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A Large Long Nonstandard High Hardness High Quality Big Crankshaft is a precision-engineered component designed for heavy-duty, high-performance, and specialized applications where standard crankshafts cannot meet the demanding requirements. These crankshafts are commonly used in industries such as marine propulsion, power generation, heavy machinery, motorsports, and aerospace.
Oversized length, stroke, and counterweight design beyond standard specifications.
Custom-engineered for large diesel engines, ship propulsion systems, and industrial power units.
May include extended journals, reinforced counterweights, or unique geometries for specialized applications.
Made from high-strength alloy steels (e.g., 42CrMo, 4340, EN24/34CrNiMo6).
Heat-treated (quenching & tempering, induction hardening, nitriding) to achieve 50-60 HRC surface hardness.
Enhanced fatigue resistance and durability under extreme loads.
Ultra-precise CNC machining & grinding (tolerance: ±0.005mm).
Dynamic balancing (G2.5 or better) for smooth high-RPM operation.
Non-destructive testing (NDT) such as ultrasonic or magnetic particle inspection to ensure defect-free construction.
| Industry | Application | Key Requirements |
|---|---|---|
| Marine Engines | Cargo ships, naval vessels | Corrosion resistance, high torque |
| Power Generation | Backup diesel generators | Extreme reliability, long lifespan |
| Heavy Machinery | Mining, oil drilling | Shock resistance, heavy load capacity |
| Motorsports | Drag racing, endurance engines | Lightweight + high strength |
| Aerospace & Defense | Auxiliary power units (APUs) | Extreme environment performance |
The rough forging is then subjected to various machining processes to achieve the precise dimensions, tolerances, and surface finishes required for a high-performance crankshaft. These processes include turning, milling, drilling, and grinding, which refine the into a component capable of precise and reliable operation within an engine.
In summary, the crankshaft forging blank is a crucial intermediate product in the manufacturing of crankshafts. It represents a blend of metallurgical expertise and advanced forging techniques, setting the stage for the creation of a component that is essential for the conversion of reciprocating motion into rotational force in engines.
TOTEM Machinery all the time works to supply GEAR SHAFT, ECCENTRIC SHAFT, HERRINGBONE GEAR, BEVEL GEAR, INTERNAL GEAR and other parts for transmission device & equipment (large industrial reducer & driver). Which mainly use to industrial equipment on fields of port facilities, cement, mining, metallurgical industry etc.
TOTEM Machinery invests and becomes shareholders of several machine processing factories, forging factories, casting factories, relies on these strong reliable and high-quality suppliers' network, to let customers worry-free purchase.
TOTEM Philosophy: Quality-No.1, Integrity- No.1, Service- No.1
24hrs Salesman on-line, guarantee quick and positive feedback. Experienced and Professional Forwarder Guarantee Log. transportation.
We have different specifications of oil forging presses,ring rolling machines,electric arc furnaces,thus we can provide variety of forging,casting and welding materials according to customer's requests.
- Large capacity, completed variety of quenching medium: oil,water,salt water,water based mixture.Advantage of our Heat Treatment:
- Professional, specific furnace, single-minded
- Vertical pit furnace,keep the temperature uniformity during heating,+/-1°
- Small deformation,little oxide layer,reduce material cost
- Different materials can be cooled at the best speedOur products have been exported to abroad for more than 10 years and 50+ countries,such as America,Australia,Russia,Pakistan,Thailand,Indian,Morocco,Romania,Spain,etc.
Shanghai Totem Machinery Co.,Ltd
Facebook: Shanghai Totem
What's TOTEM product processing progress?
Drawing CHECK, Make Forging Mold, Forging Mold Quality Inspection Check, Machine Processing, Check Size\Hardness\Surface Finish and other technical parameters on drawing.
How about TOTEM's export package?
Spray anti-rust oil on Herringbone Gear Shaft, Wrap waterproof cloth around Gear Shaft for reducer, Prepare package by shaft shape&weight to choose steel frame, steel support or wooden box etc.
Could I customize gear\gear shaft on TOTEM?
We supply customized Gear Shaft,Eccentric Shaft,Herringbone Gear,Internal Gear,Bevel Gear with big module, more than 1tons big weight, more than 3m length, forging or casting 42CrMo/35CrMo or your specified required material.
Why can I choose TOTEM?
TOTEM has 24hrs Salesman on-line, guarantee quick and positive feedback.
TOTEM Machinery invests and becomes shareholders of several machine processing factories, forging factories, casting factories, relies on these strong reliable and high-quality supplier's network, to let customers worry-free purchase.
Experienced and Professional Forwarder Guarantee Log. transportation.
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