DIN 763 Long Link Chain – A Complete Guide
1. What is DIN 763 Long Link Chain?
DIN 763 is a German industrial standard that specifies round steel link chains with a long link design. The key feature is that the inner length (a) is significantly larger than the inner width (b) – typically 3 times or more. This gives the chain a stretched appearance, making it easy to hook, loop, or wrap around objects.
Unlike high-grade lifting chains (such as G80 china ), DIN 763 long chains are designed for medium-duty applications where cost-effectiveness and flexibility are more important than maximum breaking strength.
2. Technical Specifications
DIN 763 long chains are manufactured with medium tolerance. The table below shows the standard dimensions:
Note: The dimensions above follow the DIN 763 standard. Custom dimensions may be available upon request.
3. Available Materials
We manufacture DIN 763 long link chains using high-quality alloy steel, which offers an excellent balance of strength, ductility, and wear resistance. Depending on your specific application requirements, we can recommend the most suitable alloy steel grade.
4. Surface Finishing Options
5. Typical Applications
The long link design (inner length ≥ 3× inner width) makes DIN 763 the right choice for several specific jobs where a short link chain would be inconvenient.
Application 1: Hooking and Looping
The long opening makes it easy to pass a hook, strap, or another chain through. This allows quick and secure attachment anywhere along the chain. Typical uses: towing straps, winch extensions, safety barriers, adjustable slings.
Application 2: Wrapping Around Oddly Shaped Loads
A long link chain lies flatter and conforms more easily around irregular surfaces such as logs, pipes, or machinery parts. This means better contact and more secure tie-down.
Application 3: Agricultural and Rural Use
Farms need versatile, cost-effective chains that are easy to use with gloves or in low-light conditions. The large links are easy to see and handle. Typical uses: towing farm machinery, anchoring animal housing, repairing fences, hanging gates.
Application 4: Conveyor and Drive Systems (Slow Speed)
The long link design creates a natural pocket that can engage with larger sprockets or drive pins. It is suitable for slow-speed, low-precision conveying where a heavy-duty short link chain would be over-engineered.
Application 5: Marine and Harsh Environments
The open design is less likely to trap sand and salt compared to short link chains. When combined with zinc-plated or painted finish, it provides decent corrosion resistance for freshwater or light saltwater use.
Key takeaway: Do not choose DIN 763 for high-precision overhead lifting. Choose DIN 763 when you need a flexible, easy-to-handle, cost-effective chain for general securing, wrapping, and pulling.
6. DIN 763 vs Other Chain Standards
7. Quality Control and Testing
All our DIN 763 long link chains are manufactured under strict quality control, including:
- Dimensional inspection to ensure compliance with DIN 763
- Proof load testing on each batch
- Material certificate available upon request
- Surface finish inspection
8. Frequently Asked Questions
Q1: What is the difference between DIN 763 and DIN 5685?
DIN 763 has longer links, making it easier to hook or wrap. DIN 5685 has shorter links, making it better for overhead lifting and sprocket drives.
Q2: Can I use DIN 763 chain for overhead lifting?
Only for non-critical, low-risk applications. For safety-critical overhead lifting, we recommend DIN 5685 or G80. Always consult local safety regulations.
Q3: What diameters do you offer?
We offer DIN 763 chains from 8 mm to 32 mm nominal diameter. Other sizes may be available upon request.
Q4: What materials are available?
We supply DIN 763 chains in high-quality alloy steel. We can also use CM490 or stainless steel according to customer requirements.
Q5: What is the MOQ and lead time?
We have no minimum order quantity (no MOQ). We serve small and medium enterprises through SMEOCEAN. Whether you need a sample length or a bulk order, we can accommodate. Lead time is negotiable based on your requirement.
9. Get a Quote
If you are looking for a reliable supplier of DIN 763 long link chains with diameters from 8 mm to 32 mm, high-quality alloy steel, and competitive pricing, please contact us.
We can provide:
- Standard DIN 763 chains in stock or short lead time
- Custom dimensions and surface finishes
- Test reports and material certificates
- No MOQ – samples welcome
Contact us today for a fast quote.
More Links:
Why Qingdao is the Production Base of Load Binder?
G80 VS. G70 Chain: Key Differences in Lifting & Transport Chains
How is the Surface of the Anchor Chain Treated?