• Adjustable Spreader Chutes
  • Backup Alarm
  • Trailer Hitch With 7-Way Plug
  • Ground-Level Tarp
  • Remote Operation of ROTO
  • Crossover Tool Box
  • Coal Chutes (Manual or Hydraulic)
  • Spare Tire Carrier
  • Fenders Above Rear Tandems
  • Bed-Mounted Vibrator
  • Rail Dogs (Manual or Hydraulic)
  • Light Bars & Work Lights
  • Chain Steps

Roto-180 Rotating Dump Body

The DMF Roto-180 is a rotating dump body that permits its user to deposit the contents of the bed anywhere within a 180° arc. Between the dump body and the truck chassis lies its hydraulically actuated sub-frame which is the heart of the Roto-180. It is a two-piece structure that joins the truck and dump body by means of a massive, durable 43″ industrial roller bearing. The sub-frame also houses multiple hydraulic cylinders and a custom-designed manifold that controls the lift, swing, and tailgate release functions via an in-cab panel. The standard Roto-180 is a 12′ long, 10-12 cu. yd. dump body. There are also options for 10′ long, 5-7 cu. yd. and 14′ long, 12-14 cu. yd. models.


Chassis Requirements

The following information is furnished to establish the general chassis guidelines for installation of a DMF Roto-180, rotating sub-frame. It is not intended to be a complete truck specification sheet. Consult with DMF or your truck equipment dealer to assure that all equipment will operate safely with the chassis you are ordering.

When purchasing a chassis for a DMF Roto-180, please keep the following information in mind:

For a standard 12′ long 10-12 cu. yd. body to be mounted on a chassis having a standard tandem rear suspension, a minimum CT of 87″ is required. The truck will also need sufficient after frame to mount the rear railgear bracket.

The truck will also require a PTO and hydraulic pump capable of producing approximately 21 gpm flow at 2,000 psi. The truck should also have a 30-gallon hydraulic reservoir and a suction filter to keep the system clean. An underframe exhaust system is preferred. However, some stack systems are acceptable if they do not obstruct the cab shield and allow rotation of the dump-body past the cab.

Raildogs are required when the DMF Roto-180 is used in conjunction with RW-1630 railgear. Manual raildogs require 12″ of clear frame in front of the rear tires for mounting and operation. Hydraulic raildogs need 24” of clearance. Battery boxes and/or fuel tanks may need relocation to accommodate raildog installation.

Refer to DMF Roto-180 general specifications for more information.



1/4″ floor & 10 ga. 50,000 yield steel sides with formed top rail. Fully-welded 10 ga. taper box-type side braces, inside corners chamfered 45 degrees at floor and full-length sloping rub rails to shed material for safe, positive cleaning.


Hi-tensile steel with formed top rail. Boxed reinforcements and sloping lower brace.


Upper is fabricated steel weldment with oversize pin. Lower hook engages tailgate pin from top. Keyhole eye keeps tailgate in position.


1/4″ steel 30″ long x full width with fixed side plates.


Welded 3″ structural channel cross members and 5″ x 2″ x 1/4″ box type longitudinals, fully gusseted.


10 cu. yd. bed dimensions are 84″ inside x 144″ long with 40″ high walls, 46″ high tailgate, pockets provided for side boards.


Hoist, rotation and tailgate actuator functions are controlled by 12V DC solenoid valves activated by cab-mounted toggle switches.


Hoist is restricted to 45-degree dump angle by 12V DC limit switch. Tailgate automatically opens when dump angle exceeds 22.5 degrees; two-hand control is required to override this feature. A safety strut is provided for use when servicing unit.


Mechanism consists of no linkage or moving parts other than main bearings and hydraulic cylinders. No special tools are required for service. Contact surfaces on cylinder pins have grease-ways which are ported to a bank of grease fittings which are reached from ground-level without moving the unit.


Power Source: pto/pump combination
System Requirements: 21 gpm at 2,000 psi
Reservoir Capacity: 30 gal. (minimum)
NOTE: The two return lines from a Roto-180 must be routed directly to the tank and must NOT be combined or manifolded with each other or with other equipment.


Subframe: Heavy-duty wide flange
Hoist Speed: 50 secs. to 45 degrees
Mounting Height: 14″
Dump Angle: 45 degrees
Hoist Cylinder: Telescoping (3 stage single acting).
Hoist Cylinder Bore/Stroke: 5-4-3 x 104
Turning Speed: 1/2 rpm
Swing Actuator: Hydraulic cylinders
Thrust Bearing: Diameter — 43″ max. moment load — 120,000 ft./lbs.
Hydraulic Valves: Manifold