Editor's Choice

Easy couplings for extreme conditions

Second Quarter 2023 Editor's Choice Shaft power components

BMG’s Timken Quick-Flex couplings, which require minimal maintenance, are able to withstand extreme applications, including hydraulics, pumps, gearboxes, compressors, vibrator screens and fans. They are designed to transmit torque from a driving shaft to a driven shaft and to accommodate shaft misalignment within the drive. These maintenance-free couplings also dampen vibration and torque fluctuations and smooth torsional shock loads.

“An advantage of Quick-Flex drive couplings over conventional units is direct replacement with virtually all comparably sized couplings. Quick-Flex couplings require no lubrication, and are also easy to install and maintain,” says product manager, Brandon Bouillon. “Due to the high torque capacity of this range, the selected QF solution is often smaller than the replaced coupling. This leads to a major weight saving on the drive and also reduces stress on other components. These couplings are ideal for heavy start-ups of shock loads because they have an impact load capacity in excess of 200% of the maximum torque rating.”

Timken Quick-Flex couplings consist of two steel coupling hubs which are attached to the drive and driven shaft. A urethane element wraps around the two hubs and provides an effective drive mechanism. The only spare part required is a standby element that can be quickly changed when necessary. The cover, which secures the insert in place, can be installed on either side of a standard coupling hub and will not move under misalignment.

Once the two coupling hubs, insert and cover have been installed and aligned for the first time, the coupling hubs do not need to be moved again for the life of the equipment. Unlike a standard jaw-type or gear coupling, there is no metal-to-metal contact between the hubs. This prevents any possible damage to the ironware during an element failure. The urethane insert can be easily changed without moving the hubs or shafts, and no re-alignment of components is necessary.

Inserts, which are resistant to chemicals, are manufactured from different grades of urethane to suit various industries. The red insert is made from relatively soft urethane, and is suitable for most high-speed applications with high levels of vibration. This insert is also designed for quick starting and stopping of high inertial loads and for reversing applications.

Quick-Flex couplings, with the stiffer blue insert for higher torque applications, can withstand operation in temperatures between -50 and 100˚C, and are an efficient replacement for gear, disk or grid style couplings.

White inserts are manufactured from a heat-resistant urethane compound for high torque, high-temperature applications, up to 177˚C. Couplings with the black insert can withstand extremely high torque requirements, replacing gear style couplings.

Quick-Flex couplings are compatible with shaft sizes from 10 to 286 mm and can accommodate a wide speed range – from below 100 rpm, to 12 000 rpm. Torque ratings range from 43 to 188 795 Nm, depending on the selected element and cover design.

The flexibility of this design makes these couplings suitable for many applications − from high speed/low torque/excessive vibration drives to a low speed/high torque application. These couplings accept angular misalignment up to 2° and parallel shaft displacement up to 1 mm.

BMG has a team of mobile technicians with specialist technical skills and equipment to conduct breakdown and routine maintenance on site. This team carries out troubleshooting and advises on possible productivity improvements, to ensure the highest level of plant output and reliability.

Specialist services include installation, adjustment, replacement, and maintenance of components, shaft and pulley alignment, balancing, condition monitoring, oil sampling and analysis, and critical equipment inspections and lubrication schedules. Maintenance training and fault diagnosis also form an important part of BMG’s field services.

Through BMG’s assistance with careful and accurate product selection, correct installation and appropriate care of couplings, substantial savings can be made in reduced maintenance costs and minimal downtime.

For more information contact Brandon Bouillon, BMG, +27 11 620 8437, brandonb@bmgworld.net, www.bmgworld.net


Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

WEG partners with Panaco in the DRC
Zest WEG Group Africa Editor's Choice News & events
The strengthened presence of WEG in the Democratic Republic of Congo (DRC), through its strategic alliance with ts value-added reseller (VAR) Panaco, has proved to be highly successful.

Execution of the massive Azmet Reactor project DRC
Editor's Choice News & events
The Azmet Reactor project, a collaborative effort led by Viva Engineering, involved fabricating six massive reactors that were over three stories high in Gauteng, and then transporting these more than 2500 kilometres to a mine in the DRC - where all 3265 parts fitted perfectly, with not even one of the 26 900 bolts out of place. This was a massive achievement.

The time is now to implement a motor management strategy
Schneider Electric South Africa Editor's Choice Electrical switching & drive systems & components
Motor management plays an all-important role in controlling motor energy costs in various industries, segments and applications. Research and practical experience have consistently shown that effective motor management practices can result in significant energy savings, reduced operational costs, and improved overall system reliability.

SKF’s successful raid action in Cape Town
SKF South Africa Editor's Choice Shaft power components
Authorities, with collaborative support from SKF, recently conducted a large and highly effective raid on a very well-known bearing seller of SKF bearings in Cape Town.

Case study on automotive quality control
Motion Tronic Editor's Choice
Motion Tronic selected high-performance PLCs and HMIs from Inovance Technology to engineer a smart catalytic converter quality control solution for the exhaust facility at Toyota South Africa Motors.

PC-based motion control on a labelling machine
Beckhoff Automation Editor's Choice Electrical switching & drive systems & components
For 50 years, Bausch+Ströbel in Germany has been developing packaging and production systems for the pharmaceutical industries. The company’s goal is to offer the best technical and economical solutions for the challenges of modern industry. Its new ESA1025 labelling machine shows how this is achieved with PC-based control from Beckhoff as the central motion controller.

Thrust for hybrid electric flying
Editor's Choice Electrical switching & drive systems & components
Several leading academic institutes in Germany are collaborating on the future of hybrid electric flying. The partners are researching an entirely new propulsion system for medium-range aircraft with up to 35 passengers.

Tough couplings for tough industries
Bearing Man Group T/A BMG Editor's Choice
BMG’s extensive range of power transmission components encompasses robust products from Regal Rexnord, a leading manufacturer of critical system components that perform efficiently under rigorous demands in diverse applications.

Hydraulic connectors with residual pressure
Editor's Choice Hydraulic systems & components
Hydraulic connections are vital in both outdoor and indoor industrial machinery. However, the hydraulics lines frequently require connecting and disconnecting for maintenance or changeover. The goal is to enable quick, easy swaps to enhance machine flexibility and productivity.

Inovance brings advanced motion control to South Africa
Motion Tronic Editor's Choice
Inovance and its South African distributor, Motion Tronic are launching the Easy Series PLC in this country, bringing its flexible, high-performance motion control solution to customers across South Africa in a wide range of industry sectors.