The Mitsubishi 6D31T crankshaft (ME082505) is manufactured from premium forged steel, perfectly suited for the 6D31T engine. It is commonly used in Komatsu SK200/120 excavators, Fuso Canter trucks, and medium-sized generator sets. These machines frequently operate for extended periods, digging and driving machinery under demanding external conditions. Therefore, their crankshafts must withstand continuous loads without failure. Developed as a direct replacement for the original equipment part, this model features identical dimensions and superior surface finish precision.
Product Specifications
|
ENGINE NO |
6D31T |
Gross weight(kg) |
50.5 |
|
OEM/PART NO |
ME082505 |
Length(mm) |
923.5 |
|
Crankshaft Material |
Forged steel |
Main journal(mm) |
78 |
|
Engine type |
diesel engine |
Crankpin journal(mm) |
60 |
|
Application |
Kobelco SK200/120 excavators |
Stroke(mm) |
115 |
|
Anti-rusty Coating |
Yes |
Hardness(HRC) |
HRC52-58 |
Performance & Craftsmanship
The strength starts with the forging. High-quality forged steel is shaped under pressure through hammering, forming a dense structure capable of withstanding torque without bending. During subsequent machining processes, the MITSUBISHI 6D31T crankshaft goes through several heat treatments-hardening and tempering-so the surface reaches HRC 52–58 with a 3–5 mm hardened layer. It means the journals resist wear even when engines run day and night.
On the finishing side, each journal is ground and polished repeatedly. This smoothness cuts friction, keeps the oil film steady, and helps bearings last longer.
Before shipment, engineers put the crankshaft on a balance machine. Repeated checks ensure vibration values remain below 10g·cm/kg. Ultrasonic checks are also done to spot any hidden cracks. These steps make sure the crankshaft runs reliably once installed.
Packaging & Delivery
Each MITSUBISHI 6D31T crankshaft is coated with rust-preventive oil, protected with plastic journal caps, and packed in plywood export cases. Stock units are normally shipped within 3–5 working days, while bulk and custom orders follow production scheduling.
FAQ (Answering Common Questions)
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