Side Dump Trailers

Why buy a Demco Side Dump Trailer?

1) Low Center of Gravity - the bottom of the tub sits inside and below the top of the chassis frame rails

  • Stability when pulling and cornering and the tires stay grounded when dumping
  • Reduces the risk of tipping over the trailer during the dump cycle without sacrificing the proper dump angle and creates a lower loading height.

2) 3 Pivot points on each side of the trailer the tub rotates on

  • It evenly distributes the pressure of the dump
  • Improves the stability and longevity of your trailer

3) The only trailers you can change directions right form the driver's side

  • You cannot accidentally unlatch all four corners of the tub at once. This action could cause considerable expense or safety issues by wrecking the tub, cylinder, or even dump on the wrong side than originally intended

4) The trademarked FlexCorner design allows for flexibility to maintain the structural integrity of the tub and eliminates cracking of the welds

  • The corners allow the trailer to flex between the main corners and the G-Rail when transporting and dumping
  • The flex at the corners are like shock absorbers and eliminate the need for added welds and repair

5) Faster unloading

The Demco SD have cylinders located at each end of the tub. The design can speed up cycle time

6) CORSOL® corrosion solutions

Want More Visibility?

Upgrade to the new Demco Strobe lights for extra precaution in the job site.

Tandem and Tri Axle Specifications

ModelSuspensionChassis Length
Wheel Base
Axle Spacing
Tub Length
Tub Volume
Tare WeightOptional 37' Tub
35' Tandem
Spring or Air Ride
35'-4"324.5"49"30'-3"21.4 cu. yd.
13,640 lbsN/A
40' TandemSpring or Air Ride40'-5"383"49"34'-3"22.7 cu. yd.
15,680 lbsN/A
35' Tri Axle
Spring or Air Ride35'-4"324.5"49"30'-3"21.4 cu. yd.16,500 lbsN/A
40' Tri AxleSpring or Air Ride40'-5"383"49"34'-3"22.7 cu. yd.17,000 lbsN/A
42' Tri AxleSpring or Air Ride42'-1"404"49"34'-3"22.7 cu. yd.17,500 lbsN/A
44' Tri AxleSpring or Air Ride44'-2"428"49"34'-3"22.7 cu. yd.17,900 lbs24.5 cu. yd.
44' Tri AxleSpread Air Ride
44'-2"417"60"34'-3"22.7 cu. yd.17,900 lbs24.5 cu. yd.
46' Tri AxleAir Ride Closed/Open
45'-8"377"49" / 79"
34'-3"22.7 cu. yd.18,000 lbsN/A
47 Tri AxleAir Ride Closed/Open47'-2"395"49" / 79"37"N/A18,200 lbs24.5 cu. yd.

Quint Axle and Quad Axle Specifications

ModelSuspensionChassis LengthWheel BaseAxles 1-2Axles 2-3Axles 3-4Axles 4-5Volume 34'-3" TubTare WeightOptional 37' Tub
44' Quad Rear LiftAir Ride44'-4"330"49"49"49"N/A22.7 cu. yd.18,500 lbs24.5 cu. yd.
44' Quad Rear Lift Lift/SteerAir Ride44'-4"335"49"49"60"N/A22.7 cu. yd.19,200 lbs24.5 cu. yd.
47' Quad FL/RLSAir Ride47'-2"395"49"49"60"N/AN/A19,500 lbs24.5 cu. yd.
44' QuintAir Ride44'-4"243 1/32"97"49"49"49"N/A20,800 lbs lbs24.5 cu. yd.

Truck - Tractor Hydraulic System Requirements

Efficient, safe operation of side dump trailers require that the tractor hydraulic system provide a clean, high pressure, high volume oil supply.

The hydraulic pump pressure should be set at 2500 PSI with a minimum output of 25 GPM supply and a minimum 15 gallon filtered and strained reservoir.

Generic Tractor Hydraulic System diagram.

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