PAR1 Resin Bolt

PAR1 Resin Bolt


The PAR1 Resin Bolt is a resin anchored yielding bolt for the absorption of energy in squeezing and dynamic ground conditions. The PAR1 Resin Bolt provides immediate pre-tensioned support with a high yield and energy absorption capacity.

The two paddle sets of the PAR1 Resin Bolt assist in the mixing of resin during installation and act as anchors once the resin is set.

The PAR1 Resin Bolt can be supplied in Ø18 mm, Ø20 mm or Ø22 mm bar depending on support requirements. The PAR1 Resin Bolt is supplied with a shear pin to facilitate spinning of the bolt for resin mixing upon installation. Once the resin is set the pin shears under rotation to allow for tensioning of the rock bolt against the surface of the excavation.

The tri-lobe tip of the PAR1 Resin Bolt aids in the centralisation of the anchor as well as the piercing and shredding of the resin cartridge to mitigate the gloving.

Benefits of the bolt

  • High yield
  • High energy absorption
  • Immediate support
  • Auditable pre-tension with visual load indicator
  • Includes attachment points for meshing and lacing directly onto the bolt


Bolt diameter (mm)* Ø20 Ø22
Length of bolt (m)** 1.8 – 3.0 1.8 – 3.0
Hole size range: 45º crop (mm) Ø30– Ø36 Ø30– Ø36
Hole size range: Tri-lobe (mm) Ø34– Ø38 Ø34– Ø38
Minimum yield load (kN) 150 180
Typical ultimate tensile load (kN)*** 224 272
Minimum elongation**** 22% 22%
*Other size options available on request
**Non-standard lengths can be accommodated upon request
***Annual QC test average, statistical data available on request
****Tested as per SANS 6892-1:2010 (Ed. 1.00)
45º crop end

45º crop end

Tri-Lobe end

Tri-lobe end