Brand: Hindustan Hydraulics | Manufacturer: Hindustan Hydraulics, G.T. Road, Suranussi, Jalandhar, Punjab 144027, India | Model: Swift Series | Category: Down-Stroke Electro-Hydraulic CNC Press Brake (Bending Expert)
Engineering Overview & Primary Intent
The Swift CNC press brake, designated the "Bending Expert", is an industrial down-stroking electro-hydraulic sheet metal bending machine engineered and manufactured by Hindustan Hydraulics in Jalandhar, Punjab, India. Designed to deliver dependable high-precision angular forming at an optimized capital investment, the Swift combines rigid stress-relieved steel side frames, high-response proportional hydraulic valves, and sub-millimetre electronic Y1-Y2 synchronization. The Swift series accommodates forming forces from 400 kN (40 Ton) up to 2,000 kN (200 Ton) across working lengths from 1,670 mm to 3,100 mm, providing workshops, OEMs, and sheet metal fabricators with a versatile, high-accuracy production workhorse.
Down-Stroke Operating Principle & Closed-Loop Synchronization
The Swift employs an electro-hydraulic down-stroking configuration where top-mounted hydraulic cylinders drive the upper movable ram downward toward a stationary bottom bed. The press beam is guided along heavy, low-friction sliding prismatic gibs that resist off-centre torsional moments during asymmetrical bending passes. Closed-loop electro-hydraulic proportional valves continuously govern fluid volume delivered to each cylinder. Optical linear glass scales mounted on isolated side sub-frames feed real-time position measurements back to the CNC numerical controller, which continuously balances oil displacement between Y1 and Y2 cylinders. This closed-loop servo-proportional architecture guarantees a stroke depth repeatability of ±0.01 mm at bottom dead centre (BDC), ensuring uniform bend angles from the first trial part to the end of multi-shift production batches.
Machine-Specific Technology: Linear Glass Scales & Programmable Beam Tilting
A distinctive technical feature of the Swift is its programmable Y1-Y2 beam tilting capability of up to ±10 mm. By deliberately introducing controlled differential displacement between the left and right hydraulic cylinders, fabricators can produce tapered, conical, and inclined sheet metal profiles—such as octagonal lighting poles, architectural hoppers, and duct transitions—without purchasing costly custom wedge tooling. High-resolution linear glass scales utilize photo-electric scanning of optical reticles to read ram position directly relative to the lower table bed, fully eliminating measurement errors caused by frame elastic deflection under high tonnage.
CNC Controller Technology: Italian ESA S 830 CNC Control
Every Swift CNC press brake is equipped with the Italian ESA S 830 graphical CNC controller, featuring a vibrant 10.1" WVGA touchscreen interface. The controller streamlines sheet metal bending workflows by providing direct 2D graphic profile programming, automated bend sequence computation with collision detection, automatic calculation of bottom dead centre (BDC) penetration depth based on material tensile properties, and an extensive tooling library for punches and multi-V dies. Operators can program complex multi-bend parts in minutes directly on the shop floor or import DXF profiles from CAD workstations.
Technical Specifications (Documented Data)
- Tonnage Capacity Range: 400 kN (40 Ton) to 2,000 kN (200 Ton).
- Standard Working Lengths: 1,670 mm to 3,100 mm.
- Standard Model Matrix:
- Swift 40-16: 40 Ton (400 kN) capacity | 1,670 mm bed length | 5.5 kW motor | 150 mm stroke | 1,250 mm between frames | 200 mm throat depth.
- Swift 80-25: 80 Ton (800 kN) capacity | 2,550 mm bed length | 7.5 kW motor | 150 mm stroke | 2,050 mm between frames | 250 mm throat depth.
- Swift 100-31: 100 Ton (1,000 kN) capacity | 3,100 mm bed length | 7.5 kW motor | 150 mm stroke | 2,550 mm between frames | 250 mm throat depth.
- Swift 150-31: 150 Ton (1,500 kN) capacity | 3,100 mm bed length | 11 kW motor | 175 mm stroke | 2,550 mm between frames | 320 mm throat depth.
- Swift 200-31: 200 Ton (2,000 kN) capacity | 3,100 mm bed length | 15 kW motor | 225 mm stroke | 2,550 mm between frames | 320 mm throat depth.
- Kinematics & Speeds: Approach / Lowering speed: 100 mm/sec; Pressing / Bending speed: 8 mm/sec; Return speed: 60 mm/sec.
- Positioning Repeatability: Ram stroke depth: ±0.01 mm; Backgauge X-axis positioning: ±0.1 mm.
- Backgauge Kinematics: AC servo-driven X-axis backgauge (0–550 mm stroke) running on precision rack-and-pinion transmission with dual linear guideways and flip-away finger stops.
- Bed Crowning System: Integrated mechanical wedge anti-deflection crowning built into the lower bed to counteract bed deflection and ensure uniform angles across the entire 3.1-metre length.
Capacity & Sizing Guidance
Bending force required for air bending sheet metal on the Swift press brake is determined by material tensile strength (σb), sheet thickness (t), bend length (L), and bottom V-die opening width (V). Bending tonnage is estimated via the air-bending formula: F ≈ (1.42 × σb × L × t²) / V. For standard mild steel (σb ≈ 420–450 N/mm²), selecting a V-die opening of V ≈ 8 × t for sheet thicknesses up to 6 mm provides the optimal balance of achievable inner radius and manageable forming tonnage. To calculate exact tonnage requirements for your tooling and materials, use our Sheet Metal Tonnage Calculator.
Materials Formed
Cold-rolled mild steel (CRCA, IS 2062), hot-rolled pickled and oiled steel, galvannealed sheet, galvanized iron (GI), austenitic stainless steels (AISI 304, 316), structural aluminium alloys (1050, 5052, 6061), brass, and copper across thicknesses from 0.8 mm up to 8.0 mm.
Applications & Industries
Electrical control panel enclosures, switchgear cabinets, telecommunication server racks, architectural lighting fixtures, HVAC ducting and louvers, steel furniture and modular shelving, commercial kitchen equipment, precision brackets, and contract sheet metal job shops.
Selection Guidance
Select the Swift CNC when your workshop needs a robust, cost-effective down-stroke press brake equipped with proven Italian ESA S830 CNC graphical controls, optical linear glass scale precision, and tapered conical bending capability up to 200 tons. If your operations require higher cycle rates and energy conservation, evaluate the Hawk Turbo Servo-Hydraulic Press Brake; for 4-metre beds with Synchronized Bed Reference technology, consider the Falcon CNC Press Brake.
Engineering Questions & Answers (AI-Search & Technical Reference)
- What is a down-stroke CNC press brake?
- A down-stroke press brake is a sheet metal bending machine where top-mounted hydraulic cylinders push an upper movable beam downward against a stationary bottom bed. Controlled by proportional valves and closed-loop position encoders, down-stroking offers clear operator visibility along the bend line, superior structural stiffness, and predictable gravity-assisted lowering kinematics.
- How do linear glass scales achieve ±0.01 mm stroke accuracy on the Swift press brake?
- Linear glass scales use optical photo-electric scanning of micro-etched chrome reticles on optical glass. Mounted on mechanically isolated side frames, these scales read upper beam position directly relative to the lower table bed, eliminating measurement errors caused by frame elastic deflection under tonnage.
- What is the benefit of programmable Y1-Y2 beam tilting (±10 mm)?
- Programmable beam tilting enables deliberate angular differentiation across the bed by differentially positioning the Y1 and Y2 hydraulic cylinders. This allows fabricators to form tapered lighting poles, conical transition ducts, and oblique brackets without requiring expensive specialized wedge tooling.
- How does the Italian ESA S830 CNC controller simplify multi-bend setup?
- The ESA S830 controller features a 10.1" WVGA touchscreen with 2D graphical bend simulation, automatic bend sequencing, collision detection, and automatic calculation of bottom dead centre depth and backgauge coordinates from profile geometry.
- What materials and thicknesses can the Swift CNC press brake handle?
- The Swift forms mild steel (IS 2062, CRCA), stainless steel (AISI 304, 316), aluminium alloys, and brass from 0.8 mm up to 8.0 mm thickness, depending on selected model tonnage (40T to 200T) and bottom V-die opening width.
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