ROUND LINK CHAIN
Precision-engineered round link chains specifically designed for bucket elevators & chain conveyor operating in abrasive, high-load, and high-temperature environments typical of cement, mining, and power industries.
Built to DIN 764, DIN 766, and customer-specific configurations, our case-hardened chains offer exceptional mechanical performance, longevity, and reliability in demanding vertical conveying applications.
Technical Highlights & Construction Features
| Feature | Technical Detail |
| Chain Profile | Fully round cross-section forged from fine-grain alloy steel; ensures uniform load transfer and eliminates sharp corners that cause stress risers |
| Link Welding | Precision flash butt-welded and 100% crack-tested; each weld is proof-loaded and normalized to relieve residual stress |
| Heat Treatment | Core hardened and surface tempered (carburized or quenched & tempered); typical hardness range: 38–45 HRC for high wear resistance |
| Pitch Accuracy | Tight pitch tolerances (±0.2 mm) for smooth meshing with drive and idler sprockets; minimizes chain jump and uneven tensioning |
| Elongation Control | Controlled pre-stretching during manufacturing limits initial wear-related elongation in service |
| Proof Load & Breaking Load | Every batch proof-tested to 2× working load; breaking strength up to 3.5× rated load depending on chain size and grade |
Application Advantages in Bucket Elevators & chain conveyor
- True round profile ensures continuous contact with sprockets and reduces point loading
- Shock-resistant design handles impulse loads from heavy buckets and abrupt starts
- Low wear rate extends service intervals and reduces unplanned shutdowns
- Easy integration with DIN-compliant sprockets, shackles, and buckets
- Self-cleaning geometry minimizes buildup of fine or sticky materials
- Suitable for conveying hot, coarse, or highly abrasive materials such as clinker, coal, slag, limestone, and raw meal
Why Choose Constromech Chains?
Constromech is not just a supplier — we’re your engineering partner in elevating performance:
- Custom Solutions
- Tailor-made chains for non-standard pitches, high-lift elevators, or corrosive atmospheres
- Available in grades up to G100 and boron-alloy steels for superior fatigue strength
- OEM Compatibility
- Full backward compatibility with existing OEM or similar installations
- Chains optimized to match your drive sprocket geometry, bucket pitch, and shackle design
- In-House Quality Control
- All chains undergo NDT, load testing, hardness verification, and dimensional inspection
- Delivered with material certificates, QA reports, and traceability records
- Inventory & Turnaround
- Standard DIN sizes always in stock (10×28 up to 38×144 mm)
- Custom chains delivered within 2–4 weeks including heat treatment and proof testing
- End-to-End Support
- Assistance in chain selection, drive redesign, wear analysis, and service life prediction
- Available with welded attachments, pin-type bucket connectors, or adapter links
Industries Served
- Cement & Clinker Plants
- Thermal Power Stations
- Fertilizer & Chemical Plants
- Steel & Foundry Units
- Mining & Quarry Operations
Let Constromech engineer your next upgrade.
Whether you’re modernizing a 60-meter clinker elevator or replacing worn-out chains in a fly-ash elevator, we provide precision-built chains that deliver maximum uptime, optimal wear life, and seamless integration into your material handling system.
Tailor-made sizes as per client specifications and drawings are available
| Chain Size (mm) | Inside Width (m1) mm | Outside Width (m2) mm | DIN Chain |
| 10×28 | 12 | 36 | 766 |
| 10×35 | 14 | 36 | 764 |
| 13×45 | 18 | 47 | 764 |
| 14×50 | 16.3 | 47 | ND |
| 16×45 | 19.2 | 58 | 766 |
| 16×56 | 22 | 58 | 764 |
| 18×50 | 21.6 | 65 | 766 |
| 18×63 | 24 | 65 | 764 |
| 19×75 | 22 | 63 | ND |
| 20×56 | 24 | 72 | 766 |
| 20×70 | 27 | 72 | 764 |
| 22×86 | 26 | 74 | ND |
| 23×64 | 27.6 | 83 | 766 |
| 23×80 | 31.6 | 83 | 764 |
| 26×73 | 31.2 | 94 | 766 |
| 26×91 | 35 | 94 | 766 |
Table – Dimensions and qualities
| Chain Size (mm) | Inside Width (m1) mm | Outside Width (m2) mm | DIN Chain |
| 26×100 | 31 | 87 | ND |
| 28×78 | 33.6 | 101 | 766 |
| 28×98 | 36 | 101 | 764 |
| 30×84 | 36 | 108 | 766 |
| 30×105 | 39 | 108 | 764 |
| 30×120 | 36 | 102 | ND |
| 33×92 | 43 | 119 | 766 |
| 33×115 | 43 | 119 | 764 |
| 34×136 | 39 | 113 | ND |
| 36×101 | 43.2 | 130 | 766 |
| 36×126 | 47 | 130 | 764 |
| 38×144 | 44 | 127 | ND |
| 39×109 | 51 | 140 | 766 |
| 39×136 | 51 | 140 | 764 |
| 42×118 | 50 | 151 | 766 |
| 42×147 | 55 | 151 | 764 |
ND= non-DIN, d = diameter, p = pitch,