![](https://www.ht-pt.com/wp-content/uploads/metallbalgmaschinen_header-1.jpg)
Using machines by the H&T ProduktionsTechnologie, metal bellows can be produced from single- or multi-layer tubes with various manufacturing techniques for a wide range of applications in different business lines.
Moreover, we manufacture special-purpose machines according to the customer’s requirements, modified for the required part quantity, dimensions, and accuracies.
The techniques implemented are:
- Hydroforming
- Elastomer forming
- Mechanical expanding
- Roll forming
Metal bellows from 12 to 5.000 mm diameter can be produced on these machines.
![](https://www.ht-pt.com/wp-content/uploads/metallbalgmaschinen_header-1.jpg)
![](https://www.ht-pt.com/wp-content/uploads/wellschlauchmaschinen-1.jpg)
Machines for corrugated hose production
Fully automated manufacturing of flexible metal tubes (corrugated hoses) by continuous, hydraulic expressing segments by segment.
- Machine of the “WSM“ type in horizontal design
- Forming of corrugated segments with several corrugations per shaping
- Corrugated segments and cylindrical segments can be programmed in arbitrary sequence
- Automated tube feeding
- Automated delivery of finished parts on roll table for manual removal
- Manufacturing of corrugated hoses up to 6.000 mm length (depends on nominal widths)
- Ingoing material length from 2.000 to 13.000 mm
WSM | |
Diameter | 16 – 80 mm |
Wall thickness | 0,15 – 1,0 mm |
![](https://www.ht-pt.com/wp-content/uploads/wellschlauchmaschinen-1.jpg)
![](https://www.ht-pt.com/wp-content/uploads/auspressmaschinen-1.jpg)
Hydroforming (Hydraulic extrusion) machines
High-yield machines to produce metal bellows.
- Machine series “APMY“
- Complete forming by hydraulic inner pressure (hydroforming)
- Sleeves/ bellows are manually removed and inserted
- Diameter-related die plates
- Corrugation of a complete metal bellows in one operation
- Production of single- and multi-layer bellows
- Up to 30 corrugations per bellows
- End contour by means of specially-shaped supporting die plates
- Combination of straight tube segments with corrugated segments
Hydroforming (Extrusion) machines | APMY 100 | APMY 100 S |
Diameter range | 40 – 100 mm | 14 – 100 mm |
Wall thickness | 0,2 – 1,2 mm | 0,2 – 1,2 mm |
Inner pressure | 200 bar | to 500 bar |
Max. tube length | to 1000 mm | to 1000 mm |
![](https://www.ht-pt.com/wp-content/uploads/auspressmaschinen-1.jpg)
![](https://www.ht-pt.com/wp-content/uploads/elastomerformmaschinen-1.jpg)
Elastomer forming machines
Machines to produce metal bellows for compensators from tubes, for small to medium batches.
- Machine series “APME“
- Shaping of single corrugations by widening the elastomer
- Low-cost dies
- Horizontal design
- Finished tube lengths of max. 600 mm
- Corrugated hose segments and cylindrical segments can be programmed in arbitrary sequencer
- Different corrugation height values can be manufactured within a single bellows
APME 100 | APME 250 | |
Diameter | 40 – 120 mm | 80 – 250 mm |
![](https://www.ht-pt.com/wp-content/uploads/elastomerformmaschinen-1.jpg)
![](https://www.ht-pt.com/wp-content/uploads/expandingmaschinen-1.jpg)
Expanding machines
Machines for small and medium-sized batches to produce metal bellows from tubes for compensators.
- Machine series “EXPAN“
- Forming of individual corrugations by means of a mechanical expanding technique
- Sensors to identify bellows edges, motor-controlled re-adjustment of the mounting table height
- Integrated swivel motion of the basic die to avoid pressure marks
- Stable welded steel construction for installation in the machine pit (platform also alternatively possible)
- Profiling of individual corrugations by follow-up profiling on the profiling machine of the PRM type
- Rapid and easy die change
Basic dies can be adapted in a customized manner to the diameter range required; within this range, the easy exchange of forming segments offers great flexibility.
EXPAN 500 | Expan 1600 | Expan 3000 | |
Diameter | 100– 500 mm | 350 – 1600 mm | 1400 – 3000 mm |
Wall thickness | 1×0,3 – 5×1,0 mm | 1×0,5 – 6×1,0 mm | 1×1,0 – 6×1,0 mm |
Cycle time / corrugation | ca. 30 – 45 s | ca. 30 – 45 s | ca. 45 – 90 s |
![](https://www.ht-pt.com/wp-content/uploads/expandingmaschinen-1.jpg)
![](https://www.ht-pt.com/wp-content/uploads/profiliermaschinen-1.jpg)
Profiling machines
- Automated procedure
- Exchange parts of simple design
- Axial feeding of the profiling rollers during profiling possible
- Adjustable bellows mounting
PRM 800 | PRM 1600 | PRM 3000 | |
Diameter | 100 – 800 mm | 350 – 1600 mm | 1400 – 3000 mm |
Wall thickness | 1×0,3 – 5×1,0 mm | 1×0,5 – 6×1,0 mm | 1×1,0 – 6×1,0 mm |
Bellow mounting | horizontal | horizontal | vertikal |
![](https://www.ht-pt.com/wp-content/uploads/profiliermaschinen-1.jpg)