The Centa Transmissions Guide to Torsionally Soft Couplings by Nigel Smith

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1 The Centa Transmissions Guide to Torsionally Soft Couplings by Nigel Smith The easy way to quiet, vibration-free drives Centa Transmissions manufactures a wide range of flexible couplings to combat vibration and noise caused by misaligned drives. This paper provides more information about Centa s torsionally soft couplings for mechanical power transmissions. CENTAFLEX-A Series The CENTAFLEX-A Series is the most versatile shaft-to-shaft, torsionally soft flexible coupling on the market. Torsionally soft couplings have the ability to twist to give an excellent misalignment correction capacity that s far greater than other dual type couplings. The twist also gives significant damping under transient load conditions. The key problem resulting from any type of misaligned drive is lack of movement within the engine and the driven unit connection, which causes excessive vibration, noise and premature wear. The specification of the correct torsionally soft Centa coupling will give you a quiet and vibrationfree transmission.

2 The strength of the CENTAFLEX-A Series (CF-A) is its versatility. With a single compressed rubber element, it is easily adaptable to a variety of different applications. Also, the CF-A is ATEX Approved, making it safe to use in volatile situations or potentially explosive atmospheres. It is ideal for all types of electric and diesel drives with high performance variable high-speed range capabilities, making it perfect for all types of front PTO drives and its simple yet robust configuration allows for easy insitu replacement, overcoming all types of misalignment problems The big benefit of the CF-A is its versatility and three-way misalignment capacity. It also provides damping in the drive system, if required, and eliminates all vibration and noise caused by poorly misaligned engine drives. As the CF-A is a very strong, single piece compressed rubber element, it can be bolted directly to the hub and is compatible with any shape of shaft. It can also be fitted to a shaft drive to create a cardanic joint (CENTA CF-AG-Shaft). And once fitted, it is maintenance free.

3 What makes the CENTAFLEX-A Series unique is its easy adaptability. The drive and driven parts of the power transmission can be of any shape and the breadth of the CF-A range, coupled with Centa s design expertise, means that any size of drive can be accommodated. Compatibility CENTAFLEX-A Series is compatible with any kind of electric or diesel engine and typical applications include plant and industrial equipment, generator sets, compressors, pumps, hydraulic drive and marine drives. Other torsionally soft Centa couplings include the CENTAMAX, which is developed especially for drives subject to torsional vibration and the extensive CENTAX range. Other Centa Flexible Couplings The Centa range comprises over 20 different flexible couplings to handle the full range of applications found in modern power transmissions, including industrial, marine, renewable power generation and oil & gas exploration, with torques up to 1,000,000Nm. The range includes: CENTAFLEX-B Series A compact, light and highly robust flexible shaft coupling with a high tensile, unbreakable steel hub.

4 CENTAFLEX-C Series A robust coupling for diesel engine hydraulic drives, This has a high power density with some torsional elasticity and damping capacity to suit all types of applications. CENTAFLEX-KE Series An innovative flexible coupling that s specially designed to overcome drive misalignment in all types of construction plant and equipment. CENTAFLEX-X Series A variation on Centa s versatile CF-A and CF-H couplings, CENTAFLEX-X has a high power density and is designed for operation in extreme conditions, withstanding temperatures up to 150 C. This is torsionally stiff, and ideal for positional drives. It is maintenance free.

5 Centa Transmissions Limited Tel: Centa Transmissions Limited celebrates 35 years of trading in To mark this major milestone, Centa has recently opened a 400m² extension to its factory at Shipley, West Yorkshire. This new half-million pound development has enabled Centa to restructure the entire production and warehousing facilities within the factory to maximise output and efficiency. Nigel Smith is the Sales Manager for Centa Transmissions Limited and is Chair of the BMF EE (British Marine Federation Engines & Equipment Association). Date: 14 th JULY 2014