SECTION 3 - CHASSIS & TURNTABLE
3121784
3-11
Maintenance Schedule
Maintenance tasks are described in the sections below
that are required for optimal and trouble-free operation.
If increased wear is detected during regular inspections,
then reduce the required maintenance intervals according
to the actual indications of wear.
If you have questions concerning maintenance tasks and
intervals, please contact our customer service.
Lubrication
General re-lubrication of slew drives:
•
After each cleaning
•
Before and after longer periods of standstill, e.g. for
cranes and construction machines during the winter
months.
NOTICE
THE MAIN CAUSE FOR SLEWING RING FAILURE IS INADEQUATE LUBRI-
CATION. THE LUBRICATION INTERVALS ESSENTIALLY DEPEND ON
EXISTING WORKING AND ENVIRONMENTAL CONDITIONS, AS WELL AS
THE VERSION OF THE SLEW DRIVE. PRECISE LUBRICATION INTERVALS
CAN ONLY BE DETERMINED BY TESTS UNDER NORMAL OPERATING
CONDITIONS.
The specified values are valid for the following conditions:
•
Operating temperature on the slew drive < 70° C (158°
F).
•
Circumferential speed < 0.5 m/s (1.64 ft/sec) for SP
slew drives.
•
Output speed < 5 rpm for WD slew drives.
•
Low to moderate load.
NOTICE
COMPLY WITH THE INSTRUCTIONS IN THE OPERATING MANUAL PRO-
VIDED BY THE MANUFACTURER, FOR LUBRICATION OF OPTIONAL
INTERMEDIATE GEAR UNITS, BRAKES, AND MOTORS.
NOTICE
IF NECESSARY RE-LUBRICATE PERMANENT BRAKES. FOR THIS ONLY
USE THE SPECIAL GREASE SHELL RETINAX HDX2.
If comparable results are not available, the following table can be used as a guide value:
INTERVAL
MAINTENANCE TASK
TO BE EXECUTED BY
Weekly
Check seal
Qualified person
After 250 Operating Hours
Check tighten bolts
Qualified person
Check tilting clearance
Qualified person
After Every Additional
500 Operating Hours Or At Least
Every 6 Months
Check tighten bolts
Reduce the inspection interval if there is heavy wear or continuous operation.
Qualified person
Check tilting clearance
Reduce the inspection interval to 200 operating hours if the detected increase in tilting clearance
is approximately 75% of the permissible tilting clearance increase.
After further increase reduce the interval between inspections to 50 - 100 hours.
Qualified person
Check circumferential backlash
Reduce the inspection interval to 200 operating hours if the detected increase in circumferential
backlash is approximately 75% of the permissible circumferential backlash increase.
After further increase reduce the interval between inspections to 50 - 100 hours.
Qualified person
WORK CONDITIONS
LUBRICATING INTERVAL
TO BE EXECUTED BY
Dry and clean workshop hall (rotary tables, robots, etc.)
Approx. every 300 operating hours, at least every 6 months
Specialist
Severe conditions on open terrain (cranes, excavators, etc.)
Approx. every 100 to 200 operating hours, at least every 4 months
Specialist
Aggressive climatic conditions, (ocean, desert, arctic climate,
extremely polluted environment,
≥
70 operating hours per week
Every 50 operating hours, at least every
2 months
Specialist
Extreme conditions (tunnel boring machines, steel works, wind tur-
bines)
Continuous lubrication (through central lubrication or grease cups)
Specialist
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