The Semi-Automatic (Motorized) Power Pack, controlled by a pressure rate control valve is designed to supply the required oil to the load frames for loading. The power pack can load different  frames with required pace rates. A pump is supplied as standard. The power pack is equipped with a safety valve (maximum pressure valve) to avoid machine overloading. Maximum working pressure of the system is 400 bar.

Single Stage Pump

The single stage pump is formed by; 

High pressure pump 

On the single stage pump, high pressure pump is used for test execution.


The motor which drives the pump in an AC motor.

Distribution Block

A distribution block is used to control the oil flow direction supplied by the pump. Loading and unloading process and pace rate adjustment is done from the arms on the distribution block. The following parts are fitted to the distribution block; Safety valve (max. pressure valve) and Transducer.

High Precision Pressure Transducer

TheNatek range of Semi-Automatic Machines can be upgraded with option High Precision Pressure Transducer special calibration Class 1 starting from 1% of the full range.
This unique performance enables the machines to be used for a considerable number of applications including:
Early age (2 or 3 days) compression strength tests
Flexural and splitting tests by using proper accessories
Mortar (Cement) compression tests by using proper accessories
Core Testing

Oil Tank

The tank includes enough oil to fill the mechanism which pushes the ram during the test. The level and oil temperature can be seen on the indicator fitted to the tank. It has 15 L capacity. Hydraulic motor oil, number 46, must be used.

Digital Readout Unit

The Digital Readout Unit has been designed to use with load cells or pressure transducers on different material test applications.
The peak value and the load change during the test are displayed on the screen.
Peak value hold property
Easy preload zeroing
5 Digits
Multi-point Calibration

Safety Features

Maximum pressure valves to avoid machine overloading
Piston travel limit switch
Emergency stop button