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SKF needle roller bearings SKF PNA 12/28

Home SKF BEARING SKF needle roller bearings SKF PNA 12/28

SKF needle roller bearings SKF PNA 12/28

Spherical needle roller bearings provide a compact solution in applications where space is limited. Due to the large number of rollers, they have a large load-bearing capacity. In its internal design, a convex outer ring is used to accommodate the two concave housing rings in the tensile sleeve, allowing the bearing to compensate for the initial alignment error. Bearings with inner rings are used in applications where shafts cannot be hardened and ground.

  • High radial load-bearing capacity
  • Withstands static initial misalignment
  • Small cross-section
SKF BEARING

Description

SKF PNA 12/28

Model
PNA 12/28
Dimensions - PNA 12/28

size

d
12 mm
 aperture
D
28 mm
 Outside diameter
B
12 mm
 width
F
15 mm
 Inner ring raceway diameter
D1
24.5 mm
 Inner diameter of the shoulder of the spacer
r
min.0.8 mm
 Chamfer size of the plate adapter sleeve
r1,2
min.0.3 mm
 Inner ring chamfer size
s
max.0.5 mm
 Bearing rings in normal position allow axial displacement relative to other rings
Abutment size - PNA 12/28

Shoulder size

da
min.14 mm
 The minimum allowable shoulder diameter of the bearing housing
Da
min.23.5 mm
 The minimum permissible shoulder of the bearing housing is allowable
Da
max.24.5 mm
 The maximum allowable shoulder diameter of the housing
ra
max.0.8 mm
 Chamfer radius
rb
max.0.3 mm
 Chamfer radius

Data calculations

Basic dynamic load rating C
7.37 kN
Basic static load rating C0
9.15 kN
Fatigue load limits Pu
1.08 kN
Reference speed
24 000 r/min
Limit speed
28 000 r/min

As a professional bearing exporter and SKF distributor, WS Bearing stocks thousands kindsof SKF needle roller bearings 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

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