TZSPN Cyclo Gearboxes for Centrifuges With Trailing Scroll

August 01, 2025News

Transcyko TZSPN cyclo gearboxes for centrifuges with trailing scroll offer compact, high torque, reliable options for new and upgraded decanter centrifuge applications. Cross compatibility with Sumitomo drives and service parts enables rapid, cost-effective drop-in replacement to upgrade or repair a very wide range of centrifuges with trailing scrolls.

What are the essential features of centrifuges with trailing scroll?

Decanter centrifuges with trailing scroll are designed for industrial applications that demand continuous operation, and must be able to handle a constant feed of slurry containing solids and liquids. Continuous, reliable, operation is an essential design feature for all centrifuges with trailing scroll, which must be engineered to avoid maintenance problems caused by overloads or blockages stalling the centrifuge.

How do centrifuges with trailing scroll work?

You may come across centrifuges with a trailing scroll by the terms decanter centrifuge and screen scroll centrifuge, but they are all fundamentally the same type of centrifuge by different names. Decanter centrifuges rely on the differential speed between a screw conveyor that closely fits to the inside of a drum, which rotates at a different speed. In a trailing scroll decanter centrifuge, the scroll rotates at a slower speed than the bowl within which it is turning.

The centrifuge bowl rotates at high speed, which moves the heavier components in the slurry mixture towards the inner wall of the bowl, separating solids from the liquid slurry. The function of the rotating scroll is to push these solids towards the discharge point of the centrifuge. Adjusting the differential speed between the scroll and the decanter bowl affects the density and speed of separation of the slurry components.

A high efficiency centrifuge with trailing scroll must be able to separate different particle sizes and maintain consistent outputs even if the input density varies, this is done by changing the differential speed ratio between the scroll and the decanter bowl. Failure to achieve consistent, smooth operation even under heavy or variable loads has a serious impact on the quality of filtering as well as making the centrifuge prone to blockage and failure.

Why are cyclo gearboxes used in centrifuges with a trailing scroll?

To understand the reasons that cyclo gearboxes dominate the market for trailing scroll centrifuges, we need to look at the functional uses of centrifuges of this type and consider how cyclo gearboxes are the logical best choice to ensure consistent, reliable, operation.

What are the typical features of Transcyko cyclo gearboxes?

High single-stage reduction ratios from 6:1 to 87:1
Extreme shock loading resistance to 500% of rating
High sustained output torque capabilities of 30-40,000Nm
Strong, reliable, low noise, low wear, low maintenance designs
In house design for custom configurations and ratios

Cyclo gearboxes are resistant to high intermittent loading

All centrifuges operate at high speeds, but centrifuges with a trailing scroll are used for the processing of continuous feeds which may have varying densities, with potential to significantly change the torque loading on the gearbox. Cyclo gearboxes are extremely resistant to this type of intermittent loading, with shock resistance up to 500% of working load.

A centrifuge with a trailing scroll is designed for continuous separation of solids and liquids out of a slurry mixture using a rotating screw conveyor, called a scroll, which turns within a rotating bowl at a differential speed. This can generate very high, variable loads, especially when the feed slurry is not uniform. The capabilities of cyclo gearboxes to handle variable loads and shock are the primary reasons that cycloidal gears are used for centrifuges.

What are 5 industries that routinely use centrifuges with trailing scroll?

Waste water treatment, especially sludge dewatering
Food processing
Chemical separation
Mining and mineral separation
Pharmaceutical processing

Why are Transcyko cyclo gearboxes a cost effective solution for centrifuges with trailing scroll?

There are three good cost based reasons for choosing Transcyko cyclo gearboxes for centrifuges, this applies to our entire range including our TZSPN series for centrifuges with trailing scroll. Our success in the centrifuge industry can be attributed to the low wear, low maintenance, highly versatile nature of our high quality cycloidal gearbox engineering.

1. Transcyko cyclo gearboxes for centrifuges have reduced wear

Cyclo gearboxes operate constantly in compression and not in shear, sharing the load across a large surface area, increasing resistance to shock loadings and reducing wear from high torque and variable loads compared to inline gearboxes.

2. Cycloidal gearboxes have lower maintenance overheads

An additional maintenance bonus of cycloidal gearboxes is that the larger, outer, cycloidal gears wear very slowly compared to the central eccentric shaft, which is easily and inexpensively refurbished. This is because cycloidal gearing is epicyclic, with gears rotating around each other inside the casing to achieve speed reduction.

3. Cyclo gearboxes are ideal for low vibration centrifuge installations

Epicyclic cycloidal gearboxes are very compact by design, and Transcyko TSZPN cyclo gearboxes are engineered with a short, robust, design that is well suited for centrifuges, with minimal vibration even at high speeds and multiple, simple, options for mounting in different orientations.

What are the cyclo gearbox options for centrifuges?

Transcyko cyclo drives and gearboxes are globally recognized for more than thirty years of high quality engineering excellence. This is why, in 2025, Transcyko is a leading global supplier of high quality cyclo gearbox options and cycloidal speed reducers for centrifuges across a wide range of industrial and commercial applications.

Chemical industry compound separation
Beverage manufacturing & sediment removal
Food oil refining, olive oil manufacturing
Dairy product manufacturing
Food & nutritional supplement manufacturing
Oil & gas industry fraction separation
Pharmaceutical compound separation & refining
Biological & industrial waste water treatment
Mining, mineral extraction & mineral refining

For high quality cyclo gearboxes for centrifuges with trailing scroll, you can choose between Transcyko, Sumitomo ZSPN, and other decanter centrifuge options for new installations, renewal or upgrades. However, as a specialist manufacturer with extensive experience in design and manufacturing of cyclo products Transcyko delivers high quality at realistic prices.

Transcyko ZSPN Cyclo Gearboxes Give You More Choice

We have more than thirty years of experience in satisfying customer demands for efficient, effective solutions that match any centrifuge gearbox needs. For this reason, our TZSPN cyclo gearboxes for centrifuges with trailing scroll are designed for maximum drop-in compatibility with the other leading cycloidal gearbox and centrifuge brands without the added expense of modification or retooling.

What are 4 industrial uses of TSZPN cyclo gearbox decanter centrifuges?

Dewatering in wastewater treatment and mining industries.
Clarification in food and beverage processing.
Separation of different liquids and solids in oil and gas refining.
Classification of solids into different sizes of output particles.

Transcyko ZSPN cyclo gearboxes for centrifuges with trailing scroll have form factors, mountings and technical specifications that are built for optimum interoperability and backwards compatibility with cycloidal gearboxes manufactured by Sumitomo. This compatibility includes component parts for maintenance and servicing.

With Transycko you get to choose the upgrade and maintenance pathway for your centrifuge installations without being tied down to a specific manufacturer and the potentially higher cost and lower after sales and service standards that are all too common. Even supply chain disruption can be eliminated with Transcyko, based at the hub of global logistics in Taiwan. Contact us to discuss your centrifuge gearbox needs and discover how we can help you.