Friction testing machine GM-4

computer-controlledmotorizedfor films and thin products

COF Test Machine

Product Overview
The GBPI GM-4 Coefficient of Friction Tester measures static and dynamic friction coefficients of materials such as plastic films, composite films, aluminum foils, aluminized films, plates, rubber and ceramics during sliding. It provides accurate evaluation of slipperiness, ease of opening and surface uniformity to support production control and R&D decisions.

Compliance Standards
ASTM D1894

Brand / Basic Information

• Brand: GBPI
• Item NO.: GM-4
• Product Origin: Guangzhou China
• Shipping Port: Huangpu Guangzhou

Technical Parameters

• Friction Coefficient Testing Range: 0.001–0.999
• Force Measurement Range: 0–10 N
• Measurement Accuracy: ±0.5% FS
• Slider Size: 63.5 mm × 63.5 mm
• Slider Mass: 200 ± 2 g
• Sliding Plane: Stainless steel plate 300 × 150 × 1 mm
• Workbench Size: 200 mm × 470 mm
• Stroke: 0–150 mm
• Slider Movement Speed: 0–500 mm/min (stepless)
• Temperature Control (optional): Room temperature up to 100°C
• Sample Thickness Capability: ≤ 2 mm
• Power Supply: AC 220 V, 50 Hz
• Overall Dimensions: 470 × 300 × 300 mm
• Weight: 13.6 kg

Product Features

• Easy force sensor calibration with a dedicated standard block for fast, reliable setup.
• Integrated LCD shows test speed and real-time static and dynamic friction coefficients.
• Optional heating module with adjustable temperature up to 100°C for temperature-dependent tests.
• Control software with an intuitive interface; real-time curve display with zooming.
• Sensor over-range protection and modular design for simplified maintenance.
• Standard rigid sleeve and switchable springs reduce stick‑slip on adhesive films.

Applications

• Quality control and R&D for flexible packaging, laminates, adhesive films and converting processes.
• Evaluation of slip, seal opening, transport behavior and surface treatments.

Ordering & Options

• Standard delivery: GM-4 tester, rigid sleeve, standard slider and control software.
• Optional accessories: heating module (up to 100°C), calibration block, extra sliders and customer-specific configurations.
• Power: AC 220 V, 50 Hz. For other voltages or custom requirements, contact GBPI sales.