Jones Manufacturing Co.

Model 2015: PTO Drive

Features  Specifications  Available Options

The Mighty Giant Model 2015 PTO Driven Tub Grinder

The Mighty Giant Model 2015 PTO Driven tub grinder is the most durable, highest capacity PTO tub grinder in the industry and it is designed for heavy duty commercial use. The tub tilts hydraulically (something we’ve been doing for over 50 years) for easy access to the hammers and screens. A multi-function remote control system is standard on all grinders. Screens are available in a wide range of sizes, with custom configurations available because we fabricate our own screens. The 14” discharge auger under the mill allows trouble free grinding with less mess under the machine.


  • Tub opens hydraulically for servicing and changing the screens
  • Tub hydraulic system uses a variable displacement hydrastat pump with electronic speed control for forward and reverse.
  • Trouble free high capacity 14” discharge auger
  • Elevators drive from the top with a rubber lagged pulley
  • Elevators hydraulically fold and unfold, hydraulically raise and lower, and hydraulically swing side to side to make a wider pile or to fill trucks.
  • Hammers have hard surfacing on all 4 edges so that they can be turned 4 times to use all 4 corners.
  • Pin hitch chassis with tandem axles and hydraulic brakes on both axles
  • Capable of grinding any type of Forage or Grain
  • Hand held remote control allows the operator to control tub and elevator functions from the loader tractor.
  • Highest capacity, most durable PTO Hay Grinder available


  • Horsepower: Uses tractors with up to 300 PTO horsepower
  • Grinder suspension:  20,000 lbs torsion spring suspension
  • Size of mill cylinder:  26" x 48"
  • Mill shaft diameter:  5"
  • Mill bearing size: 3 15/16” pillow block bearings
  • Number of hammers:  84
  • Hammer Size: 3/8” thick or 1/2” thick
  • Hammer Swing: 360 Degrees
  • Number of mill pins: 6
  • Mill pin size: 1 ¼” diameter
  • Mill disk thickness: 3/8”
  • Mill base: Constructed of rectangular tube with 3/8” plate auger trough sides and formed 10 ga. auger trough
  • Tub floor and walls: 12 ga.
  • Tub drive: Hydraulic motor with Heavy Duty Chain
  • Number of tub rollers: 8
  • Elevator: Hydraulic folding and lays over the top of the tub
  • Elevator size: 24” wide x 25’ long
  • Elevator drive: Hydraulic motor with chain drive to rubber lagged pulley on top end of elevator
  • Discharge auger: 14” diameter
  • Screen size: For dry material, round holes sizes up to 11” diameter, For wetter material, half screens various sizes
  • Overall height: approximately 11’-6”

Available Options: