Maintenance Work; Oil Lubrication; Grease Lubrication - DEMAG DRF 200 Assembly Instructions Manual

8.4

Maintenance work

8.4.1

Oil lubrication

General information on oil lubrication
Under normal operating conditions, the lubricant must be changed after 10000 hours of service. The lubricant
should, however, be changed at least every 4 years.
Under exceptional operating conditions, e.g. high ambient temperatures, we recommend that the oil should be
changed at shorter intervals.
Oil change
Drain the old oil at operating temperature.
To do this, first remove the air vent screw at the top of the gearbox and then the plug at the bottom, and the oil will
run out.
For each oil change, we recommend that the gearbox is filled and flushed with oil of the same viscosity.
The flushing oil should have a viscosity of 46 – 68 mm
approximately twice that specified for lubrication. Switch the motor on and allow the gears to run without any load
for a few minutes and then drain the flushing oil. Repeat this operation several times, also in alternate directions
of rotation, to ensure that all remains of the old lubricant are drained together with the flushing oil. Refer to the
data plate on the friction wheel travel drive for the required quantity of oil.
Oil grades
For ambient temperatures of approx. -10 °C to +50 °C, a gear oil of 220 mm
additives should be used, DIN 51502 CLP 220, e.g. BP ENERGOL GR-XP 220, Esso Spartan EP 220, SHELL
Omala oil 220, Mobilgear 630 or Aral Degol BG 220.
At higher or lower ambient temperatures, the type of oil used should be adapted to the specific conditions.
Required oil quantity 0,7 l
2,5 l pack
1,0 l pack
Tab. 25
8.4.2

Grease lubrication

General information on grease lubrication
If the gearbox is filled with grease, we recommend that this should be changed after 10000 hours of service. The
grease should, however, be changed at least every 4 years.
Grease change
Open the gearbox and clean it thoroughly with commercially available cleaning agent. Subsequently fill the hous‐
ing with fresh grease. The required quantity of grease is specified on the gearbox data plate.
Grease quality
For ambient temperatures of approx. -10 °C to +50 °C, a low-viscosity gear grease with a dripping point of approx.
150 °C and a worked penetration of 380 to 430 1/10 mm should be used, DIN 51502 GP 00F, e.g. BP Energrease
HT EP 00, SHELL special low-viscosity gear grease H, Esso Fibrax EP 370 or Aralub FD 00.
Required grease quantity 0,9 kg
0,2 kg pack
Tab. 26
40
/s at 40° C. The quantity of flushing oil used should be
2
/s at 40 °C with mild high-pressure
2
Order no.
472 900 44
472 902 44
Order no.
472 918 44