I. Main Technical Parameters

1. Load:                    2000 kN

2. Indication Accuracy:            Grade 1

3.          Resolution:        0.1 kN

4. Distance Between Pressure Plates:  320 mm

5. Upper and Lower Pressure Plate Specifications:    220×250 mm

6. Piston Diameter*   Stroke: Diameter 250×40 mm

7. Motor Power:           0.75 kW

8. Input Voltage:              380 V

9. Overall Dimensions:       880×480×1400 mm

10. Net Weight:                 600 kg

II. Structure Overview

The testing machine mainly consists of three parts: the main body, the hydraulic control box, and the force measuring instrument.

1. Main Body Section

The main body of the testing machine is connected by four columns linking the cylinder and the upper beam.

An adjustment screw is installed on the upper beam of the testing machine. The large handwheel and nut screw can adjust the no-load height of the testing machine. The lower end of the screw is equipped with a ball seat and the upper pressure plate. The lower pressure plate is placed on the piston of the oil cylinder. When the specimen contacts the upper pressure plate, the ball seat of the upper pressure plate can self-adjust for balance, keeping the specimen level with the upper and lower pressure plates. The lower pressure plate is engraved with positioning lines for the specimen. During testing, the specimen must align with these lines. A dust cover is installed below the lower pressure plate to prevent or reduce dust from entering the oil cylinder during piston movement, which could damage the cylinder or oil seal. A sealing device is installed between the piston and the oil cylinder to prevent oil leakage. However, if a slight oil leakage occurs during use, an annular oil groove at the top of the cylinder and an oil discharge channel will drain the oil back to the main tank.

2. Hydraulic Section

     The hydraulic box of this testing machine mainly consists of an oil tank, oil pump, oil filter, motor, speed valve, and return oil valve. The oil pump is a direct-rotation axial five-pillar pump. During loading, the loading speed valve should be manually controlled to regulate the piston’s rising speed (this valve is integrated with the safety valve). During unloading, the return oil valve can be turned to allow the oil cylinder to descend slowly. The safety valve has been preset to an appropriate position before leaving the factory. Under normal use, users should not adjust the safety valve.