Coefficients of adhesion for transverse interference fits in the longitudinal and circumferential direction when slipping according to DIN 7190.
| Material pairing, lubrication, joining |
Coefficients of adhesion νru, νrl |
| Steel-steel combination |
| Pressure oil fits normally joined with mineral oil |
0.12 |
| Pressure oil fits with degreased pressure surfaces joined with glycerine |
0.18 |
| Normal shrink fit after warming of the outer part up to 300°C in an electric furnace |
0.15 |
| Shrink fit with degreased pressure surfaces after warming of the outer part up to 300°C in an electric furnace |
0.20 |
| Steel-cast iron combination |
| Pressure oil fits normally joined with mineral oil |
0.10 |
| Pressure oil dressings with degreased pressing surfaces |
0.16 |
| Further steel combinations |
| Stel-MgAL combination, dry |
0.10 to 0.15 |
| Steel-CuZn combination, dry |
0.17 to 0.25 |