Chamfer size
r3,4
min.0.6 mm
 Chamfer size
a
26.8 mm
 The distance from the end face to the pressure point
Shoulder size - 71921 CDGA/P4AShoulder size - 71921 CDGA/P4A

Shoulder size

da
min.111 mm
 Shaft shoulder diameter
db
min.111 mm
 Shaft shoulder diameter
Da
max.139 mm
 Housing shoulder diameter
Db
max.141 mm
 Housing shoulder diameter
ra
max.1 mm
 Fillet radius
rb
max.0.6 mm
 Fillet radius
dn
120.6 mm
 Injector location

Data calculations

Basic dynamic load rating C
61.8 kN
Basic static load rating C0
69.5 kN
Fatigue load limits Pu
2.6 kN
Allowable speed
Contact SKF to find out about achievable speeds
Contact angle α
15 °
Ball diameter Dw
12.7 mm
Number of columns i
1
Number of balls (per bearing) z
27
Reference grease volume (per bearing) Gref
11.1 cm³
PRELOAD AND STIFFNESS (BACK-TO-BACK CONFIGURATION, FACE-TO-FACE CONFIGURATION)
Preload class
A
Preload when not installed G
230 N
Axial stiffness
110 N/µm
PRELOAD CORRECTION FACTOR
The correction factor depends on the bearing series and size f
1.25
The correction factor depends on the angle of contact f1
1
preload grade A correction factor, f2A
1
Correction factor for hybrid bearings fHC
1
EQUIVALENT BEARING LOAD CALCULATION FACTOR
Equivalent load calculation factor f0
16.4
Equivalent load add-on factor
Please see notes 1 and 2 below

As a professional bearing exporter and SKF distributor, WS Bearing stocks thousands kindsof Angular contact ball bearings,super-precision for sale，We can export to Singapore–Viet Nam–Malaysia–Indonesia-Germany-USA etc.we have always been committed to providing our customers with the highest quality products and the most satisfactory services. Through collaborations with top brands such as SKF, TIMKEN, FAG, THK, and others, we have not only established a wide range of product lines but also accumulated rich industry experience and technical knowledge. If you have problems about selecting proper bearings for your special applications, please contact us right now

Inquiry Us





Related Products