Power Press Series
Adjustable Stroke Power Press
High-performance C-frame mechanical power press with continuously adjustable stroke length, engineered for maximum versatility across punching, blanking, bending and shallow drawing operations. Available from 16 to 200 tons (JE23 & JE21 Series) with stroke adjustment from 10 mm to full stroke — one press handles multiple die heights and forming depths without retooling.
- Tonnage Range 16 – 200 Tons
- Continuously Adjustable Stroke
- Stroke Rate up to 140 SPM
- Pneumatic Clutch & Brake
Versatile Stroke
15+
Years Experience
80+
Countries Served
5000+
Presses Delivered
CE&ISO
Certified Quality
Product Overview
Adjustable Stroke. One Press for Every Job.
The KAVDO Adjustable Stroke Power Press (JE23 & JE21 Series) features a worm-gear stroke adjustment mechanism that allows continuous stroke length tuning from minimum to maximum without stopping the press. This eliminates the need for multiple fixed-stroke presses and dramatically reduces setup time when switching between different die sets and forming operations.
Built on a stress-relieved welded steel C-frame with six-sided rectangular slide guides, the press delivers consistent accuracy and rigidity at any stroke setting — from shallow punching to deep drawing in a single machine.
- Continuously adjustable stroke from 10 mm to full stroke
- Worm-gear adjustment mechanism with locking indicator
- Pneumatic clutch & brake with hydraulic overload protection
- FEA-optimized welded steel frame with ribbed reinforcement
- Motorized slide adjustment for quick die height changes
Performance Highlights
Key Advantages
The KAVDO adjustable stroke power press combines the versatility of variable stroke with the precision and reliability of a fixed-stroke mechanical press — in one cost-effective machine.
Continuously Variable Stroke
The worm-gear stroke adjustment mechanism allows infinite stroke length settings from minimum to maximum. Operators can fine-tune the stroke to match exact die requirements — short strokes for punching thin materials, long strokes for deep drawing — all without changing mechanical components or stopping production.
Higher Productivity at Short Strokes
When the stroke is reduced, the press runs at a proportionally higher SPM rate — up to 140 strokes per minute on the JE23-16T model. For thin-material punching and blanking operations that only need 20–30 mm of stroke, this translates to significantly higher output compared to fixed-stroke presses running at full stroke length.
Maximum Die Flexibility
One adjustable stroke press replaces 2–3 fixed-stroke machines. Whether you run progressive dies, compound dies, bending dies or drawing dies — the stroke adjusts to each one. Combined with motorized slide adjustment for die height, changeover between completely different jobs takes minutes, not hours.
Comprehensive Safety System
Dual solenoid safety valves, emergency stop buttons on both sides, top-dead-center stopping, hydraulic overload protection and optional photoelectric light curtain guards. Stroke position indicator and lock mechanism ensure the press cannot operate at an unintended stroke setting.
Reduced Noise & Vibration
Running at a shorter stroke reduces ram travel, impact velocity and noise. For light punching operations, reducing the stroke to the minimum needed lowers workshop noise by up to 6 dB and significantly reduces vibration transferred to the foundation — improving operator comfort and extending die life.
Lower Total Cost of Ownership
One adjustable stroke press eliminates the capital cost, floor space and maintenance of multiple fixed-stroke machines. The shorter stroke option also reduces energy consumption per stroke, bearing wear and clutch/brake wear — lowering operating costs by 20–35% over the machine’s lifetime compared to running full stroke continuously.
Not Sure Which Stroke Range You Need?
Our engineers will analyze your die set requirements and recommend the optimal press tonnage and stroke range for your production mix.
Technical Data
Specifications
Available from 16 to 200 tons across the JE23 and JE21 series. All models feature continuously adjustable stroke, pneumatic clutch & brake, hydraulic overload protection and CE-certified safety systems.
| Parameter | JE23-16T | JE23-25T | JE23-40T | JE23-80T | JE21-125T | JE21-200T |
|---|---|---|---|---|---|---|
| Nominal Force (kN) | 160 | 250 | 400 | 800 | 1250 | 2000 |
| Slide Stroke (mm) | 10-60 | 10-70 | 20-100 | 20-120 | 10-130 | 20-140 |
| Stroke Rate (Times/min) | 140 | 70 | 50 | 45 | 40 | 35 |
| Closed Height (mm) | 190 | 270 | 320 | 380 | 400 | 490 |
| Max. Die Set Height (mm) | 180 | 260 | 300 | 360 | 390 | 470 |
| Die Height Adjustment (mm) | 40 | 40 | 60 | 60 | 80 | 100 |
| Throat Depth (mm) | 160 | 180 | 230 | 255 | 330 | 350 |
| Table Size F×B (mm) | 290×450 | 320×520 | 420×640 | 480×750 | 600×950 | 700×1100 |
| Mold Handle Hole Φ (mm) | 35 | 40 | 50 | 60 | 60 | 70 |
| Mold Handle Hole Depth (mm) | 60 | 60 | 70 | 80 | 70 | 80 |
| Slide Bottom Size F×B (mm) | 140×170 | 165×195 | 220×260 | 255×320 | 360×420 | 340×530 |
| Column Distance (mm) | 200 | 240 | 310 | 350 | 400 | 410 |
| Thickness of Table (mm) | 40 | 45 | 80 | 80 | 100 | 110 |
| Motor Power (kW) | 1.5 | 2.2 | 3 | 4 | 11 | 18.5 |
| Dimension L (mm) | 1000 | 1050 | 1500 | 1790 | 2175 | 2175 |
| Dimension W (mm) | 820 | 950 | 1050 | 1300 | 1500 | 1740 |
| Dimension H (mm) | 1750 | 2000 | 2450 | 2650 | 2950 | 3150 |
* Specifications based on standard configuration. Stroke rate is at maximum stroke in continuous operation mode. SPM increases proportionally when stroke is reduced. Custom tonnages, stroke ranges and special bolster sizes available upon request.
Core Components
Machine Structure
Precision-engineered with a variable-eccentric crankshaft drive, worm-gear stroke adjustment and advanced pneumatic clutch system — built for decades of versatile, reliable stamping production.
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1
Welded Steel C-Frame
Stress-relieved welded steel plate frame with FEA-optimized internal ribbing. The C-frame design provides three-sided access to the die area for easy workpiece loading, while maintaining rigidity under full tonnage at all stroke settings.
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2
Variable-Eccentric Drive
The adjustable stroke mechanism uses a precision worm-gear and eccentric sleeve system on the crankshaft. Turning the adjustment wheel changes the eccentricity — and therefore the stroke length — continuously and infinitely between minimum and maximum values.
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3
Pneumatic Clutch & Brake
Dry-type pneumatic friction clutch and brake with <50 ms engagement. Supports single-stroke, continuous and inching modes. Clutch linings are self-adjusting for consistent performance over their full service life.
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4
Six-Sided Slide Guides
Precision-fitted rectangular slide with six-sided gibbed guides eliminates lateral play and ensures parallelism between the slide bottom and bolster surface at every stroke length setting. Bronze-lined gibs are adjustable for zero-clearance operation.
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5
Hydraulic Overload Protection
Built-in hydraulic overload device releases instantly when tonnage exceeds the rated capacity, protecting the crankshaft, connecting rod, slide and die from damage. Auto-reset after overload release — no manual intervention needed.
Core Technology
Variable Stroke Adjustment System
The heart of the KAVDO Adjustable Stroke Power Press is its worm-gear eccentric sleeve mechanism. Unlike fixed-stroke presses where the crankshaft eccentricity is permanently set during manufacturing, this system uses a precision worm gear to rotate an eccentric sleeve around the crankpin — continuously changing the effective throw (stroke) from minimum to maximum.
The stroke adjustment is performed via a handwheel with a graduated scale and mechanical locking indicator. Once the desired stroke is set and locked, the press operates with the same rigidity, precision and repeatability as a fixed-stroke machine. No hydraulic or electronic systems are involved — the mechanism is purely mechanical for maximum reliability.
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10mmMinimum Stroke
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140mmMax Stroke (200T)
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140SPMMax Stroke Rate
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35%Energy Savings at Min Stroke
How It Works
4-Step Versatile Stamping Workflow
From quick-change die setups to optimized production runs — the adjustable stroke power press adapts to every job with minimal downtime and maximum efficiency.
1
Set Stroke & Die Height
Adjust the stroke length to match the die’s forming depth using the handwheel and graduated scale. Set the motorized slide adjustment to match the die’s shut height. Lock both settings — the press is now configured for the job in under 2 minutes.
2
Load & Position
Feed sheet metal strip or blanks into the die area. The three-sided C-frame access allows loading from front, left or right. Use manual feeding, roller feeds or servo feeds depending on production volume and material type.
3
Press & Form
Engage the press in single-stroke or continuous mode. The pneumatic clutch engages and the variable-eccentric crankshaft drives the slide through precisely the stroke length needed — no wasted travel, no unnecessary energy consumption, no excess noise.
4
Eject & Repeat
Parts eject through the bolster hole or are removed from the die. In continuous mode with automatic feeding, the press runs at optimized SPM for the set stroke length. Switch to a different job by simply adjusting the stroke and die height — no mechanical changeover required.
Customize Your Machine
Optional Equipment
Tailor your adjustable stroke power press with a wide range of optional accessories to maximize efficiency, safety and stamping capability for your specific application.
Platform
Worktable
Heavy-duty bolster plate and T-slot worktable providing a rigid, precision-ground mounting surface for secure die installation and accurate part positioning.
- Precision-ground flat surface
- T-slot pattern for flexible die clamping
- Through-holes for part ejection
- Hardened & wear-resistant finish
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
Safety
Braking System
Combined clutch-brake unit with pneumatic engagement for rapid stopping within milliseconds, ensuring safe operation during single-stroke, continuous and inch modes.
- Pneumatic clutch-brake unit
- Fast response within 50 ms
- Long service-life friction discs
- 90° stopping angle guaranteed
Maintenance
Lubrication System
Automatic centralized lubrication system that delivers timed oil supply to all critical moving parts — crankshaft bearings, gib guides and connecting rod joints — reducing wear and extending machine life.
- Automatic timed oil delivery
- Centralized distribution manifold
- Low-oil-level alarm protection
- Reduces manual maintenance
Safety
Emergency Stop Switch
Strategically positioned mushroom-head emergency stop buttons that instantly cut power and engage the brake, bringing the slide to a complete stop for operator protection.
- Mushroom-head push-button design
- Multiple positions around the press
- Instant power cutoff & brake engage
- CE / ISO 13849 compliant
Applications
Industries We Serve
From electronics assembly to automotive component manufacturing — the KAVDO adjustable stroke power press delivers versatile stamping capability across every metalworking sector where production flexibility is a competitive advantage.
Why KAVDO
Your Trusted Manufacturing Partner
Beyond machines — we deliver complete stamping solutions including pre-sales engineering consultation, stroke optimization, 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 die inventory, recommends the optimal tonnage and stroke range, and provides die compatibility assessment and production line layout guidance for maximum versatility.
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
Start Your Project with KAVDO Today
Get professional advice and competitive pricing within 24 hours. Tell us about your requirements and our team will prepare a tailored solution for you.
- Response within 24 hours
- Free technical consultation & quotation
- Serving 80+ countries worldwide
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