Powered by compressed air (via a pneumatic hydraulic pump), the tensioning jack precisely and controllably stretches the steel strand anchor cable, generating and maintaining the required preload (typically 180–450 kN).
A built-in tool anchor enables automatic clamping and retraction, improving installation efficiency and underground operation safety, and meeting the explosion-proof and performance standards for mining equipment such as MT/T 972-2006.
Specifically designed for anchor cable support construction in coal mine roadways, it can also be extended to prestressed engineering projects such as tunnels and bridges, but its explosion-proof, lightweight, and moisture-resistant characteristics make it irreplaceable underground.
The core function is "tensioning the anchor cable + locking the anchor + automatic cylinder retraction," ensuring that the anchor cable and surrounding rock work together to prevent roof delamination or collapse.
