Wednesday 23rd May 2012

Are you connecting a motor to a pump ?

Consider the Sure-Flex® flexible shaft coupling range available from Abssac, which was designed specifically with that industry in mind. With large stocks kept, we offer an excellent solution to your pump coupling requirements.

The easy to fit Sure-Flex® elastomeric shaft couplings rely on a proven element produced from a elastic polymer, to absorb the shaft misalignments but also transmit torque whilst simultaneously dealing with shock and vibration.  Sure-Flex®  shaft couplings can be installed quickly and easily because there are no bolts, gaskets, covers or seals. Alignment can be checked with a straight edge placed across the outside of the precision machined flanges. No special tools are needed for installation, alignment or removal.

No lubrication, trouble free operation….

Mr. Phil Jones, from Abssac says“ The teeth of the sleeve lock into the teeth of the flanges without clamps or screws, tightening under torque to provide smooth transmission of power. Since there is no rubbing action of metal against rubber to cause wear, the couplings are not affected by abrasives, dirt or moisture. This eliminates the need for lubrication or maintenance, whilst providing clean dependable, quiet performance.”

The four way flexing action….

The 4-way flexing action absorbs virtually all types of shock, misalignment and end float. With Sure-Flex couplings, the need for lubrication and maintenance is also eliminated. As a result, the couplings provide clean, dependable and quiet performance for a variety of applications.

Flexing action #1 -TORSIONAL Flexibility !
Sure-Flex coupling sleeves have an exceptional ability to absorb torsional shock and dampen torsional vibrations. The EPDM and Neoprene sleeves wind-up approximately 15° torsionally at their rated torque. Hytrel sleeves will wind-up about 7°.

Flexing action #2 - ANGULAR  Flexibility !
The unique design of the Sure-Flex coupling's teeth allows for the absorption of angular misalignment without wear. These limits allow for the alignment of the coupling using only a scale and calipers.

Flexing action #3 - PARALLEL Flexibility !
Parallel misalignment is absorbed without wear or appreciable energy losses. The lateral flexibility of the coupling sleeve minimises radial bearing loads normally associated with parallel misalignment. This feature also allows for easier installation by the use of components bored for slip fits without fretting corrosion occurring at the shaft. Only a straight-edge and feeler Gage are required to obtain these limits.

Flexing action #4 - AXIAL Flexibility !
Sure-Flex couplings may be used in applications where there are limited axial shaft movements. The axial compressibility of the EPDM and Neoprene sleeves allows for shaft end-float without the absolute transfer of thrust loads.
Abssac stocks the full range of Sure-Flex® couplings including the full range of rubber (EPDM), neoprene, or Hytrel sleeves. Sleeves are available in four materials or compounds and various shape configurations to suit a multitude of applications..
Petrochemical Industry Sleeves

ABSSAC supplies a complete range of Hytrel® sleeves to compliment its range of Sure-Flex durable pump shaft couplings, from sizes No 6 up to No 14. Available in split design for ease of maintenance or in a solid format, all the sleeve sizes compliment the existing flanges in the Sure-Flex range.

Hytrel® is thermoplastic polyester elastomer, which is ideal for flex fatigue and broad use temperature (+250F/-65F). Most importantly the sleeves are then strongly resistant to tearing, flex-cut growth, creep and abrasion, making them ideal for arduous shaft coupling sleeve use. However, its main advantage apart from its mechanical advantage is that its chemical properties make it highly resistant to hydrocarbons and many other fluids, which often quickly degrade existing rubber based coupling sleeves. With all the advantages to the new Hytrel® sleeves can be a long term reliable pump coupling sleeve.

Hubs, Flanges and Spacers ……

Die cast hubs in a high strength alloy are furnished  in either pilot bore or finished bore format. For the coupling sizes 3 & 4 hubs are manufacturing from high tensile strength zinc alloy; for all other sizes a cast iron in employed. In all cases the outside diameter is precision machined to ensure concentricity. Hubs can be supplied to suit shaft sizes from 10mm to 100mm. Keyways in the hubs and flanges can be supplied on request. Pilot bore hubs are available from stock.

Tel : (+44) 01386 421005
Fax : (+44) 01386 422441