Delco Remy 50MT heavy-duty straight-drive starter — the industry benchmark for ultra-class mining and large-displacement diesel engines up to 29.5 L.
The 50MT is a straight-drive, SAE 3 mount starter designed for the world’s most demanding heavy-duty and industrial cranking applications. Engines up to 29.5 L are routinely cranked in extreme temperature and vibration environments. Available in 12V, 24V, 32V and 64V configurations; pinion counts vary per voltage and application.
| Type | Heavy duty straight-drive (SAE 3 mount) |
|---|---|
| Voltage options | 12 V / 24 V / 32 V / 64 V DC |
| Pinion | 11T (24 V, 6/8 pitch) · 12T (12 V, 8/10 pitch) |
| Rotation | CW (viewed from drive end) |
| Engine displacement | Up to 29.5 L |
| Nose length | 462 mm |
| Duty cycle | 30 s on / 2 min off (max) |
| Protection | IP55 — sealed terminals |
| Equipment | Engine | Industry | Notes |
|---|---|---|---|
| CAT 797F | CAT 3524B | Mining & Minerals | Ultra-class haul truck — 64 V system required |
| Komatsu 930E | Komatsu SSDA18 | Mining & Minerals | Electric-drive haul truck |
| Liebherr T 284 | Cummins QSK78 | Mining & Minerals | 363-tonne payload ultra-class haul truck |
| Cummins QSK60 | Cummins QSK60 | Power Generation | Large genset / marine propulsion — 60 L |