Products - Samiflex (Page 2 of 2)

The Samiflex elastic insert is manufactured from a special blend of polyurethane compound manufactured to best meet the demanding characteristics of a high performance elastic coupling.

Samiflex elastic inserts are offered in three styles of compound and five hardness ratings allowing the most appropriate insert to be selected for the application.

The standard elastic insert is supplied at 95 shore and is a yellow colour. High performance inserts type HD and HDT are coloured ochre and red respectively and enable Samiflex torque ratings to be increased by 40% (consult factory).

Coupling Selection

Method

Coupling Selection

Example

Data required for Coupling Selection.
•	Application details (for service factor)
•	Kilowatt and rpm of the driver
•	Shaft details of the driving and driven equipment

(1)	Determine the service factor (SF) from the application and classification lists noted below.

(2)	Calculate the maximum Kw/1000 rpm rating: Kw/1000 rpm = (Kw x 1000 x SF)/rpm Select the coupling which has a higher max rating.

(3)	Compare the maximum rpm capacity & bore requirements to the catalogue limits for the coupling selected

Driver: Water Turbine
(75 Kw at 1500 rpm)

Driven equipment: Screw Compressor

Turbine Bore: 60 mm
Compressor Bore: 50 mm
Distance Between Shaft Ends: 140 mm

Service Factor for the Water Turbine & Screw Compressor: SF=2

Kw/1000 rpm =
(75 Kw x 1000 x 2)/1500

Kw/1000 rpm = 100

Coupling selection based on max rating: A4B

Coupling Bore Capacity: 75 mm

Maximum Speed for the A4B is 3275 rpm unbalanced.

DBSE for the A4B Type SP is 140 mm
The A4B Type SP is acceptable in this application.