Shot blastingmachines forevery productionneed.

A shot blasting machine is equipment that uses a high-speed rotating blast wheel to propel abrasive media (steel shots, steel grit, etc.) onto workpiece surfaces at high velocity. The impact of the abrasive cleans or strengthens the surface. It is widely used in casting cleaning, forging descaling, steel pretreatment and surface strengthening processes.

Shot blasting uses mechanical force (a rotating impeller) to propel abrasives — high efficiency, ideal for batch processing. Sandblasting uses compressed air to blow abrasives — flexible, suitable for complex shapes and fine finishing. In short: shot blasting for high-volume work, sandblasting for detailed work.

Common types include: tumble belt (small-to-medium batch castings/forgings), crawler-type (high-volume small parts), hook-type (large/medium workpieces), through-feed (continuous profiles/plates), table-type (delicate parts prone to collision) and monorail (high-volume continuous production lines).

Selection is based on: workpiece size and weight, shape complexity, batch volume, cleaning quality requirements (cleanliness and roughness grade) and production rhythm. Our technical team provides free selection consultation based on your specific workpieces.

Our products cover a full range: tumble/crawler-type machines handle batches from 50kg to 2 tons; through-feed models handle profiles and plates from 100mm to 3,000mm in width; hook-type machines handle single workpieces from 50kg up to 20 tons. Specifications can be customized.

Cleaning efficiency is measured by pieces processed per unit time, surface cleanliness grade (ISO 8501 or Sa2.5), surface roughness (Ra/Rz) and blasting time per piece. Efficiency is affected by wheel power, shot velocity, shot size, impact angle and workpiece positioning.

A two-stage dust collection system is used: the primary stage uses a settling chamber or cyclone for large particles; the secondary stage uses a high-efficiency baghouse filter with emission concentration ≤10mg/Nm³, exceeding environmental standards. Air volume is matched to the machine model, maintaining slight negative pressure to prevent dust leakage.

Commonly used abrasives include cast steel shot (medium hardness, long life, most common), stainless steel shot (for non-ferrous metals and stainless steel, to avoid iron contamination), cut wire shot (angular, strong cleaning) and steel grit (sharp-edged, ideal for profiling and deep cleaning). Size typically ranges from 0.3mm to 2.0mm.

Reference consumption: casting cleaning uses approximately 50–150g per ton of castings; steel descaling uses approximately 100–300g per ton of steel. Replace or replenish when cleaning time extends noticeably, surface roughness fails to meet specifications, or fine particles become excessive. Regular sieve analysis is recommended — replenish on a "small amount, frequent" basis.

Daily essentials: inspect the blast wheel, control wheel and directional sleeve for wear after each shutdown; clean dust collector accumulation; check the circulation system for blockages; check seals to prevent shot leakage; monitor motor and bearing temperature rise and lubrication. A daily inspection checklist and preventive maintenance schedule are recommended.

Standard cast steel blades have a service life of approximately 500–1,500 hours under normal conditions. Replace when groove wear exceeds 1–2mm in depth or thickness is reduced by more than 50% of the original. Regular inspection and full-set replacement are recommended to maintain dynamic balance.

Yes. We offer turnkey services from foundation design guidance, installation and commissioning to operator training. Our after-sales engineers provide on-site guidance and comprehensive training on operation, maintenance and safety to ensure a fast production start-up.

Key safety points: never open inspection doors while running (shots fly at high speed — extremely hazardous); do not perform maintenance until the blast wheel has fully stopped; dust collection must interlock with the main unit; operators must wear safety goggles, dust masks and earplugs; establish safety warning zones around the equipment.