DW 750 - Drop Weight Tower Impact Tester
High reliability – High efficiency – Modular structure for a wide range of applications
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📘 General Description
The DW750 system operates by free fall with pneumatic release.
The DW750 Free Fall Drop Weight Impact Tester is designed to perform impact testing on plastics, composites, films, and industrial components.
It operates under the free-fall weight principle and complies with international standards ASTM D3763, ASTM D4272, ASTM D5628, ISO 6603-2, and ISO 7765-2.
Its robust structure, measurement accuracy, and digital control ensure repeatable results in impact tests at different energy levels and drop heights.
This model incorporates the ImpactStar software, which allows equipment control, data acquisition, and automatic report generation.
🧩 General Features
STEP Lab impact testing systems (integrated into the DW series) are designed to perform single-axis or multi-axis impact tests on products and standardized specimens.
These systems offer a wide energy capacity ranging from 0.2 to 2000 J, allowing the testing of a wide variety of materials and components.
Their modular design and large internal working area enable the placement of specimens of different sizes.
The equipment can be complemented with a wide range of optional accessories, including:
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- Instrumented load cells
- Anti-rebound systems
- Spring accelerators
- Interchangeable impactors and specimen holders
⚙️ Main Technical Specifications
| Parameter | Value |
| Drop height | 0.04 – 1.4 m |
| Impact velocity (without acceleration) | 5,0 m/s |
| Impact velocity with acceleration | 20.0 m/s (with optional acceleration) |
| Velocity measurement | High-precision optical sensor |
| Energy range | Up to 750 J |
| Standard drop weight | 55 kg |
| Drop weight with acceleration | 12.5 kg (at 10 m/s) |
| Signal acquisition speed | 14 MHz |
| Signal resolution | 16 bits |
| Foot loading point | 12.000 N/cm² |
| Compressed air pressure | 6 – 8 bar |
| Test area (W × D × H) | 400 × 400 mm |
| Overall dimensions (W × D × H) | 780 × 600 × 2500 mm |
💻 Control System and Software
The ImpactStar software provides complete test control and data management:
- Fully digital and automated controI
- Individual or batch test acquisition
- Load-time curve analysis
- Easy parameter adjustment
- Multi-level safety management
- Automatic report generation
- Integrated database and result export
🧰 Standard Accessories
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- Interchangeable hammers and anvils according to standards
- Infrared / optical speed detector
- ImpactStar software with graphical user interface
- Protective safety cage system
- Supports for different specimen types
⚗️ Applications
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- Single-axis or multi-axis impact testing on plastic, composite, or metallic materials
- Evaluation of absorbed energy and impact behavior
- Quality control, certification, and product development
- Research on fracture resistance and crack propagation under dynamic conditions


