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RENOLD
Roll-Ring

Roll-Ring

Product catalog summary

Introduction
Renold is a prominent provider of power transmission products, known for delivering innovative and cost-effective solutions with a strong emphasis on quality and reliability. With over 130 years of experience, Renold ensures consistent performance across various global industries.

Product Overview
The Roll-Ring is an innovative chain tensioner crafted from a specially formulated polymer. It is designed for easy integration into chain drives, offering tension and damping without the need for additional components such as sprockets or bolts. The Roll-Ring is maintenance-free, self-lubricating, and suitable for dusty and dirty environments.

Key Features

Requires minimal technical effort for installation.
Automatically positions and self-lubricates.
Effective in both vertical and diagonal drives.
Reduces noise by functioning as both a tensioner and damper.
Operates in reverse mode and is suitable for various environmental conditions.

Applications
Roll-Ring chain tensioners are utilized in diverse fields such as printing machines, confectionery production lines, airport luggage conveyors, brewery systems, and agricultural machinery. They are also applicable in motorcycle chains and other mechanical engineering applications.

Installation Guidelines
Roll-Ring tensioners require a working gap smaller than the reference diameter of the tensioner and adequate space between chain drive sprockets. Specific installation configurations are recommended for duplex and triplex chains to ensure optimal performance.

Selection Process
To select the appropriate Roll-Ring for an ISO or ANSI series chain drive, users should identify the chain's ISO or ANSI number, measure the inner width between sprockets, and the maximum width between chain strands. Tables A and B provide detailed specifications to assist in selecting the correct Roll-Ring model.

Technical Specifications
The document includes detailed tables listing the dimensions, maximum static force, maximum chain speed, and ambient temperature range for various Roll-Ring models, ensuring users can select the right product for their specific needs.

Conclusion
Renold's Roll-Ring chain tensioners offer a reliable, maintenance-free solution for chain tensioning needs across a wide range of industries, providing ease of installation and operation in challenging environments.

Specifications
The document lists technical specifications for various components, including dimensions, weight, and operational temperature ranges. Key parameters include dimensions (e.g., 3/4 x 1/2, 1 x 5/8), weight (e.g., 7.530, 12.470), and temperature range (-22 to +122 degrees).

Procedures and Recommendations
The document suggests that the components are universal for chain widths of 1/8” to 5/16”. It also notes that the specifications are measured at 20°C and maximum tensioning deformation, without dynamic tensioning force proportional to the chain speed.

Norms and Standards
The document includes a disclaimer that all information is subject to change and that no responsibility is accepted for printing errors. It emphasizes that the information is accurate as of the publication date in 2011.

Additional Information
For further details or to contact the local sales team, the document directs readers to visit www.renold.com. It also provides a QR code for easy access to more information.

Catalog excerpts

Self adjusting chain tensioner Superior Chain Technology

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Leading edge technology Package solutions Renold provides practical cost effective solutions, with a commitment of value through quality. This is achieved by continuous investment in people, process technology and manufacturing. One stop for your drive systems, including roller and conveyor chain, gears, motors, couplings, variators and fabricated bases. Consistent reliability Renold's 130 years of experience in the design and manufacture of power transmission products, to the highest specifications, with proven performance in diverse industries worldwide, underwrites the guaranteed quality and...

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Roll-Ring is an innovative chain tensioner made from a specially formulated polymer. The unique design is based upon a toothed ring that can be fitted to horizontal, vertical or diagonal drives in a matter of seconds, simply by placing it in-between the two strands of chain. When the drive is in use, the Roll-Ring deforms to an elliptical shape, due to the compression between the strands and completely absorbs any slack in the system. Roll-Ring performs the job of a tensioner and a damper in one, and is ideally suited to applications where maintenance is difficult or impossible. Vibrations in...

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Operating Environment The material mixture and manufacturing technology give Roll-Ring a high chemical resistance, flexibility in cold temperatures, stability in warm temperatures and stability against ultra-violet radiation. Roll-Ring chain tensioners are maintenance free and can be fitted to a wide variety of chain drives with no installation downtime. Roll-Rings ending with the code 01 are modified to the maximum permissible chain speed, wear period, chemical resistance and cold flexibility. They are therefore ideal for a wide spectrum of mechanical engineering. • There is a working gap between...

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Roll-Ring® Selection 4. Now check that D*= to A the correct product has been determined. If several types of Roll-Ring meet the criteria, select the one with the maximum number of teeth. Identify the ISO number of your chain e.g. 08B-1 For example if: Chain ISO number is 08B-1 D* = 85mm A* = 310mm Measure the inner width between sprockets in mm. This is dimension A* Measure the maximum width between the chain strands in mm by pulling the chain apart, starting and ending the measurement at the centre of the pins. This is dimension D* Then Roll-Ring 108 026 01 meets the criteria. If you wish to...

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BS data Technical details Article No. 01 Chain Dimension Chain Dimension Max Static Expansive Force Maximum Chain Speed Ambient Temperature Max Static Expansive Force Maximum Chain Speed Ambient Temperature Technical details Article No. 06 Chain Dimension Max Static Expansive Force Maximum Chain Speed Ambient Temperature Technical details Article No. 08 * universal for chain width of 1/8” to 5/16” ** at 20°C and maximum tensioning deformation; without dynamic tensioning force proportional to the chain speed

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ANSI data Technical details Article No. 01 Chain Dimension Maximum Chain Speed Ambient Temperature Max Static Expansive Force Chain Dimension Max Static Expansive Force Maximum Chain Speed Ambient Temperature Technical details Article No. 06 Chain Dimension Max Static Expansive Force Maximum Chain Speed Ambient Temperature Technical details Article No. 08 * universal for chain width of 1/8” to 5/16” ** at 20°C and maximum tensioning deformation; without dynamic tensioning force proportional to the chain speed

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For more information or to contact your local sales team go to Whilst all reasonable care is taken in compiling the information contained in this brochure, no responsibility is accepted for printing errors. All information contained in this brochure is subject to change after the date of publication. © Renold Power Transmission 2011. Ref: REN22 / ENG / 09.11 Want to find out more? Scan this QR code with your smartphone. No QR reader? Simply download one from your app store.

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