Chain Clamping Set - 12700
What is...
Features
Our comprehensive range of clamping elements includes a compact and powerful workpiece clamping element; the Chain Clamping set no. CL2502. This set was specifically designed for clamping large workpieces with round or arched surfaces.
Due to an increase in the bearing surface of the chain, the clamping force is distributed more evenly across the workpiece thereby reducing deformation. The Chain Set can also be used for clamping of 'filigree' workpieces of component parts.
Installation
Setting up
1. Attach the hook unit and the take-up unit as close to the workpiece as possible.
2. Turn the knurled nut on the take-up unit until the pull rod is fully extended. Select the number of chain segments required for the workpiece and attach to the pull rod.
3. Fine adjustment of the chain lengths is made by tightening the knurled nut until the chain slightly touches the workpiece.
4. To clamp the workpiece, connect the free end of the chain onto the hook unit. Using a hex key, tighten the eccentric shaft and ensure the lever is rotated to its fully locked position (180°). The workpiece is now clamped.
Technical Specs
Important factors in selection of Chain Clamp
Chain length and stretch
The clamping force achievable through the Hillcliff Chain Clamp set is dependent upon three factors:
- Workpiece diameter (see graph).
- Chain length and stretch (see graph).
- Contact angle of chain and workpiece (see table below right).
Torque value of 50Nm is used for M12 set. Torque value of 90Nm is used for M16 set.
Table of clamping force to contact angle α
| Torque | α = 105o | α = 120o | α = 135o | α = 150o | α = 180o | |
| M12 | 50Nm | 80% | 87% | 92% | 97% | 100% |
| M16 | 90Nm | 80% | 87% | 92% | 97% | 100% |
Important note: Achievable clamping force is reduced as the contact angle of chain and workpiece (α) reduces. Please use the table above as a guide.
