Press brake bending is a precision sheet metal forming process that uses a punch and die set mounted in a hydraulic or electric press brake to create bends, folds, and complex profiles in flat sheet metal. By precisely controlling bend angle, backgauge position, and stroke depth, press brake bending delivers consistent results across production runs.

At Conwhole, our CNC press brake cells handle sheet metal up to 3,000 mm width and 6 mm thickness. We support air bending, bottom bending, and coining methods — with multi-step bending sequences programmed for complex parts requiring 10+ bends per piece.

Key Takeaways:
– Bending length: Up to 3,000 mm
– Material thickness: 0.5 mm to 6.0 mm (mild steel)
– Angle tolerance: ±0.5° (standard), ±0.25° (precision)
– Supported materials: Mild steel, stainless steel, aluminum, galvanized steel
– Multi-axis CNC backgauge for repeatable positioning
– Prototype to production runs (10 to 50,000+ pieces)

Electrical Enclosures & Cabinets

– Distribution box housings and covers

– Control panel chassis and mounting plates

– Server rack brackets and cabinet frames

– Junction box bodies with knockouts

Construction & Building Hardware
– Steel door frame reinforcements and hinge plates
– Roof flashing, gutter brackets, and flashing angles
– HVAC duct connectors and mounting flanges
– Structural angle brackets and gusset plates

Furniture & Shelving Systems
– Shelf brackets and heavy-duty console supports
– Metal table legs formed from sheet
– Display rack panels and retail fixture brackets
– Storage system side panels and cross beams

Machinery Guards & Covers

– Machine safety guards with folded edges

– Motor cover panels and belt guards

– Equipment access doors and inspection covers

– Press brake-formed chassis bases

Automotive & Vehicle Components

– Trailer mudguard brackets and light mounting plates

– Vehicle seat frame reinforcements

– Battery tray brackets and mounting panels

– Exhaust heat shield panels

Multi-axis CNC backgauge with automatic crowning compensation delivers ±0.25° bend angle tolerance across the full 3,000 mm length, batch after batch.

Programmed multi-step bending sequences handle complex enclosures, chassis, and brackets — reducing handling and ensuring repeatable dimensional accuracy.

We bend materials from 0.5 mm thin stainless steel to 6 mm mild steel plate, with dedicated tooling for each thickness range to ensure sharp, clean bends.

Pre-bend punching and post-bend welding, tapping, and assembly in-house — your bent part arrives ready for installation, not for another supplier.

Q1: What bending methods do you use?
We offer air bending (most common, flexible), bottom bending (higher precision, less springback), and coining (highest precision, minimal springback). Our engineering team selects the optimal method based on your part requirements and material.

Q2: What is the maximum bending length you can handle?
Our CNC press brakes handle sheet metal up to 3,000 mm (118 inches) in width. For parts longer than 3,000 mm, we can use segmented tooling with step bending techniques.

Q3: What materials can you bend?
We bend mild steel (SPCC, Q235), stainless steel (SUS304, SUS316), aluminum (5052, 6061), galvanized steel, and aluminized steel. Material thickness: 0.5 mm to 6.0 mm for mild steel, up to 4.0 mm for stainless steel.

Q4: What is your bending angle tolerance?
Standard tolerance is ±0.5°, and precision tolerance is ±0.25°. We achieve this through CNC-controlled ram positioning, automatic crowning compensation, and programmed springback correction based on material properties.

Q5: Can you bend parts with multiple complex bends?
Yes. Our multi-axis CNC backgauge and programmed bending sequences handle parts with 10+ bends in a single setup. We use staged bending, flipping, and repositioning strategies where required.

Q6: Do you offer pre-bend operations like punching or laser cutting?
Yes. We have in-house punching and laser cutting capabilities. Most bent parts start as laser-cut or punched blanks — we manage the full process from flat sheet to finished bent part.

Q7: How do you handle springback in high-strength materials?
We use programmed overbending compensation based on material type, thickness, and bend radius. For critical parts, we perform trial bends and adjust the program before production runs.

Q8: Do you offer post-bend operations?
Yes. We provide in-house welding (TIG/MIG), hardware insertion (studs, nutserts, standoffs), tapping, deburring, and powder coating. The complete part arrives ready for assembly.

Send us your 2D/3D drawings for a free bending feasibility review and quotation within 24 hours.