Quadra-Flex® Type S Couplings (Bored-to-Size)

Type S flexible coupling flanges are bored to size to fit on any standard shaft. They are produced from high-strength cast iron. Units are easy to install and remove and are stocked in a wide range of bore sizes. 

Coupling SizeFinished Bore Sizes (Inches / mm)
5S.625, .75, .813, .875, .938, 1, 1.063, 1.125, 1.188, 1.25 
15mm, 20mm, 25mm
6S.75, .875, .938, 1, 1.063, 1.125, 1.188, 1.25, 1.313, 1.375, 1.438, 1.5, 1.625, 1.75, 1.875 
20mm, 25mm, 28mm, 30mm, 35mm
7S.75, .875, .938, 1, 1.063, 1.125, 1.188, 1.25, 1.313, 1.375, 1.438, 1.5, 1.563, 1.625, 1.688, 1.75, 1.875 
25mm, 28mm, 30mm, 38mm, 42mm
8S.875, .938, 1, 1.063, 1.125, 1.188, 1.25, 1.313, 1.375, 1.438, 1.5, 1.563, 1.625, 1.688, 1.75, 1.875, 1.938, 2, 2.063, 2.125, 2.375 
28mm, 30mm, 32mm, 38mm, 42mm, 48mm
9S.938, 1, 1.063, 1.125, 1.25, 1.375, 1.438, 1.5, 1.563, 1.625, 1.688, 1.75, 1.875, 1.938, 2, 2.063, 2.125, 2.188, 2.25, 2.375, 2.5, 2.875 
30mm, 32mm, 38mm, 42mm, 48mm
10S1.125, 1.25, 1.375, 1.438, 1.5, 1.563, 1.625, 1.688, 1.75, 1.875, 1.938, 2, 2.063, 2.125, 2.188, 2.25, 2.375, 2.438, 2.5, 2.75, 2.875, 3.375 
55mm, 60mm
11S1.25, 1.375, 1.438, 1.563, 1.625, 1.75, 1.875, 2, 2.063, 2.125, 2.25, 2.375, 2.5, 2.625, 2.75, 2.875, 3.375, 3.875 
90mm
12S1.875, 2.125, 2.375, 2.625, 2.875, 3.375, 3.875, 3.938
13S2.375, 2.875, 3.375
14S2.875
16S*

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