Levers: sheet steel; axial bolts: stainless steel
Levers: galvanised, ratchet-pneumatic cylinder, double-acting, anodized;
clamp galvanised and passivated; complete with hardened, galvanised and passivated press-on bolt and protective cap
Compared to hand clamps, pneumatic clamps have the following advantages: The operator is relieved of frequent clamping. Several clamps can be activated at the same time and can be closed in a specific sequence.
Single or multiple clamps can be activated from varying positions by machine control or hand control.
As a result of the knee-operated lever system:
- the clamp remains closed if the air supply fails.
- the compressed air consumption is low as a result of the large end transfer.
- pivoting the clamping arm achieves a large opening travel.
- optimum force and movement ratios are achieved.
VL = compressed air consumption per complete cycle in dm≥ at 6 bar.
To select the correct size of clamp in the case of pneumatic clamps, the possible clamping force at 6 bar (any compressed media are permissible, maximum pressure 10 bar), is specified besides the bracing force. F3 is the possible clamping force that the clamp exerts on the end of the clamping arm, F4 the force it exerts on the fulcrum side.
The piping diagram for the simplest control of one or several pneumatic clamps is shown adjacent. When constructing complete switching systems consult the well-known manufacturers of pneumatic valves, who also supply all the required connectors and fittings.
The forces F1 and F2 specified in the table are holding forces; F3 and F4 are clamping forces.