Page 1032 - Rollingbearings

INSOCOAT bearings p1030

20 INSOCOAT bearings

Bearing features
Mor
More informatione information Electric motors, generators and associated
equipment are at risk when an electric cur-
rent passes through their bearings This can • Protection against electrical erosion
17
Gener 63 damage the contact surfaces of rolling elem- With insulating properties integrated into
Bearing life and load ratings al bearing knowledge
ents and raceways in the bearings (electrical the bearing, INSOCOAT bearings can
59
Design considerations earing selection process
B 59 erosion) and rapidly degrade the grease An improve reliability and increase machine
L
Bearing systems ubrication 160 additional risk in electric motors and gener- uptime by virtually eliminating the prob-
109
B 1699 ators comes from high frequency currents lem of electrical erosion
Recommended its earing interfaces
13
Abutment and illet dimensions at tolerances for standard
Se 208 caused by the inherent stray capacitance
conditions 148 The risk of damage increases where the • High electrical resistance
Selecting internal clearance or 239 application uses a frequency converter The aluminium oxide coating provides a
Lubrication
preload 182 INSOCOAT bearings: minimum electrical resistance of 200 MΩ
Mounting, dismounting and
Sealing, mounting and and can withstand voltages up to
271
bearing care
dismounting 193 • are designed to prevent electric current 3 000 V DC
Mounting instructions for from passing through the bearing
Mounting instructions for
20 individual bearings † skf com/mount • have the external surfaces of either their • Consistent electrical performance
SKF bearing maintenance
individual bearings † skf com/mount inner or outer ring coated with an insulat- Plasma-spray coatings are normally
handbook (ISBN 978-91-978966-4-1) ing aluminium oxide layer, by applying a hygroscopic and, therefore, vulnerable to
sophisticated plasma-spray process for an penetration caused by condensation To
outstanding quality inish protect against this effect, INSOCOAT
• are a very cost-effective solution com- bearings are treated with a unique
pared with other insulation methods sealant
Fig. 1
INSOCOAT bearings, outer ring coated

Single row deep Single row cylindrical
groove ball bearing roller bearing

1030