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Jovil/Universal Manufacturing Co.



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Model JV300
Toroidal Winding Machine
with Dual Preset Counter

The JV300 is a medium sized floor stand machine for the winding of medium to large size toroidal coils. The ability to accept 4 types of winding heads along with 3 sizes of taping heads makes this machine the most versatile in its class. Core sizes from 3.0 inch (76.2mm) to 17.0 inch (431.3mm). Wire sizes from #38 awg (0.1mm) to #7 awg (3.66mm).


Specification / Capabilities


Maximum wire size#7 AWG (3.66 mm)
Minimum wire size #38 AWG (0.1 mm)
Maximum coil O.D. 17.0" (431.3 mm)
Minimum coil O.D. 3.0" (76.2 mm)
Minimum coil I.D. 0.5" (12.7 mm)
Maximum coil height 7.0" (177.6 mm)
Maximum Coil weight 80 lbd (36.4 kg)
Winding speeds Variable depending on head
Wire spacing Automatic variable
Segment Winding Automatic reversal of core
Progressive Winding Automatic with optional microprocessor
Power requirement 120 Volt or 220 volt (50-60 cycles)
Crated dimensions 48" x 48" x 60" (121.4 x 121.4 x 151.8 cm)
Crated weight 750 lbs (340 kg)

Principal and Optional Features

  • Separate speed controls for loading and winding
  • Quick change heads for winding and taping, all using same core rotator
  • All heads from JV200 fit onto the JV300
  • Tape head controls
  • Standard dual preset counter with optional microprocessor is available
  • Core rotation direction reversed automatically or by push button switches
  • Automatic core index via puch button switch
  • Push button, on-off footswitch or variable footpedal operation
  • Wide range of magazines available for all heads



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