The CAT C6.4 crankshaft (294-1749) is the main rotating component for the C6.4 engine series. Forged from steel, it is built to deliver high strength and long service life under heavy working conditions. This model is widely used in popular CAT equipment, such as 320D/C/D2 excavators and 924K wheel loaders, making it one of the most demanded replacement parts in construction and mining sectors.

Product Specifications

ENGINE NO	C6.4	Gross weight(kg)	64.5
OEM/PART NO	294-1749	Length(mm)	925
Crankshaft Material	Forged steel 40Cr	Main journal(mm)	90
Engine type	diesel engine	Crankpin journal(mm)	65
Application		Stroke(mm)	130
Anti-rusty Coating	Yes	Hardness(HRC)	HRC52-58

Product Features

Forged Construction – Unlike cast iron, forged steel gives higher tensile strength and better fatigue resistance, suitable for long-term heavy-duty use.
Improved Surface Hardness – Induction hardened layer (about 3–5 mm) ensures wear resistance and consistent performance.
Accurate Machining – Journals are ground to tight tolerances to reduce friction and oil consumption.
Balanced for Smooth Running – Each unit goes through dynamic balancing to lower vibration and noise in operation.
OEM-Compatible – Matches dimensions and fits as a direct replacement for the original CAT crankshaft.

Manufacturing & Testing

Every 294-1749 crankshaft goes through:

Closed-die forging to refine grain structure
Heat treatment and tempering for toughness
Induction hardening for wear resistance
Precision grinding of main and pin journals
Ultrasonic, magnetic, and dimensional inspections

We also carry out dynamic balance tests and provide third-party reports when required.

294-1749 ISO certification

Applications

Compatible models for 294-1749 crankshaft：

CAT Excavators: 320D, 320C, 320D2
CAT Wheel Loaders: 924K
Other C6.4 series equipment in mining, construction, and industrial power applications

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Packaging & Shipping

Packed in plywood or raw wood, with anti-rust oil coating and protective plastic caps.
Stock models can usually be shipped within 2–3 days, while custom orders follow the agreed lead time.

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FAQ (Answering Common Questions)

Q: Is this crankshaft identical to the CAT OEM part 294-1749?

A: Yes, it follows the same specifications as the OEM design, allowing direct replacement without modification.

Q: Do you provide a warranty?

A: We offer a 12-month warranty. If there are defects caused by material or process, we will replace it free of charge.

Q: Can I order only a few pieces, or is there a minimum?

A: We accept small trial orders, though bulk purchasing is recommended for better cost efficiency.

Q: How can I be sure the mass order matches the sample?

A: All production is controlled under ISO 9001, and both sample and bulk orders are made on the same line with full inspection records.

Q: What coating options are available for rust protection?

A: Standard anti-rust oil is applied, especially for humid or long-sea-shipment conditions.

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