HIROKI CO., LTD. runs six automatic stamping presses (15, 20, 40, 60, 80, and 110 tons), all with automatic feed, covering material from 0.2 to 6.0 mm (0.008" to 0.236") thick. Single-stage, progressive, and compound die development is integrated with deburring, surface grinding, tapping, riveting, surface finishing, assembly, and inspection. This page organizes HIROKI's published equipment and process capabilities into capability tables so buyers and engineers can quickly judge whether a part is a good fit.
Key Takeaways
- HIROKI runs six automatic presses (15, 20, 40, 60, 80, and 110 tons), all with automatic feed.
- Material thickness is 0.2–6.0 mm (0.008"–0.236"), with tolerances within ±0.05 mm (±0.002") depending on design and material.
- Single-stage, progressive, and compound dies cover everything from prototypes to high-volume production.
- MOQ, lead time, and capacity are evaluated per part rather than published as fixed numbers.
HIROKI was founded in 1950 and is one of Taiwan's earliest companies in metal processing and die design. The capabilities below reflect HIROKI's current equipment and processes; items that depend on the individual part are covered in Section 5.
HIROKI Metal Stamping Capability Summary
The table below summarizes HIROKI's capabilities from stamping and tooling through secondary operations and inspection, and it's the fastest way to scope a project.
| Capability | HIROKI |
|---|---|
| Press tonnage | 15, 20, 40, 60, 80, and 110-ton automatic presses (6 total) |
| Material thickness | 0.2–6.0 mm (0.008"–0.236"), depending on press |
| Dimensional tolerance | Within ±0.05 mm (±0.002"), depending on part design and material |
| Die types | Single-stage, progressive, compound |
| Tooling development | CAD/CAM design, wire EDM, CNC milling, heat treatment, and assembly |
| Feed | Automatic feed systems |
| Prototypes and low volume | Yes (15-ton prototyping, T1 die tryout, 3D-printed concept models) |
| High-volume production | Yes (continuous production with automatic feed) |
| Secondary operations | Deburring, surface grinding, tapping, riveting |
| Tapping range | Metric M1.6–M16; UNC/UNF inch series |
| Surface finishing | Electroplating, painting, powder coating, anodizing, black oxide (through partner network) |
| Assembly | Yes (screw fastening, press-fit, clinch hardware) |
| Inspection | CMM, optical projector, optical image sorting machine, go/no-go gauges, three-wire method |
| Quality documentation | FAI report; lot-level QC report with shipment |
| Outgoing sampling | AQL or customer-specified; 100% inspection available on request |
What Presses Does HIROKI Run, and What Is Each Tonnage For?
HIROKI's six automatic presses range from 15 to 110 tons, covering prototyping, precision small parts, medium-gauge production, and high-force forming. Press selection depends on required blanking force, material thickness, draw depth, and volume.
| Tonnage | Typical Applications | Material Thickness |
|---|---|---|
| 110-ton | High-force forming, deep drawing, large structural parts | 4.0–6.0 mm (0.157"–0.236") |
| 80-ton | Compound die work, structural components, power tool parts | 2.0–4.0 mm (0.079"–0.157") |
| 60-ton | Primary production press for medium-gauge parts | 1.2–3.2 mm (0.047"–0.126") |
| 40-ton | Medium-size production with tight tolerances | 0.5–2.0 mm (0.020"–0.079") |
| 20-ton | Precision small components | 0.5–2.0 mm (0.020"–0.079") |
| 15-ton | Prototyping, micro spring clips, terminals | 0.2–1.0 mm (0.008"–0.039") |
2.1How Is Press Tonnage Selected?
Press tonnage must exceed the part's required blanking and forming force with a safety margin. During stamping process planning, HIROKI engineers match each part to the right press in the 15–110 ton fleet based on blanking force, draw depth, and volume. The same part may run on a different press depending on program volume or die design.
2.2Process Monitoring
HIROKI's presses are equipped with stroke monitoring and load sensors, backed by periodic measurement and preventive die maintenance. These controls help catch dimensional drift caused by die wear, feed misalignment, or material variation early. See metal stamping services for more detail.
What Tooling and Materials Can HIROKI Handle?
3.1Die Types
HIROKI plans single-stage, progressive, or compound dies based on part complexity and volume.
- Single-stage dies: One operation per stroke, suited to simple parts or lower volumes.
- Progressive dies: Paired with automatic feed to perform piercing, bending, and forming across multiple stations, suited to high volumes, and able to integrate in-die riveting or in-die tapping.
- Compound dies: Combine piercing, embossing, cutting, bending, and shallow drawing in a single stroke.
3.2Tooling Development
HIROKI's tooling development covers die design, machining, heat treatment, and tryout. Dies are designed in CAD/CAM, components are cut with wire EDM and CNC milling, and critical components are heat-treated for hardness and die life before experienced toolmakers assemble and tune the die. During development, an infinity3dp X2 Pro 3D printer produces concept models and inspection fixtures. Learn more about 3D printing.
3.3Common Materials
HIROKI regularly stamps carbon steel, stainless steel, aluminum, and copper alloys.
| Category | Common Grades (U.S. equivalents are approximate) |
|---|---|
| Carbon steel | SPCC cold-rolled (≈ ASTM A1008 CS), SPHC hot-rolled (≈ ASTM A1011 CS), S45C (≈ AISI 1045), high-strength steel |
| Coated steel | Galvanized steel |
| Stainless steel | SUS304 (AISI 304), SUS430 (AISI 430) |
| Aluminum | 5052, 6061 |
| Copper alloys | Copper, phosphor bronze |
Which Secondary Operations and Inspections Does HIROKI Offer?
After stamping, HIROKI can complete deburring, surface grinding, tapping, riveting, surface finishing, and assembly, with quality gated through FAI, IPQC, and OQC.
| Operation | How HIROKI Handles It | Learn More |
|---|---|---|
| Deburring | Vibratory, tumble, magnetic, and manual deburring | Deburring |
| Surface grinding | For parts with flatness or thickness tolerances | Precision grinding |
| Tapping | Machine or in-die tapping; M1.6–M16, UNC/UNF | Tapping |
| Riveting | In-die pierce-and-rivet; clinch nuts and studs | Riveting |
| Surface finishing | Plating, painting, powder coating, anodizing, black oxide (partner network) | Surface finishing |
| Assembly | Screw fastening, press-fit, clinch hardware, mistake-proofing fixtures | Parts assembly |
For inspection, HIROKI performs full-dimension first article measurement with a CMM, optical projector, and optical image sorting machine and issues an FAI report. QC staff run scheduled in-process checks (IPQC), and outgoing inspection (OQC) follows AQL or your specified sampling plan, with a QC report available for each lot.
Which Items Are Quoted Case by Case?
Minimum order quantity, lead time, capacity, and specific certification requirements vary widely with part design, material, and tooling, so HIROKI evaluates them per project rather than publishing one-size-fits-all numbers. This avoids mismatched expectations at the quoting stage and lets engineers give recommendations based on your actual drawing.
| Item | How It's Evaluated |
|---|---|
| Minimum order quantity (MOQ) | Based on part, die type, and material |
| Lead time | Based on tooling needs, secondary operations, and quantity |
| Capacity | Based on required tonnage, die stations, and scheduling |
| Specific tolerances | Confirmed against critical dimensions and measurement method |
| Customer-specified documentation | Confirmed against required report format and characteristics |
Frequently Asked Questions
Select a question to expand the answer
Q1What is the thickest material HIROKI can stamp?
Based on HIROKI's published press data, the 110-ton press handles 4.0–6.0 mm (0.157"–0.236") material for high-force forming, deep drawing, and large structural parts. At the thin end, the 15-ton press handles material from 0.2 mm (0.008") for micro spring clips and terminals. Actual capability depends on material grade and part geometry.
Q2Does HIROKI take on prototypes and low-volume runs?
Yes. HIROKI uses its 15-ton press for prototyping, produces T1 tryout samples with an FAI report, and can 3D-print concept models early in development so you can check form and fit first. Prototype quantity and cost are quoted per part and tooling.
Q3What tolerance can HIROKI hold on stamped parts?
HIROKI's published stamping tolerance is within ±0.05 mm (±0.002"). Achievable tolerance depends on part design, material, and forming method. Call out critical dimensions on your drawing so engineers can confirm the measurement method and feasibility.
Q4Is surface finishing done in-house?
Surface finishing is performed through HIROKI's long-term partner network and includes electroplating, painting, powder coating, anodizing, and black oxide. HIROKI manages the spec, scheduling, and inspection, so you work with a single point of contact.
Q5What is HIROKI's minimum order quantity?
HIROKI evaluates MOQ case by case based on part design, die type, and material, so there's no fixed number. Send your drawing, material, thickness, and estimated annual usage, and the sales and engineering team will respond with a recommendation.
Check Your Part Against the Capability Table
If your part falls within 0.2–6.0 mm (0.008"–0.236") material, calls for progressive or compound die production, and needs tapping, riveting, finishing, or assembly, send your drawings to HIROKI. We'll match your requirements to our equipment and processes and return a stamping process plan and quote. See all processing services.
Include in your RFQ:
- 2D/3D CAD files
- Material grade and thickness
- Estimated annual usage
- Secondary operations and finish
- Critical dimensions and tolerances