WYS 28° Bystronic-Type Hemming Pre-Bending Punch for 0.8 mm Sheet, H195 R1
This Bystronic-type upper punch is designed for the first pre-bending stage of hemming 0.8 mm thin sheet metal. It features a 195 mm overall height, 26 mm maximum width, narrow 6 mm working section, 28° angle, R1 tip radius and maximum load capacity of 100 ton/m. The acute first bend prepares the sheet edge for a subsequent flattening operation.
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Description
The WYS 28° Bystronic-type hemming pre-bending punch is designed for the first forming stage of a two-step hemming process for 0.8 mm thin sheet metal.
During the first operation, the 28° punch forms the sheet edge into an acute angle. The workpiece is then repositioned in the corresponding hemming or flattening tool to produce the required closed or flattened edge.
0.8 mm Flat Sheet → 28° Pre-Bending → Repositioning → Flattening → Finished Hem
The punch has a 195 mm overall height, providing additional working space for large panels and rising flanges. Its narrow 6 mm working section offers clearance around the forming area and creates a compact profile suited to this light-gauge sheet application.
Key Features
- Bystronic-type hemming pre-bending punch
- Designed for 0.8 mm thin sheet metal
- 28° acute working angle
- 195 mm overall height
- 26 mm maximum tool width
- 20 mm upper mounting width
- Narrow 6 mm working section
- R1 punch-tip radius
- Maximum rated load of 100 ton/m
- Suitable for two-step sheet-metal hemming
- Continuous and segmented lengths available
- Custom dimensions and profiles available
Technical Specifications
| Specification | Details |
|---|---|
| Tool Type | Hemming Pre-Bending Punch |
| Tooling Style | Bystronic-Type |
| Intended Sheet Thickness | 0.8 mm |
| Overall Height | 195 mm |
| Maximum Width | 26 mm |
| Upper Mounting Width | 20 mm |
| Working Section Width | 6 mm |
| Working Angle | 28° |
| Tip Radius | R1 |
| Maximum Load | 100 ton/m |
| Material | 42CrMo Alloy Steel |
| Primary Function | First-Stage Pre-Bending Before Flattening |
| Available Lengths | Continuous or Segmented |
Typical Applications
- First-stage hemming pre-bending of 0.8 mm sheet
- Closed-edge and safety-edge forming
- Preparation for final edge flattening
- Thin electrical cabinets and control panels
- Appliance panels and metal housings
- Metal doors, covers and access panels
- Decorative and light-gauge sheet-metal components
- Mild steel, stainless steel and aluminum fabrication
Tooling Selection and Customization
The 0.8 mm specification represents the intended application of this configuration. Actual suitability depends on material strength, ductility, lower-die geometry, flattening clearance, bending length and the required finished hem.
WYS can customize the punch angle, height, body width, working-section width, tip radius, mounting interface, tooling length and segmentation. Customers can provide their workpiece drawings, material information and press brake specifications for a complete pre-bending and flattening tooling recommendation.
The stated 100 ton/m is the maximum rated load of the punch. The actual working force must remain within the permissible capacity of the punch, lower die, holder, clamping system and press brake.
This product is manufactured by WYS for compatible Bystronic-type tooling systems. WYS is an independent press brake tooling manufacturer, and no official affiliation with the referenced machine brand is implied.
