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Speed Variation Accessory allows precise control of vibration speed on Testing Screen and Test-Master® machines. Control of vibration speed assures reliable separations of materials with specific gravities different from common mineral aggregates or for materials finer than No.4 (4.75mm). The TSA-154R for Testing Screens and TSA-153 for Test-Master® both feature a remotely-mounted digital controller that displays stroke values between 240 and 635 strokes per minute. Please inquire for retrofitting existing units.
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