Name: China Crankshaft for Komatsu S6d155 Manufacturers Suppliers Factory - Customized Service - Weilin Mechanical
Brand: Weilin
SKU: 284610843

The KOMATSU S6D155 crankshaft (Part No. 6127-31-1012) 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.

Product Specifications

ENGINE NO	S6D155	Gross weight(kg)	255.2
OEM/PART NO	6127-31-1012	Length(mm)	1658
Crankshaft Material	Forged steel 40Cr	Main journal(mm)	124.94
Engine type	diesel engine	Crankpin journal(mm)	101.94
Application	PC400,D155	Stroke(mm)	170
Anti-rusty Coating	Yes	Hardness(HRC)	HRC52-58

Product Advantages

(1)Material Advantage: Forged Steel--40Cr
Data Comparison:Forged Steel vs. Cast Iron

Index	Our Forged Steel Crankshaft	Market Cast Iron Crankshaft	Customer Value
Tensile Strength	≥1000MPa	≤785MPa	Suitable for high-load conditions
Wear Life	3-5 years (heavy load)	1-2 years	Reduces maintenance costs
Low-Temp Toughness	AKV≥25J (-40℃)	AKV≤12J	Adapts to extreme climates (Russia, etc.)

(2)Medium Frequency Quenching (Heat Treatment)

KOMATSU S6D155 crankshaft is treated with medium-frequency quenching and tempering, leaving quenching marks on the surface.The quenching layer depth is 3–5 mm, with a hardness of HRC52–58.

(3)Advanced equipment
The crankshaft is precisely machined using CNC equipment to ensure that dimensional tolerances strictly meet the technical standards of the engine. The main journals and connecting rod journals undergo multiple stages of fine machining and surface hardening treatments, which not only improve surface finish and balance but also significantly enhance wear resistance and extend service life.

S6D155 crankshaft ISO certification

Factory Strength

1. We are a professional manufacturer: With 18 years of experience in the production of forged steel crankshafts, our products have been widely popular in Southeast Asia, the Middle East, and other regions over the years.

2. Balancing quality and price: Our team possesses professional technical knowledge and management experience. The company is equipped with advanced CNC facilities for the production of forged steel crankshafts. With a comprehensive quality management system and high-quality products, we are able to maintain competitive pricing.

3. Our factory is equipped with advanced CNC equipment for producing forged steel crankshafts to ensure that every Komatsu S6D155 crankshaft meets the required standards.

Production Application

Compatible models for KOMATSU S6D155 crankshaft：

Excavator：PC400,PC450-7

Bulldozer：D155

product-1460-234

Product packaging

For KOMATSU S6D155 crankshaft, we offer our customers a choice of different types of packaging boxes: plywood and raw wood.

product-1-1

FAQ (Answering Common Questions)

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.