Omme Gears srl is the only gearbox manufacturer capable of offering the centrifugal separator market three distinct technologies: cycloidal, epicyclic, and hybrid. This allows us to provide tailored solutions to meet any requirement. This diversified range enables us to deliver solutions for centrifugal separation applications across various sectors, from small laboratories to large industrial plants.
Why Choose Omme Gears Srl as Gearbox Manufacturer?
With twenty years of experience in the centrifugal separation market, Omme Gears Srl is a trusted gearbox manufacturer that works closely with clients from the initial design phase to final implementation. This ensures that every gearbox we produce meets the specific requirements of the application.
The technical department translates complex process requirements into robust mechanical solutions, delivering high efficiency and long-lasting durability. We are often asked to address needs for performance enhancement or extended service life, providing plug-and-play solutions.
For industries with strict health and safety standards, such as the pharmaceutical or food sectors, Omme Gears Srl assists clients in selecting the most suitable materials, ensuring compliance without compromising performance.
All three decanter gearbox technologies offered by Omme Gears Srl are ATEX certified (Group 2) and can be manufactured in stainless steel AISI304 – AISI316. Below, we delve into the three types of decanter gearboxes provided by this exceptional gearbox manufacturer.
Cycloidal Gearboxes
Cycloidal gearbox technology offers high reduction ratios (up to 1:87) in a compact design. This type of decanter gearbox is ideal for a wide range of centrifuges, from laboratory use to industrial applications, and supports both fixed and adjustable differential speeds with single- or dual-motor configurations. Additionally, the DIN5480 output ensures efficient torque transmission and can be directly integrated into the centrifuge.
Technical Specifications:
| Construction Sizes: 12 | Output Torque: Up to 46500 Nm | Dynamic Balance: G6.3 or G2.5 in accordance with ISO 1940 |
| Execution for fitting: Flanged with male and female centring | Reduction Ratios: From 15:1 to 87:1 | Lubrication: Oil or grease, depending on the gearbox size. |
| Direction of rotation between Input and Output: Discordant | Noise Level: Low noise level thanks to transmission by rolling friction | |
| Input cylinder shaft: With key | Output connection: Hub with male or female spline according to DIN5480 | Seals resistant to extreme temperatures: Achieved through the use of materials such as FKM or PTFE. |
Additional Advantages:
- High torque-to-size ratio
- Compact design ensuring balanced rotating masses and reduced vibrations
- Wear-free operation even at low differential speeds
Discover more about cycloidal decanter gearboxes by clicking here!
Planetary Gearboxes
Planetary decanter gearboxes are designed with two or three reduction stages, available in 11 sizes with torques ranging from 2.5 kNm to 120 kNm and reduction ratios from 1:20 to 1:224. They are ideal for separators where the screw rotates slower than the drum and high torque at high differential speeds is required. These gearboxes support both constant and adjustable differential speeds with single- or dual-motor configurations.
Technical Specifications:
| Construction Sizes: 11 | Output Torque: Up to 120000 Nm | Dynamic Balance: G6.3 or G2.5 in accordance with ISO 1940 |
| Execution for fitting: Flanged with female centring | Reduction Ratios: Double reduction stage up to a ratio of 1:100; three planetary stages from 1:100 to 1:224 | Lubrication: Oil lubrication with a closed system, expansion tank, or hydraulic control unit |
| Direction of rotation between Input and Output: Concordant | Noise Level: Reduced noise level thanks to rolling friction transmission and bearings selected according to ISO 281 | High-pressure resistant seals: Achieved through design features that ensure resistance up to 10 bar |
| Input cylinder shaft: With key | Output connection: Hub with female spline according to DIN5480 |
Additional Advantages:
- Transmission ratios from 1:20 to 1:224
- High transmissible torques thanks to gears designed according to ISO 6336
Discover more about epicyclic decanter gearboxes by clicking here!
Cycloidal Gearboxes with Planetary Stage
This series of decanter gearboxes is a hybrid technology as it combines a cycloidal stage with a planetary stage, offering high reduction ratios (up to 1:348). The configuration provides flexibility for decanter centrifuges with screw speeds that are either slower or faster than the drum speed.
The ON and OV models support both constant and adjustable differential speeds, while the OR model allows independent adjustment of the screw speed relative to the drum speed, reducing energy consumption by allowing the installation of smaller motors.
Technical Specifications:
| Construction Sizes: 12 | Output Torque: Up to 46500 Nm | Dynamic Balance: G6.3 or G2.5 in accordance with ISO 1940 |
| Execution for fitting: Flanged with male and female centring | Reduction Ratios: Double reduction stage; from 45:1 to 348:1 | Lubrication: Oil lubrication with closed system, expansion tank or external hydraulic control unit |
| Direction of rotation between Input and Output: Concordant/Discordant | Noise Level: Low noise level thanks to transmission by rolling friction | High-pressure resistant seals: Achieved through design features that ensure resistance up to 10 bar |
| Input cylinder shaft: With key | Output connection: Hub with male or female spline according to DIN5480 | Seals resistant to extreme temperatures: Achieved through the use of materials such as FKM or PTFE |
Additional Advantages:
- Higher reduction ratios compared to cycloidal gearboxes
- Ability to drive the decanter centrifuge with a screw speed slower or faster than the drum
- For OR series gearboxes: Fourth fixed rotation shaft, achieved by using a reaction arm and load cell for continuous torque monitoring, with the option for safe shutdowns in case of anomalies
- Independent screw rotation management, separate from drum rotation speed
- High efficiency and low operating temperature
Discover more about hybrid technology decanter gearboxes by clicking here!
Which Decanter Gearboxes Are the Best for Your Application?
The answer is: it depends on the application.
For example, for applications that require high torques at high differential speeds, or for configurations where the screw rotates slower than the drum, the planetary gearbox is the ideal choice, even though it is bulkier and heavier compared to the cycloidal gearbox. On the other hand, for applications that require moderate torques and low differential speeds (up to a maximum of 15 rpm) or for installations where the screw rotates faster than the drum, the cycloidal gearbox is the best solution, also due to its smaller size and lighter weight (read also “Planetary vs cycloidal comparison: who would win?“). The hybrid gearbox, however, offers greater flexibility and efficiency for a wide range of operational needs.
As a leading gearbox manufacturer, Omme Gears Srl ensures each gearbox is designed to provide the optimal solution for specific requirements. With our experience, we supply gearboxes that maximize performance and meet the requirements of various sectors in centrifugal separation: food, industrial, olive oil, wastewater treatment, drilling mud treatment, etc.
Omme Gears Srl: your gearbox manufacturer of choice! Contact us today to find the perfect decanter gearbox for your application and optimize your systems with a customized solution!