Chain & Bucket Attachment (Shackles)
Precision-forged chain shackles to DIN 745 and DIN 5699 — the critical link between chain and bucket in heavy-duty chain bucket elevators.
- DIN 745
- DIN 5699
- Drop-forged
- 19 standard sizes
- Made to your drawing
Dimensions
Find your size
Choose the type, then pick a size to see its dimensions, then request a quote for exactly that size.
Selected — DIN 745 shackle
45
- v (mm)
- 20
- u (mm)
- 73
- u1 (mm)
- 115
- u2 (mm)
- 14
- u4 (mm)
- 125
- X
- M 10
- h (mm)
- 40
- y (mm)
- 25
- Distance y1 (mm)
- 75
- u (mm)
- 30
- o (mm)
- 5
Size not listed? We manufacture to your drawing or sample —send us your requirement.
View all 9 sizes (full table)
| w (mm) | v (mm) | u (mm) | u1 (mm) | u2 (mm) | u4 (mm) | X | h (mm) | y (mm) | Distance y1 (mm) | u (mm) | o (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 45 | 20 | 73 | 115 | 14 | 125 | M 10 | 40 | 25 | 75 | 30 | 5 |
| 56 | 25 | 92 | 15 | 18 | 165 | M 12 | 50 | 32 | 95 | 40 | 6 |
| 63 | 30 | 105 | 18 | 21 | 20 | M 16 | 60 | 40 | 110 | 40 | 6 |
| 70 | 34 | 116 | 20 | 23 | 23 | M 20 | 68 | 45 | 120 | 50 | 6 |
| 80 | 37 | 132 | 23 | 26 | 25 | M 20 | 74 | 45 | 130 | 50 | 6 |
| 91 | 43 | 149 | 26 | 29 | 29 | M 24 | 86 | 55 | 150 | 60 | 8 |
| 105 | 50 | 173 | 30 | 34 | 31 | M 24 | 100 | 55 | 165 | 60 | 8 |
| 126 | 59 | 206 | 36 | 40 | 37 | M 30 | 118 | 70 | 200 | 70 | 10 |
| 147 | 68 | 239 | 42 | 46 | 42 | M 30 | 136 | 70 | 230 | 80 | 12 |
Selected — DIN 5699 shackle
35
- r (mm)
- 8
- u1 (mm)
- 59
- u2 (mm)
- 11
- s1 (mm)
- 10
- s2 (mm)
- 12
- X
- M10
- h1 (mm)
- 23
- h3 (mm)
- 43
- y (mm)
- 25
- Distance Plate y1 (mm)
- 65
- Distance Plate u (mm)
- 30
- Distance Plate o (mm)
- 5
Size not listed? We manufacture to your drawing or sample —send us your requirement.
View all 10 sizes (full table)
| w (mm) | r (mm) | u1 (mm) | u2 (mm) | s1 (mm) | s2 (mm) | X | h1 (mm) | h3 (mm) | y (mm) | Distance Plate y1 (mm) | Distance Plate u (mm) | Distance Plate o (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35 | 8 | 59 | 11 | 10 | 12 | M10 | 23 | 43 | 25 | 65 | 30 | 5 |
| 45 | 8 | 75 | 13 | 13 | 15 | M12 | 28 | 53 | 30 | 75 | 30 | 5 |
| 56 | 10 | 92 | 17 | 16 | 18 | M14 | 34 | 64 | 35 | 95 | 40 | 6 |
| 63 | 10 | 105 | 20 | 18 | 21 | M16 | 37 | 71 | 40 | 110 | 40 | 6 |
| 70 | 12 | 116 | 23 | 20 | 23 | M20 | 42 | 80 | 45 | 120 | 50 | 6 |
| 80 | 12 | 132 | 25 | 23 | 26 | M20 | 47 | 89 | 45 | 130 | 50 | 6 |
| 91 | 14 | 149 | 29 | 26 | 29 | M24 | 52 | 99 | 55 | 150 | 60 | 8 |
| 105 | 14 | 173 | 31 | 30 | 34 | M24 | 60 | 114 | 55 | 165 | 60 | 8 |
| 126 | 18 | 206 | 37 | 36 | 40 | M30 | 71 | 134 | 65 | 200 | 70 | 10 |
| 147 | 22 | 241 | 42 | 42 | 47 | M36 | 81 | 157 | 75 | 230 | 80 | 12 |
DIN 745
Description: U-type forged shackles with threaded pin and nut assembly
Application Focus: General-purpose, high-load central chain elevators
DIN 5699
Description: Flat-profile shackles with compact geometry and low clearance
Application Focus: Tight bucket spacing and reduced PCD elevators
Technical Features
Body
Drop-forged alloy steel, normalized and surface cleaned; high fatigue resistance under tensile and impact loads
Cross Pin
Heat-treated steel bolt, precision-ground and matched to bore for even stress transfer
Nut & Locking
Hex nut with spring washer or locking plate as per DIN standards; resists vibration loosening
Mounting Geometry
Designed to match the chain’s inside link width and pitch spacing for snug and aligned bucket attachment
Surface Protection
Supplied with anti-corrosion coating or hot-dip galvanized upon request for harsh environments
Assembly & Spare Parts Supplied
Constromech provides complete shackle kits with:
- Forged shackle body
- Cross bolt/pin with matching hardness
- Nut and washer/locking plate
- Optional adapter plates for custom bucket interfaces
- Shims and spacers for field alignment corrections
- Full dimensional traceability and serial tagging
Operational Advantages
- Reliable Load Transfer
Optimized U or flat geometry maintains uniform stress distribution across chain links and bucket plates. - Reduced Downtime
Through-hardened pins and precision-machined bores reduce wear, elongation, and lateral play. - Extended Service Life
Self-locking assemblies withstand constant vibration and temperature cycles, reducing the risk of loosening. - Energy Efficiency
Compatible with various bucket geometries, adapter plates, and chain sizes from 10 × 28 mm to 38 × 144 mm. - Predictive-Maintenance Friendly
Modular and standardized design allows fast swap-out during shutdowns with basic tools.
Why Constromech Shackles?
Forging & machining
Full control over material traceability, heat treatment, and dimensional accuracy
Custom Configurations
Special widths, bolt lengths, or pin diameters available on request
OEM Compatibility
100% match with standard DIN 764/766 round link chains and all leading bucket profiles
Ready Stock
Fast delivery on common sizes; expedited manufacturing for shutdown replacements
Engineering Support
Technical drawings, torque specs, and on-site guidance for critical applications
Use Cases
- Clinker and slag elevators in cement and steel plants
- Raw material and limestone elevators in mining and crushing plants
- Fly ash and coal handling systems in thermal power stations
- Bulk storage and reclaim applications in ports and terminals
Fit. Lock. Elevate.
Shackles are built to handle the toughest conveying environments — with reliability, precision, and longevity engineered into every piece. Whether you’re installing a new elevator line or retrofitting an aging one, we deliver plug-and-play shackle solutions that exceed DIN standards.
Other Round Link Chain Elevator components
Round Link Chain
32 sizesPrecision-engineered round link chains for bucket elevators and chain conveyors in abrasive, high-load and high-temperature duty — built to DIN 764, DIN 766 and customer-specific configurations.
View sizes & details
Sprocket & Shaft Assembly
55 sizesComplete, ready-to-install drive and tail sprocket assemblies for chain bucket elevators and chain conveyors — machined, balanced and test-mounted so your crew can fit, torque and run.
View sizes & details
Elevator Buckets
48 sizesRugged fabricated buckets in high-tensile steel for chain and belt bucket elevators, precision-formed for uniform material discharge.
View sizes & details
Boot Bearing
6 sizesBoot bearing assemblies that support and guide the boot shaft in chain and belt bucket elevators — ready-to-fit bearing blocks with matching bushes.
View sizes & details
Wheel Rim & Shaft Assembly
34 sizesFit-and-run wheel-rim and shaft packages for chain bucket elevators. Toothless pocket wheels with modular steel segments cradle each link to cut point wear, shock loading and noise.
View sizes & detailsNeed chain & bucket attachment (shackles) for your plant?
Send us your drawing or requirement — we respond within one business day.