National Side Dump Trailers Facts and Features

Prioritizing efficiency, durability, and creativity

why we are the best

Choosing the right side dump trailer to add to your equipment fleet is an important decision. Our features and specifications tell the real story behind our quality manufacturing mission. We build our products with you in mind – and focus on strength, durability, efficiency, ease of use, safety and reliability.

Here’s why Side Dump Industries’ line-up of side dump trailers can help your business succeed and increase your bottom line:

GREATER DUMP ANGLE

Loads release faster from a straight side and greater dump angle. SDI’s 50° dump angle is nearly 10° more than other side dumps available! 50° dump angle also means less material sticking in the tub. Your load will come out quicker, with a cleaner tub.

INNOVATIVE DESIGN

The strongest points on a trailer frame are where the frame is supported…not in the middle. SDI’s design and tub material means a lighter frame and the ability to use the suspension you prefer…all while maintaining crucial stability. Our tubs are strong, yet flexible enough to allow for twisting without cracking.

STABILITY

A lower center of gravity means better stability on the road or on the job. SDI has the lowest center of gravity available on the market.

EASY MAINTENANCE

Grease banks for the hydraulic cylinders and 5th wheel plate come standard on each trailer. Tub pivot points are equipped with greaseless bearings.

Need even more reasons?

FABRICATED DEEP FRAME RAILS: SDI’s deep frame rails (including flanges and webs) are exclusively constructed of super tough, yet malleable Grade 100 Steel for more durability and longer life. SDI trailers carry the load over the suspensions of both the trailer and the tractor, reducing stress on the frame.
TUB SADDLES: Designed with a roller that includes greaseless bearings, eliminating the need for pivot greasing.
POSITIVE TUB LOCKS: Allows for easy switching of dump direction. Locks are designed to capture the center of the tub pivot roller, eliminating any chance of the lock slipping away from the tub. Locks are painted a contrasting color for easy visibility.
AIR RIDE SUSPENSION: Ridewell Air Suspensions are standard on all SDI air rides along with our 25,000 lb. parallel spindle axles.
5 1/2” CYLINDERS WITH 3” ROD : Durable and powerful. The 2 cylinders push 118,750 lbs. at 2500 psi.
2 DIRECTIONAL HYDRAULIC FLOW : Required for operation of SDI Side Dump Trailers. If tractor is not equipped with 2-way flow wet kit, then SDI’s Electric/Hydraulic Valve option must be added to the trailer.
AR450 STEEL: This steel is super tough, and allows for superior wear. AR450 is utilized in our tub floors and sides.
25” TUB LEADING EDGE TO TIRE : This means you dump your load away from the trailer, not under it.
OUTSIDE RIB DESIGN: SDI’s rib design leaves the inside of the tub cleaner without any obstructions.
TUB DRAIN: 2” drain with plug is standard on all models.
SEALED WIRING HARNESS: Custom made for proper fit, reducing labor costs and keeps moisture and dirt out of electrical system for longer life.
ELECTRICAL/AIR LINES : Routed along frame rails for easy maintenance.
QUICK CONNECT FITTINGS : DOT Push-lok fittings used wherever possible for ease of assembly and maintenance.
ABS: Wabco ABS system is easy to access and maintain.
AIR TANKS : Mounted under tub to protect all tanks, valves and plumbing from falling debris.
LED LIGHTS