Hanger-type blast machine

Overhead conveyor blast machines are among the most flexible blast machine types. They are used for a variety of workpieces for derusting, descaling, final sanding, deburring and finish blasting of sensitive components or for roughening surfaces for subsequent coating.

They are generally offered as batch or continuous systems. However, there are numerous intermediate forms that are orientated towards the rail guidance of the suspension track system. In many cases, different machining processes such as blasting, painting and subsequent drying can be combined with each other using the overhead conveyor system, thereby exploiting enormous rationalisation potential.

Further variation possibilities arise through the use of different blasting racks with the help of which the workpieces are fed into the machine. In many cases, standard blasting frames with discs, baskets or bars can solve the task. However, the requirements of our customers are always clarified in detail and often lead to a customised solution.

Overhead conveyor blast machines Product programme

Our standard programme for overhead conveyor blast machines includes several sizes.

Technical Specifications HT 11-13-2-11 HT 13-17-2-11 HT 13-21-3-11 HT 17-17-2-11 HT 17-23-3-11 HT 17-27-4-11 HT 21-23-3-11 HT 21-23-3-15
max. hook load (kg) 400 400 400 400 800 800 800 800
Alternative max. hook load (kg) 800 800 800 1 600 1 600 1 600 1 600 1 600
Workpiece diameter (mm) 1 100 1 300 1 300 1 700 1 700 1 700 2 100 2 100
Height of blasting area (mm) 1 300 1 700 2 100 1 700 2 300 2 700 2 300 2 300
Turbine output (kW) 2 x 11 2 x 11 3 x 11 2 x 11 3 x 11 4 x 11 3 x 11 3 x 15
Cartridge filter PF 4-09 PF 4-12 PF 4-12 PF 4-12 PF 4-12 PF 4-20 PF 4-20 PF 4-28
Extraction capacity (m3/h) 2 600 4 500 4 500 4 500 4 500 7 500 7 500 10 000
Residual dust content with secondary filter (mg/m3) 1 1 1 1 1 1 1 1

The determination of the suitable machine concept depends, among other things, on the workpieces, the required output and, last but not least, the customer's ideas regarding an optimised production process.

If the task cannot be solved with a standard machine, we will develop a customised machine concept for you.

Please send us your detailed enquiry.
Our experienced team will be happy to help you.

Operating sequence for overhead conveyor blast machines


The workpieces are suspended from a blasting frame or directly from the rotating hooks of the travelling gear and pushed to just in front of the steel machine. An automatic infeed device transports them to the first blasting position.

Once the programme has started, the machine door is automatically closed and locked electro-pneumatically. The workpieces are blasted while rotating in three positions according to the preset blasting time.

The abrasive is kept in circulation and cleaned for continuous use.

The cleaned abrasive is fed from the abrasive hopper to the high-performance turbines via the abrasive dosing device.

At the end of the blasting cycle and after the turbines have come to a standstill, the machine door opens automatically and the workpiece hanger returns to its starting position.

A fan generates the necessary negative pressure to ensure dust-free operation of the blasting systems. The extracted air is cleaned by a filter system.