Many quarry companies today still use drill-and-blast for large rock extraction. Legal zoning regulations, or the proximity of houses or other buildings may mean explosive blasting is not possible in some quarries. Using explosives also requires various stages and long downtimes−such as preparation of the rounds, distancing of personnel, and cessation of activities. As a result, many operations are seeking alternative solutions that can reduce costs while increasing safety, production, and lessening the impact on the environment.
While drill-and-blast continues to prove problematic in a quarry setting, a large-sized excavator equipped with a heavy, powerful breaker can provide an optimal alternative. Heavy duty hydraulic breakers represent an economic solution as they also provide high productivity and continuous production−without the risk of excessive vibrations, noise, or potentially harmful flying debris.
In response to meeting this blasting dilemma head-on, Toku America, Inc. has recently advanced its STRIKER TNB Large Quarry Breakers Line with a range of options that allows quarry operations to choose the right breaker specifically designed to their material size, hardness, and other jobsite condition variables.
Comprised of five TNB models (TNB-151, 90, 30K, 40K, 400), the large hydraulic quarry breakers are engineered for Cat, John Deere, and Komatsu excavators. Featuring advanced “accumulator free” technology, they also boast a simple and efficient design with only two moving parts−requiring no maintenance. Ultimately, this unique configuration delivers exceptional impact energy, long life, and low operating costs−while providing essential performance benefits to overcome blasting safety, downtime, and zoning limitations.
TOKU AMERICA / LARGE TNB QUARRY BREAKERS / SPECS:
Perfectly paired to a carrier or pedestal boom system, with proper sizing based on material hardness and size, TOKU’s large TNB quarry breakers all feature the following:
- Short, Fully Enclosed Tie Rods.
- Long-Stroke Piston: The most efficient design for energy transfer and recoil reduction.
- Control Valve: “flow through” design reduces hydraulic surge and efficiently controls the breaker operating cycle.
- 50/50 Piston to Tool Weight Ratio: Efficiently transfers the blow energy into the material and reduces recoil.
- Dual Retainer Pins: Correct tool alignment and evens tool wear for longer tool and bushing life.
- Cushion Chamber: Each blow is isolated from the carrier and operator−energy recycled and used for the next blow.
BOX HOUSING:
Box Housing Isolators help eliminate recoil shock to the carrier.
- Box Housing with Sound Suppression for quitter operation.
- Box Housing Key Slot Anti-Vibration Design in Front Head.
TOOL SELECTION:
- BLUNT: Used for boulder and oversize breaking; tool Impact delivers the stress
wave generated by the hammer causing the material to fracture; excellent wear resistance.
- CHISEL: Suitable for slabby, angular material; tool provides wedge effect impact and good penetration.
- MOIL: ideal for softer, abrasive material where high penetration is needed; similar to the blunt it results in less torque in the front head.
OPTIONAL EXTREME “SEVERE” DUTY WEAR PACKAGE:
- Auto lube options for increased hammer life.
- Positive Pressure Air Check Valve keeps dust and dirt out of the tool area.
- Lower Rebuild Costs via simple design-only two moving parts.
- Low sensitivity to back pressure means the breaker can be used on virtually any carrier.
- No rubber diaphragm accumulators.
TOKU AMERICA / ROCK BREAKER SYSTEM / CONCLUSION:
According to Toku America President, Matt Gruden, “TOKU’s STRIKER TNB Large Quarry Breakers are uniquely engineered for extremely big demolition or construction projects. Whether mounted on an excavator, or integrated into a fixed system, they provide maximum productivity in quarry operations to minimize operator fatigue and operational costs−while improving safety and environmental impact.”
TOKU also has an engineering team available with over 40 years of experience to provide guidance and technical support in choosing the Rock Breaker System specific to customers’ needs. The company’s service profile also offers hydraulic breaker rebuild options including−Master Seal Kit, Front Tool Bushing, Spring pins/Stopper pins, Retainer pins, Labor, and return Freight. Additional Parts and Labor will be quoted as needed prior to repairs.
For more information about Toku America, Inc. visit: www.toku-america.com.
