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HM239 | Bending Punch Tool Desing
Take advantage of the HM239 Special Press Brake tooling to bend and make hemming metal sheets mentioning in following figure to have the right angle tools designed for your job fitting with proper thickness of metal sheet and Material of the bend Please feel free to contact our sales.
- Amada™
- Baykal™
- Accurl™
- Most Turkish and Chinese Machines
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We use "Ahwaz" Clamping Architecture in HM239
For More information on Ahwaz Clamping Design and the schematic Figure you may click on the following link
Rather than HM239 We serve Wide Range of Press Brake Tools with Various Clamping Styles
TFI Co. manufactures the HM239 as a precision special tooling solution for press brake bending of sheet metal, delivering accurate hemming and complex profiles in a single setup. Sheet metal fabricators and production shops use this hardened steel tool to overcome material springback, cracking, and inconsistent angles that standard punches and dies create on mild steel, stainless, and aluminum. It eliminates secondary operations and excessive rework while maintaining tight tolerances across high-volume runs. Customers achieve a measurable 25 percent reduction in cycle times and extend tooling life by up to 40 percent compared with generic alternatives. Produced since 1965 in our dedicated facility, the HM239 forms part of our range of more than 12,000 industrial tooling types shipped to partners in over 50 countries, ensuring reliable performance under repeated high-tonnage cycles and seamless compatibility with existing press brake systems.
Quick Summary
Performance Data
| Material Grade | 42CrMo4 per DIN 1.7225 |
|---|---|
| Hardness (HRC) | 52 HRC per ISO 6508 |
| Dimensions | 550 mm length x 85 mm width x 145 mm height |
| Tolerance | ±0.01 mm per ISO 2768-m |
| Edge Geometry | Precision acute punch with 30 degree angle and 1.5 mm tip radius |
| Surface Finish | Ra 0.4 μm ground finish |
| Compatible Machines | Amada, Trumpf, Bystronic, LVD |
| Operating Conditions | 250 ton maximum bending force on mild steel up to 3 mm thick |
| Heat Treatment | Induction hardened and stress relieved |
| Production Standard | per TFI Co. production standard |
- Material Grade
- 42CrMo4 per DIN 1.7225
- Hardness (HRC)
- 52 HRC per ISO 6508
- Dimensions
- 550 mm length x 85 mm width x 145 mm height
- Tolerance
- ±0.01 mm per ISO 2768-m
- Edge Geometry
- Precision acute punch with 30 degree angle and 1.5 mm tip radius
- Surface Finish
- Ra 0.4 μm ground finish
- Compatible Machines
- Amada, Trumpf, Bystronic, LVD
- Operating Conditions
- 250 ton maximum bending force on mild steel up to 3 mm thick
- Heat Treatment
- Induction hardened and stress relieved
- Production Standard
- per TFI Co. production standard
Where It Works
- Automotive Manufacturing Creating secure hems on 1.2mm aluminum body panels for vehicle doors using Amada HFE-M2 press brakes at 150 parts per hour.
- HVAC Equipment Precision 180-degree hemming of 0.8mm galvanized steel duct sections on Trumpf TruBend 5130 machines for airtight joints.
- Aerospace Fabrication Edge hemming of 2mm aircraft-grade aluminum interior panels on Bystronic Xpert 150 press brakes meeting tight tolerance requirements.
- Electrical Enclosures Forming safety hems on 1.5mm mild steel control cabinet frames using LVD Easy-Form press brakes for smooth, burr-free edges.
- Agricultural Machinery Bending and hemming 3mm high-tensile steel fenders for tractors on Cincinnati Proform presses at 80 components per shift.
- Architectural Metalwork Producing weather-resistant hems on 2mm stainless steel cladding panels using Safan Darley servo-electric press brakes for high-rise facades.
- Renewable Energy Hemming aluminum frames for solar panel arrays on Ermaksan CNC press brakes processing 4-meter lengths at high volume.
- Metal Furniture Production Creating rolled hems on 1mm cold-rolled steel chair frames and table legs with Durma AD-S press brake tooling for clean finish edges.
Sizes & Grades
42CrMo4 Grade
Standard material hardened to 52-56 HRC providing excellent wear resistance and toughness for high-precision sheet metal bending applications.
H13 Tool Steel
Premium hot-work tool steel option offering superior heat checking resistance for demanding, high-volume production environments.
TiN Coated
Titanium Nitride coating significantly reduces friction, prevents material adhesion, and extends service life up to three times compared to uncoated tools.
Amada & Trumpf Compatibility
Precision engineered to fit Amada, Trumpf, Bystronic, and LVD press brake machines using special tooling stations.
Custom from Drawing
TFI Co. manufactures HM239 special toolings to customer drawings with exact tolerances, available in lengths from 50mm up to 1000mm sectional.
Nitrided Version
Gas or plasma nitriding surface treatment creates a hardened case depth of 0.2-0.4mm for maximum abrasion resistance in stainless steel and aluminum bending.
42CrMo4 Grade
Standard material hardened to 52-56 HRC providing excellent wear resistance and toughness for high-precision sheet metal bending applications.
H13 Tool Steel
Premium hot-work tool steel option offering superior heat checking resistance for demanding, high-volume production environments.
TiN Coated
Titanium Nitride coating significantly reduces friction, prevents material adhesion, and extends service life up to three times compared to uncoated tools.
Amada & Trumpf Compatibility
Precision engineered to fit Amada, Trumpf, Bystronic, and LVD press brake machines using special tooling stations.
Custom from Drawing
TFI Co. manufactures HM239 special toolings to customer drawings with exact tolerances, available in lengths from 50mm up to 1000mm sectional.
Nitrided Version
Gas or plasma nitriding surface treatment creates a hardened case depth of 0.2-0.4mm for maximum abrasion resistance in stainless steel and aluminum bending.
Technical Q&A
What is the HM239 special tooling?
The HM239 is a precision hemming tool manufactured by TFI Co. for press brake sheet metal bending. It creates tight 180-degree flat hems on materials up to 2mm thick with exceptional accuracy. Made from hardened tool steel heat-treated to 58-62 HRC, this special tooling delivers consistent results in high-volume fabrication of enclosures, panels, and automotive parts since 1965.
How does the HM239 tool function in metal bending?
The HM239 operates in two stages: an initial acute angle bend followed by a flattening pass to form the hem. Positioned in the press brake, it folds the sheet edge precisely without cracking. TFI Co. engineered its geometry to minimize marking on visible surfaces while maintaining tight tolerances for mild steel, stainless, and aluminum sheets.
Can the HM239 be used with Amada and Trumpf presses?
Yes, the HM239 is compatible with Amada and Trumpf press brakes using appropriate tang adapters from TFI Co. It meets European and Japanese style holder specifications for secure clamping and alignment. Confirm your machine tonnage capacity and tool holder type prior to use to achieve optimal hemming performance and safety.
What is the maximum thickness capacity of the HM239?
The HM239 handles maximum material thickness of 2mm for mild steel and 2.5mm for aluminum. Best results occur between 0.5mm and 1.8mm where hem quality remains flawless. TFI Co. provides tonnage calculation charts specific to material type to prevent overloading and ensure long-term tooling accuracy.
Does the HM239 require special maintenance procedures?
The HM239 requires regular cleaning to remove debris and light lubrication of contact surfaces after each shift. Inspect for wear every 8,000 cycles. TFI Co. recommends professional regrinding services when edge radius increases beyond 0.2mm. Proper care extends service life beyond 50,000 bends in typical sheet metal applications.
How long does delivery take for the HM239?
TFI Co. ships in-stock HM239 tooling within 5-7 business days to over 50 countries. Custom configurations require 12-18 days production time. We provide full tracking and expedited options for urgent orders. Contact our sales team for current availability, pricing, and delivery estimates tailored to your location.
Industry Credentials
TFI Co. delivers trusted press brake tooling solutions with over 50 years of manufacturing expertise serving fabricators in 50 countries
- Section
- Special Toolings
- Updated
- June 12, 2026
- Reading time
- 6 min read
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