ROCBOLT Technologies and ROCBOLT Resins

INSTáL II Compression Bolt (3/4" and 7/8")

  1. Drill a 1-3/8" diameter hole approximately 1" to 1-1/2" longer than the bolt when completely assembled. Measure from where the plate touches the roof to the top of the bolt. Adjustment to be made to accommodate header boards, crossbars, plank, etc.

  2. Insert appropriate length and type of resin cartridge into hole (system adaptable to any length of resin).

  3. Insert the top section of the INSTáL II Bolt into the borehole with expansion anchor, support nut, adjustable resin compression ring, and coupler with roll pin. Now, rotate the headed bottom section with hardened steel washer, optional anti-friction washer, and plate into the bottom end of the coupler. Make sure that both ends of the bolt are completely threaded into the coupler snug against the roll pin. Note: due to vibration in transit and handling, the couplers can sometimes loosen off the threaded portion of the bolt.

  4. With the bolt in the bolt wrench, raise to top of the hole penetrating the resin cartridge. Do not rotate bolt until it is completely in the hole. Holding the bolt snug against the roof, without applying excessive up pressure with the boom of the bolting machine, torque bolt within torque range as specified in the roof control plan (200-350 ft-lbs for 3/4" and 250-400 ft-lbs for 7/8"). Always keep hands away from rotating parts. This completes the installation.