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Komatsu Crankshaft

Your Professional Komatsu Crankshaft Supplier

 

Our goal is to become your true partner in the field of Komatsu crankshaft China. Zhejiang Weilin Mechanical Co., Ltd. is a national high-tech enterprise focusing on the production and trade Forged Steel Crankshaft in the field of Construction Machinery, Heavy Trucks, Marine, Generator Sets, Agricultural Machines, Automobiles, Diesel Engines, and etc. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

 

 
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Why Choose Us
 

Production Equipment: Our company possesses advanced production equipment, such as CNC grinding machine spindles, CNC grinding machine connecting rods, CNC lathes, CNC engine lathes, CNC crankshaft milling machines, semi-automatic quenching machines, CNC oil hole drilling machines, horizontal drilling and tapping machines, CNC keyway milling machines, crankshaft dynamic balancing machines, and non-destructive testing machines.

 

Production Market: Our products are well-received in the market and are exported to Europe, America, the Middle East, Southeast Asia, and other countries and regions.

 

Customized Solutions: We provide OEM drawing processing and personalized parameter customization services. You can receive a tailor-made solution within 72 hours to meet your unique needs.

 

Our Services: Our professional after-sales service and technical team is dedicated to providing you with professional assistance. We offer a one-year warranty for your peace of mind. If your crankshaft fails during this period due to material or manufacturing defects, we will provide free repair or replacement services.

 

Advantages of Komatsu Crankshaft

 

Smooth operation

High-quality balancing ensures even, smooth rotation and efficient power transmission.

01

Versatility

Can handle complex machining (pin journals, counterweights) and supports wide ranges of processing.

02

Robust design

Sufficient strength and rigidity to resist bending and torsion under heavy loads, with large, wear-resistant bearing surfaces.

03

Advanced technology

Uses cnc lathes, automatic grinding, and balancing machines for precise dimensions and finish.

04

High rigidity

Features like internal blade cutters and fixed chuck systems minimize vibration and maximize support rigidity.

05

 

Specification of Komatsu Crankshaft

 

ENGINE NO

S6D140E-5

OEM/PART NO

6261-31-1200

Crankshaft Material

Forged steel 40Cr

Engine type

Diesel engine

Application

PC850-8

Anti-rusty Coating

Yes

 

Features of Komatsu Crankshaft

 

The KOMATSU crankshaft is a high-performance replacement part specifically designed for heavy-duty engine repairs. This forged steel crankshaft is made from 40Cr alloy steel and offers 27.9% higher tensile strength compared to traditional cast iron crankshafts, ensuring exceptional durability under high-load conditions.

 

A precision induction hardening process creates a 3–5 mm hardened layer with a surface hardness of HRC 52–58, enhancing wear resistance by 15% over nitrided cast iron alternatives. It is an ideal choice for maintaining engine performance and reliability in demanding work environments.

 

Application of Komatsu Crankshaft

 
 
01
 

Motion conversion

The main application is to convert the reciprocating (up-and-down) motion of the pistons into the rotary (circular) motion needed to drive the machinery.

 
02
 

Power transmission

This rotational motion is what ultimately turns the wheels and allows the equipment to move and operate.

 
03
 

Diesel engines

They are crucial components in many of Komatsu's diesel engines, used in everything from construction equipment to other industrial applications.

Crankshaft for Komatsu S4d102
Components of Komatsu Crankshaft

 

Crankpin: Hold the heads of the connecting rod.
Arm: Component that joins the axis and the crankpin.
Counterweights and flywheels: Help reduce irregularities caused by the movement of the axis.
Supports: That support the crankshaft to the engine.

 

Packing and Shipping of Komatsu Crankshaft

 

Packing

Standard export plywood or raw wood, anti-rust coating, and plastic protection caps.(Plywood is used by default. raw wood is available at an additional cost.)

Shipping

Sea freight as standard

 

Certificate

 

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FAQ

 

Q: Are the products in stock?

A: Yes, we have 4000+ finished products (popular models in stock) and 6000+ semi-finished products Lean Manufacturing schedules production on demand, balancing inventory and capacity.

Q: What is the delivery time?

A: Generally, we can deliver in a week if we have stock. Without stock it will take 1-2 months. However, the exact delivery time may vary from order to order or from time to time.

Q: Can I order different models in one order?

A: Yes, but not less than 5 pieces per model.

Q: How does your factory perform quality control?

A: Our products are made with a full process of quality control, and key indicators have third-party test reports.

Q: What are your warranty terms?

A: 1 year warranty (free replacement for material/workmanship problems), exclusive customer service to follow up the whole process. If general problems are found, free replacement and elimination of risk.

We're well-known as one of the most reliable komatsu crankshaft manufacturers and suppliers in China. Please feel free to wholesale high quality komatsu crankshaft made in China here from our factory. We also accept customized orders.

6162 33 1201|crankshaft for Komatsu S6d170-1/ 2|pc1000, 6735 01 1310, 6754 01 1310