Pulverizer, Model 500DG-1, Extended Hopper 115/1/60Hz

91-7120-02Holmes #500DG-1, Pulverizer, 6x2, 1HP

Model 500DG-1 has a capacity of 400 grams of coal per minute using a screen with 0.024" diameter perforations and is recommended to pulverize minus-4 mesh coal to minus-60 mesh.


  • The feed hopper has a vinyl snap-on cover.
  • The pulverizing chamber is completely machined and sealed.
  • A quick-opening latch provides easy access to the pulverizer and interrupts power to both motors when the door is open.
  • The one-piece, dynamically balanced rotor is easily cleaned.
  • Screen plates are circles with the loose ends held by two lock pins that extend into the pulverizing chamber. Available perforation diameters are (in inches) 0.020, 0.024, 0.033, 0.040, 0.0625, and 0.093. Also available are 0.010 X 17/32 inch slots.
  • The 390-cubic inch (6390 cm³) sample cup is spring-loaded against the seal. The hand lever will release the cup.
  • The feed auger is chain-driven from an enclosed 1/8 HP, 2.7 amp, 115 volt, single phase, 60Hz TEFC gear motor. The auger speed is about 130 rpm.
  • The rotor is mounted on the shaft of a one HP, 115 volt, single phase, 60Hz, 12 amp, permanent magnet, open motor. The speed is about 10,000 rpm.
  • A Nema-1 motor starter has overload protection for each motor. The open-latch sensor cuts the power to the motors.
  • Overall Size: 25"H x 19"W x 19-1/2"D; Shipping Weight 130 lb
  • The pulverizer is mounted on four rubber base pads.

Supplied with

  • An extended 180-cubic inch (2950 cm3) capacity, feed hopper
  • Five screen plates  
  • About 10 feet of cable to connect to the power source. 
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91-7120-02Holmes #500DG-1, Pulverizer, 6x2, 1HP By Quote Only
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