GMN rollerramp clutches are shipped rust protected - not lubricated, series VGV is grease packed for life-time without service. They all require proper lubrication with lubricants as per our recommendations (see below). At high speeds it is absolutely necessary to use oil or oil mist lubrication - no grease.
Freewheel clutches transmit torque by friction. For optimum life and performance use oil types CL as per DIN 51517 part 2 or CLP as per DIN 51517 part 3. No molybdenum disulphite or graphite additives are allowed.
Before use, GMN clutches should be cleaned with a Stoddard solvent; do not use trichloroethylene or similar products. After cleaning, clutches should be filled with lubricants as recommended below up to 1/3 of outer raceway diameter when used in horizontal position. Changing oil on a regular basis will increase lifetime and enhance performance of the clutch. We recommend a first oil change of oil after 10 hours of use and then in intervals of 2000 hours when the clutches are used with maximum overrunning speed.
| Operating temperature |
Oil -20°C...+30°C - 4°F to +86°F |
Oil +10°C... +50°C +50°F... +122°F |
Oil +40°C ... +80°C +104°F...+176°F |
Grease |
| Lubricant | CL 1 CLP 10 |
CL 22 CLP 22 |
CL 46 CLP 46 |
Grease K Grease KT |
| Viscosity at 40°C (104° F) ISO-VG DIN 51519 | 10 mm2/s (cSt) | 22 mm2/s (cSt) | 46 mm2/s (cSt) | |
| ESSO | NUTO H 10 | NUTO H 22 | NUTO H 46 | BEACON 2 |
| CASTROL | HYSPIN VHG 10 | HYSPIN VG 22 | HYSPIN VG 46 | CASTROL LZV, |
| KLUBER | CRUCOLAN10 | CRUCOLAN 22 | CRUCOLAN 46 | ISOFLEX LDS 18 SPECIAL A |
| LUBRICATION | SPECIAL A | |||
| OPTIMOL | ULTRA 10 | ULTRA 22 | ULTRA 46 | LONGTIME PD1 |
| SHELL | TELLUS OEL 10 | TELLUS OEL 22 | TELLUS OEL 46 | ALVANIA FETT R2 |
If in doubt, please get in contact with the specialists of the lubricant producer.
The company Stringbike enters the market with a revolutionary new drive system - provided with GMN-freewheel-clutches.
Download area 