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Front Part Spare Parts for Montabert HC158
The front part (front housing assembly) used in Montabert HC158 hydraulic drifters is responsible for transmitting rotation torque, supporting axial loads, and protecting critical components located at the drilling end of the machine. This assembly ensures stable rotation, accurate power transfer to the drill string, and reliable operation under heavy drilling conditions.
The front part includes the main housing, drive and receiver gears, needle bearings, thrust rings, linings, and multiple sealing elements. These components work together to maintain precise alignment, reduce mechanical stress, and prevent contamination of internal parts during continuous drilling operations.
Components included in the front part
| Item | Part No. | Name | Qty | Remarks |
| 10 | 86221124 | Housing (including internal components) | 1 | Main front housing |
| 20 | 86373115 | Helicoil thread UNF 1"1/8 | 2 | Thread insert |
| 30 | 86220274 | O-ring | 5 | Seal item |
| 40 | 86223443 | Hexagonal screw UNF 3/4" | 4 | - |
| 50 | 86222882 | Nut | 4 | - |
| 60 | 86511466 | Receiver gear (including internal components) | 1 | Includes items 70–80 |
| 70 | 86511441 | Splined nut | 1 | - |
| 80 | 86220779 | Snap ring | 1 | - |
| 90 | 86221116 | Thrust ring | 1 | - |
| 100 | 86221595 | Needle bearing | 1 | - |
| 110 | 86221678 | Thrust ring | 1 | - |
| 120 | 86313129 | Drive gear | 1 | Motor gear |
| 130 | 86223021 | Needle bearing | 1 | - |
| 140 | 86607942 | Front housing | 1 | - |
| 150 | 86223286 | Tight seal | 1 | Seal item |
| 160 | 86578689 | O-ring | 1 | Seal item |
| 170 | 86578697 | O-ring | 1 | Seal item |
| 180 | 86578705 | O-ring | 1 | Seal item |
| 190 | 86578713 | O-ring | 1 | Seal item |
| 200 | 86339272 | Rear lining | 1 | - |
| 210 | 86220746 | Seal | 2 | Seal item |
| 220 | 86353356 | Front lining | 1 | - |
| 230 | 86331121 | Lip seal | 2 | Seal item |
| 240 | 86353083 | Lip seal | 1 | Seal item |
| 250 | 86223716 | Gudgeon | 2 | - |
| 260 | 86271558 | Nut | 2 | - |
| 270 | 86352416 | Retainer | 1 | - |
| 280 | 86353323 | Front guide (including internal components) | 1 | Includes items 290–300 |
| 290 | 86511482 | Guiding ring | 1 | - |
| 300 | 86235538 | Snap ring | 1 | - |
| 310 | 86223286 | Tight seal | 1 | Seal item |
| 320 | 86235355 | O-ring | 1 | Seal item |
| 330 | 86353083 | Lip seal | 1 | Seal item |
| 340 | 86578671 | Seal | 1 | Seal item |
Browse the complete spare parts catalog for the Montabert HC158 hydraulic drifter to find original front part components, sealing kits, and service parts required for reliable rotation performance and long service life.