Editor's Choice


World’s most powerful pneumatic knocker for heavy-duty industries

January 2024 Editor's Choice Pneumatics & Hydraulics

Pneumatic knockers are a valuable tool in minimising buildup of materials and preventing disruptions in material flow in silos, rotary dryers, coolers, granulators and coating drums. This helps plant managers improve production efficiency and product quality. A pneumatic knocker achieves its high rate of impact power through spontaneously released energy stored in the form of compressed air.

singold produces and sells the world’s most powerful pneumatic knocker. While competing models can at best cover a wall thickness of up to 12 mm, singold’s K160 can knock walls with a thickness of up to 25 mm. This makes it suitable for massive, heavy-duty containers. For example, it is used in the mining industry for large silos and discharge chutes, in the building materials industry for gravel bunker outlets, in the chemical industry for mixing plants, in the lime industry for silos with a capacity of over 200 tons, and in the fertiliser industry.

Supernatural strength

The powerful K160 from singold has an impact energy of 423 Nm. This corresponds to the energy generated when a weight of 42 kg is dropped from a height of 1 metre. This high-impact energy cannot be achieved with human forces, even if a 20 kg sledgehammer were to be used. The reason? The acceleration and final velocity of the impact weight in the knocker are far higher than the final velocity that a human being can generate. The piston in the K160 is designed as a magnet. When it is pulled off the anchor plate, the acceleration is 250 m/s2. When the magnet hits the striker at a speed of 7m/s, accelerations of up to 30 000 m/s2 occur. A human being would need two to three times as much hammer weight as the knocker impact weight to generate the same impact energy as the K160 knocker. To put it into perspective, the knock of a K160 is as strong as if you let a 42-kilogram weight drop from a height of one metre onto your foot!

Knocking at the limits of technology

The pneumatic knockers from singold are true masterpieces of engineering. They create the greatest possible impact with the lowest possible dead weight, testing the limits of technology. The K160 model weighs 62 kg and has compact external dimensions, meaning it can easily be retrofitted into existing plants.

The right knocker for every system

In addition to the K160, singold offers a variety of other knockers. Depending on the operating temperature, application area and wall thickness, models can be adapted to every need. Whether you have very large silos, high temperatures or special hygiene requirements, you will have no problem finding a knocker perfectly suited to your specific needs.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

The AI skills every engineer now needs
Editor's Choice
To use AI responsibly and effectively, you need at least a basic understanding of how they work and where they can fail. Generative AI then becomes a powerful assistant; without it, you are effectively ‘prompting and praying’, exposing yourself to errors and professional embarrassment.

Read more...
How to protect your industrial network
RJ Connect Editor's Choice Fieldbus & Industrial Networking
Network security is no longer a matter of preventing hacking or data breaches. Traditional defence mechanisms for perimeter protection may not fully address internal threats or device-level vulnerabilities alone.

Read more...
Elevating analogue signal processing
Endress+Hauser South Africa Editor's Choice
The RN Series from Endress+Hauser is a powerful and relevant solution for analogue signal processing and conditioning.

Read more...
Lifting the lid on bulk packaging
VEGA Controls SA Editor's Choice
Authorities impose strict requirements on pharmaceutical and cosmetic packaging. Choosing the right instrumentation, such as VEGA’s VEGAFLEX 83 for level measurement, helps manufacturers navigate the challenges with accuracy, reliability and compliance.

Read more...
The next generation of inductive scanning encoder solutions
ATI Systems Editor's Choice Sensors & Transducers
With the launch of the ECI 1122 and EQI 1134 rotary encoders, positioning specialist, HEIDENHAIN has introduced a new benchmark in inductive scanning technology that raises the bar for motion control and precision automation.

Read more...
Machine health monitoring with ifm
ifm - South Africa Editor's Choice IT in Manufacturing
With ifm’s machine health monitoring, early signs of wear can be detected and unexpected failures prevented. Combined with equipment preventive maintenance software, interventions can be scheduled proactively to avoid costly downtime.

Read more...
Powering Africa’s sustainable mining
VEGA Controls SA Editor's Choice Level Measurement & Control
At the 2026 Mining Indaba in Cape Town, one theme rises above all others, progress through precision. For VEGA, a global leader in process instrumentation, this mission aligns perfectly with its core purpose, which is turning measurement into meaningful progress.

Read more...
PCS Global delivers turnkey MCC installation in Botswana
PCS Global Editor's Choice PLCs, DCSs & Controllers
PCS Global is delivering a turnkey containerised MCC installation for a major copper mining operation in Northwest Botswana.

Read more...
SEW-EURODRIVE transforms drivetrain uptime
SEW-EURODRIVE Editor's Choice Motion Control & Drives
The DriveRadar IoT Suite from SEW-Eurodrive is an ideal solution for industrial condition monitoring. This powerful ecosystem of intelligent sensors, edge devices and cloud-based analytics ensures that customers have full visibility and control of their operations.

Read more...
PC-based control for flat wire motors for electric vehicles
Beckhoff Automation Editor's Choice Motion Control & Drives
Special machine manufacturer, ruhlamat Huarui Automation Technologies has unveiled the second generation of its mass production line for flexible stators with bar winding (pins). This enables an extremely short production cycle and line changeover times, supported by PC- and EtherCAT-based control technology from Beckhoff.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved