Universal Testing Machines have a wide range of applications. A number of materials and metals in different forms and shapes can be tested for a variety of testes like tension, compression, Transverse, Bend Shear, Brinell Hardness, etc. Special attachments are also available for testing of flat belts, chain links, wire ropes etc.
1) Load Frame
The base has a hydraulic cylinder at its center, and two main screws at both ends. The middle cross head is mounted on screws though main nuts. The middle cross head can be moved up or down through chain transmission and geared motor to adjust he initial tensile / Compression clearance. On the piston rest an assembly ensures smooth transfer of force with minimum friction.
2) Hydraulic system
Hydraulic circuit consist of hydraulic power pack having a directly driven radial plunger pump which gives a continuous non pulsating flow of oil pressure upto 250 bar. Oil filter, Oil strainer, Air breather, Oil level Indicator, Drain plug a provided on the power pack. A pressure compensated needle type flow control valve, is provided to control the oil flow by cylinder thereby achieving desired piston speed. Infinitely variable speeds can be obtained with the help of valves.
3) Electrical System
A separate switch box and electrical panels are provided. Both the hydraulic pump motor and the geared motor have interlocks. Limit switches are provided to stop the hydraulic pump motor if the load increases beyond the machine capacity of if the piston stroke is exceeded.