COFLEX semi-elastic couplings

Product catalog summary

General Characteristics
COFLEX® semi-elastic couplings feature an elastic element made in a star shape, suitable for temperatures ranging from -40°C to 80°C. For temperatures beyond this range, consultation with the manufacturer is advised.

Selection Process
To select the appropriate coupling, calculate the torque to be transmitted using the formula: C = 9550 x P/N, where P is power in kW and N is rotation speed in rpm. Adjust the torque by multiplying it with the service factor based on the type of engine and load. Ensure the corrected torque does not exceed the nominal torque of the coupling.

Installation Guidelines
Couplings are available in pre-bored (type C) or with a VECOBLOC® removable bush (type CV). Proper alignment of shafts is crucial for the longevity of the coupling. Specify the installation position of the bush (FF, HH, or FH) when ordering.

Technical Characteristics
The document provides a detailed table of nominal torque, maximum rotation speed, and permissible misalignment for various sizes of couplings. For example, size 28 has a nominal torque of 80 Nm and a maximum rotation speed of 8100 rpm.

Pre-bored Version Specifications
Details are provided for each size, including minimum and maximum bore diameters, dimensions, and weights. For instance, size C28 has a minimum bore of 10 mm and a maximum bore of 32 mm, with a total weight of 0.77 kg.

VECOBLOC® Bush Version Specifications
Specifications for couplings with VECOBLOC® bushes include bore sizes, dimensions, and weights. For example, size CV28 has a bore range of 12 to 28 mm and a total weight of 0.62 kg.

Assembly Considerations
Clearance for assembly and specific material requirements for certain bush sizes are noted, such as the need for steel bushes for certain dimensions.

Catalog excerpts

TECHNICAL DATA SHEET > Ε Elastic element made in one piece in a star shape. Use temperature range : -40հC to 80C.Over this value, please call us. > Е Calculate the torque to transmit (Nm)P : power (kW)C = 9550 x P N : rotation speed (rpm) N Correct the torque value mutiplying it by the service factor in the table below Internal combustion en g ines - 1 to 3 c y linders - unevenness factor : 1/80 to 1/100 Internal combustion engines - 4 to 6 cylinders - unevenness factor : 1/100 to 1/200 Electric motor - Steam turbine - Water turbine Load t yp eDriven machines LightAgitators - Conveyors - Centrifugal compressors - Dynamometers - Air filter - Generators - 1,01,52,0 dutyShafts lines - Centrifugal pumps - Centrifugal fans MediumAgitators - Lifting material - Overshot elevator - Textile machinery - Machine tools - 1,52,02,5 dutyWood working machinery - Mixers - Gyratory pumps - Printing presses - Hoist - Mining fans HighLifting material - Hammer mills - Crushers - Rotative compressors - Dredgers - Calenders - 2,02,53,0 dutyGyratory furnaces - Brick machinery - Cutting presses High inertia ShocksGyratory crushers - Alternative conveyors - Vibrating screens - Alternative compressors 2,53,03,5 Torque inversionRubber calenders - Mills - Alternative pumps Rotation inversion Օ Check that the rectified torque is below the nominal torque of the coupling > The couplings exist in a pre-bored version (type C) or with a VECOBLOC > ծ removable bush (type CV) For the CV type, the installation position of the FF, HH or FH bush (see over) must be specified with order Օ A correct alignment of the shafts gives the length of live of the coupling > SizeNominal torqueMaxi. rotation speedOut of alignment (Nm)(rpm)angular > mm) 28 80810010,30,5 32 160640010,40,5 42 240520010,51 50 360440010,61 65 650390010,71 75 1280310010,81 90 3400250010,91 The alignment defaults must not exceed the indicated values. If it exist several simultaneous defaults, the indicated values will be lower. >

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