Page 1062 - Rollingbearings

22 NoWear coated bearings

Mor NoWear is a wear-resistant carbon coating Fig. 1
More informatione information
that can be applied to the rolling elements NoWear coated bearing
and inner ring raceway(s) of a bearing
17
Bearing life and load ratings al bearing knowledge
Gener 63 (designation sufix L7DA) or only the rolling
elements (designation sufix L5DA) (ig. 1)
59
Design considerations earing selection process
B 59 A physical vapour deposition process
109
Bearing systems ubrication
L 160 applies the wear-resistant carbon coating
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B 13 Thickness of the coating ranges from 1 to
Recommended its earing interfaces
Se
Abutment and illet dimensions at tolerances for standard 208 3 μm, depending on the size of the bearing
conditions 148 The hardness of the coating is 1 200 HV10
Lubrication
Selecting internal clearance or 239 NoWear coated bearing surfaces retain
preload 182 the toughness of the underlying material
Sealing, mounting and while adopting the hardness, improved fric-
Mounting, dismounting and
dismounting 193 tion properties and wear-resistance of the
bearing care
271
Mounting instructions for coating
individual bearings † skf com/mount During the running-in period, minute
SKF bearing maintenance amounts of the coating material are trans-
handbook (ISBN 978-91-978966-4-1) ferred to the counter-surfaces This coating L5DA
reduces friction and improves resistance
against wear and smearing, even in bearings
where only the rolling elements are coated where NoWear coated bearings are used
include:
Bearing features
• paper machines
• marine and offshore applications
22 • Long service life • fans
• compressors
• Withstand severe operating conditions • hydraulic pumps
– increased risk of smearing • gearboxes
– insuficient lubricating ilm • hydraulic motors
– sudden load variations
– light loads NoWear coated bearings are not intended
– rapid speed changes for vacuum or other completely dry running
– vibration and oscillations applications The coating does not act as a
barrier against oxygen and is therefore not
Applications recommended as a corrosion inhibitor

NoWear coated bearings may provide new
possibilities for existing applications operating
under severe conditions They can provide
new design possibilities while requiring no
major design changes Typical applications

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