33mm Split Set Friction Rock Bolts for Mining Support

Product Description:

Friction bolts have been used internationally in mining for decades and are considered the simplest form of ground support available in metal mining. Compression of the high tensile steel "C" shape into a hole diameter smaller than the tube generates a load transfer from the steel to the rock. A steel ring is fixed to the collar end of the tube that will retain a plate on the installed tube to establish compressive force against rock.

Available in either black or hot dip galvanised. Variety of diameters (34 mm, 40 mm and 47 mm) and various lengths from 600 mm to 3,000 mm

Used in the development and production headings for immediate support with quick and easy installation.

Product Installation

1.Drill holes according to specifications: Use a rock drill to drill holes in the ceiling or walls. The diameter of the hole will be slightly smaller than the diameter of the bolt.

2.Pay attention to keeping clean: Compressed air is recommended to clean the holes and remove dust and loose particles.

3.Insert the bolts: Insert the split friction bolt into the hole that exactly lines up with it, making sure the tray is resting on the surface of the ceiling or wall.

4.Installation: Place the installation tool on the bolt head and tap with a hammer until the bolt is fully installed. Tool and hammer strikes must be perfectly aligned with the bolt axis to avoid distortion. The bolt head deforms slightly to make contact with the ceiling or wall surface, creating friction that helps maintain stability.

5.Verification check: Verify bolt installation to ensure it is placed correctly and has the proper tension.

Technical Parameters:

Applications:

47mm Friction Bolt is mainly used as primary support in mechanized jumbo development and production mining.

It is one of the standard Friction Bolt widely used in worldwide projects of mining, tunnels, and dams as rock support material.

Different thicknesses are available, such as 3.0mm, 3.2mm

Both galvanizing and black are available.

Packing and Shipping:

Packed in bundle

Sample will be sent by Fedex, shipping time 7-10days, main order will be shipped by sea.

Company Profile

Hebei Minetech Machinery Technology Co, Ltd. is an joint venture enterprise with Europe Partner, which is located in Shijiazhuang City, Hebei Province,China. Our company is specialized in manufacturing and exporting of mining machinery, such as hydraulic and pneumatic drill machine, roof bolter and drilling consumption, like drill bit and drill rod with own factory in Shijiazhuang City.

With our rich expenience for over a decade and with professional engineers andsales team, we focus on providing complete solutions for mining machinery.

Target markets is gradually shifted from domestic market to international market, products are exported to more than thirty countries and regions, including Southeast Asia, the United States, Germany, Britain, South Africa, Poland, Russia, Middle Asia, South America and so on, and established a good brand and reputation international market.