Daihatsu DC17 Crankshaft | Genuine Marine Engine Parts
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Model Series: DC17 crankshaft, primarily for Daihatsu 5DC-17 (5-cylinder) and 6DC-17 (6-cylinder) inline 4-stroke diesel engines.
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Engine Specs: Bore 170 mm, stroke 270 mm; rated speed 900-1000 RPM, clockwise rotation from flywheel end.
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Crankshaft Dimensions: Standard crankpin diameter 145 mm, bearing width 64 mm; main journals with thin split-type bearings.
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Material & Construction: Forged steel construction, hardness ~240 HB; one-piece design with thrust bearing at rear main journal.
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Compatibility: Fits DC17A variants; undersize options (0.5-3.0 mm) for reconditioning via grinding.
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Power Output: Supports engines up to ~300 kW (5DC-17), ideal for auxiliary marine generators.
Daihatsu DC17 Crankshaft | Genuine Marine Engine Parts
The Daihatsu DC17 crankshaft is a precision-forged part made for the DC17 series marine auxiliary diesel engines, such as the 5DC-17 and 6DC-17 variants. Designed to work reliably in tough marine conditions, it turns the back-and-forth action of a piston into rotational power while withstanding heavy loads and vibrations. This forged crankshaft has a normal crankpin diameter of 145 mm and a thin bearing width of 64 mm. It is perfect for small auxiliary generator sets on ships.
Daihatsu DC17 Specifications:
| Specification | Details |
|---|---|
| Crankpin Diameter (Std) | 145 mm |
| Crankpin Bearing Width | 64 mm |
| Main Journal Type | Thin split bearings ​ |
| Material | Forged steel ​ |
| Hardness | ~240 HB ​ |
| Undersize Options | Up to 3.0 mm (0.5, 1.0, 1.5, 2.0, 3.0 mm bearings available)Â |
| Engine Compatibility | 5DC-17, 6DC-17 |
Key features:
1) The design is forged from a single piece, which guarantees exceptional fatigue resistance and strength in marine environments.
2) The compact crankpin dimensions (145 mm diameter, 64 mm breadth) are designed to optimize space in auxiliary engines.
3) Minimizes delay by being compatible with undersize bearings for in-situ grinding and repair.
4) Incorporates thrust bearings into the rear No. 1 main journal to facilitate the management of axial loads.
5) Supports high-pressure operation in turbocharged 4-stroke diesel engines at 900-1000 RPM.
Marine Applications:
- Power generating for commercial ships and boats.
- Marine diesel generator sets that need to turn at a steady speed of 720 to 1000 RPM.
- Support for emergency and standby propulsion in rough seas.
- Repairs to the engine on board by grinding or polishing it without taking it out.
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