Tensioner Devices & Motor Bases

Reliable Automatic Tensioning for Industrial Drive Systems

Efficient power transmission depends on maintaining the correct belt and chain tension throughout the life of the drive system. These Tensioner Devices and Motor Bases are designed to automatically maintain optimum tension, eliminating frequent manual adjustments while improving the reliability and efficiency of industrial machinery.

Built on ROSTA's patented rubber torsion technology, these maintenance-free solutions combine spring action, damping, and pivoting into a single compact element. They automatically compensate for belt elongation, chain wear, and load variations, helping reduce vibration, prevent slippage, and extend the service life of drive components.

Key Features

• Maintenance-free operation with no lubrication required
• Patented rubber torsion technology
• Automatic compensation for belt stretch and chain wear
• Reduces belt slippage, vibration, and shock loads
• Improves power transmission efficiency
• Extends the service life of belts, chains, bearings, and pulleys
• Simple installation and easy integration into new or existing machinery
• Long-lasting performance in demanding industrial environments

Tensioner Devices

Tensioner Devices are designed to provide automatic and continuous tensioning for belt and chain drives. Their elastic torsion spring mechanism maintains consistent tension while absorbing dynamic loads and vibration, resulting in smoother operation, lower maintenance, and improved drive reliability.

Available Types

• SE Series – Standard tensioning elements for general-purpose belt and chain drive applications.
• SE-G Series – Oil-resistant models designed for applications exposed to lubricants, grease, and oily environments.
• SE-W Series – Heat-resistant versions for elevated operating temperatures.
• SE-I Series – Stainless steel models for corrosive, hygienic, and washdown environments such as food, beverage, pharmaceutical, and chemical industries.
• SE-B (Boomerang®) Series – Designed for long centre-distance belt and chain drives requiring increased tension compensation.
• SE-R Series – Reinforced tensioning elements for heavy-duty applications subjected to high shock loads and continuous vibration.

Clamping Elements & Accessories

ROSTA offers a comprehensive range of clamping elements and accessories that complement its Tensioner Devices, enabling flexible installation and optimized drive performance across various industrial applications.

The range includes:

• Clamping elements for secure and reliable mounting
• Tensioning rollers for flat, V-belt, and timing belt drives
• Sprockets for chain drive applications
• Chain guides and chain sliders for smooth chain operation
• Mounting brackets and angle supports for simplified installation
• Pre-tensioning devices that help achieve the correct initial belt or chain tension

These accessories allow users to configure complete maintenance-free tensioning systems tailored to different machine layouts and operating conditions. 

Motor Bases

Motor Bases are self-adjusting motor mounting systems that automatically maintain proper belt tension by allowing the motor to pivot on maintenance-free rubber suspension elements. They continuously compensate for belt elongation and load variations, helping improve drive efficiency while reducing maintenance and downtime.

Available Types

• MB 27 – Compact motor base for small belt-driven applications.
• MB 38 – Medium-duty motor base for small and medium industrial drives.
• MB 50 – Standard motor base for medium-power industrial applications.
• MB 55 – Enhanced design with simplified pre-tension adjustment and flexible motor plate positioning.
• MB 70 – Heavy-duty motor base for larger industrial drive systems.
• MB 75 – Improved heavy-duty model featuring centered pre-tensioning and simplified installation.
• MB 100 – High-capacity motor base for large motors and demanding industrial applications.

Typical Applications

ROSTA Tensioner Devices and Motor Bases are widely used in:

• Conveyor systems
• Belt and chain drives
• Material handling equipment
• Mining and quarrying
• Recycling machinery
• Packaging equipment
• Food and beverage processing
• Agricultural machinery
• Industrial fans and blowers
• Compressors
• Pumps
• Manufacturing and process industries

Automatic tensioning solutions help maintain consistent drive performance while reducing maintenance requirements and extending component life. By minimizing belt slippage, chain wear, vibration, and shock loads, they improve machine reliability, reduce downtime, and lower the overall cost of ownership.

BIBUS India offers the complete range of ROSTA Tensioner Devices, Clamping Elements & Accessories, and Motor Bases to meet diverse industrial power transmission requirements. Our team works closely with customers to recommend the right solution based on drive configuration, operating conditions, environmental requirements, and application needs, ensuring reliable, maintenance-free performance and long-term operational efficiency.