Endurance test bench HUD series

performancePC-controllableshock absorber

Overview
At STEP Lab the HUD series is an electrodynamic test bench designed for damper and suspension testing. It is built for high-dynamic and endurance tests and can handle high continuous and peak forces across a wide range of dampers and shock absorbers.

Key numerical features

• Max. Peak force: up to 66 kN (model-dependent)
• Max. Dynamic force: up to 24 kN (model-dependent)
• Max. Test speed: up to 8.0 m/s

Type of test

• Performance testing
• Endurance / durability testing

Applications

• Shock absorbers
• Dampers
• Vehicle suspensions — characterization and durability tests

Features

• Closed-loop control of force and displacement via Test Center controller
• Reproduction of sinusoidal, triangular and custom profiles
• High-resolution data acquisition (24 bit)
• Variable installation positions and separate, free-position controller
• Flexible programming of test sequences through Test Center graphical interface
• Wide variety of grips, testing tools and load cells
• Integration with extensometers and climatic chambers
• Capability to synchronize up to 10 actuators for multi-actuator systems

Advantages

• High dynamic performance thanks to electrodynamic linear motor actuation
• Minimal maintenance due to absence of mechanical transmission
• Low power consumption and high efficiency (electric motor)
• Configurable as single linear actuator or multi-column machine
• Programmable speed range from 0.01 mm/s up to 8,000 mm/s and strokes >200 mm
• Easy installation: single electrical socket and compressed air required

Technical data (Metric)
HUD SERIES | UNITS | HUD010 / HUD010L | HUD020 / HUD020L | HUD030 / HUD030L | HUD060 / HUD060L
Max. Peak Force | kN | 11.00 | 22.00 | 33.00 | 66.00
Max. Dynamic Force | kN | 4.00 | 8.00 | 12.00 | 24.00
Max. Static Force | kN | 3.00 | 6.00 | 9.00 | 18.00
Max. Test Speed | m/s | 4.0 / 6.0 | 4.0 / 6.5 | 4.0 / 6.5 | 4.0 / 6.5
Max. Speed at Peak force | m/s | 1.6 / 4.0 | 1.6 / 4.0 | 1.6 / 4.0 | 1.6 / 4.0
Max. Test Frequency * | Hz | 125 | 125 | 125 | 125
Standard Stroke | mm | 200 | 200 | 200 | 200
Working Temperature | °C | 5-30 | 5-30 | 5-30 | 5-30
Cooling | - | Air | Air | Air | Water closed circuit
Facility Requirement | - | 3PH 400Vac | 3PH 400Vac | 3PH 400Vac | 3PH 400Vac

* Max. Frequency of 250 Hz available on request. Maximum performance achieved at 480 Vac. Stroke options (higher strokes available for some versions).

Product range & positioning
The HUD series is part of STEP Lab’s family of damper and shock absorber test machines, covering performance, characterization and durability systems. Portfolio peak loads reach up to 120 kN and continuous dynamic loads up to 75 kN across available product lines.

Characteristics / technical specifications

• Series name: HUD series
• Actuation: electrodynamic linear motor actuators
• Control: closed-loop force and displacement control via Test Center
• Data acquisition: 24-bit high-resolution
• Programmability: graphical interface for custom sequences; supports sinusoidal, triangular and custom profiles
• Multi-actuator capability: up to 10 actuators synchronized
• Standard stroke: 200 mm (other strokes available for HUD020 / HUD030 / HUD060)
• Test speed: up to 8.0 m/s (model-dependent)
• Peak loads: up to 66 kN (HUD060 example)
• Max. test frequency: 125 Hz (250 Hz available on request)
• Working temperature: 5 °C to 30 °C
• Cooling: air (most models); closed-circuit water for higher-load model
• Electrical supply: 3-phase 400 Vac (maximum performance at 480 Vac)
• Integration: supports extensometers and climatic chambers; wide variety of grips and load cells