Power Press Series
Pneumatic Power Press
High-precision pneumatic power press engineered for clean, fast and energy-efficient stamping operations. Air-powered clutch & brake system delivers instant engagement, ultra-fast stopping and zero oil contamination — ideal for high-speed punching, blanking, bending and light forming in demanding production environments. Available from 25 to 400 tons across the JH21 series.
- Tonnage Range 25 – 400 Tons
- Stroke Rate up to 120 SPM
- Pneumatic Clutch & Brake
- CE & ISO Certified
Best Seller
15+
Years Experience
80+
Countries Served
5000+
Presses Delivered
CE&ISO
Certified Quality
Product Overview
Pneumatic Precision. Clean Power for High-Speed Stamping.
The KAVDO Pneumatic Power Press (JH21 Series) features a dry pneumatic clutch & brake on the crankshaft for instant engagement, fast stopping and zero oil contamination — ideal for electronics, food packaging and medical device manufacturing.
Built on a high-rigidity welded steel C-frame with six-sided rectangular slide guides, it combines pneumatic responsiveness with mechanical precision for repeatable accuracy at high stroke rates.
- Dry pneumatic friction clutch & brake — zero oil contamination
- Ultra-fast <50 ms engagement and emergency stopping
- Hydraulic overload protection with automatic reset
- Welded steel C-frame with FEA-optimized ribbed reinforcement
- Motorized slide adjustment for rapid die height changes
Performance Highlights
Key Advantages
The KAVDO pneumatic power press combines air-powered precision control with robust mechanical stamping capability — delivering superior speed, safety and cleanliness in one production-ready machine.
Instant Pneumatic Response
The dry pneumatic clutch & brake system engages and stops in under 50 milliseconds — significantly faster than wet clutch systems. This ultra-fast response enables precise single-stroke operation, reliable top-dead-center stopping and safe high-speed continuous cycling at up to 120 SPM.
Zero Oil Contamination
Unlike wet-type clutch presses that require oil bath lubrication, the dry pneumatic system operates without clutch oil — eliminating the risk of oil mist, leakage and workpiece contamination. Ideal for clean-room environments, food-grade packaging, medical components and precision electronics where product cleanliness is non-negotiable.
Advanced Safety Architecture
Dual solenoid safety valves ensure the clutch cannot engage if either valve fails. Combined with emergency stop buttons on both sides, hydraulic overload protection, top-dead-center stopping control and optional photoelectric light curtain guards — the press exceeds CE and OSHA safety standards for operator protection.
Consistent Force Delivery
Precision-ground crankshaft with helical gear transmission delivers uniform tonnage at bottom dead center on every stroke. The pneumatic clutch’s self-adjusting friction linings maintain consistent engagement pressure throughout their full service life — no gradual degradation or periodic adjustment required.
Low Noise & Vibration
The pneumatic clutch engagement is inherently smoother than rigid mechanical key clutches, producing significantly less impact shock and noise during operation. Combined with the balanced flywheel and helical gear drive, the press operates at workshop noise levels 4–8 dB lower than comparable rigid-clutch presses — improving operator comfort and extending die life.
Lower Maintenance Cost
No clutch oil to change, no oil filter to replace, no oil seals to leak. The dry pneumatic system eliminates the single largest maintenance cost of wet-clutch presses. Self-adjusting friction linings last 2–3 million cycles before replacement, and the simple air supply system requires only standard workshop compressed air at 0.5–0.6 MPa.
Not Sure Which Model Fits Your Application?
Our engineers will analyze your material type, thickness and forming requirements to recommend the optimal pneumatic press tonnage and configuration for your production line.
Technical Data
Specifications
Available from 25 to 400 tons across the JH21 series. All models feature dry pneumatic clutch & brake, hydraulic overload protection, motorized slide adjustment and CE-certified safety systems.
| Parameter | JH21-25 | JH21-45 | JH21-80 | JH21-125 | JH21-200 | JH21-315 |
|---|---|---|---|---|---|---|
| Nominal Capacity (kN) | 250 | 450 | 800 | 1250 | 2000 | 3150 |
| Nominal Stroke (mm) | 3 | 4 | 5 | 6 | 6 | 7 |
| Slide Stroke Length (mm) | 80 | 120 | 160 | 180 | 200 | 220 |
| Slide Stroke Per Minute — Fixed (times/min) | 100 | 80 | 60 | 50 | 45 | 33 |
| Slide Stroke Per Minute — Variable (times/min) | 60-120 | 50-95 | 40-75 | 35-65 | 30-55 | 25-40 |
| Max. Die Set Height (mm) | 250 | 270 | 320 | 335 | 450 | 500 |
| Die Height Adjustment (mm) | 50 | 60 | 80 | 90 | 100 | 120 |
| Throat Depth (mm) | 210 | 225 | 310 | 350 | 400 | 450 |
| Distance Between Uprights (mm) | 470 | 525 | 580 | 630 | 910 | 980 |
| Slide Bottom Size L×R (mm) | 360×250 | 400×340 | 540×460 | 620×520 | 900×650 | 700×700 |
| Mold Handle Hole Φ (mm) | 50 | 50 | 50 | 70 | 70 | 100 |
| Mold Handle Hole Depth (mm) | 50 | 60 | 70 | 80 | 100 | 100 |
| Bolster Size L×R (mm) | 720×400 | 825×440 | 1060×600 | 1100×680 | 1390×840 | 1540×880 |
| Table Hole Diameter (mm) | 150 | 150 | 180 | 200 | 240 | 240 |
| Bolster Thickness (mm) | 80 | 110 | 140 | 155 | 180 | 190 |
| Bolster Surface Height (mm) | 750 | 775 | 845 | 850 | 1000 | 1000 |
| Motor Power (kW) | 3 | 5.5 | 7.5 | 11 | 18.5 | 30 |
| Dimension F×B (mm) | 1500 | 1540 | 1765 | 2000 | 2305 | 2720 |
| Dimension L×R (mm) | 945 | 1075 | 1300 | 1320 | 1540 | 1680 |
| Dimension Height (mm) | 2090 | 2365 | 2675 | 2960 | 3800 | 3850 |
* Specifications based on standard configuration. Stroke rate is at continuous operation mode. Custom tonnage up to 400 tons and special configurations available upon request. Contact our engineering team for detailed technical drawings and foundation plans.
Core Components
Machine Structure
Precision-engineered with a forged alloy crankshaft, dry pneumatic clutch system and high-rigidity welded frame — built for decades of reliable, clean high-speed stamping production.
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1
Welded Steel C-Frame
FEA-optimized welded steel frame with internal ribbing for maximum rigidity. Three-sided access for easy die loading and changeover.
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2
Forged Crankshaft & Gear Drive
Forged alloy steel crankshaft with helical gear transmission and forced lubrication. Flywheel ensures consistent force at high SPM.
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3
Dry Pneumatic Clutch & Brake
Crankshaft-mounted dry clutch & brake with <50 ms response. Self-adjusting linings, zero oil contamination.
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4
Six-Sided Precision Slide
Bronze-lined six-sided gibs eliminate lateral play. Adjustable for zero-clearance operation and maximum precision.
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5
Hydraulic Overload Protection
Instantly releases when tonnage exceeds rated capacity, protecting crankshaft and die. Auto-reset for immediate restart.
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6
PLC Control System
PLC-based control with cam controller. Optional HMI, stroke counter, tonnage monitor and auto-feeder interface.
Core Technology
Dry Pneumatic Clutch & Brake System
Unlike wet-type clutches immersed in oil, the dry pneumatic system uses composite friction linings in a clean air environment — delivering faster engagement, shorter stopping distances and zero lubricant contamination of the workpiece or die area.
Compressed air at 0.5–0.6 MPa actuates the clutch via dual solenoid safety valves. Fail-safe design engages the brake instantly on power loss. Self-adjusting linings maintain performance over 2–3 million cycles without manual adjustment.
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<50msEngagement Time
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0oilZero Contamination
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3M+Cycles Per Lining Set
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120SPMMax Stroke Rate
Customize Your Machine
Optional Equipment
Tailor your inclinable power press with a wide range of optional accessories to maximize efficiency, safety and stamping capability for your specific application.
Drive
Slider
Precision-machined slider assembly with adjustable stroke length and shut height, guided by bronze-bushed gibs for accurate, repeatable ram travel under full tonnage.
- Adjustable shut height & stroke
- Bronze-bushed gib guides
- Rigid cast-iron construction
- Motorized slider adjustment available
Power Train
Crankshaft System
Forged alloy-steel crankshaft with heat-treated journals and precision bearings, delivering smooth rotary-to-linear motion conversion for consistent tonnage at bottom dead center.
- Forged alloy-steel construction
- Heat-treated bearing journals
- Dynamic balance for low vibration
- High fatigue-life design
Control
PLC
PLC-based control with cam controller for single-stroke or continuous mode. Optional HMI, stroke counter, tonnage monitor and auto-feeder interface for integrated production control.
- Single-stroke & continuous mode
- Cam controller synchronization
- Optional HMI & stroke counter
- Auto-feeder interface
Maintenance
Lubrication System
Centralized lubrication system delivering precise oil flow to crankshaft bearings, slide gibs and connecting points for extended component life and consistent performance.
- Centralized lubrication
- Timed automatic intervals
- Critical bearing & gib coverage
- Extended component lifespan
Operation
Independent Console
Standalone operator console with start/stop, mode selection and parameter display. Positioned for clear visibility and safe access without obstructing die area or material feed.
- Start/stop & mode selection
- Parameter display
- Ergonomic placement
- Clear die-area visibility
Safety
Foot Switch
Optional foot pedal for hands-free cycle initiation in single-stroke mode. Two-hand operation remains available for maximum safety; foot switch suits high-volume manual feeding applications.
- Hands-free cycle trigger
- Single-stroke mode use
- Two-hand option retained
- CE-compliant design
How It Works
4-Step Precision Stamping Workflow
From material feeding to finished part ejection — the pneumatic power press delivers clean, fast and repeatable stamping with air-powered precision control at every stage of the cycle.
1
Setup & Die Loading
Install the die set and use motorized slide adjustment to match die shut height. Set the PLC controller for single-stroke or continuous mode. Adjust air pressure to 0.5–0.6 MPa and verify safety systems — the press is ready in minutes.
2
Material Feed
Feed sheet metal strip or blanks into the die area manually or via automatic roller/servo feeder. The three-sided C-frame access allows loading from front, left or right. PLC synchronizes feed length with stroke cycle for consistent material positioning.
3
Press & Form
Pneumatic clutch engages in <50 ms, the crankshaft drives the slide through the full stroke delivering rated tonnage at bottom dead center. Clean engagement means no oil mist, no vibration spike and precise force application on every single stroke.
4
Eject & Repeat
Finished parts eject via knockout bar or through the bolster hole. In continuous mode, the cycle repeats at full SPM. Stroke counter and optional tonnage monitor track production metrics in real time for quality assurance.
Stamping Capabilities
Processes & Sample Parts
From precision electronics stamping to heavy-duty blanking — see the breadth of forming operations the KAVDO pneumatic power press handles with clean, consistent performance.
Tube Bending
Precision bending of tubes and pipes to required angles and radii — exhaust components, handrails, furniture frames and structural tubing with consistent bend quality and minimal deformation.
Shearing
Straight-line or guillotine shearing of sheet metal, strip and plate — clean cuts with minimal burr for blanks, panels and cut-to-length material across various thicknesses and widths.
Plate Bending
Bending of thick plate and sheet into arcs, channels and structural shapes — tanks, housings, brackets and formed sections with accurate bend angles and radius control.
Press Fitting
Press-fit assembly of pins, bushings, bearings and interference-fit components — precise force control ensures consistent joint integrity without damage to parts or over-compression.
Riveting
Riveting, staking and mechanical fastening operations — the pneumatic system delivers consistent force for reliable joint quality in assembly of brackets, panels and multi-part components.
Punching
Precision punching of holes, slots, notches and perforations in sheet metal — washers, brackets, contact terminals and stamped components with clean shear edges and high-speed capability.
Extrusion Molding
Cold extrusion and impact extrusion of metal parts — pins, sleeves, cans and hollow shapes with controlled wall thickness and dimensional consistency from the pneumatic press force.
Marking
Stamping of logos, part numbers, date codes and identification marks on nameplates, tags and components — crisp, repeatable marking with consistent depth and legibility.
Applications
Industries We Serve
From precision electronics to automotive component manufacturing — the KAVDO pneumatic power press delivers clean, high-speed stamping capability across industries where product quality, cleanliness and production efficiency are paramount.
Why KAVDO
Your Trusted Manufacturing Partner
Beyond machines — we deliver complete pneumatic press solutions including pre-sales engineering consultation, production line integration, installation commissioning, operator training and lifelong after-sales support.
Factory Direct Price
Buy directly from our own factory — no middlemen. Competitive pricing with transparent quotation and no hidden costs. Bulk order discounts and complete stamping line packages available.
Engineering Support
Dedicated project engineer analyzes your stamping requirements, recommends the optimal tonnage and configuration, provides die compatibility assessment and assists with production line layout for maximum throughput.
Global Shipping
Professional heavy equipment export packing with anti-rust treatment, fumigation certificate and transport insurance. Full container or LCL shipping to any port worldwide with door-to-door service available.
Lifetime Support
Remote video troubleshooting, spare parts supply within 48 hours, on-site installation commissioning, operator training and optional annual maintenance contract for the entire life of the machine.
Get Started
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Get professional advice and competitive pricing within 24 hours. Tell us about your requirements and our team will prepare a tailored solution for you.
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