Debonded Spring Bolt 20mm
- -The main body of the Debonded Spring 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.
- -A plastic sheath can be fitted over the middle section to provide dynamic capabilities to the spring bolt.
- -Debonded Spring Bolt used with a face plate, domed ball,anti-friction washer, and nut.
- -Installation is quick and convenient, providing stable support for the rock strata.
Debonded Spring Bolt 20mm Functions
A full-thread bar bolt can be an effective rock reinforcement system for ground support.The debonded spring bolt designed by TONRY for the metalliferous mining have been supplied in mines for many years and have been recognized by customers.Together with a torque dome nut, supplied as standard, it represents state of the art technology in the one step installation of roof bolts for mining,tunneling and strata reinforcement.
Debonded Spring Bolt 20mm Features & Advantages
Offered with either left-hand or right-hand threading.
Enhanced thread ribs ensure better resin mixing and strengthened anchorage.
Compatible with both resin cartridges and cement grout.
Maintains consistent strength throughout its length.
The continuous thread allows for nut fastening at any point along the length, improving material utilization and reducing costs.
Available in either a black or hot dip galvanized finish.
Debonded Spring Bolt 20mm 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 |
Debonded Spring Bolt 20mm Bearing plate
Round plate, domed plate,combi plate
Debonded Spring Bolt 20mm Accessories
Domed nut, hex nut, anti-friction washer, domed ball
Debonded Spring Bolt 20mm Length and 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.
Debonded Spring Bolt 20mm Applications
Mines
Tunnels
Slopes
Places that need ground support
