Single Ram Baler vs Two Ram Baler: Which One Is Right for You?

Industrial balers are widely used to compress scrap nowadays. Balers may look similar from the outside, but their internal ram configurations can affect how materials are compressed, discharged, and handled. Two common designs are single ram balers and twin ram balers. However, which one is right for you?

This article will guide you through the differences between the single ram baler and the two ram baler and how to choose the right baler for you.

What Is a Single Ram Baler? 

The single ram baler is a compacting machine that uses one primary ram to compress materials inside the baling chamber.

The ram is an essential component of the baling process. The drive system converts pressure into mechanical force, and the ram is then actuated to press the fed materials into dense and compacted bales. 

The single ram baler is widely used in many industrial scenarios. It can be used for metal scrap, cardboard, plastics, textiles, and other recyclable materials. In metal recycling, the car baler is a typical example of a single ram baler. 

What Is a Two Ram Baler?

The two ram baler, also known as the twin ram baler or dual ram baler, is a baling machine that contains two rams inside the compression chamber.

The two rams do not perform the same function. There is a main ram, and the other one is called the ejector ram. When processing scrap, these two rams operate differently. Once materials are delivered into the compression chamber, the main ram is moved forward by the drive system to press and deform the fed materials to the required volume and density. 

When the compacting process ends, the control valve is activated, and the ejector ram starts to work. Its main function is to push the finished bales out of the compression chamber. After this process, both rams reset for the next processing cycle.

This two-ram configuration is commonly applied in facilities requiring high-capacity recycling systems, efficient bale discharge and continuous material handling.

Key Differences: Single Ram Baler vs Two Ram Baler

The number of rams leads to several differences in operation and in performance. Four key differences are presented as follows:

Structure and Bale Ejection

The structural difference lies in the number of rams inside the baling machine. For the single ram baler, the ram only works on compacting the materials, while the two rams in the twin ram baler perform separate functions. 

The most significant difference is that the two-ram baler has a dedicated ejector ram for side ejection. The main ram performs the same function as the ram inside the single ram baler; however, the additional ejector ram helps with the discharge of the finished bales by pushing them out of the compression chamber.

Processing Capacity

Ram configuration is one of the factors affecting the processing capacity. The key difference lies in how efficiently each design handles continuous operation.

The dedicated ejector ram of a twin ram baler can make bale discharge more efficient and allow the machine to reset for the next cycle. The finished bales are transferred from the compression chamber so that the next baling cycle can operate continuously.

Applicable Materials

Although the single ram baler and the two ram baler can both process various scrap, they have their own strengths in handling different materials.

The single ram baler is more suitable for relatively consistent and deformable scrap, like end-of-life vehicle bodies, lightweight scrap steel, metal stamping waste and aluminum components.

For loose, mixed and high-rebound materials, such as plastics, cardboard, aluminum cans and other industrial waste, the twin ram baler is commonly used.

Installation and Mobility

Though mobility depends largely on the overall machine design, some single ram balers offer greater flexibility in installation and relocation. For example, the ENERPAT Mobile Car Baler is available in both mobile and stationary configurations. The mobile version can be relocated between scrap yards or processing sites, making it suitable for on-site operations.

Twin-ram balers, by contrast, are typically larger industrial systems designed for fixed recycling facilities and integrated processing lines.

Are All Balers Either Single Ram or Two Ram?

Single-ram and two-ram designs are two common ram configurations used in balers, but they are not the only way to classify baling machines. Other common classification criteria include the compression direction, the automation level and the method.

Balers with three or even multiple rams also exist. Triple balers are designed for heavy metal scrap. They can press the target material in different directions at the same time. What’s more, some extra-large automated equipment utilizes multiple rams to realize higher automation level and baling efficiency.

How To Choose the Right Baler?

To determine whether a single-ram or twin-ram baler is the better fit for your operation, consider the following four factors:

Operating Environment

First, consider where the baler will operate.

The single ram baler is more suitable for flexible on-site working scenarios. If you plan to use balers at scrapyards, ELV dismantling sites or temporary processing sites, you may consider a single ram baler.

In contrast, in recycling plants or waste-processing sites where a fixed, efficient and continuous processing system is highly valued, the two-ram baler fits this operating environment better.

Material Characteristics

Take an inventory of the waste your facility handles.

If your waste mainly consists of deformable metal scrap such as vehicle bodies or sheet metal, a single-ram baler may be sufficient. 

By contrast, a twin ram baler is more suitable for processing mixed, loose or high-rebound materials like MSW, industrial waste, paper, plastics, metals.

Scrap Volume

Estimate how much scrap your facility generates. 

For relatively small or moderate amounts of waste, a single-ram baler is often sufficient and can provide a simpler, more economical solution.

The twin ram baler may be worth considering when you need to process your scrap continuously for long operating hours, or your facility handles large volumes of different materials. 

Required Bale Density and Size

Consider the bale specifications required for storage, transport, or downstream processing.

If standard bale density and size are sufficient for storage or local transport, a properly sized single-ram baler may already meet your needs.

To get highly consistent, dense bales, a twin-ram baler may offer greater control over bale formation.

Typical Models of Single-Ram and Two-Ram Balers from ENERPAT

To illustrate how these two configurations are used in practice, here are two representative ENERPAT models.

Mobile Car Baler

The ENERPAT AMB-SC Series Mobile Car Baler is a single-ram car baler for ELVs, light scrap steel, and mixed metal. Its single hydraulic ram compresses scrap directly in a 5，250 mm chamber, creating dense, uniform bales for easier storage and transport.

With capacities of up to 15.6 tons per hour for ferrous scrap and 7.8 tons per hour for aluminum, it is available in both mobile and stationary configurations for flexible scrap-processing operations.

Two-Ram Baler

The Automatic Two Ram Baler is built for high-volume recycling operations. Its 148-ton main ram handles compression, while the 88-ton ejector ram pushes finished bales out quickly for continuous operation. 

With a cycle time of about 15 seconds, it is suitable for industrial waste, paper, plastics, metals, and other high-rebound materials, producing dense bales weighing up to 750 kg.

FAQ

Q: Which baler is better for mixed materials?

A: Generally, you can consider twin ram balers for mixed materials, especially loose, bulky and high-rebound materials. However, your final decision should take specific machine specifications into account.

Q: Do two rams in a twin ram baler work at the same time?

A: Not exactly. The two rams perform different functions. The main ram presses the target scrap. Then the ejector ram pushes the finished bale out.

Q: Which baler requires less maintenance, a single-ram or twin-ram baler?

A: Since a single ram baler generally has fewer components, the routine maintenance tends to be simpler. the maintenances of the twin ram baler also include the additional ejector design and the related components. 

Q: Is a twin ram baler always more powerful than a single ram baler?

A: Not necessarily. The number of rams does not directly determine the compression force. Actual compression force depends on factors such as the hydraulic system, cylinder size, and machine design. A twin-ram baler mainly differs in that it has a separate ejector ram for bale discharge.

Final Thoughts

The single ram baler and the two ram baler each offer distinct advantages for different recycling operations. The right choice depends on factors such as your material type, scrap volume, operating environment, and bale requirements.

If you are looking for the right industrial baler, ENERPAT offers both single ram and two ram baling solutions for a wide range of recycling applications.  Contact ENERPAT to discuss your specific requirements and find the perfect machine for your business.