Mining Spring Anchor Bolt
- -Available in left-hand or right-hand thread.
- -Higher thread ribs compared to other bars,mix resin better and improve anchorage.
- -Suitable for use with either resin cartridges or cement grout.
- -It has equal strength on the entire length.
- -Due to continuous thread on the entire length, the nut can be fastened upward at any place. This will increase the material utilization ratio and save cost.
Mining Spring Anchor Bolt Functions
Mining Spring Anchor Bolt features a high-strength metal bolt body, continuous threads rolled throughout the entire length, specially designed spring wire attached to the up-hole end ensures that the resin components are thoroughly combined and distributed evenly.and uniform strength throughout the length. The fastening end is equipped with prestressed washers and ball-shaped nuts, which makes it material-saving, labor-saving, and uniform strength.
Mining Spring Anchor Bolt Features & Advantages
The main body of the Posi bolt is a full thread bar bolt, with the top end coiled into a spring shape using steel wire.
The spring-shaped steel wire can thoroughly mix the resin.
Installation is quick and convenient, providing stable support for the rock strata.
A plastic sheath can be fitted over the middle section to provide dynamic capabilities to the Posi bolt
Available in black or hot dip galvanized.
Posi bolt Mechanical Properties
| Diameter | Yield Strength | Tensile Strength | Elongation A% | Mass Meter | Core Dia | Major Dia | |||||||
| Min | Typ. | Min | Typ. | Min | Typ. | ||||||||
| 20mm | 515 MPa | 162 kN | 560 MPa | 176 kN | 630 MPa | 198 kN | 710 MPa | 220 kN | 18% | 24% | 2.46KGS | 19.5mm | 22.5mm |
| 22mm | 525 MPa | 199 kN | 590 MPa | 224 kN | 652 MPa | 247 kN | 761 MPa | 289 kN | 18% | 24% | 2.98KGS | 21.2mm | 23.8mm |
| 25mm | 550 MPa | 269 kN | 610 MPa | 298 kN | 684 MPa | 335 kN | 798 MPa | 391 kN | 18% | 24% | 3.85KGS | 24.8mm | 28.5mm |
Posi bolt Bearing plate
Posi bolt Accessories
Domed nut, hex nut, anti-friction washer, domed ball
Posi bolt Length & Package
Bolts are packaged in bundles.
Bolt fittings, such as nuts, anti-friction washers, and domed balls, are fitted to rock bolts in the requested configuration.
Posi bolt Applications
Mines
Tunnels
Slopes
Places that need ground support
