Virsbolt 120 and Virsbolt 120+
Select a Language
General Product Description
Virsbolt 120 and 120+ are mostly used for mining applications.
Virsbolt 120 and 120+ are deliverd in thickness of 0.079", and in bundles of 100 bolts per bundle. The bolts have a load capacity of 26.97 kipf.
Virsbolt 120+ is made of special steel and has gone through a precise annealing process to give the bolts excellent elongation characteristics whilst maintaining good load-bearing capacity. This gives the 120+ better capacity to follow rock deformation by squeezing ground or high-strain concentration areas. The products are available within the length range of 59.055" - 157.480".
Advantages of using Virsbolt:
-
Provides immediate and full support action
-
Accommodates large rock movements and still maintains its high load-bearing capacity
-
High deformability to accommodate ground movements in tension as well as in shear
Dimension Range
Virsbolt, which is an expandable rock bolt, comes in a variety of dimensions and load-carrying specifications. Please contact your local salesperson for more information.
Product | Virsbolt 120/120+ |
|---|---|
Profile diameter in. (mm) | 1.083" (28 mm) |
Original tube diameter in. (mm) | 1.614" (41 mm) |
Upper bushing diameter in. (mm) | 1.102" (28 mm) |
Bushing head diameter in. (mm) | 1.181" / 1.457" (30 mm / 37 mm) |
Standard length* in. (mm) | 59.055" - 157.480" (1.5 m - 4.0 m) |
* Other lengths upon request. |
Mechanical Properties
Product | Wall Thickness in. (mm) | Minimum yield load (kipf) | Typical Elongation A (%), not guaranteed | Elongation A (min %) | Typical breaking load (kipf), not guaranteed | Minimum breaking load (kipf) | Weight lb./ft (kg/m) |
|---|---|---|---|---|---|---|---|
Virsbolt 120 | 0.079" (2 mm) | 22.48 | 20 | 15 | 29.23 | 26.97 | 1.344 lbs./ft (2.0 kg/m) |
Virsbolt 120+ | 0.079" (2 mm) | 22.48 | 30 | 25 | 29.23 | 26.97 | 1.344 lbs./ft (2.0 kg/m) |
Tolerances
Tolerances according to Jennmar specifications.
Please get in touch with your local salesperson for more information regarding tolerances.
Delivery Conditions
Dry/oiled/plastic coated. Virsbolt 120 and 120+ are delivered bundled in bundles of 100 bolts per bundle as standard.
Delivery requirements can be found in Jennmar's brochure Virsbolt, expandable rock bolt for rock reinforcement or at www.jennmar.se
Fabrication and Other Recommendations
Product | Virsbolt 120/120+ |
|---|---|
Recommended hole diameter in. (mm) | 1.260 - 1.535" (32 mm - 39 mm) |
Recommended inflation pressure psi (bar) | 4351 psi (300 bar) |