Rubber Belt Tumble Shot Blasting Machine | Q32 Tumblast

The Q32 series rubber track shot blasting machine (tumble belt type) cleans small and medium metal workpieces in fast, repeatable batches. It is a batch rubber belt tumble shot blasting machine for desanding, derusting, descaling, deburring and surface preparation before coating. Overseas buyers reach the same machine under several names: rubber crawler tumble blast machine, crawler type shot blasting machine, tumblast shot blasting machine, tumble belt blast machine and apron type shot blasting machine. One design sits behind all of them. An endless rubber belt forms a rotating drum, and blast wheels clean every surface as the parts tumble.
Blast wheels throw abrasive into the rotating rubber-track drum. Parts tumble continuously, so every surface is reached evenly. The rubber track cushions the load, protecting delicate parts. Noise stays lower than a steel belt drum, which matters in staffed workshops.
It serves foundries, automotive plants, non-ferrous die casting shops, fastener factories and heat treatment shops. It runs stand-alone as a tumble blast machine for castings, or links with loading devices and discharge conveyors.

1. How a Rubber Track Shot Blasting Machine Works

Output is a clean surface for painting or plating. Finish reaches Sa 2.5 to Sa 3.0 per ISO 8501-1. As a batch type tumble blast machine, cycle time is 5 to 15 min. The air-wash separator returns usable abrasive to the wheels, and the dust collector keeps the workshop air clean.

2. What Do Overseas Buyers Call This Machine?

The machine class carries different names in each market. The table below lists the wording used by makers and buyers, so a search in any region lands on this page.

Model codes buyers search

Two code families identify this class. The Chinese export series runs Q324, Q326, Q328, Q3210 and QR3210 with automatic loading. The North American legacy series comes from Pangborn barrel blast machines: 6GN, 12GN, 15GN and 28GN, where the number is the batch volume in cubic feet. Wheelabrator codes rubber belt batches MB100G to MB400G, and Rosler codes them RMBD and RMBC. A buyer typing 15GN rubber belt tumble blast or Q3210 tumblast is shopping for exactly this machine.

3. Workpieces Suitable for the Q32 Series

Suitable up to 25 kg per piece, for parts that do not deform. As a small parts shot blasting machine, it fits high-mix production. Desanding of aluminum and zinc die castings, descaling of gears and springs, derusting of bolts and nuts before galvanizing, and oxide removal on bearings all run on this machine daily.

4. Workpieces NOT Suitable for This Machine

• Hot workpieces. Heat damages the rubber track.
• Sharp flash or burrs. They cut the belt.
• Thin-wall parts. Tumbling may distort them.
• Tight tolerance. Blasting can shift dimensions.

Choose a turntable shot blasting machine instead. A tilted drum shot blasting machine or hanger type shot blasting machine also works. Our engineers confirm the right machine cell from your drawing before you order.

5. What Are the Published Technical Parameters?

Three standard models cover the range. The figures are the published standard configuration; custom voltages and abrasive packages are quoted per project.

The QR3210 adds automatic loading and unloading to the Q3210 chamber. Hourly part counts, abrasive consumption and wear-part life depend on part shape and abrasive grade, so we confirm them against your drawings instead of publishing one generic number.

Costs and quotation

Contact us for a quotation based on the machine configuration, production capacity, and project requirements.

7. Key Advantages at a Glance

• Rubber track protection — low impact, low noise. Ideal for delicate castings.
• Pitless installation — no foundation pit, no civil works.
• Low operating cost — high abrasive recycling, cheap wear parts.
• Flexible production — stand-alone, or integrated with automatic loading and unloading lines.
• Clean workshop — air-wash separator plus dust collector.
• Wide coverage — as an apron type shot blasting machine, it handles cast and forged batches.

8. Frequently Asked Questions

Q1. What materials can the Q32 series shot blasting machine process?

Cast iron, cast steel, aluminum, zinc, copper alloys and heat-treated parts, up to 25 kg per piece.

Q2. Will a rubber track shot blasting machine damage precision parts?

No. The rubber track cushions parts as they tumble. Impact is lower than with a steel band.

Q3. Can this machine clean springs and gears?

Yes. It removes rust and scale from springs, gears and other small parts before coating.

Q4. Why can’t workpieces with sharp burrs or flash be blasted?

Sharp burrs cut the rubber track and can tear the belt. Deburr first.

Q5. Does the Q32 series need a pit foundation?

No. It is a compact pitless tumble blast machine that sits on a level floor.

Costs and quotation

Contact us for a quotation based on the machine configuration, production capacity, and project requirements.

Q7. Is a tumble belt blast machine the same as a rubber crawler or crawler type shot blasting machine?

Yes. Tumble belt, rubber crawler, crawler type, tumblast and apron type all name one design: an endless rubber belt that forms a rotating drum. Makers pick different words; the working principle is identical.

Q8. What does 15GN mean in a rubber belt tumble blast machine?

It is the North American barrel size code inherited from Pangborn barrel blast machines. GN marks the rubber belt barrel series and the number is the batch volume in cubic feet, so 15GN is a 15 cubic foot batch. The Chinese export series uses Q324 to Q3210 for the same machine class.

Q9. Can the Q32 series be linked to an automatic loading and unloading line?

Yes. The QR3210 ships with automatic loading and unloading as standard. Smaller models accept a loading bucket, vibratory feed or hydraulic tip-up device, so one operator can run several machines.

Q10. How do I choose between Q326, Q3210 and QR3210?

Match the batch to your hourly output. Q326 suits 0.6 to 1.2 t per hour with parts up to 10 kg. Q3210 covers 3 to 5 t per hour with parts up to 30 kg. QR3210 adds automatic loading for the same 30 kg parts. Send part weight and target output and we confirm the model.

9. Watch Our Machines Running On-Site

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10. Ready to Specify This Machine?

Send drawings, material, dimensions and hourly output through the inquiry form below. We will confirm model and abrasive grade. Ask for the current rubber belt shot blasting machine price. Engineers also answer on WhatsApp and WeChat at +86 15895165618.