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Spinner Hanger Shot Blasting Machine
Product Description:
A spinner hanger shot blasting machine is a batch-type blast cleaning system in which the workpiece hangs from a rotating hanger hook and is carried into a blast chamber. The hook, driven by an electric hoist, turns the load slowly in front of fixed blast wheels, so the whole surface passes through the abrasive stream without being re-fixtured. The KingWo Q376 to Q37100 range covers workpieces from φ600 × 1,000 mm to φ3,000 × 3,000 mm at 600 to 8,000 kg per hook. It removes scale, moulding sand, rust and burrs; it does not shot peen, and it does not reach the internal cavities of a closed part.
How a Spinner Hanger Shot Blasting Machine Works
Suspension and rotation. The hanger hook is a powered rotating assembly, not a static hook hanging from a crane beam. A cycle runs load outside the chamber, index in, rotate and blast, index out, unload. Because the workpiece sits on a fixed axis relative to the hook, the blast pattern repeats from cycle to cycle — which is what makes the result repeatable enough to write into a drawing note rather than negotiate piece by piece.
Blasting. Blast wheels are fixed to the chamber walls at set angles. The figure that compares across models is abrasive flow rate, not wheel count: 2 × 120 kg/min on the Q376, rising through 3 × 250 kg/min on the Q3720 and Q3730 to 4 × 250 kg/min on the Q3750 and Q37100. A load that turns in the stream presents every face to the wheels in turn, so a fixed layout reaches faces that a static fixture would leave in shadow.
Abrasive circulation. Spent abrasive drops to the chamber hopper, is lifted by the bucket elevator, cleaned in the abrasive separator and returned to the wheels. On this range elevator capacity and separator capacity are matched, from 15 t/h on the Q376 to 75 t/h on the Q37100 — a closed loop, so abrasive consumption is make-up for fines and breakdown rather than a per-cycle cost. Dust is drawn off at 5,000 to 20,000 m³/h and handled by a separate dust collector sized to the model.
What the Hanger Design Buys You
No part-on-part impact. Nothing tumbles. Thin-walled housings, cored castings and machined surfaces that would be damaged in a barrel or a tumble belt hang free and meet only abrasive.
One fixture change per job, not per batch. A mixed order of six different castings runs as six hook loads with six hanger fixtures. There is no drum to empty between jobs, which is the reason this machine suits jobbing foundries and subcontract machining rather than single-part mass production.
Coverage from rotation, not from wheel count. A load turning in a fixed blast pattern is exposed on all sides over the cycle. That is why four wheels on a Q3750 can serve a 5,000 kg casting without a powered manipulator.
A load range a tumble belt cannot reach. From 600 kg to 8,000 kg per hook, and workpieces up to φ3,000 × 3,000 mm — above the practical ceiling of any drum machine.
Floor space is vertical. The footprint is small relative to the load, but the machine is tall: overall height runs from 3,443 mm on the Q376 to 8,652 mm on the Q3730 and Q3750. Check the lifting height of the overhead crane and the shop clear height before selecting a model; a Q3720 and above needs roughly 8 m of clear headroom.
Abrasive economy. Closed-loop recovery with separation before reuse, at 15 to 75 t/h circulating capacity. The separator is the part that keeps the loop honest: fines and broken shot leave, whole shot returns.
Q376 to Q37100: Models, Hook Load and Power
Model | Max. load per hook | Size of cleaning workpiece | Abrasive flow rate | Elevator / separator capacity | Dust extraction air volume | Total power (excl. dust collector) |
Q376 | 600 kg | φ600 × 1,000 mm | 2 × 120 kg/min | 15 t/h | 5,000 m³/h | 19 kW |
Q378 | 1,000 kg | φ800 × 1,500 mm | 2 × 200 kg/min | 22 t/h | 8,000 m³/h | 32.5 kW |
Q3710 | 1,000 kg | φ1,000 × 1,600 mm | 2 × 250 kg/min | 30 t/h | 9,000 m³/h | 36.55 kW |
Q3720 | 2,000 kg | φ1,400 × 2,300 mm | 3 × 250 kg/min | 45 t/h | 15,000 m³/h | 61.27 kW |
Q3730 | 3,000 kg | φ1,600 × 2,200 mm | 3 × 250 kg/min | 45 t/h | 15,000 m³/h | 64.4 kW |
Q3750 | 5,000 kg | φ1,800 × 2,500 mm | 4 × 250 kg/min | 60 t/h | 18,000 m³/h | 78.4 kW |
Q37100 | 8,000 kg | φ3,000 × 3,000 mm | 4 × 250 kg/min | 75 t/h | 20,000 m³/h | 81.5 kW |
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Product Description
How to choose. There are two parameters that decide the model, and they rarely point at the same number: the largest circle the workpiece sweeps when it turns on the hook (the φ figure), and its weight. Take the larger of the two requirements.
Q376, 600 kg, φ600 × 1,000 mm — small and medium castings and forgings, mixed batches, the entry point of the range.
Q378 and Q3710, 1,000 kg — the two most commonly ordered sizes. The Q3710 takes φ1,000 × 1,600 mm, which absorbs most pump bodies, valve bodies and gearbox housings.
Q3720 and Q3730, 2,000 and 3,000 kg — machine tool castings, large gearbox casings, mining and wind components. Note that Q3730 trades diameter for height against the Q3720: φ1,600 × 2,200 mm versus φ1,400 × 2,300 mm.
Q3750, 5,000 kg — heavy single castings and welded frames.
Q37100, 8,000 kg, φ3,000 × 3,000 mm — the largest standard frame; confirm shop height and foundation before quoting.
Where a workpiece exceeds both the hook load and the swing circle, the answer is not a larger standard model but a non-catalogue build. Those are engineered to order and are quoted against the workpiece drawing — no standard model code or parameter set applies.
Where Spinner Hanger Blasting Is Used
Foundries — moulding sand, burnt-in sand and residual gate stubs on grey and ductile iron castings.
Forging shops — oxide scale after forging and after normalising, on shafts, flanges and blocks.
Fabrication — rust, mill scale and weld spatter on welded frames and housings before painting.
Heat treatment — scale left by quenching and tempering, where the part is too heavy for a tumble belt.
Subcontract machining — deburring and edge blending on parts that cannot be tumbled without damage.
One boundary is worth stating. This is a batch machine. A few hundred small castings of 2 to 5 kg each, run continuously, belong on a tumble belt or a roller conveyor, where loading is continuous and nobody pays for a hook cycle. The hanger wins when loads are heavy, awkward or damage-sensitive, and when the batch mix changes every day.
Surface Quality and Acceptance
Cleaning grade is agreed per order against Sa 2½ (ISO 8501-1), assessed by visual comparison with the standard photographs. Where a drawing calls for Sa 2 or Sa 3, that is stated at enquiry and the cycle is set accordingly.
Achievable grade depends on four things, and only two of them are the machine: the condition of the incoming surface (as-cast sand is not the same job as light rust), the abrasive size and type, the cycle time, and the wheel power available. Abrasive is specified by SAE J444 designation — S-330 steel shot for general casting work, G-12 steel grit where an anchor profile is needed for coating. Roughness follows abrasive size, so the coating system on the drawing should be settled before the abrasive is fixed. We recommend a sample blast on your own workpieces before the specification is frozen.
Delivery, Installation and Service
Lead time — 35 to 60 days after receipt of order for standard configurations; oversize frames and non-standard voltage are scheduled separately.
Quotation scope — complete set: blast system, dust collector and the wear parts specific to the model. Freight, insurance, duties and third-party inspection are excluded.
Installation — not included in the equipment price. USD 135 per man-day, with the buyer covering overseas travel. Self-installation is supported with remote guidance.
Warranty — 12 months from the final acceptance certificate. Normal wear parts are excluded.
Voltage and motors — built to the destination standard; motor selection is confirmed in writing at order.
Spares and abrasive — wear parts, steel shot and steel grit supplied from the same plant as the machine.
Why Kingwo
The Q376 to Q37100 range is one parameter standard across seven frames, not seven brochures written by seven people. The same plant supplies the machine, the wear parts, the steel shot and grit, and the dust collector, so a wear-part question does not become a three-supplier conversation. If a workpiece does not fit the table above, it is treated as a non-catalogue build and quoted against the drawing rather than forced into the nearest standard model.
Technical Specifications
Q: What is the lead time for standard models?
A: 35 to 60 days after receipt of order for standard configurations. Oversize frames and non-standard voltage are scheduled separately and stated in the contract.
Q: What does the quote include?
A: The complete set covers the blast system, the dust collector and the wear parts specific to the model. Freight, insurance, duties and third-party inspection are excluded.
Q: How is the installation calculated?
A: Installation is not in the equipment price: USD 135 per man-day, with overseas travel covered by the buyer. Self-installation is supported with remote guidance.
Q: How long is the warranty period?
A: 12 months from the date the final acceptance certificate is signed. Normal wear parts are excluded.
Q: Can the motor voltage be made to comply with our national standards?
A: Yes. Machines are built to the destination standard, and motor selection is confirmed in writing at order so nothing has to be re-wired on arrival.
Q: What is the maximun weight a single hook can lift?
A: 600 kg on the Q376 to 8,000 kg on the Q37100. Anything above that, or larger than φ3,000 × 3,000 mm, is a non-catalogue build quoted against the drawing — the standard table does not apply to it.
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