TORQUE LIMITERS In this issue: • What are torque limiters • How to specify them • Calculating your torque • Which applications are best HOUJDOn Execellence in TORQUE LIMITER Engineering (since I977 www.howdon.co.uk [email protected]

Welcome to our guide. Howdon Power Transmission has been involved in the design and manufacture of torque limiters for over 40 years. We invented the revolutionary Wedgegard Shearpin Torque Limiter in 1977 to address demand for a simple solution to torque overload protection. Today we continue to build on the success of the Wedgegard Shearpin Torque Limiter, developing robust, dependable torque limiters to avoid the mechanical drive overload problems that can occur under the increasing demands of the modern processing plant. The basics What is a Torque Limiter? A torque limiter is a device that...

How do you choose the right torque limiter for your application? Torque limiters, also known as overload clutches, provide machine protection and reduce down time after overload conditions. Howdon make a wide range of torque limiters that provide faster response times and better protection than typical automatic electronic methods, allowing machine and drives to coast to a stop without causing further machine damage. Finding the answers to these questions will help you choose the right torque limiter: 1. At what torque level do I want the overload clutch to disengage? The torque could be determined...

Applications include: Steel Production Industrial conveying Food Production Waste Water Agricultural machines

Type DIN Spacer Universal Joint Shaft Couplings • Fits standard DIN UJ (Universal Joint) companion flanges. Release torque is adjustable by Wedgepin ratings. • The maximum release torque is based on maximum Wedgepin capacity and not UJ shaft capacity- Check your UJ shaft manufacturers max load rating. • Adaptor Flange maybe required when fitting to PTO Gear Box Flange. • Spigot diameters may change on higher rated UJ shafts. • Sizes 150 and above are supplied with face keyways. • When selecting high overloads always limit the release torque to 90% of UJ shaft manufacturers full load rating. •...

Type CFS Coupling • Type CFS Wedgegard couplings combine a Centaflex half coupling with the Wedgegard torque limiter. • Units can be supplied bored and keywayed to customer requirements. • Standard Units for release torques up to 64,000 Nm. Torque is adjustable by Wedgepin ratings. • CFS Couplings are designed for safe operation in a wide range of high torque applications. • Compensates for axial, radial and angular misalignment, offering heavy duty performance and compact dimensioning. • Standard finish - Natural. All measurements in mm Torque range from 45Nm to 64000Nm depending on wedgepins...

Type DFS Coupling • Type DFS Wedgegard Couplings can be supplied bored and keywayed to customer requirements. • Standard Units for release torques up to 122,000 Nm. Torque is adjustable by Wedgepin ratings. • Urethane 95 shore hardness close fitting buffers. • DFS Couplings are usually applied on equipment when misalignment does not exceed 3.1/2 degree. • Standard finish - Natural. Torque range from 45Nm to 122000Nm depending on wedgepins and coupling size Call or email for more information. Gear Type Couplings • Gear Type Wedgegard Couplings can be supplied bored and keyed to customer requirements. •...

Chain Couplings • Chain Type Wedgegard Couplings can be supplied bored and keywayed to customer requirements. • Standard Units for release torques up to 64,000 Nm. Torque is adjustable by Wedgepin ratings. • Designs to suit special drive requirements are available. Standard finish of Xylan coating on Wedgegard unit. www.howdon.co.uk [email protected] Howdon Power Transmission Ltd Paganhill Lane, Cainscross, Stroud, Glos, GL5 4JT England.