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Hydraulic units and components

LABORTECH hydraulic units and servo cylinders are designed to meet the most demanding requirements of servo-hydraulic test machines and systems. Our hydraulic units are divided into several categories, namely:

HAS – Hydraulic units designed for static tests operating at a constant pressure of 350 bar,

HAS-G – Hydraulic units designed for static testing and operating at a constant pressure of 350 bar and pressure for hydraulic grips of 160, 350 or 480 bar.

HAG-H – hybrid hydraulic units for hydraulic grips 160, 350 or 480 bar.

HAD – Hydraulic units designed for dynamic tests operating at a constant pressure of 210 or 280 bar

All our modifications to the hydraulic units are designed to meet the most demanding conditions for

ecology, noise and serviceability

HAS – HYDRAULIC UNITS DESIGNED FOR STATIC TESTS

Hydraulic units designed for static tests operating at a constant pressure of 350 bar and a flow rate of 4, 8, 20 and 40 l / min. The asynchronous motor drives a self-priming pump with constant pressure. Hydraulic fluid passes through a safety pressure valve and through the output through a pressure filter with an electrical indication of clogging into a hydraulic cylinder fitted with a pressure and flow distributor and a MOOG servo valve. As a cooling unit in the waste circuit or a separate circuit (depending on the type of HA), a controlled-speed air fan is used.

Main advantages and features:

- Controlled hydraulic pump with constant pressure and controlled proportional valve flow.
- Accurate and constant pressure without pulsation
- The HU-based noise barrier provides a noise level of less than 62 dB.
- Anti-vibration legs absorb more than 40% of HU vibrations.
- Integrated oil drip bath with oil level sensor
- HALT monitoring and control unit with LCD display and SIMATIC PLC with oil pressure monitoring in all circuits.
- Control of HU from a switchgear or RMCi controller.
- The connection between the HU and the hydraulic cylinder is ensured by hydraulic hoses – up to 5 m.

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HAS-G – HYDRAULIC UNITS DESIGNED FOR STATIC TESTS AND HYDRAULIC GRIPS

Hydraulic aggregates designed for static tests operating at a constant pressure of 350 bar and flow rates of 4, 8, 20 and 40 l / min for hydraulic grips of 160, 350 or 480 bar. The asynchronous motor drives a self-priming pump with constant pressure. Hydraulic fluid passes through a safety pressure valve and through the output through a pressure filter with an electrical indication of clogging into a hydraulic cylinder fitted with a pressure and flow distributor and a MOOG servo valve. Hydraulic grips circuit consists of a separate pump, an asynchronous motor, and the relevant hydraulic components to ensure proper pressure control into to the grips. The pressure in the grips is controlled manually or automatically (as an option) from the front of the HU and is converted and indicated on the LCD display of the HALT 16 unit in kN. As a cooling unit in a waste circuit or a separate circuit (depending on the type of HU), a controlled-speed air fan is used.

Main advantages and features:

- Controlled hydraulic pump with constant pressure and controlled proportional valve flow.
- Integrated separate hybrid hydraulic circuit for control and adjustment of hydraulic grips.
- On-line control and display of compressive force in individual grips on the LCD display in kN.
- The HU-based noise barrier provides a noise level of less than 62 dB.
- Anti-vibration legs absorb more than 40% of HU vibrations.
- Integrated oil drip bath with oil level sensor
- HALT monitoring and control unit with LCD display and SIMATIC PLC with oil pressure monitoring in all circuits.
- Control of HU from a switchgear or RMCi controller.
- The connection between the HU and the hydraulic cylinder is ensured by hydraulic hoses – up to 5 m.

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HAG – HYBRID HYDRAULIC UNITS DESIGNED FOR HYDRAULIC GRIPS

Hybrid hydraulic units designed for hydraulic grips 160, 350 or 480 bar. The entire system operates in a hybrid controlled mode with precise pressure and flow control, resulting in energy savings of up to 45% and very quiet and refined performance. Hydraulic grips circuit consists of a self-priming pump, a controlled asynchronous motor and the appropriate hydraulic components to ensure proper control of pressure in the grips. The pressure in the grips is controlled manually or automatically (as an option) from the front HU and is converted and indicated on the LCD display of the HALT 16 unit in kN.

Main advantages and features:

- Controlled closing and opening of hydraulic grips with hybrid controlled system from HALT 16.
- On-line control and display of compressive force in individual grips on the LCD display in kN.
- Integrated synchronous steering system for closing and opening of hydraulic grips.
- The HU-based noise barrier provides a noise level of less than 62 dB.
- Anti-vibration legs absorb more than 40% of HU vibrations.
- Integrated oil drip bath with oil level sensor
- HALT monitoring and control unit with LCD display and SIMATIC PLC with oil pressure monitoring in all circuits.
- HU and hydraulic grips control from the RMCi controller.
- The connection between HU and hydraulic grips is ensured by hydraulic hoses – up to 5 m.

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HAD – HYDRAULIC UNITS DESIGNED FOR DYNAMIC TESTS

Hydraulic units designed for dynamic tests operating at a constant pressure of 210 or 280 bar and flow rates from 8 to 160 l / min. The asynchronous motor drives a self-priming pump with constant pressure. Hydraulic fluid passes through a safety pressure valve and output through an output pressure filter with an electrical indication of clogging to the hydraulic servo cylinder with the integrated servo valve MOOG. Hydraulic units HAD are designed modularly and can be extended with the following: crossbar stroke, crossbar clamping, hydraulic grips circuits, battery circuits, etc. The LCD display with HALT 16 provides control and diagnostics of all HU circuits, Temperature monitoring, oil levels, pressures, service intervals, etc. A fan with controlled speed or water cooling via the exchanger is used to cool the hydraulic fluid.

Main advantages and features:

- Controlled hydraulic pump with constant pressure and controlled flow.
- Preparation for an integrated standalone hybrid hydraulic circuit for controlling and adjusting the hydraulic grips, stroke and clamping of the crossbar
- Accurate and constant pressure without pulsation in all circuits.
- Preparation for the HU noise barrier to provide a noise level of less than 65 dB.
- Anti-vibration legs absorb more than 40% of HA vibrations.
- Integrated oil drip bath with oil level sensor
- HALT monitoring and control unit with LCD display and SIMATIC PLC with oil pressure monitoring in all circuits.
- Control of HU from a switchgear or RMCi controller.
- The connection between the HU and the hydraulic cylinder is ensured by hydraulic hoses – up to 5 m.

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HYDRAULIC CYLINDERS

Servo-hydraulic test cylinders are divided into cylinders for static and dynamic tests where we work at pressures of 210, 280 and 350 bar. We use proportional or servo valves from MOOG for control of pressure and oil flow in combination with integrated SSI or LVDT length sensors for all hydraulic cylinders we supply. Thanks to these elements, in conjunction with the EDCi measuring and control unit, we are able to implement load curves in mechanical testing of materials very accurately.

Main advantages and features:

- Strong precision connecting flange with a stem
- Precise and maintenance-free operation guaranteed by the special construction of the cylinder with minimal friction.
- Integrated proportional or servo-valve from MOOG.
- An integrated SSI or LVDT length sensor.
- Accurate and constant pressure without pulsation in all P and T circuits with help of accumulators.
- The connection between the hydraulic aggregate and the hydraulic cylinder is ensured by hydraulic hoses – up to 5 m. A pipe is used over lengths 5 m.

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Hydraulic units and components

HAS – HYDRAULIC UNITS DESIGNED FOR STATIC TESTS

HAS-G – HYDRAULIC UNITS DESIGNED FOR STATIC TESTS AND HYDRAULIC GRIPS

HAG – HYBRID HYDRAULIC UNITS DESIGNED FOR HYDRAULIC GRIPS

HAD – HYDRAULIC UNITS DESIGNED FOR DYNAMIC TESTS

HYDRAULIC CYLINDERS

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