| Type | D-Value | Kg (Approx) |
Hole Pattern a x b mm |
¯ d mm |
¯ D |
| JAK 22 | 130kN | 28 | 160x100 | 21 | 95 |
D-Value formula according to DIN 74051
mK = maximum total weight of truck in tons mA = maximum total weight of trailer in tons |
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Example how to calculate the D-value: The D-value of an automatic towing hitch for the following weights shall be stipulated:
The D-value of 102,7kN requires a JAK 22 |
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| Fig. | Description | Type | Part no. | Qty Per Hitch |
| 1 | Lock catch spring | 22 | AK 1232 | 1 |
| 2 | Lock catch | 22 | AK 1218 | 1 |
| 3 | Spring for lifting tongue | 22 | AK 1225 | 2 |
| 4 | Lifting tongue | 22 | AK 1220 | 1 |
| 5 | Conical helical spring | 22 | AK 1231 | 1 |
| 6 | Locking bolt | 22 | AK 1219 | 1 |
| 7 | Upper bushing | 22 | AK 1231 | 1 |
| 8 | Lower Bushing | 22 | AK 1222 | 1 |
| 9 | Rubber cushions | 22 | AK 1214 | 2 |
| 10 | Prop | 22 | AK 1224 | 2 |
| 11 | Hex bolt M8 x 22mm with spring washer A8 | 22 | AK 1248 | 4 |
| 12 | Clamping Sleeve | 22 | AK 1249 | 1 |
| 13 | Housing | 22 | AK 1203 | 1 |
| Fig. | Description | Type | Part no. | Qty Per Hitch |
| 14 | Lever | 22 | AK 1226 | 1 |
| 15 | Snap ring | 22 | AK 1218 | 1 |
| 16 | Housing with plastic pad complete (no 24) | 22 | AK 1201 | 1 |
| 17 | Fork and shaft | 22 | AK 1202 | 1 |
| 18 | Front retainer cup | 22 | AK 1231 | 1 |
| 19 | Intermediate retainer cup | 22 | AK 1210 | 2 |
| 20 | Rear retainer cup | 22 | AK 1205 | 1 |
| 21 | Nut | 22 | AK 1217 | 1 |
| 22 | Hex bolt M8x22mm with spring washer A8 | 22 | AK 1251 | 1 |
| 23 | Protective stopper | 22 | AK 1235 | 1 |
| 24 | Plastic pad complete | 22 | AK 1262 | 1 |
| 24 | Plastic pad complete | 22 | AK 1262 | 1 |
| 1-6, 10-14 |
Locking device complete | 22 | AK 1252 | 1 |