Swellex Hydraulic Bolt

Swellex Hydraulic Bolt

Swellex Hydraulic Bolt also known as hydraulic expansion anchor bolts, are double-layer tubular bolts made from seamless steel pipes with an outer diameter larger than the anchor hole diameter. After the steel pipe is placed into the anchor bolt hole, high-pressure water is used to make it expand. During the expansion process, the Swellex Hydraulic Bolt deforms, and the wall of the anchor bolt pipe completely adheres to the irregular hole wall of the anchor bolt hole. The frictional force and self-locking force generated along the entire length of the anchor bolt thereby reinforce the rock mass. It has the advantages of simple construction, full-length anchoring and strong anchoring force. It is widely applied in mine roof support, various tunnel support, open-pit coal mine and highway slope support, etc., and the support effect is very good.

Swellex Hydraulic Bolt Key Features

Installation is rapid and effortless

No resin or grout is necessary

Remains stable despite blasting vibrations and varying rock strengths

Boasts an extensive expansion range, ensuring even load distribution along the hole

Delivers immediate structural support

Two designs of Swellex Hydraulic Bolt

> Swellex Hydraulic Bolt

> New improved Bolt with non-return valve which limits "spring-back" giving increased pull-out resistance and keeps high strength expansion.

> Swellex Hydraulic Bolt Accessories

Domed plate or Star plate.

> Swellex Hydraulic Bolt Length

Length: 0.9m to 3.0m or as requested.

> Surface: Black / Plastic coated / Thermal Diffused or as requested.