Rotacan is the only design and manufacturing company in Canada fully dedicated to Rotary Blast Hole Drill Bits, Drill Pipe, and other string components. “Innovation and Performance” are the foundation of their efforts to produce dependable and quality products that provide optimal drilling performance for our customers.
Blast Hole Drill Bits for open-pit mining
Rotacan Advanced Performance (AP) rotary drill bits are manufactured using aircraft quality steel and premium carbide grades to suit the toughest application. Computerized processes for designs, manufacturing with the latest in CNC equipment and controlled heat treatment ensure consistently high-quality drill bits.
- 9 inch (229 mm)
- 9 7/8 inch (250 mm)
- 10 5/8 inch (270 mm)
- 12 1/4 inch (311 mm)
- 13 3/4 inch (350 mm)
- 15 inch (381 mm)
- 16 inch (406 mm)
Rock Type Soft Medium Hard Very Hard Model No. AP4 AP5 AP6 AP7 UCS/PSI/IMPA Less 12,000/83 8,000/55 to 30,000/207 15,000/103 to 44,200/305 30,000/207 to 60,000/414
Rotacan AP drill bits are available in standard and customized models in 4 distinct series from AP4 through AP7. These models provide rock drilling capabilities ranging from coal to iron. Performance data collected from each drill and ground condition is used to adjust critical design parameters. Therefore achieving truly advanced performance for our customers.
- Rock Formation Examples: Designed for soft formations including shale, siltstone, soft limestone, and alluvial formations.
- UCS/PSI/MPA: >12,000/83.
- Bit Weight: 1,000 to 5,000 lbs/inch of diameter.
- RPM: 50 to 140.
- IADC CODE: 4.1 – 4.4.
- Rock Formation Examples: Designed for medium to medium hard formations including sulfide and oxide copper ores, soft iron formations, medium-hard sandstone, dolomite and limestone.
- UCS/PSI/MPA: 8,000/55 to 30,000/207.
- Bit Weight: 3,000 to 6,600 lbs/inch of diameter.
- RPM: 50 to 120.
- IADC CODE: 5.1 – 5.4.
- Rock Formation Examples: Designed for medium hard to hard abrasive formations; hard copper ores, hard sandstone, medium hard iron ore, schist, gneiss, metamorphic formations; granite and medium hard igneous rock.
- UCS/PSI/MPA: 15,000/103 to 44,200/305.
- Bit Weight: 4,000 to 7,000 lbs/inch of diameter.
- RPM: 50 to 110.
- IADC CODE: 6.1 – 6.4.
- Rock Formation Examples: Designed for hard and very abrasive formations; hard copper ores, hard iron, quartz and the hardest igneous formations.
- UCS/PSI/MPA: 30,000/207 to 60,000/414.
- Bit Weight: 5,000 to 8,000 lbs/inch of diameter.
- RPM: 50 to 80.
- IADC CODE: 7.1 – 7.4.
1. Tungsten Carbide Inserts
2. Ball Bearing
3. Main Roller
4. End Roller
5. Ball Plug
6. Gage Protective Inserts
7. Shirt Tail Protection
8. Air Passage
9. Water Separator
10. Air Jet Nozzle
11. Back-Flow Valve
12. Threaded Pin Connection
Rotacan Advanced Performance (AP) Rotary Drill Bits are custom-made in close cooperation with our customers. Therefore these bits suit their specific, often harsh drilling conditions using their drill rigs and compressors. Design parameters affecting bit life and penetration rates include the Cone Profile. Wherein the Diameter, Quantity, Geometry, Extension, Spacing, and Grade, of premium grade tungsten carbide inserts are used to break the rock. The variables noted are collectively referred to as the bit Cutting Structure. A custom cutting structure provides our customers with the best combination of bit life and rate of penetration to yield the lowest cost per meter.
In very harsh conditions additional protection is offered by applying hard-facing alloy material to reinforce critical wear areas of the bit. The cone surface directly behind the gauge row will have one or two rows of carbide gauge inserts to prevent early erosion of the steel. To prevent dirt and water contamination of the bearings in wet drilling conditions an optional backflow Valve is installed. To ensure efficient removal of the rock cuttings nozzles are properly sized to direct adequate air to lift the cuttings out of the hole. While supplying sufficient air through the bearings and cones to keep them cool and prevent debris from contaminating the critical bearing area.