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Mechanical Engineering - Theory Of Machines Lab

We are a leading Manufacturer of tm 140 free and forced torsional vibrations, tm 180 forces reciprocating engines, tm 620 bending elasticity rotors, tm 170 balancing apparatus, tm 625 elastic shafts and tm 150 vibration trainer from Ambala, India.

TM 140 Free and Forced Torsional Vibrations

TM 140 Free and Forced Torsional Vibrations
  • TM 140 Free and Forced Torsional Vibrations
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Product Details:

MaterialStainless Steel
BrandGunt
Voltage230 V
Weight50 kg
Dimensions1400x410x400 mm (LxWxH)
Torsion bar1300 mm

Torsional vibrations are often observed in belt-driven systems. With appropriate excitation of resonances, large vibration amplitudes can occur, which can lead to strong loads on shafts and gears, potentially resulting in damage. The TM 140 unit can be used to produce free and forced torsional vibrations and to study the effects of torsional stiffness, mass and damping on frequency and amplitude.

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TM 180 Forces Reciprocating Engines

TM 180 Forces Reciprocating Engines
  • TM 180 Forces Reciprocating Engines
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BrandGunt
Number of cylinders4
Crank radius15 mm
Length of connecting rod70 mm
Centre distance of cylinders35 mm
Voltage230 V

Every reciprocating engine generates mass forces. The mass forces of the oscillating masses cannot be compensated completely, while the mass forces of the rotating masses are fully compensated. By using several cylinders it is possible that the forces compensate each other. However, disturbing moments may still occur. The experimental unit TM 180 enables investigation of the free masses and moments of a reciprocating engine with a single cylinder, with two cylinders or with four cylinders.

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TM 620 Bending Elasticity Rotors

TM 620 Bending Elasticity Rotors
  • TM 620 Bending Elasticity Rotors
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BrandGunt
Weight49 kg approx.
Max speed3000 min-1
Power25 kW
Rotor shaft lenght500 mm
Voltage230 V

Critical speed and resonance are phenomena that play essential roles in many machines and systems. In particular, resonance states with impermissibly high vibration amplitudes can occur in rotating shafts and rotors at certain speeds, which in some cases can even lead to destruction of the machine. To prevent this, the system is operated well above or below the critical speed and driven quickly through the critical speed range. Therefore, knowledge of critical speeds and vibration modes is important in the design and operation of machines with bending elasticity in their rotors.
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TM 170 Balancing Apparatus

TM 170 Balancing Apparatus
  • TM 170 Balancing Apparatus
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BrandGunt
Number imbalance masses4
Max total imbalance880 cm
Dimension420x400x380 mm (LxWxH)
Weight26 kg approx.

Imbalances on rotating machines are often the cause of disruptive vibrations and noise. During imbalance, the principal axis of inertia or centre of gravity of the rotating machine component is outside its axis of rotation. By adding or removing masses, the centre of gravity or the principal axis of inertia can be shifted so that both coincide with the axis of rotation. This process is called balancing. The machine component is then balanced and runs without vibration.
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TM 625 Elastic Shafts

TM 625 Elastic Shafts
  • TM 625 Elastic Shafts
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BrandGunt
Weight65 kg approx.
Shafts Dimension3 - 7 mm
Shafts Length600 - 900 mm
Voltage230 V

The terms “critical speed” and “resonance” are often used when referring to rotating systems. Resonance occurs when the natural frequency and the excitation frequency match. The natural frequency of an oscillatory system is that frequency at which the system oscillates with the associated natural mode after a single excitation. Operation at critical speed can damage the system because of the high vibration amplitudes. In order to study the phenomenon of shaft vibration in more detail, there are two simplified calculation models. In the first case, the mass of the elastic shaft is evenly distributed along its length. In the second case, the shaft consists of massless, elastic shaft sections and the masses are combined into discrete mass disks.
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TM 150 Vibration Trainer

TM 150 Vibration Trainer
  • TM 150 Vibration Trainer
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Product Details:

BrandGunt
MaterialStainless Steel
Thickness3 - 6 mm
Torsion bars length800 mm

The TM 150 vibration trainer can be used to study many topics from the field of vibration theory through experimentation.

The topics range from simple pendulum-swinging forced vibrations with resonance to vibration absorption.

 

The central element of the vibration trainer is a sturdy profile frame, to which the different experimental setups are easily attached. The extensive accessories are housed in a mobile laboratory table with drawers. In addition to free vibrations, forced vibrations can also be represented by means of an electric motor imbalance exciter. The excitation frequency is set and displayed on a control unit.

 

An oil damper allows the study of damped vibrations with adjustable damping ratios. Vibration absorbing is demonstrated with a tuneable bending oscillator. A mechanical drum and a polar chart recorder make it possible to record vibrations.

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Post Box No. 42, O. S. A. W. Complex, Jagadhri Road
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