We are Manufacturer, Supplier, Exporter of all our product range and our setup is situated in Kolhapur ( Maharashtra, India )

Features

  • Hydraulic front loading wedge action grips
  • Loading Accuracy as high + 1%
  • Straining at variable speeds to suit a wide range of materials.
  • Printer & PC Graphs enables to study the behavior of the material
  • Continuous roll autographic recorder supplied as standard to enable study of the behavior of materials
  • Motor driven threaded columns for quick effortless adjustment of lower cross-head-to facilitate rapid fixing of test specimen.
  • High reading accuracy due to large size and design of dial.
  • Wide range of standard and special accessories, including load stabilizer.
  • Easy loading of specimens.
  • Large effective clearance between columns enables testing of standards specimens as well as structures.
  • Simple controls for ease of operation.
  • Robust staining frame of an extremely rigid construction.
  • Safe operation ensured be means of safety devices.
  • Fully enclosed and protected pressure transducer
  • RS 232 serial port to transfer data to computer for analysis/storage, evaluation etc.
  • Manual control & release valve operation

Application

ARUN Universal Testing Machine is designed for testing metals and other materials under tension, compression bending, transverse and shear loads. Hardness test on metals can also be conducted.

Principal of Operation

Operation of the machines is by hydraulic transmission of load from the test specimen to a separately housed load indicator. The hydraulic system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces.

The Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the cylinder of the pendulum dynamometer system housed in the control panel. The tansducer gives the signal to the electronic display unit, corresponding to the load exerted by the main ram.simultaneously the digital electronic fitted on the straining unit gives the mechanical displacement to the electronic display unit. Both the signals are processed by the microprocessor and load & displacement is displayed.

Machine consists of

Straining Unit
An elongation scale with a minimum graduation of 1 mm, is provided to measure the deformation of the specimen.

Tension test is conducted by gripping the test specimen between the upper and lower cross-heads, Compression, transverse, bending, shear and hardness tests are conducted between the lower cross head and the table.

The lower cross-head can be raised or lowered rapidly by operating the screwed columns thus facilitating ease of fixing of the test specimen.

Control Panel

The control Panel consists of a power pack complete with drive motor and an oil tank, control valves a pendulum dynamometer a load indicator system and an autographic recorder.


Power Pack

The power pack generates the maximum pressure of 200 kgf/cm2 the hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth.

Hydraulic Controls

Hand operates wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable incorporated in the hydraulic system is a regulating valve which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.

Load Indicator System

This system consists of a large dial and a pointer. A dummy pointer is provided to register the maximum load reached during the test. Different measuring ranges can be selected by operating the range selection knob. An overload trip switch is incorporated which automatically cuts out the pump motor when the load range in use is exceeded.

Pendulum Dynamometer

This unit permits selection of favorable hydraulic ratios producing relatively small frictional forces. Pressurised oil in the loading cylinder pushes up the measuring piston proportionately and actuates the special dynamometer system. The piston is constantly rotated to eliminate friction. The dynamometer

system is also provided with an integral damper and ensures high reliability of operation. The load transmitted to the dynamometer is transferred through a pendulum to the load indicator.

Autographic Continuous Roll Load-Elongation Recorder

This unit is of the pen and drums type and is supplied as standard. The horizontal motion of the pen produces the load ordinate of the diagram and the drum rotation produces the extension ordinates in the ration of either 1:5 or 1:10.

Accuracy & Calibration

All ARUN Universal Testing Machines are closely controlled for sensitivity, accuracy and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in BS : 1610 : Part 1 :1992 and IS 1828 : (Part 1) : 1991.

ARUN Universal Testing Machines comply with Grade "A" of BS : 1610 : Part 1:1992 and class 1 of IS 1828 : (Part1) : 1991 An accuracy of + 1.0% is guaranteed from 20% from 20% of the load range selected to full load. Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading.


Specification


Model Unit UTN-10 UTN-20 UTN-40 UTN-60 UTN-100
 Maximum capacity  kN  100  200  400  600  1000
 1st Measuring Range  kN  0-100  0-200  0-400  0-600  0-1000
 Minimum Graduations  kN  0.2  0.4  1  1  2
 2nd Measuring Range  kN  0.50  0-100  0-200  0-300  0-500
 Minimum Graduations  kN  0.1  0.2  0.5  0.5  1
 3rd Measuring Range  kN  0.25  0-50  0-100   0-120   0-250 
 Minimum Graduations  kN  0.05  0.1  0.25  0.2  0.5
 4th Measuring Range  kN  0.10  0-20  0-40  0-60  0-100
 Minimum Graduations  kN  0.02  0.04  0.1  0.1  0.2
 Clearance for tensile at fully descended working piston   mm  50-700  50-700  50-700  50-800  50-850
 Clearance for compression test at fully descended working piston  mm  0-700  0-700  0-700  0-800  0-850
 Clearance between columns  mm  500  500  500  600  750
 Ram stroke  mm  150  200  200  250  250
 Straining/piston speeds (at no load)   mm/min  0-300  0-150  0-150  0-100  0-80
 Connected Load -  - - - - -
 HP -  1.3  1.3  2.3  2.5  3.5
 V -  400-440  400-440  400-440  400-440  400-440
 ø -  3  3  3  3  3
 Dimensions -  - - - - -
 L X W X H (approx.)  mm  2032 x 750 x 1960 x  2032 x 750 x 1960 x  2060 x 750 x 2180 x  2065 x 750 x 2534 x  2415 x 815 x 2900 x
 Weight approx.  kg  1500  1500  2500  3500  5500
 Standard Accessories -  - - - - -
 For Tension Test -  - - - - -
 Clamping jaws for flat specimens diameter   mm  10-20

20-30
 10-20

20-30
 10-25

25-40
 10-25
25-40
40-55
 10-25
25-45
45-70
 Clamping jaws for flat specimens 
thickness width
 mm  0-10
10-20

50
 0-10
10-20

50
 0-15
15-30

65
 0-15
15-30

70
 0-22
22-44
44-65
70
 For Compression Test  mm  -  - - - -
 Pair of compression plates of diameter  mm  120  120  120  120  160
 For Transverse Test  mm  - - - - -
 Table with adjustable rollers width of rollers  mm  160  160  160  160  160
 Diameter of rollers  mm  30  30  30  50  50
 Maximum clearance between supports  mm  500  500  500  600  800
Radius of punch tops
mm 6, 12 6, 12 12, 16 16, 22 16, 22

Special Accessories

These include load stabilizer, Brinell test Attachment, Bend Test Attachment, Shear Test Attachment and a wide range accessories offered on request at additional cost.

Installation

It is recommended that machines be erected on a foundation. Details on foundation can be given on request


Specifications


Description Unit AI-UTEFL-10 AI-UTEFL-20 AI-UTEFL-40 AI-UTEFL-60 AI-UTEFL-100
Maximum Capacity kN 100 200 400 600 1000
Measuring Range kN 0-100 0-200 0-400 0-600 0-1000
Load Resolution (20,000 counts full scale) N 5 10 20 30 50
Load Range with accuracy of kN 2 to 100 4 to 200 8 to 400 12 to 600 20-1000
Measurement ± 1 %            
Resolution of Piston movement (Displacement) mm 0.1 0.1 0.1 0.1 0.1
Clearance for tensile test (At fully descended working piston) mm 50 - 700 50 - 700 50 - 700 50 - 800 50-850
Clearance for Compression test
(At fully descended working piston)
mm 0-700 0-700 0-700 0-800 0-850
Clearance between columns mm 500 500 500 600 750
Ram Stroke mm 150 200 200 250 250
Straining Piston speed (at no load) mm/min 0-300 0-150 0-150 0-100 0-80
Connected Load   2 HP, 400-440V, 3Ph. 2 HP, 400-440V, 3Ph. 3 HP, 400-440V, 3Ph. 3 HP, 400-440V, 3Ph. 5 HP, 400-440V, 3Ph.
Standard Accessories: 
For Tension test 
Clamping jaws for round specimen of diameter
mm 10 - 20
20 - 30
10 - 20 
20 - 30
10 - 20 
20 - 30
30 -40
10 - 20 
20 - 30 
30 - 40
40-50
10-20 
20-30 
20-30 
30-40 
40-50 
50-60
Clamping Jaws for flat specimen of thickness mm 0-10 
10 - 20
0-10
10 - 20
0-10 
10-20 
20-30
0-10 
10-20 
20-30
0-10 
10-20 
20-30 
30-40 
40-50 
50-60
For compression test  Pair of compression plate of diameter mm 120 120 120 120 160
For Transverse Test 
Table with adjustable rollers 
Width of rollers 
Diameter of rollers 
Maximum Clearance between Supports 
Radius of Punch Tops
mm 
mm 
mm 
mm
160
30
500
6, 12
160
30
500
6, 12
160
30
500
16, 12
160
50
600
16, 12
160
50
600
16, 12