MRST SERIES LARGE SIZE ROCKBREAKER SYSTEM
Built to withstand harsh conditions both underground and above, the MRST Series Rockbreaker System, or pedestal boom system, provides maximum endurance in both gyratory crusher and grizzly applications. The system has a turntable-style pedestal base with a 330-degree constant torque rotation. The system's reach is 25 to 35 feet (7 to 11 meters), paired with a 4,000 ft-lb to 8,500 ft-lb (5 400 to 11 500 joules) hydraulic breaker. BTI Rockbreaker Systems are engineered for maximum life using finite element analysis software (FEA) in all raking and breaking functions.
APPLICATIONS
Gyratory // Grizzly
RESOURCES
MRST/MRSTE Series Brochure
EN // ES
MRST Series Spec Sheet
EN // ES
Oversize hardened alloy pins, aluminum bronze bushings, and thrust washers deliver maximum service under adverse conditions. Our induction-hardened chrome cylinder rods resist damage from fly rock. Four plate variable cross-section booms are specifically designed to minimize stress concentrations that typically lead to fatigue cracks.
BTI implements many design features that contribute to the overall life of the rockbreaker. Clevis-type, high-pressure hydraulic cylinders equipped with high tensile steel-cast cylinder lugs provide maximum strength in rockbreaking applications. The cylinder’s self-aligning spherical ball bushings keep the equipment properly aligned and flexible during production hours throughout its lifespan.
For high production applications, BTI combines enhanced motion control and boom position feedback for continuous speed giving the highest level of controllability while minimizing cycle times, improving operator fatigue and production.
The turntable design offers a 330-degree full rotation with a hydraulic-driven slew- bearing drive producing a constant swing torque for consistent force during operation. All models are fitted with relief functions and back drive capability to absorb shock loading from the crusher without damaging the rockbreaker system.
BTI offers a wide range of controls for all rockbreaker systems. The Breaker Intel Control System, BTI’s premium controls, provides long-distance controls for single or multiple rockbreaker operations, enhanced motion control and position feedback with collision avoidance, programmable ramp generation and flow sharing that easily integrate into your current plant. The system also provides monitoring and diagnostics. Our standard proportional control comes with your choice of game-style or joysticks controller.
BTI'S STANDARD CONTROLS
BTI RockBreaker Systems come standard with dual joysticks, offering fully proportional electro-hydraulic control combined with fully proportional, load-sensing directional control valve for precise and variable control of all boom and breaker functions. The basic system can be modified to suit your need, including additional radio control pendants for maintenance operations to ethernet video/long-distance remote and plant integration.
BTI STANDARD POWER PACK
Your BTI Rockbreaker System’s speed and hydraulic breaker requirements determine the size and horsepower of the hydraulic power unit. BTI’s hydraulic power units are engineered for maximum performance in high vibration, dusty environments, and extreme climates and altitudes.
Power Pack Features
BOOM OPTIONS
The turntable design offers 330-degree rotation, providing constant swing torque and rotation speed over its full range of motion.
IMPACT PROTECTION
Improving your boom’s functionality increases the life of your rockbreaker system, offering enhanced impact protection from the system’s movements.
YOUR CONTROL OPTIONS
When it comes to maintaining your rockbreaker system, keeping it lubricated is key to a long, productive life. Multiple lubrication points are easily serviced from one of BTI’s optional lubrication systems.
OPERATOR COMFORT OPTIONS
HYDRAULIC BREAKER OPTIONS
ADDITIONAL OPTIONS
POWER PACK OPTIONAL EQUIPMENT
PROTECT EQUIPMENT FROM HARSH CONDITIONS
DRAWING PACKAGES, QUALITY ASSURANCE & FINAL TESTING
GRIZZLY
Grizzly applications are extremely harsh by nature. The boom is subject to high degrees of in-line and side raking, combined with various sizes and amounts of oversize. BTI’s grizzly booms are designed with wide boom cross sections, extra large pins and reinforced high tensile steel plates. All designed to handle complex loading to the boom.
GYRATORY
Big jobs need big booms and breakers. BTI’s wide range of gyratory booms allow full breaker coverage within the rock box and mouth of the Crusher. BTI’s complete line of large hammers are designed specifically for gyratories to quickly eliminate any bridging or clogging, restoring consistent material flow to the crusher.
| Technical Specifications | |||||||
|---|---|---|---|---|---|---|---|
| UNITS |
MRST SERIES |
MRSTE SERIES |
|||||
MRST25 |
MRST30 |
MRST35 |
MRSTE25 |
MRSTE30 |
MRSTE35 |
||
| Operating Weight (complete system)* |
lbs kg |
28,830 - 31,500 13 080 - 14 288 |
29,330 - 32,000 13 307 - 14 515 |
29,830 - 30,880 13 533 - 13 993 |
29,530 - 32,200 13 397 - 14 605 |
29,930 - 32,600 13 579 - 14 787 |
30,330 - 31,380 13 760 - 14 220 |
| Base Dimension | ft in m |
6' x 5' 1.8 x 1.5 |
|||||
| Vertical Breaker Reach Forward** | ft in m |
24' 9" 7.5 |
29' 8" 9.0 |
34' 10" 10.6 |
24' 4" 7.4 |
29' 7" 9.0 |
34' 9" 10.5 |
| Vertical Breaker Reach Down** | ft in m |
15' 9" 4.8 |
18' 11" 5.7. |
21' 5" 6.5 |
20' 1" 6.7 |
25' 9" 7.8 |
29' 7" 9.0 |
| Maximum Reach Forward** | ft in m |
34' 0" 10.3 |
38' 6" 11.7 |
43' 3" 13.1 |
34' 6" 10.5 |
38' 7" 11.6 |
43' 4" 13.2 |
| Swing Rotation Angle | Degree | 330° Pedestal Swing Post | 330° Indexable Turntable | ||||
| Recommended Breaker Range | BX40 to BXR85 | BX40 to BXR65 | |||||
All specifications are subject to change without notice. All results may vary.
* Operating weight is dependent on final breaker size, power pack configuration and optional equipment
**Dimensions based referenced from center of swing rotation.
**Dimensions nominal (based on BXR65 breaker) and subject to change based on final breaker selection.
Soft: |
Medium: |
Hard: |
Very Hard: |
MOHS
|
TESTING
|
||
|---|---|---|---|---|---|---|---|
| Talc Slate Gypsum rock Asbestos rock Soft limestone |
Limestone Dolomite Sandstone Copper Ore |
Granite Quartzite Iron ore Trap rock Gravel Gabro |
Iron ore (Taconite) Granite Grantic gravel Trap rock |
1 - Talc 2 - Gypsum 3 - Clacite 4 - Flourite 5 - Apatite |
6 - Orthoclase 7 - Quartz 8 - Topaz 9 - Corundum 10 - Diamond |
Scratched With: Fingernail Copper coin Pocket knife Window glass Steel File |
Hardness: little over 2 about 3 little over 5 5.5 6.5 |
Rock: |
Toughness: |
Rock: |
Toughness: |
|---|---|---|---|
| Fresh Diabase (Trap) Pyroxene Quartzite Sandstone Altered Diabase Fresh Basalt Hornblende Schist Diorite Hornblende Granite Rhyolite Quartzite Biotite Gneiss Augite Diorite Altered Basalt Feldspathic Sandstone Gabbro |
3.0 2.7 2.6 2.4 2.3 2.1 2.1 2.1 2.0 1.9 1.9 1.9 1.7 1.7 1.6 |
Chert Calcareous Sandstone Granite Slate Peridotite Granite Gneiss Andesite Limestone Mica Schist Amphibolite Dolomite Biotite Granite Augite Syenite Hornblende Gneiss |
1.5 1.5 1.5 1.2 1.2 1.2 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 |
BTI manufactures and distributes a wide range of mine, quarry, construction and demolition equipment. We specialize in hydraulic hammers, mobile rockbreakers, stationary and portable rockbreaker systems, construction and demolition attachments.
PO Box 130, 35 Elgin Street North
Thornbury, ON, Canada N0H 2P0
Tel: 519.599.2015
30625 Solon Industrial Parkway
Solon, OH, USA 44139
Tel: 440.542.3720
3453 Durahart Street
Riverside, CA, USA 92507
Tel: 951.369.0878
