JM series Roof Bolter is self-propelled articulated rock bolting rig for underground mine roof & wall reinforcement. Two classic models JM-B1 (Single Boom) and JM-B2 (Double Boom). Low-profile chassis fits narrow underground drifts, equipped with hydraulic drifter, automatic bolt feeding system and ROPS & FOPS safety cab. CE certification available, widely matched with underground LHD and personnel carrier for metal mining projects.
JM Series Roof Bolter | Underground Rock Bolting Rig
Models：JM-B1 (Single Boom) ｜ JM-B2 (Double Boom)
Product Introduction
JM series Roof Bolter (Rock Bolting Rig) is specialized articulated underground mining machine for roof and side wall rock reinforcement. It completes drilling, resin cartridge loading, rock bolt installation and tensioning in one machine, to stabilize surrounding rock and avoid rock falling hazards in underground drifts.
Adopting low-profile heavy-duty articulated chassis, the machine can work in narrow underground roadways. Equipped with high-power hydraulic rock drifter, automatic bolt carousel and hydraulic safety canopy. ROPS & FOPS certified safety cab protects operator during bolting work. SAHR wet multi-disc brake system ensures safe travelling on underground ramps. CE and ISO documents available. It can be perfectly matched with JM electric LHD and ZDRU underground personnel carrier for full-set underground mining equipment supply.
Main Technical Parameters (Combined Table)
| Item | JM-B1 Single Boom | JM-B2 Double Boom |
|---|---|---|
| Bolting Boom | Single boom | Double boom |
| Max Vertical Bolting Height | 4.2 m | 5.0 m |
| Recommended Roadway Height | ≥2.2 m | ≥2.6 m |
| Overall dimension L×W×H (mm) | 6200×1950×2100 | 7100×2100×2250 |
| Operating Weight | 12500 kg | 16800 kg |
| Drive Mode | 4-Wheel Drive | 4-Wheel Drive |
| Articulated Steering Angle | ±35° | ±35° |
| Max Gradeability | 20% | 20% |
| Brake System | SAHR wet multi-disc brake | SAHR wet multi-disc brake |
| Safety Cab | ROPS & FOPS certified | ROPS & FOPS certified |
| Drill Power | Hydraulic rock drifter | Hydraulic rock drifter |
| Power Option | Diesel / Electric | Diesel / Electric |
| System Voltage | 24V DC | 24V DC |
Disclaimer: Technical parameters subject to continuous product upgrade. Final specifications subject to factory acceptance test.
Core Key Advantages
- Low-profile articulated chassis：Compact body for narrow underground mine drifts, small turning radius, strong grade climbing ability.
- ROPS & FOPS safety cab + hydraulic safety canopy：Dual protection for operators during roof bolting operation, prevent falling rock injury.
- High-efficiency hydraulic rock drifter：Fast drilling speed for rock bolt holes, adapt hard rock conditions.
- Automatic bolt carousel system：Pre-store multiple rock bolts & resin cartridges, reduce manual handling and improve bolting cycle speed.
- SAHR wet multi-disc fail-safe brake：Reliable braking on slippery underground ramp, hydraulic-loss auto brake.
- Modular & customizable：Single / double boom selection, diesel or electric power, cable bolt installation optional. CE available.
- Full-site equipment matching：Compatible with JM LHD and ZDRU personnel carrier, supply complete underground mining fleet.
Application Scenarios
- Underground Metal & Non-metal Mines：Roof and side wall rock bolting support for gold, copper, zinc mines.
- Deep Tunnel Projects：Permanent rock reinforcement for diversion tunnel and underground cavern.
- Global Market：Suitable for mining contractors in Africa, Latin America and Southeast Asia. Standard model for non-coal mine; explosion-proof version optional for coal mines.
Recommended Wear-Prone Spare-Parts (On-site Stock List)
Store these consumable high-wear components locally to minimize equipment downtime.
- Drill bit, drill rod, shank adapter
- Hydraulic seal kits for boom & feed cylinder
- High pressure hydraulic hoses and fittings
- Wet brake friction discs and separator plates
- Mine heavy-duty tires, articulated joint bushes
- Sensors, relays, warning lamps and cab sealing strips
Frequently Asked Questions (FAQ)
Q1: What is Roof Bolter?
A1: Roof bolter (rock bolting rig) is underground mining machine used for roof reinforcement. It drills holes and installs rock bolts to lock rock strata together and stop rock fall.
Q2: What is difference between JM-B1 and JM-B2?
A2: JM-B1 is single boom model for medium & small cross-section roadways. JM-B2 double boom version works faster for large-section drifts. Chassis, brake and cab design keep same.
Q3: Can this roof bolter work in coal mine?
A3: Standard configuration is for non-coal metal mines. Full explosion-proof modification required for coal mine application.
Q4: Can we get CE certificate?
A4: Yes, CE & ISO documents available for export mining projects.
Q5: Can I choose electric power version?
A5: Yes, both diesel tramming and electric tramming options are available.
Q6: What is delivery lead time?
A6: Normal production lead-time is 2.5-4 months, subject to model and optional configurations.
Q7: Warranty terms?
A7: 12 months warranty after commissioning or 18 months after shipment (whichever comes first). Consumable spare parts excluded.
Q8: Payment terms?
A8: T/T, L/C at sight. Normally 30% deposit upon contract confirmation, balance before shipment.
Final Disclaimer: Product photos for reference only. Minor appearance improvements and optional configurations may apply. Final machine appearance & performance subject to actual delivery unit.
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