At Hitec we supply the Double Toggle Jaw Crusher, a Laboratory Jaw Crusher for mechanical sampling and sample preparation. The crusher is part of our sample preparation line, which also includes dividers, grinders and drying ovens. The machine has two moving jaw plates, one driven at the top and one at the bottom, which is the double toggle layout. The top plate adjusts the bottom opening and helps the jaw plates last longer, while the bottom bolts can be set to produce coarser particles. Finer crushing reduces the production rate, so the setting is a balance between the output size and the throughput. Our company is based in Qingdao and supplies sampling, crushing, dividing, grinding and drying equipment.

How the Double Toggle Design Works

In a double toggle jaw crusher, the moving jaw is driven through a pair of toggles rather than a single one. The arrangement changes the motion of the jaw and the force applied to the material. On this series, the top plate adjusts the bottom opening, which gives the operator a way to control the product size and to compensate for wear. The bottom bolts can be adjusted for a coarser output. The design is aimed at a better product shape and a more durable jaw plate, not only at raw throughput.

Models and Technical Data

The DJC-H30 has a maximum input size of 50 mm, an adjustment range of 2 to 5 mm, a production capacity of 0.5 to 1 cubic metre per hour, a spindle speed of 720 rpm, a crushing efficiency of 95 percent, a 5.5 kW motor at 380 V, IP55 protection and F insulation. Its dimensions are 995 by 710 by 1050 mm and its weight is 300 kg. The DJC-H80 has a maximum input of 80 mm, the same 2 to 5 mm adjustment range, a capacity of 1 to 3 cubic metres per hour, a 720 rpm spindle, 95 percent efficiency, an 11 kW motor at 380 V, IP55 and F, dimensions of 1205 by 1000 by 2320 mm and a weight of 500 kg.

Where It Is Used

The crusher is used in laboratories and sample preparation rooms for coal, minerals, metallurgical samples and geological materials. It reduces a sample to a size that the next stage, such as dividing or pulverising, can handle. The small footprint and the 300 to 500 kg weight make it suitable for a bench or a dedicated sample room, and the 380 V motor is standard for industrial labs. The buyer should match the model to the input size and the required output, because a crusher that is too small will need more passes and a crusher that is too large may over-crush the sample.

Operation and Maintenance

The jaw plates should be checked for wear, and the setting should be confirmed before each batch. The machine should be fed at a steady rate, without forcing material that is larger than the maximum input size, and the discharge should be clear before the motor starts. The bearings and the toggle mechanism should be lubricated at the interval in the manual, and the bolts should be checked for tightness after the first hours of operation. A sample that has been crushed should be collected cleanly to avoid cross-contamination between batches. A clean crusher and a clean collection tray are as important as the setting, because a sample that picks up dust from the previous batch is no longer representative.

Working With Hitec

Qingdao Highest Electromechanical S&T Development Co., Ltd. provides one-stop services in mechanical sampling and sample preparation, from scheme design and equipment manufacturing to installation, commissioning and long-term maintenance. The range includes crushers, sample dividers, grinders, integrated sample preparation equipment, drying ovens, moisture analysers, screening machines and fire assay equipment. For the Double Toggle Jaw Crusher, contact us on +86-532-86996767 with the material, the input size and the required output, and our team will confirm the model and the next steps.

If you are comparing crushers, ask for the maximum input size, the adjustment range, the capacity, the motor power and the dimensions in writing, and compare them on the same basis. Our team will explain the difference between the models in plain terms and tell you when a requirement needs to be confirmed by the laboratory manager.