Mining Expansion Shell Anchor Bolt

As the professional manufacture, we would like to provide you Mining Expansion Shell Anchor Bolt. Rock bolt, in tunneling and underground mining, steel rod inserted in a hole drilled into the roof or walls of a rock formation to provide support to the roof or sides of the cavity. Rock bolt reinforcement can be used in any excavation geometry, is simple and quick to apply, and is relatively inexpensive. The installation can be fully mechanized. The length of the bolts and their spacing can be varied, depending on the reinforcement requirements.

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Product Description

There are three major ways of anchoring the rock bolts: mechanical, grouted, and friction. The most common form of mechanically anchored rock bolt uses an expansion shell. A wedge attached to the bolt shank is pulled into a conical expansion shell as the bolt is rotated. This forces the shell to expand against the wall of the borehole. The two mechanisms by which the shell is anchored against the borehole wall are friction and interlock. A preload can be applied to the rock surface by tensioning the bolt with an attached hanger or face plate, which are designed to distribute the load uniformly onto the surrounding rock.

Product Name	Mining Expansion Shell Anchor Bolt
Type (Size)	32mm, 35mm, 38mm, 42mm, 48mm
Material	Cast Iron for anchor nut, Cold Steel for Leaves, Q235 for bracket
Finish	Sand Blasting
weight	0.3-0.6KG etc.

Production Process

Machining Workshop

We have full set line of machining facilities, various CNC equipment and Machining Center can meet customers’ requirements. After machining, the casting parts will be completed. Then, they will be inspected and packed for delivery and shipment.

Quality Control

Checking the raw material after they reach our factory------- Incoming quality control

Checking the details before the production line operated

Have full inspection and routing inspection during mass production---In process quality control

Checking the goods after they are finished---- Final quality control

Checking the goods after they are finished-----Outgoing quality control

Packing and Delivery

Packaging of Mining Expansion Shell Anchor Bolt can be customized based on customer requirements to meet the different needs, such as plastic bag, carton box, wooden case, crate, etc.