Inertial Cap Tightener

The inertial cap tightener has a fractional horsepower motor that is suspended above the capping area and a flexible shaft that is attached to the chuck. The motor rotates the chuck to a speed of about 1700 R.P.M. The operator quickly presses the chuck against the cap, the rubber liner grips and rotates the cap. At the time the liner grips the cap, there is no drive power from the motor to the chuck. However, the high speed rotation and weight of the chuck have a large amount of inertial force. This force is transferred to the cap at the moment when the chuck contacts the cap. The force will tighten the cap, normally 1-1/2 rotations, and stop. Because the rotation speed is so high, it will seem to stop at contact. Because the rotation stops when the cap is tight, there is no pressure on the operator's wrist. To adjust the amount of torque, weights are added to or removed from the chuck.

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PCT Pneumatic Cap Tightener

The PCT cap tightener uses an air motor to develop torque. The chuck begins to rotate when the chuck is pressed on the cap and the lever is pressed to start the air motor. The the rubber liner grips and rotates the cap until the force of the air motor can no longer rotate the chuck. When the cap is tight, the operator releases the lever and removes the chuck from the cap. To adjust the amount of torque, the air flow and air pressure can be adjusted.

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ECT Electric Cap Tightener

The ECT cap tightener has a fractional horsepower motor that is in the hand piece. The motor begins to rotate when the chuck is pressed against the cap. The the rubber liner grips and rotates the cap until the torque reaches the set force on the clutch, then the clutch releases. When the cap is tight, the operator removes the chuck from the cap. To adjust the amount of torque, the clutch is adjusted.

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