Vibrowest WESTON Circular Vibrating Screens - Technical and Detailed Product Description
Vibrowest WESTON series circular vibrating screens are professional separation machines developed for control screening, safety screening, and particle size separation in industrial processes. Manufactured for more than 50 years, this series has proven its reliability in the field and stands out for its stable and consistent performance, even when processing difficult-flowing, high-viscosity, or agglomeration-prone materials. WESTON screens are regarded as one of the most classic and robust solutions of Vibrowest engineering.
The WESTON series operates as a control screener based on circular and rotary vibration principles and is suitable for the safe screening of both dry and semi-moist products. It is widely used in production lines to improve product safety, remove foreign bodies, and separate unwanted oversized particles.
General Design and Mechanical Structure
WESTON vibrating screens are built on a heavy-duty, long-life mechanical structure. The housing and product-contact parts can be manufactured using different materials depending on process requirements:
• AISI 304 stainless steel
• AISI 316 / 316L stainless steel
• Carbon steel (painted or with special coatings)
Thanks to the circular body design and centrally driven configuration, vibration is distributed uniformly across the entire screening surface. This ensures full utilization of the screen mesh and improves separation efficiency. The machine is supported by elastic suspension elements, minimizing the transmission of vibration to the floor and surrounding equipment.
Operating Principle - Rotary and Circular Vibration
The most distinctive feature of the WESTON series is its ability to generate high-speed rotary vibration. With a specially designed drive system, motor speed can reach up to 3000 g per minute. This strong and controlled vibration characteristic provides a major advantage, especially for products that are difficult to screen with conventional vibrating screens.
Material is fed onto the screen surface from the top or side. Under the effect of circular and rotary vibration, the product moves in a controlled manner across the screen:
• Fine fraction passes through the screen openings and is discharged from the lower outlet
• Oversized particles or foreign bodies remain on the screen and are removed through a separate discharge
Thanks to this principle, WESTON screens can function both as safety screens and as precise control screens.
Technical Performance and Separation Capability
The WESTON series is specifically designed for problematic and difficult materials, such as:
• High-viscosity products
• Moist or sticky powders
• Fibrous or irregularly shaped particles
• Lumpy and agglomerated materials
The powerful vibration prevents screen blinding and maintains a continuously open screening area. As a result, blockages, capacity losses, and frequent cleaning requirements in the production line are significantly reduced.
Model Options and Sizes
The WESTON series is available in several model options to meet different capacity and process requirements:
• WESTON 503
• WESTON 605
In addition, the ROTOWEST model, based on the same operating principle, is offered as an alternative for compact applications (Ø 600 mm class).
Model selection is determined by product throughput, particle size, screen diameter, required separation accuracy, and plant layout.
Certifications and Industrial Standards
WESTON vibrating screens can be manufactured in compliance with the following standards and certifications upon request:
• ATEX, for use in potentially explosive atmospheres
• FDA-compliant manufacturing and documentation
• IQ / OQ procedures
• GMP-oriented surface finishes
These features make the WESTON series particularly suitable for applications in the food, pharmaceutical, and chemical industries.
Application Areas
WESTON circular vibrating screens are preferred across a wide range of industrial sectors:
• Food industry - flour, sugar, cocoa, spices, and additive powders
• Pharmaceutical industry - control screening of active ingredients and excipients
• Chemical industry - pigments, resins, and additives
• Plastics and masterbatch - safety screening of granules and powder raw materials
• Recycling - classification of ground and granulated materials
Key Advantages
• Proven design based on more than 50 years of field experience
• High screening efficiency even with difficult and problematic materials
• Powerful rotary vibration reaching up to 3000 g per minute
• Robust and long-lasting mechanical construction
• Easy cleaning and maintenance
• Wide range of certification and hygienic options
In conclusion, Vibrowest WESTON series circular vibrating screens represent a benchmark solution for industrial plants that require high durability, stable performance, and long service life, particularly in control screening and safety screening applications. Their ability to operate continuously, even with difficult materials, significantly enhances production reliability and product quality.
