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Power Tools Direct£57.94Visit shop Sealey Ak3857 Ratchet Crimping Tool Interchangeable Jaws
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B&Q£60.93Visit shop - Sealey Ratchet Crimping Tool Interchangeable Jaws Ak3857
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The Sealey AK3857 is a professional-grade manual crimping tool designed for automotive technicians and electricians who require consistent, high-quality terminal connections. Its key strength lies in its versatile, quick-change hardened steel jaw system that accommodates a wide range of terminal sizes, though its weight and size may feel cumbersome for hobbyists working in extremely tight spaces.
| Model Part Number | AK3857 |
|---|---|
| Brand | Sealey |
The Sealey AK3857 comes with a manufacturer's lifetime guarantee.
Yes, it supports non-insulated terminal sizes of 1.5, 2.5, 6, and 10mm2.
Yes, the jaws are designed to crimp standard insulated terminals, which includes most heat-shrink varieties.
Yes, the tool comes with the necessary quick-change, hardened, and tempered jaws.
The ratchet is factory-set to ensure a consistent, professional-grade crimp and typically does not require user adjustment.
Check the ratchet release lever. If it is jammed, ensure no wire debris is caught in the jaw mechanism and manually trigger the release.
Ensure you are using the correct jaw size for the terminal and wire gauge specified, and ensure the terminal is fully inserted into the crimp nest.
Clean the jaw housing of any grit or accumulated dirt and ensure the tool is in the fully open position before attempting to swap the inserts.
To change the jaws, slide the existing inserts out of the head assembly and click the new set into place, ensuring they are fully seated. The tool is compatible with both insulated terminals (0.5-1, 1.5-2.5, and 4-6mm2) and non-insulated terminals (1.5, 2.5, 6, and 10mm2).
To maintain the tool, keep the ratchet mechanism clean and free of wire debris or metal shavings. A light application of machine oil to the pivot points every few months will ensure the action remains smooth. Since this is an all-steel tool, wipe down the exterior after use to prevent corrosion if working in damp conditions.
