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Technical and Purchasing Guide

Frequently Asked Questions About Crushers and Crushing Plants

Search a question or use the categories to find practical answers about equipment selection, plant capacity, spare parts, maintenance and project delivery.

Jaw crushers are commonly used for primary size reduction. Hydrocone and Kubit impact crushers are generally used in secondary or tertiary stages, depending on rock hardness, abrasiveness, required product shape and plant capacity.

Selection and Ordering

A jaw crusher uses compression to reduce large feed at the beginning of the line. A Hydrocone is a cone crusher for continuous crushing of medium to hard materials. A Kubit uses rotor impact and hammers and is often selected for later stages.

Equipment and Applications

Actual capacity is not determined by one machine’s nominal rating. Feed type and moisture, feed size, final gradation, feeder and screen performance, conveyor capacity and the balance between all machines must be evaluated.

Selection and Ordering

A mobile crusher suits projects that move frequently, have shorter operating periods or cannot justify extensive foundations. A stationary plant generally offers more flexibility for continuous production, higher capacities and future expansion.

Selection and Ordering

Provide the material or rock type, maximum feed size, required capacity, target product gradation, moisture or clay content, installation space and available power.

Selection and Ordering

Yes. Feed and discharge dimensions, capacity, motor power, chassis, wear-part selection and upstream or downstream equipment can be adapted to the project.

Selection and Ordering

Rock type and size, plant capacity, loading method, fines content, impact from loaders or trucks and installation conditions are key factors. The feeder must provide a controlled and uniform flow.

Equipment and Applications

A grizzly is normally installed near the beginning of the line to remove soil and smaller material from coarse feed. A vibrating screen is used for more accurate separation into different product sizes.

Equipment and Applications

A sand washer combines mechanical movement and water flow to remove clay, silt and unwanted fine material. Washer type, water flow, fine-particle content and feed rate must be balanced.

Equipment and Applications

The Kubit HS is used for secondary crushing and production of crushed aggregate. Rotor, hammer and impact-apron design affect capacity, product shape and wear.

Equipment and Applications

A Hydrocone is commonly used in secondary or tertiary crushing of medium to hard materials and is suitable for continuous production with controlled gradation.

Equipment and Applications

Discharge setting, internal wear condition, machine speed, feed rate and screen performance all affect output gradation. Reducing the setting without checking power and capacity can increase load and wear.

Equipment and Applications

Wear parts such as jaw plates, Kubit hammers and aprons, Hydrocone mantles and concaves and bushes must match the exact machine model and duty. Send machine details, dimensions and a photograph where possible.

Maintenance and Parts

Uniform feeding, prevention of tramp metal, correct crusher settings, selection of a suitable alloy and regular inspection are essential.

Maintenance and Parts

Daily checks of noise, vibration, temperature, leakage and belts; lubrication according to schedule; inspection of bolts, bearings and wear parts; and recording operating hours and repairs.

Maintenance and Parts

Worn parts, unsuitable feed, high moisture or clay content, blocked screens, incorrect settings, belt slip, bearing problems or unbalanced machine capacities can all contribute.

Maintenance and Parts

Project support may include layout review, installation guidance, pre-commissioning checks and training on operation and maintenance. The exact scope should be stated in the proposal or contract.

Installation and Services

Lead time depends on machine type, level of customisation and required components. Warranty and after-sales terms should be stated for each order in the quotation or contract.

Installation and Services
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