Round Bottom Conveyors

Leak-Free Material Handling for Small Products

When you need a reliable way to move small, free-flowing materials like seed, grain, or feed up to 30° inclines, the O’Mara Round Bottom Conveyor is your go-to solution.

Our stationary, half-tube conveyors are specifically engineered to contain material, prevent leakage, and deliver smooth, efficient transport over short or moderate distances. Built with heavy-duty steel, precision components, and exceptional guarding, these belt conveyors combine performance, safety, and durability all in a compact, enclosed design.

Whether you’re handling delicate seed, fine grain, or powdery feed, O’Mara Round Bottom Conveyors offer the perfect balance of strength and control for consistent, high-quality results.

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What Is a Round Bottom Conveyor?

A round bottom conveyor, sometimes called a half-tube belt conveyor, features a curved, semicircular trough that fully contains and supports the product being conveyed.

This rounded shape naturally centers material, reduces buildup, and prevents leaks or product loss, making it ideal for smaller, lighter, or free-flowing materials. The design also promotes self-cleaning, improving sanitation and reducing downtime between runs.

Unlike flat or U-trough conveyors, round bottom conveyors provide gentle handling that preserves product integrity while minimizing waste and wear.

How Round Bottom Conveyors Work

Curved Trough Design: The belt or flighted chain runs inside a semicircular enclosure that cradles the material, keeping it contained.
Continuous Movement: A direct-coupled drive powers the system, moving material evenly through the trough, even at steep inclines.
Self-Cleaning Action: The curved surface and tight fit between components minimize residue buildup, reducing contamination and maintenance.
Customizable Components: Drives, belts, and trough liners can be configured to match your product characteristics and environmental needs.

This combination of enclosed construction, careful conveying, and precision engineering makes the O’Mara Round Bottom Conveyor a standout performer in bulk material handling.

Key Features of O’Mara Round Bottom Conveyors

Compact Enclosed Design: Prevents product loss and protects materials from contamination.
Heavy-Gauge Construction: 10-gauge drive and take-up terminals with 12-gauge intermediate sections for long-lasting durability.
Formed Radius Trough: Smooth, curved interior keeps materials moving and reduces buildup.
9” Galvanized Return Idlers: Spaced 60” O.C. and double-punched for perfect belt tracking.
Direct-Coupled Drives: No belts or chains to maintain—quiet, efficient, and reliable operation.
Crowned & Lagged Pulleys: Improve belt tracking and extend component life.
Standard Powder-Coat Finish: Corrosion-resistant, durable, and available in your choice of color.
Exceptional Guarding: All moving parts, bearings, and drives are fully guarded to meet or exceed safety standards.

Benefits of Round Bottom Conveyors

1. Leak-Free Operation

The rounded, enclosed trough completely contains material, reducing spillage and protecting the surrounding area.

2. Gentle Product Handling

Ideal for delicate or small materials, like seed, grain, or animal feed, that could be damaged by more aggressive conveying systems.

3. Self-Cleaning Efficiency

The smooth, curved interior helps prevent product buildup, making cleanouts faster and reducing contamination risk.

4. Compact, Efficient Design

Moves product efficiently in tight spaces or along inclines—up to 30 degrees—without sacrificing throughput.

5. Built for Long Service Life

With heavy-gauge steel, sealed bearings, and precision construction, these conveyors perform reliably in high-use environments.

Standard Specifications

Belt Widths: 8”, 10”, 12”, 16”, 20”, and 26”
Incline Range: Up to 30°
Frame Construction: 10-gauge terminals, 12-gauge intermediate sections
Roller Diameter:9” galvanized return idlers
Pulley Sizes: 6”–16” diameters (crowned and vulcanized)
Motor Options: TEFC 208–230/460V 3-phase or 230V single-phase motors
Drives: Gear reduction, right-angle, or chain final drives
Finish: Powder coat standard; galvanized or stainless steel optional

Optional Conveyor Features

Galvanized hip-roof top weather covers
Expanded metal or solid hinged bottom covers
Discharge chutes (lined or unlined)
Belt skirting (rubber, metal, or hybrid)
Reversing center drives
Inlet boxes and receiving hoppers
Structural supports and truss frame options
Anti-static UHMW trough liners for product protection
Stainless steel construction for corrosive or washdown environments
Belt misalignment and speed sensors for safety monitoring

Applications Across Industries

O’Mara Round Bottom Conveyors are trusted in industries where clean, gentle, and efficient material handling is critical:

Agriculture: Conveying seed, grain, feed, and dry fertilizer.
Food Processing: Transporting powdered food, sugar, or ingredients with minimal contamination.
Feed Mills: Moving DDGs and other animal feed ingredients.
Manufacturing: Handling powders, pellets, and small granular products.

No matter your material or process, O’Mara’s round bottom design delivers consistent, controlled movement with less waste and better sanitation.

Why Choose O’Mara Round Bottom Conveyors

Precision Engineering: Every conveyor is custom-designed to match your specific material and process.
Heavy-Duty Construction: Fabricated from high-quality steel for long-term reliability.
Flexible Configurations: Multiple belt types, drives, and finishes available.
Safety and Quality: Fully guarded systems built to exceed industry safety standards.
American-Made Excellence: Designed and manufactured with pride by O’Mara—an industry leader in bulk handling innovation.

Technical Highlights

Maximum Incline: Designed to handle materials on inclines up to 30 degrees for flexible installation in tight or elevated layouts.
Belt Widths: Available in standard sizes from 8 inches to 26 inches, accommodating a wide range of material volumes and flow rates.
Frame Construction: Built with 10-gauge drive and take-up terminals and 12-gauge intermediate sections for exceptional strength and long service life.
Trough Design: Features a formed, welded round bottom trough that prevents buildup and ensures consistent, leak-free material movement.
Drive Options: Choose from direct-coupled, gear reduction, or right-angle drives to match your operational requirements and available power sources.
Guarding: Every conveyor is delivered with fully integrated guarding on all moving parts for maximum operator safety.
Optional Liners: Add UHMW or stainless steel trough liners for anti-static performance, product protection, and reduced wear.
Finish Options: Standard powder-coated finish for corrosion resistance, with galvanized or stainless steel options available for demanding or washdown environments.

When You Need to Move Small Products with Big Precision — Choose O’Mara

When it comes to seed, grain, feed, or other fine materials, nothing moves them cleaner, safer, or more efficiently than the O’Mara Round Bottom Conveyor.

Built for long life, engineered for precision, and designed for easy maintenance, these conveyors deliver proven results in every application. Let our experienced engineers help you design the perfect conveyor solution for your operation.