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A compressed coil spring holds a great deal of energy and releases it instantly if a compressor slips. That is why capacity on the clamp sets is quoted per pair and why the jaws have to sit on enough coils to hold the spring squarely rather than gripping two turns at one side.
Capacity across the manual clamps runs 850kg on a single 350mm compressor and 1200kg and 2500kg per pair on the heavy duty sets. Jaw length follows, at 250mm and 350mm, and the longer jaw spans more coils on a long spring where a short jaw would only reach part of it. Draper hold pairs at 250mm and sets of two and three pieces across the same span.
Safety hooks are worth looking for on a clamp set. A hook closes round the coil so the jaw cannot walk off it under load, which is the failure that lets a spring go. The Sealey 3 piece set carries them. Sealey run the AK384 ladder through the manual clamps with the hooked set at the top of it.
Hydraulic and pneumatic compressors take the operator out of the loading path entirely, and a workstation at 1600 x 520 x 300mm holds the strut in a frame while it is compressed. A universal top plate adapts the frame to different strut tops. Send the strut and spring detail to 07754288583 on WhatsApp if you are unsure of the span. SIP hold a pneumatic compressor and a top plate alongside the Sykes workstation.
| ITEM NO | 03638 |
|---|---|
| Max. Compression | 1000kg (2204lb) |
| Spring Size Range | Min. Ø 4" (101mm) / Max. Ø 10" (254mm) |
| Working Length | 480mm |
| Ram Travel | 325mm |
| ITEM NO | 03663 |
|---|---|
| Suitable For | 03657 / 03659 / 03661 |
| Kit Contents | Universal Top Plate x1 / Retaining Springs x2 / Securing Screws x4 / Securing Pins x4 |
| ITEM NO | 03661 |
|---|---|
| Max. Compression | 2400kg (5291lb) |
| Air Inlet Pressure | 73psi (5bar) - 145psi (10bar) |
| Air Inlet | 1/4" BSP (Female) |
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