Hammer crushers are used for crushing medium and low hardness stones. The crusher provides advantage of producing final product without any additional screening due to grizzly design under the crusher.
What Are Hammer Crushers and How Do They Work?
In a hammer crusher, hammers pivoted on the rotor rotate at high speed and shatter the material. Crushed material stays in the crushing zone until it passes through the grate (screen basket) under the rotor; product size is set by the grate opening.
Providing a high reduction ratio in a single stage, hammer crushers are an economical fine-crushing solution for soft to medium-hard, low-abrasion materials.
Applications
Selection Checklist
- Assess abrasiveness and moisture; wet material can clog the grate
- Grate opening chosen for the required product size
- Hammer material and weight suited to the application
- Vibration monitored for rotor balance and bearing life
Main Spare Parts for Hammer Crushers
- Hammers and hammer pins
- Grate (screen) basket and breaker plates
- Rotor discs and shaft-bearing assembly
- Housing liners
Frequently Asked Questions
What is the difference between hammer and impact crushers?
Hammer crusher hammers are pivoted and the product leaves through a grate; impact crusher blow bars are fixed to the rotor and there is no grate. A hammer crusher gives a finer product but is more sensitive to abrasive material.
How are hammers replaced?
Opposite hammers are fitted from the same weight group to keep the rotor balanced; as hammers wear they can be turned to use the second face.
Detailed guides: hammer crusher guide, crusher spare parts, wear parts.