Vascat MAC-HS 100, Operation And Maintenance Manual

Page: 26 / 64

OPERATION AND MAINTENANCE MANUAL
MAC-HS MOTORS
PAGE: 26
CODE: CTT32 EDITION: 04 RELEASE: SEPTEMBER 2020
Subject to technical changes without prior notice
3.6.5 Bearings
MAC-HS motors include different bearings types depending on their frame size (shaft height). The table below summarises the
bearings considered standard for each of them:
Motor type Bearing
n L10h C P max
rpm h N N
MAC-HS 100
D.E. Deep grove ball bearing 3000 20000 16600 1083
N.D.E. Deep grove ball bearing 3000 20000 16000 1044
MAC-HS 132
D.E. High speed hybrid spindle bearing 3000 20000 21600 1409
N.D.E. High speed hybrid spindle bearing 3000 20000 21600 1409
MAC-HS 160
D.E. High speed hybrid spindle bearing 3000 20000 17300 1129
N.D.E. High speed hybrid spindle bearing 3000 20000 17300 1129
MAC-HS 200
D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
N.D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
MAC-HS 225
D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
N.D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
MAC-HS 250
D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
N.D.E. High speed hybrid spindle bearing 3000 20000 19600 1279
Table 18: Technical specifications of MAC HS motor bearings
N.D.E. = Rear / Non Drive End DE = Front / Drive End
TERMINOLOGY:
n = Reference speed for calculating L10h service life
L10h = Bearing service life, in h
C = Rated dynamic load of bearing
max P = Radial load admissible on bearing for L10h and n
All bearings mounted in MAC-HS motor series are greased for life
The specific bearing reference is given in each motor test report
MAC-HS motors include as standard an SGR shaft grounding ring and galvanic insulation on bearings to prevent problems
caused by bearing currents.
A motor may need some type of special execution (considered as non-standard) that includes a bearing different to those
specified above. In said case, the customer must check with VASCAT to make sure that he has all the relevant information.