OPERATION AND MAINTENANCE MANUAL
MAC QM MOTORS
PAGE: 48
CODE: CTT42 EDITION: 01 RELEASE: JULY 2016
Subject to technical changes without prior notice
6.2.3
Re-greasing of the bearings
The MAC QM motors are fitted with deep groove bearings without blanking plates, which do require regular re-greasing.
As an option, electrically insulated ball or roller bearings can be installed and they must be re-greased regularly.
The grease that is to be used on insulated bearings with no blanking plates and roller bearings must be KP2N-40 lithium soap-
based grease according to DIN51825 or equivalent.
To determine the amount of grease that is to be inserted during the re-greasing operation, VASCAT provides the customer with
the following equation as a guide for determining the grams of grease necessary:
m = D · B · x
Where:
m: Amount of grease to be inserted during the re-greasing operation [gr]
D: Exterior diameter of the bearing to be greased [mm]
B: Width of the bearing in question [mm]
x: Factor that will depend on the re-greasing frequency (0.002 weekly, 0.003 monthly and 0.004 annually).
VASCAT recommends re-greasing every 500 hours or once a month.
The greasing nipples VASCAT fits to its motors comply with the DIN 71412 standard and are zinc-coated. The types used in
standard procedures are as follows:
Figure 16: Standard greasing nipples on MAC-Q motors
NB
Damages to the motor bearings
If greasers containing different thickeners and basic oils are mixed together, the lubricant properties of the resulting grease may
be inferior. The same type of grease must be used to lubricate the bearings at all times. Otherwise, the bearings may be
damaged.
MOVING ROTATING PARTS
During the re-greasing operation, the customer is responsible for taking the necessary precautions to avoid accidental contact
with the rotating parts.
Summary of Contents for MAC QM
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