Product Catalog 
🔧【Complete Guide】D.I.D Motorcycle Chains｜Structure, Performance & Motorcycle Chain Specifications (Thông số xích xe máy)
D.I.D chains, manufactured by Daido Kogyo Co., Ltd., are globally trusted for their high durability and precision—from daily commuters to MotoGP racing machines.
This article provides a comprehensive breakdown of motorcycle chain components, performance characteristics, motorcycle chain specifications (Thông số xích xe máy), joint types, and common troubleshooting—all optimized for mechanics, riders, and product planners.
1. 🔩 Basic Structure of a Motorcycle Chain
Each chain is composed of six core components:
| Part | Description |
|---|---|
| Pin | Acts as the chain’s bending axis, enduring tensile, shear, and shock loads. |
| Bush | Supports the pin and functions as a bearing, critical for reducing wear. |
| Roller | Engages with the sprocket, absorbing shock and protecting bush/pin. |
| Inner/Outer Plates | Forms the chain’s main structure, transmitting tension. |
| Seal Ring (O-ring/X-ring) | Retains internal grease and prevents abrasion. |
| Grease | Lubricates inner surfaces, minimizes friction, and prevents rust. |
2. 🧪 Key Performance Indicators of a Chain
| Attribute | Explanation |
|---|---|
| Tensile Strength | Maximum load the chain can withstand before breaking—critical during acceleration. |
| Fatigue Strength | Resistance to repeated stress cycles—vital for long-distance and high-speed riding. |
| Wear Resistance | Minimizes elongation due to bush-pin wear, preserving alignment with sprockets. |
3. 📏 Motorcycle Chain Specifications (Thông số xích xe máy)
This table lists standard motorcycle chain specifications used in various engine displacements:
| Chain Type | Pitch (P) | Inner Width (W) | Roller Diameter (D) | Common Usage |
|---|---|---|---|---|
| 415 | 12.7 mm | 4.76 mm | 7.77 mm | Bicycles, mopeds |
| 420 | 12.7 mm | 6.35 mm | 7.77 mm | Underbone motorcycles |
| 428 | 12.7 mm | 7.94 mm | 8.50 mm | 125–250cc motorcycles |
| 520 | 15.875 mm | 6.35 mm | 10.16 mm | Mid-size sport bikes |
| 525 | 15.875 mm | 7.93 mm | 10.16 mm | 400cc+ motorcycles |
| 530 | 15.875 mm | 9.53 mm | 10.16 mm | High-torque applications |
| 630 | 19.05 mm | 11.96 mm | 25.30 mm | Racing, industrial use |
📌 Note: Understanding motorcycle chain specifications helps ensure compatibility, safety, and long service life.
4. 🛡️ X-Ring Technology: Enhanced Sealing and Durability
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X-Ring Seals feature a 4-point contact that retains grease better than traditional O-rings.
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Friction reduced by approx. 50% (compared to O-rings, per D.I.D data).
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Increases overall chain longevity and reduces power loss.
5. ⚙️ Forged Bushings & SDH Pins: D.I.D Proprietary Technology
| Component | Feature |
|---|---|
| Solid Bush | Seamless cold-forged design, superior roundness, better grease retention. Up to 4x durability over curled bushings. |
| SDH (Super Dai Hard) Pin | Coated with ultra-hard compound and embedded carbide particles for maximum wear and oxidation resistance. |
6. 🔗 D.I.D Joint Types Explained
| Joint Type | Features | Use Case |
|---|---|---|
| RJ (Rivet Joint) | Permanent, high-strength joint | Mid-to-large motorcycles, racing |
| FJ (Clip Joint) | Easy to install without special tools | Commuter bikes |
| ZJ (Press-fit Joint) | High precision and reliability | Performance or race bikes |
| LE (Special Spec) | OEM or factory-use only | Pre-assembled or specialized chains |
7. 🚨 Common Chain Problems & How to Fix Them
| Issue | Cause | Solution |
|---|---|---|
| Chain Elongation | Worn bushings or poor lubrication | Lube every 500 km, replace if excessive |
| Noise or Vibration | Misalignment, uneven wear | Check sprocket alignment, lubricate evenly |
| Chain Breakage | Overload, corrosion, debris | Select proper chain size, clean thoroughly |
| Sprocket Jumping | Chain stretch or slack | Maintain correct tension, replace if needed |
🔚 Conclusion: Know Your Motorcycle Chain Specifications (Thông số xích xe máy)
Proper chain selection starts with understanding motorcycle chain specifications, usage environment, and maintenance needs.
D.I.D chains combine high strength, cutting-edge seal technology, and precise engineering—trusted worldwide by professionals and manufacturers alike.
