What to Do When You Only Have 4 Inches of Clearance for a Conveyor

Four inches of clearance does not leave much room to work with.

When you are trying to remove scrap or parts from under a press, machine, or tight production area, a standard conveyor usually will not fit. Even if you can squeeze something into the space, that does not always mean it is the right solution.

In low-clearance applications, the wrong conveyor can create more problems than it solves. Scrap can jam, belts can wear out, parts can get trapped, and maintenance can become a regular part of the job. The goal is not just to fit a conveyor into the space. The goal is to move the material reliably without creating a constant headache.

When you only have about 4 inches of clearance, there are usually three main options to consider:

Low profile belted conveyors
Shaker systems
Low profile magnetic slide conveyors

Each option can work in the right situation, but they are not all equal. The best choice depends on the material, the environment, and how demanding the application is.

Low Profile Belted Conveyors

Low profile belted conveyors are often one of the first options people think about. They are common, relatively simple, and can be built thin enough to fit into tight spaces.

In lighter-duty applications, they can work fine. A thin belt can carry small parts or light scrap out from under a machine without taking up much room.

The issue is that the belt is exposed to whatever you are trying to move.

If the material is sharp, heavy, oily, or inconsistent, the belt can become a wear item pretty quickly. Scrap can tear the belt, stretch it, or cause tracking problems. Once the belt starts to mis-track, the conveyor usually needs attention before it gets worse.

Jamming is another common concern. In a tight conveyor opening, scrap can get trapped between the belt and the side of the conveyor. Even a small piece wedged in the wrong spot can stop the belt or cause it to run poorly.

That does not mean belted conveyors are bad. It just means they should be used with a clear understanding of the application. For lighter-duty, cleaner, less aggressive material, they may be a practical option. For sharp metal scrap or high-use production environments, they may not be the best long-term answer.

Shaker Systems

Shaker systems are another strong option for low-clearance applications.

Despite the name, these systems are not really vibratory conveyors. They use a controlled back-and-forth linear motion to move material forward. A simple way to picture it is the old tablecloth trick. The tray moves back quickly, then returns forward more slowly. That motion helps index the material forward along the tray.

Electric shakers commonly use a short stroke, often around 1 to 2 inches. Because there is no belt, chain, or exposed rotating part under the material, there are fewer places for scrap to get caught.

That is one of the main reasons shakers work well in tight spaces. They can move scrap or parts without creating the same pinch points you might see with a belt conveyor.

A properly designed tray is important. Tight-fitting side guides and good tray layout help keep the material moving in the right direction instead of letting it wedge along the sides. In a 4-inch clearance application, small design details matter.

Shakers can also be a good fit when oil or coolant is involved. The tray can help contain fluid and direct it toward a controlled discharge point. Depending on the plant and application, shakers can be powered electrically or pneumatically.

For mixed materials, light parts, stampings, or applications where a belt would be too exposed, a shaker system is often worth considering.

Low Profile Magnetic Slide Conveyors

For ferrous scrap, a low profile magnetic slide conveyor is often the most reliable option.

These conveyors are designed for tight spaces and use internal magnets to move material along a sealed surface. The scrap rides on top of the conveyor surface, while the moving magnetic assemblies are protected inside the conveyor.

That design is a major advantage in low-clearance areas.

There is no exposed belt for sharp scrap to tear. There are no hinged belt openings for material to get trapped in. The moving components are not directly exposed to the scrap, which helps reduce jamming and maintenance.

For stamping scrap, slugs, small ferrous parts, and other steel material, this can be a very clean solution. The conveyor can sit under the press or machine, collect the scrap, and move it out to a discharge point without relying on an exposed belt.

Companies like Storch Products Company build low profile magnetic conveyor designs specifically for these types of constrained applications. When the material is ferrous and the space is limited, this type of conveyor can solve a problem that standard conveyors struggle with.

How to Choose the Right Option

The best conveyor depends on what you are moving.

If the material is ferrous scrap and the goal is long-term reliability, a low profile magnetic slide conveyor is usually the strongest option.

If you are moving mixed materials, light parts, or material that does not respond to magnets, a shaker system may be the better fit.

If the application is light-duty and cost is the main concern, a low profile belted conveyor may still make sense. Just be realistic about belt wear, tracking, and possible jams.

The most important thing is to avoid choosing based only on clearance. Fitting inside a 4-inch space is only part of the problem. The conveyor also has to survive the material, handle the production rate, and keep running without constant maintenance.

Choosing the Right Low-Profile Conveyor

Having only 4 inches of clearance is challenging, but it does not mean you are stuck with a poor solution.

The right low-profile conveyor can remove scrap or parts reliably, reduce cleanup, and help keep production moving. The key is matching the conveyor to the material and the conditions around it.

For light-duty applications, a belt may be enough. For mixed materials or parts handling, a shaker can be a strong option. For ferrous scrap in a demanding production environment, a low profile magnetic slide conveyor is often the best long-term choice.

FAQ: Conveyors for 4 Inches of Clearance

Q: Can a conveyor fit in only 4 inches of clearance?
A: Yes, but not every conveyor style will work well. When clearance is that limited, you usually need a low profile conveyor designed specifically for tight spaces. Common options include low profile belted conveyors, shaker systems, and low profile magnetic slide conveyors.

Q: What is the best conveyor for removing scrap under a press with limited clearance?
A: If the scrap is ferrous, a low profile magnetic slide conveyor is often the best long-term option. It uses internal magnets to move scrap along a sealed surface, which helps reduce exposed wear points, belt damage, and jamming.

Q: Are low profile belted conveyors a good option for tight spaces?
A: They can be, especially for lighter-duty applications. However, belts are exposed to the material being conveyed. Sharp metal scrap, oil, heavy use, or trapped material can lead to belt wear, tracking issues, and maintenance.

Q: How does a shaker system move material in a low-clearance application?
A: A shaker system uses controlled back-and-forth linear motion to move material forward. The tray moves in a way that indexes the material along the surface without using an exposed belt, chain, or rotating conveyor component.

Q: When should I choose a shaker instead of a magnetic conveyor?
A: A shaker may be the better choice when you are moving non-ferrous material, mixed materials, light parts, or parts that do not respond well to magnets. It can also be useful when you want a simple tray-style system for moving material out of a tight area.

Q: Why do conveyors jam more often in low-clearance areas?
A: Tight spaces leave very little room for scrap to move freely. Small pieces can get wedged between belts, side walls, frames, or surrounding equipment. Once material starts building up, it can quickly cause tracking issues, stoppages, or manual cleanup.

Q: What should I consider before choosing a conveyor for a 4-inch clearance application?
A: Start with the material. Consider whether it is ferrous or non-ferrous, sharp or smooth, dry or oily, light or heavy, and how much material needs to be moved. Clearance matters, but the conveyor also has to handle the actual production environment.