TRAILER BUYER GUIDE

Agriculture & Commodity

Gravity hoppers and agricultural tenders configured for grain, seed, fertilizer and related commodity handling.

highway grain hopper semitrailer showing twin gravity-discharge hopper architecture
BUYING & SPECIFYING

Choose around the work.

Grain and agricultural commodity trailers are selected by the product, unloading interface and combination. A gravity hopper releases cargo through traps; an agricultural tender may add conveying equipment. A Super-B describes a combination arrangement rather than replacing the body identity.

Configuration decisions and the documentation to request
DecisionWhat changesAsk for
Commodity and cleanoutGrain, seed and fertilizer can require different liners, seals and contamination controls.Previous cargo, cleanout access and material compatibility
Traps and receiverHopper openings must work with the receiving pit or conveyor. Clearance under the traps can control access.Trap locations, discharge clearance and operating access
Single or coupled configurationAxles and body position affect the complete assembly.Lead/rear arrangement, coupling, tare and axle spacing

Inspect the actual trailer

  • Operate every trap and inspect seals, rollers and frames.
  • Inspect hopper slopes and seams for damage and corrosion.
  • Check tarp and moisture protection at the loading opening.
  • Confirm combination components and the actual equipped weight.

Plan the operating environment

Plan unloading around the receiver and product flow. Winter freezing, fertilizer corrosion and carryover between commodities require operation-specific attention. Do not use a hopper-bottom label as proof of a bottom-dump construction or permit class.

For route-specific checks, start with the applicable provincial authority. Alberta permit resources ↗ and Ontario permit resources ↗ explain their respective processes; neither is a Canada-wide clearance rule.

Manufacturer references

Editorial review: November 7, 2026. Manufacturer references describe their own products and options; use the exact build documentation for dimensions, ratings and installed systems.

PHYSICAL ARCHITECTURES

Trailer configurations

  • Gravity Hopper / Hopper-Bottom
  • Agricultural Tender
BUYER QUESTIONS

Facts that change the shortlist

  • Which commodity, hopper count and trap arrangement are required?
  • Is the trailer a single, lead, pup or Super-B position?
  • Does unloading rely on gravity, belt or another verified system?
SPECIFICATION CHECKLIST

Useful fields for this family

  • commodity
  • hopper count
  • trap/chute
  • axles
  • combination role
  • unloading system
COMMON TERMINOLOGY

Other names you may encounter

hopper bottom · grain hopper · grain trailer · seed tender

COMPARE CAREFULLY

Similar terms, different equipment

hopper bottom as belly dump · gravity wagon as highway semi-trailer

MANUFACTURER REFERENCES

3 documented models

3 specification references cover 1 trailer architecture. Open the specification library for model-specific documentation.

MODEL COVERAGE

Documented trailer configurations

Model references are supported by manufacturer documentation. Check each configuration for its available dimensions and ratings.

ARCHITECTURE REFERENCE

1 reviewed mechanism view

Each reference shows the feature that controls classification. It is not a dimension, rating, compatibility or availability source.

TRAILER MECHANISMS

Gravity body versus powered tender

The commodity body and verified discharge path distinguish a highway hopper from an agricultural tender; combination position remains a separate overlay.

Gravity hopper

Hopper cones and bottom traps create the gravity-discharge path.

Agricultural tender

A documented conveyor or auger transfers seed or fertilizer from the body.

Commodity, capacity, hopper count, conveyor rate and lead/pup/Super-B position require exact source evidence.
PHYSICAL BOUNDARY

How to identify this trailer family

A gravity hopper body or an integrated agricultural tender system is canonical here; commodity labels and combination position remain separate facets.

KEEP SEPARATE

Related equipment with a different purpose

  • Gravity hopper versus bottom / belly dump
  • Agricultural tender versus ordinary hopper
  • Belt / conveyor self-unloading body
  • Moving-floor / reciprocating-slat body
INSTALLED SYSTEMS

Components do not replace the trailer identity

  • Trap and chute system
  • Integrated conveyor or auger
  • Commodity-specific liner or cleanout package
COMBINATION OVERLAYS

Position does not duplicate the body model

  • Super-B
  • B-Train
  • Lead and pup