Duratech 2009 - Rotor; Screens; Tub

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2009 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
2.5 Screens
All DuraTech Industries tub grinders come equipped from the factory with two screens. The hole diameter of the
screens are specied by the customer at the time of purchase.
Any combination of hole sizes may be used to alter the coarseness of the output material. The coarseness of the ground
material is determined by the size of the screen holes. As the size of the screen holes becomes larger, the coarseness of
the ground material increases.
Round perforated screens are available with 1‑1/2”, 2”, 3”, 4”, & 5” round hole, and 6”x 7” demolition screen. The
1‑1/2” screen is made from 1/2” thick Hardox material; all other screens are 1” thick steel.
Note: If a combination of screens with different hole diameters are used, the screen with the smallest hole diameter is
normally placed on the down swing side of rotor.
gure 2.4
driveline, rotor, and screens
screen
hammer
driveline
screen hold
down
2.6 Tub
Material to be ground is loaded into the tub using a wheel loader or other suitable method. As the tub rotates, this
material is fed to the rotor. The faster the tub rotates , the more material is exposed to the rotor, and the greater the
load on the engine. The tub’s rotation speed is controlled by the electronic governor. To reduce the amount of material
thrown from the tub during operation, the tub should be kept 1/2 to completely full.
The 2009 DURATECH TUB GRINDER’s tub can be tilted 90 degrees for access to the rotor, screens, and drive line.
The tub has an electronic safety switch that will not allow the tub to be raised with the rotor turning. The switch
provides feedback to the operator through two indicator lights which are located on the control panel. If the green
indicator light is on, the operator may tilt the tub. Conversely, if the red indicator light is on, the safety switch will
prevent the operator from tilting the tub.
( REV. 08-04 )
( REV. 08-04 )
( REV. 08-04 )
2.4 Rotor
The rotor is the heart of the grinder. The standard rotor contains xed hammers and is used for general grinding.
Swinging hammers are available for use when grinding debris contaminated with tramp metal (Removal of all foreign
material is still recommended).