Zhejiang Weilin Mechanical Co., Ltd. was established in April 2007, It 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. The company covers an area of 30,000.00 square meters. The company produces more than 100 kinds of DCT Forged Steel Crankshaft, which can continuously meet the demand of engine forged steel crankshaft in aftermarket of domestic and abroad, while become a wind vane for aftermarket in China.The products have covered in Europe, America,South Asia, Middle East and other countries, and hot sale in most of provinces in China.

5
national invention patents
20+
years experience
100+
Product category
15
utility models
The company was rated as a national high-tech enterprise in 2011, and has a provincial R&D center, which can achieve synchronous development with customers, from the whole process of design, mold ,forging, heat treatment, machining and test. The company has more than 70 sets of CNC machines, which can provide fast and accurate technical services for customers. The company has been recognized as Zhejiang Science and Technology Enterprise ,Zhejiang Production Clean Enterprise, and Zhejiang Advanced Rule of Law Enterprise.Forged Steel Crankshaft of excavator is listed as the "National Torch Program" and "National Innovation Fund Projects",and etc. The products have obtained 5 national invention patents and 15 utility model patents.
The company adheres to the business philosophy of creating brand with quality, developing with innovation, and benefiting from scale, pursues the corporate spirit of honesty, truth-seeking, pioneering, and innovation, and constantly pursues progress, and strives to create the most complete variety of OEM standard forged steel crankshaft!



Our factory & Equipment



Product Application
We mainly produce more than 100 types of forged steel crankshafts for various fields such as construction machinery, heavy trucks, ships, automobiles, and generator sets.
Production Equipment
CNC Grinder Spindle,CNC Grinder Connecting Rod,CNC Lathe,CNC Engine Lathe ,CNC Crankshaft Milling Machine,Semi-automatic Hardening Machine,CNC Oil Hole Drilling Machine, Horizontal Drilling and Tapping Machine,CNC Keyway Milling Machine,Crankshaft Dynamic Balancing Machine,NDT Machine (Non-Destructive Testing Machine)
Sales market
Our company is recognized as a national high-tech enterprise, and our products cover countries in Europe, America, the Middle East, Southeast Asia and other regions, and sell well in all major provinces and cities in China.
Our Certificate






Our service
Pre-Sale Services
Expert Product Matching
Our technical team, with 10+ years of industry experience, provides one-on-one consultation to match you with the optimal product based on your specific requirements, ensuring you get the perfect fit.
24/7 Technical Support
Have questions about our products or technology? Our expert team is on standby 24/7. Get detailed answers via phone, WeChat, or email – whichever channel suits you best.
Customized Solutions
We offer OEM drawing processing and personalized parameter customization. Receive a tailored solution proposal within 72 hours to meet your unique needs.
After-Sale Services & Support
Our dedicated after-sales service and technical teams are committed to providing you with expert assistance.
1-Year Warranty
Enjoy peace of mind with our one-year warranty. Should your crankshaft fail due to material or manufacturing defects within this period, we provide free repair or replacement
01
Dedicated Account Management
From initial inquiry to post-purchase maintenance, you'll have a dedicated service representative providing personalized, one-on-one support. Your representative is your single point of contact, ensuring prompt response whenever you need assistance.
02
Comprehensive Technical Support
Access our specialized after-sales support hotline staffed by expert technicians. Get professional advice on crankshaft installation, operation, and maintenance, with timely solutions to any issues you encounter.
03
Proactive Recall Policy
Should any widespread quality issue or potential safety hazard be identified in our crankshaft products, we will immediately initiate a recall. We proactively notify affected customers, arrange for product return, and provide free replacement or repair to eliminate risks and ensure user safety.
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