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With the Model H micro drilling machine from Minitool, Inc., users can drill holes with 听 diameters ranging from 0.025 mm to 0.050 mm in materials such as steel, stainless steel, ceramics, plastics and other metals.
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According to the company, the customized drill guidance and precision in feed features 听 (the smallest in feed increment is 1 micron) 听 create round holes and favorable surface finish. Combined with the small-hole drilling capabilities, the manual control features also make the machine suitable for use in research laboratories.
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Inline, interchangeable vee bearings replace the conventional ball or sleeve bearings. The drills are mounted within an interchangeable drive pulley and held against the vee bearings by means of a drive belt. The company says that the drill essentially becomes its own spindle, virtually eliminating the runout that is a common factor in conventional machines using ball bearings, sleeve bearings, spindles, collets or chucks.
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