Hoyer MS 56-132 Instrucciones página 5

Guidelines for regreasing intervals are:
20.000 - 40.000 duty hours for > 4 pole motors.
10.000 - 20.000 duty hours for 2 and 2/4 pole motors.
The shorter times are valid for larger frame sizes.
Motors fitted with grease nipples
Grease the motor while running and especially during
start-up for the first time.
If grease outlet plug fitted, remove temporarily when
greasing, or permanently with automatic greasing.
If the motor is fitted with a greasing information plate,
follow the values given, otherwise use values as fol-
lows.
Frame Amount of 3600 3000 1800 1500 1000 500-900
size Grease (g) r/min r/min r/min r/min r/min r/min
Ball bearings
Lubrication intervals in duty hours
112. 132 15 4200 4800 7000 7800 10000 10500
160, 180 20 3200 4200 6000 7000 9000 10000
200, 225 25 1800 3100 5500 6500 8500 9000
250, 280 35 800 2000 5000 6000 8000 8500
315 50 800 2000 4600 5500 7500 8000
355 60 -
400 81 -
Roller bearings
Lubrication intervals in duty hours
200, 225 25 900 1500 4300 5000 6500 7000
250, 280 35 400 1000 3300 4500 6300 6800
315 50 400 1000 2700 3800 6000 6500
355 60 -
400 81 -
The table is prepared for horizontally mounted motors.
Greasing intervals for vertical motors are half of the
above values.
The grease amount in the table is used if small quanti-
ties of fresh grease are replaced at regular intervals as
above.
The table values are based on 80° C bearing tempera-
ture. The values should be halved for every 15 K increase
in bearing temperature.
If the maximum bearing temperature is 70° C, the table
values may be doubled.
WARNING
The maximum operating temperature of the grease and
bearings must not be exceeded.
Higher speed operation, eg frequency converter appli-
cations, or slower speed with heavy loading will require
shortened greasing intervals. Consult Svend Høyer A/S
in such cases.
Typically a doubling of speed will require a reduction of
greasing intervals to approx. 40% of values tabulated
above.
Suitability of bearings for high speed operation must
also be checked.
motorinstruktioner-A5-10 OUTL.indd 5 motorinstruktioner-A5-10 OUTL.indd 5
1000 4000 5000 7000 8000
- 2500 3000 5000 6000
- 2200 3200 5500 6000
- 1800 2000 3500 4000
September 2005
Lubricants
When regreasing, use only special ball bearing grease
with the following properties:
• good quality lithium base or lithium complex grease
• base oil viscosity 100-140 cST at 40° C
• consistency NLGI grade 2 or 3
• temperature range -30° C - +120° C, continuously.
Grease with the correct properties are available from all
the major lubricant manufacturers.
If the make of grease is changed and compatibility is
uncertain, grease several times at short intervals in order
to displace the old grease.
Highly loaded and/or slowly rotating bearings require
EP-grease.
If greasing intervals are short due to bearing tempera-
tures of 80° C or above, use high temperature greases
which normally permit approximately 15 K higher bear-
ing temperatures.
If the surrounding temperature is below -25° C consult
Svend Høyer A/S regarding the possible use of low tem-
perature grease.
WARNING
Many greases can cause skin irritation and eye infla-
mation.
Follow all safety precautions specified by the manu-
facturer.
Spare parts
When ordering spare parts, the full type designation
and product code as stated on the rating plate must be
specified. If the motor is stamped with a serial manufac-
turing number, this should also be given.
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