Series: SK, SX, AH, ZC
Housing: High‑strength cast‑aluminum alloy, lightweight
Working pressure: 0.3‑0.6 MPa
Control: Operated by 3‑way solenoid valve
Shanghai Mac is a leading Air Knocker manufacturer and supplier.
Air Knocker, also known as silo pneumatic knocking hammer, is installed on the outer wall of silos and hoppers. It uses compressed air to drive the internal piston to generate periodic impact force and strike the silo wall. This equipment shakes off powder materials sticking to the inner wall of bins, prevents material bridging and caking, and removes blockages during discharging. It works at air pressure of 0.3-0.6 MPa, with adjustable impact force and strike interval. It adopts flange mounting method and does not require cutting holes on the silo body. It can be used in cement, chemical, fertilizer, food and pharmaceutical industries for bulk solid storage and discharging systems. It can operate normally under dusty, humid and explosion-proof working environments. The product has passed about 2 million cycles of endurance test and requires little daily maintenance.
If you want to know more about our pneumatic equipment products or Air Knocker price please feel free to contact us, we will reply you within 24 hours.
Technical Information of Air Knocker:
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Technical Parameters of Air Knocker |
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|
Model |
Working Pressure (MPa) |
Strike Cycle (times/min) |
Air Consumption (L/stroke) |
Impact Force |
Hammer Weight (lbs) |
Net Weight |
|
SX-30 |
0.3–0.7 |
1–30 |
0.05–0.15 |
5.5–13 |
below 1 |
1.25 |
|
SX-40 |
0.3–0.7 |
1–25 |
0.15–0.35 |
9.5–22 |
1–1.5 |
2.2 |
|
SX-60 |
0.4–0.7 |
1–20 |
0.30–0.55 |
20–49 |
1.5–3 |
5.35 |
|
SX-80 |
0.4–0.7 |
1–15 |
0.40–1.30 |
55–110 |
3.0–5.5 |
11.2 |
|
SX-100 |
0.4–0.7 |
1–10 |
0.85–1.60 |
100–220 |
7.5–12 |
12.05 |
Packaging of Air Knocker:
Standard Packaging
Each air knocker is wrapped with anti-rust paper and covered with foam padding to avoid scratches and impact damage. Multiple units are packed into thick export cartons with inner foam blocks for fixation. Cartons are stacked on fumigated wooden pallets and wrapped with stretch film for stability during transit.
Shipping
We support FCL and LCL sea freight, air freight and express delivery, selected according to order quantity and destination. Available trade terms include EXW, FOB and CIF. Other terms may be available upon request. Shipping costs are calculated based on cargo volume, gross weight, destination and selected transportation method.
Lead Time
Samples: 3–7 working days
Standard orders: 15–25 working days
Customized orders: 25–40 working days

Q1: How long does sample preparation take?
A: 3–7 working days.
Q2: What is the MOQ and production lead time?
A: MOQ is 1 set. Standard orders take 15–25 working days.
Q3: What certifications are available?
A: ISO9001 and CE certificates can be provided.
Q4: What air pressure is required for the air knocker?
A: Working air pressure ranges from 0.3 MPa to 0.6 MPa.
Q5: What information do you need to select the proper air knocker for my silo?
A: Silo material, silo wall thickness, powder type and required impact force.