The Quadbolter is a twin-boom four-mast mobile bolter with a wide range of boom movement. The Quadbolter can install four roof bolts simultaneously using two operators. In addition, the outer roof bolters can be rotated over to provide rib bolting, resulting in two roof and two rib bolts at the same time.
The Quadbolter is designed for minimal maintenance, using direct mast-mounted hydraulic controls to reduce the number of hoses required.
Designed for operator ease
- Large deck area for ease of operator movement
- Large canopy, rated to withstand a vertical load of 100kN, with adjustable height settings
- Large capacity, on-board materials pod for storage of bolting consumables
- Excellent visibility and large walkway (for safe access) for tramming and setting up temporary roof supports
Designed for maximum bolting versatility
- Semi-automatic control system for installing two bolts in a parallel operation, reducing cycle times
- Operator-controlled platform level adjustments for varying localized seam conditions (up to an additional 600 mm for high-seam operations)
- Parallel holding boom arrangement for full range ability for mid- and high-seam applications
| Number of roof drills |
Nominally 4 |
| Number of rib drills |
Roof drills roll over to bolt rib |
| Machine weight |
Approx. 29,800 kg, depending on options |
| Ground pressure |
170 kPa |
| ATRS |
Three-point advanced temporary roof support (in front of machine) |
| Machine length |
808 mm |
| Machine width |
3,160 mm retracted, 5,680 mm with platforms extended |
| Operating width |
Up to 6,000 mm |
| Operating range |
2,400 to 5,000 mm |
| Minimum tramming height |
2,060 mm |
| Ground clearance |
360 mm |
| Traction speed |
0 to 20 m/min hydraulic drive, proportional control |
| Hydraulic tank |
450 liters main tank plus 350 litres in chassis |
| Motors |
Hydraulic pump motor 1 x 125kW air-cooled 50 Hz |
| Pump |
Fixed-gear pump, four sections, each section 97 litre/min |
| Voltage |
1140V, 1050V, or 950V |