TwenteStack™ Self-Stacking Metal Conveyor Belt

Specifications

TwenteStack™

Our self-stacking spiral belt

TwenteStack™ is engineered for self-stacking spiral systems in food processing, where stable product handling, optimal airflow and process reliability are essential. Compatible with OEM drive systems and existing self-stacking belts, it eliminates the need for costly system modifications. Available in several widths, tier heights and mesh types, which can be tailored to your specific application.

Building on over a century of expertise in metal belt manufacturing, our new self-stacking spiral belt offers a reliable and cost-effective solution for both existing and new self-stacking spiral systems. Its optimized side plate design improves interlocking, reduces wear and increases belt durability, helping customers achieve longer service life, reduced maintenance and improved productivity.

Advantages of TwenteStack™

– Improved welding for stronger assembly
– Superior link interlocking and stacking stability
– Form-fit engagement in slot to reduce wear
– Energy efficient
– Cost-effective solution
– Optimized side plate design
– Compatible with existing and new self-stacking systems
– Hygienic design

Belt features

Stable stacking, predictable production
In a self-stacking system, everything depends on how cleanly each tier stacks onto the one below. The geometry of TwenteStack™ is built to keep that stacking consistent, tier after tier. Consistent stacking means predictable belt behaviour, and predictable belt behaviour is what keeps a spiral running without surprises.

Built to food processing standards
TwenteStack™ is manufactured in compliance with the food safety requirements that apply to food processing equipment, including the framework regulation EC 1935/2004 and EC 2023/2006 on good manufacturing practice (GMP). Combined with its open, cleanable stainless steel structure, this makes TwenteStack™ fit for use in hygienic production, from spiral coolers to freezers.

Configured to your system, not to a catalogue
Belt width, tier height, mesh type, wire diameter, product support, airflow: every self-stacking system sets its own requirements. TwenteStack™ is configured to match your existing installation and your product, rather than forcing your process to fit a standard belt.

Full stainless steel construction
TwenteStack™ is produced exclusively as a metal conveyor belt. No plastic modules, no hybrid construction: full stainless steel. That gives it the strength, dimensional stability and corrosion resistance required in industrial food processing, from deep freeze temperatures to intensive wash-down and cleaning regimes.

Built around uptime
Replacing a self-stacking belt is not only a technical decision. It touches uptime, product quality, maintenance planning and total cost of ownership. TwenteStack™ is engineered to keep proven spiral systems running reliably for years, without unnecessary modifications to the system.

Suitable for replacement projects
A self-stacking spiral freezer or cooler is a serious production asset. When the belt wears out, replacing the entire system is rarely necessary and economical. TwenteStack™ is suitable to replace the belt in systems that are already in service.

Belt specification

TWS 13 – 60 – 1.6 – 5 / H80

TWS – TwenteStack™
13 – Lateral pitch spiral wire (in mm)
60 – Pitch (in mm)
1.6 – Spiral wire diameter (in mm)
5 – Cross rod diameter (in mm)
H80 – Side plate height (in mm)

Range of dimensions

Belt pitch
Cross rod diameter
Collapse
Overall belt width
Materials
Available spiral wire diameters
Available lateral pitch spiral wire
Available side plate height
Useful width between side plates

60 mm (with cross rods every 30 mm)
5 mm
Bi-directional
420 – 460 – 510 – 580 – 640 – 660 – 760 – 920 mm
AISI 304 / 302
1.6 mm (1.4 – 1.7 – 1.8 mm are available on request)
6 – 9 – 13 mm (other lateral pitches are available on request)
60 – 80 – 100 – 120 mm
Belt width – 44 mm

Downloads

TwenteStack™ brochure

English

Replacing an existing self-stacking belt

When a self-stacking belt reaches the end of its service life, replacing the complete system is almost never the only option. In most cases the belt can be renewed while the existing installation stays in production. TwenteStack™ is developed for precisely that situation.

By concentrating on the belt itself, Twentebelt helps machine builders and end users extend the service life of self-stacking systems that are still perfectly capable of doing the job. Our team can review your current belt and system and determine whether TwenteStack™ is a suitable replacement.

Multiple Twentebelt colleagues discussing a drawing

To assess compatibility, we typically need:

– Current belt width
– Side plate height
– Lateral pitch of the mesh
– Wire diameter of the mesh
– Number of tiers
– Product load
– Dwell time
– Infeed length
– Outfeed length
– System type

Need a self-stacking replacement belt?
If your self-stacking spiral system needs a new belt, our team will help you find the right TwenteStack™ configuration. Send us your current belt specifications, or contact us for expert advice.

Request a quotation

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A dedicated partner

Our dedication to metal conveyor belts has resulted in high-quality steel belts with a long lifespan. We focus primarily on machine builders in the food industry for whom we manufacture customised conveyor belts. Our services go beyond just supply; we assist and support our clients during both the design and commissioning.

At Twentebelt, we strive to be your reliable partner by applying our experience and expertise to offer the best solutions for your transfer requirements. Contact us today to find out how we can help you with our high-quality, customised metal conveyor belts.

Our approach

TwenteStack™ self-stacking metal conveyor belt

TwenteStack™ is a stainless steel self-stacking conveyor belt engineered by Twentebelt for self-stacking spiral systems in industrial food processing. In a self-stacking spiral, the belt is not carried by a set of tiers or cage bars: it stacks on itself, so the belt is the carrying structure. This lets a self-stacking freezer or cooler run a very long belt in a compact vertical footprint, which is why self-stacking systems are widely used for freezing and cooling.

Because the belt carries itself, the belt is also the component that determines how the whole system performs. Stacking stability, tier support and dimensional consistency all come down to belt quality. TwenteStack™ is engineered around that reality, in full stainless steel, to deliver stable stacking and dependable long-term operation in demanding production environments.

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A self-stacking belt built for replacement and upgrade

Twentebelt focuses TwenteStack™ on what most operators actually need: a reliable replacement belt for a self-stacking spiral system that is already installed and running. A self-stacking freezer represents a major capital investment, and its frame, drive and infrastructure typically outlast the belt by a wide margin. Replacing only the belt keeps that investment productive while restoring the performance you had when the system was new.

The belt only, engineered to belt-specialist standards

TwenteStack™ is supplied as a metal conveyor belt, not as a complete conveyor system, spiral freezer or frame. Twentebelt does not build the system around the belt, and that is deliberate. Over a century of specialising in metal conveyor belts is what allows us to engineer a self-stacking belt to a standard that a system builder covering everything cannot easily match. For machine builders and end users, that means a belt partner who is fully focused on the single component that carries the load.

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Stainless steel construction for hygienic food processing

TwenteStack™ is produced exclusively in stainless steel, with no plastic modules. Its open metal structure supports airflow and effective cleaning, and it withstands the temperature extremes and wash-down regimes typical of food processing. The belt is manufactured in compliance with food safety requirements for food processing equipment, including the framework regulation EC 1935/2004 and EC 2023/2006 on good manufacturing practice (GMP). This makes it suitable for hygienic production in freezers, coolers and other self-stacking food processing systems.

Configurable to your existing self-stacking system

Every self-stacking spiral is different. TwenteStack™ is available in a range of belt widths from 420 to 760 mm, tier heights of 60, 80, 100 and 120 mm, and mesh types including M9 and M13, with further options on request. Configured to match your current belt and system, TwenteStack™ can in many cases help renew the belt while keeping the existing frame, drive and footprint in service.

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A stainless steel self-stacking belt, built to replace

TwenteStack™ combines a purpose-built self-stacking design with full stainless steel construction and the engineering focus of a dedicated belt manufacturer. For operators of self-stacking spiral freezers and coolers, it offers a straightforward way to renew a worn belt, restore reliable stacking performance and extend the service life of a proven system, without the cost and disruption of replacing the system itself.

As part of the Twentebelt portfolio, TwenteStack™ is engineered to perform consistently in the most demanding industrial food processing environments. Explore the full range of metal conveyor belts, including our TwenteFlex spiral belts.

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Frequently asked questions

What is TwenteStack™?

TwenteStack™ is a stainless steel self-stacking conveyor belt developed by Twentebelt for existing self-stacking spiral systems, such as spiral freezers and spiral coolers. It is engineered for stable stacking, reliable operation and long service life in food processing applications.

Is TwenteStack™ a complete conveyor system?

No. TwenteStack™ is supplied as a metal conveyor belt. Twentebelt produces the belt, not the complete conveyor system, freezer, frame or spiral installation.

Can TwenteStack™ replace an existing self-stacking belt?

Yes. TwenteStack™ is developed primarily to replace the belt in existing self-stacking systems. Compatibility depends on your current belt specifications, system design and operating conditions, which our team can review with you.

Is TwenteStack™ made from plastic or metal?

TwenteStack™ is produced exclusively as a metal conveyor belt, in full stainless steel. There is no plastic or hybrid version.

For which applications is TwenteStack™ suitable?

TwenteStack™ is suitable for self-stacking systems used in freezing, cooling and other food processing applications.

Which specifications are available?

TwenteStack™ is available in various belt widths, tier heights and mesh types. Standard belt widths are 420, 460, 510, 580, 600, 640, 660 and 760 mm. Tier heights are 60, 80, 100 and 120 mm. Mesh types include M9, M13 and other options on request. Wire diameter is 1.6 mm.

Can TwenteStack™ be customised?

Yes. TwenteStack™ is configured on belt width, tier height, mesh type, wire diameter and material specification. Other configurations are available on request.

What information does Twentebelt need for a replacement request?

To determine the right configuration, share your current belt width, tier height, mesh type, wire diameter, material, system type, product type, operating temperature, belt condition and the replacement scope you need.