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GEARguard 8 Bolt Couplings

“Eight” bolt couplings are used on eight¬†bolt hole gearbox output flanges. Spigots or pilots can be either male or female. IsoFlex couplings are configured to the most common flanges. On “eight” bolt couplings, special steel spigots, pilots or registers are fitted to maintain absolute dimensions. Note certain couplings need a T bush kit. IsoFlex¬†can supply certain adapters.

 

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Imperial Metric

Coupling Model Gearbox Flange Bolt
Circle Diameter
(mm)
Gearbox Flange Bolt
Size
Gearbox Flange Index
Ring Type
Gearbox Flange Index
Ring Diameter
(mm)
Isoflex Coupling
Outside Diameter
(mm)
Isoflex Coupling
Inside Diameter
(mm)
Isoflex Coupling
Thickness
(mm)
Heavy Duty
(Nm)
Medium Duty
(Nm)
Pleasure Craft
(Nm)
Download
IFC8100(95) 190.5 8 x M16 SHCS ** M 152.4 275 95 38.1 8500 12750 Use Medium Data Sheet
IFC8100 HT 190.5 8 x M16 SHCS ** M 152.4 275 95 38.1 8500 12750 Use Medium Data Sheet
IFC8200(95) 190.5 8 x M16 SHCS ** M 152.4 242 95 38.1 4500 6750 Use Medium Data Sheet
IFC8200 HT 190.5 8 x M16 SHCS ** M 152.4 242 95 38.1 7900 11850 Use Medium Data Sheet
IFC8300(95) 152.4 8 x M16 SHCS ** M 85.73 195 73 38.1 3000 4500 Use Medium Data Sheet
IFC8400(95) 200 8 x M16 SHCS ** M 110 275 75 38.1 7000 10500 Use Medium Data Sheet
IFC8400 HT 200 8 x M16 SHCS ** M 110 275 75 38.1 10500 15750 Use Medium Data Sheet
IFC8500(95) 222.25 8 x M20 M 127 315 75 45.0 8500 12750 Use Medium Data Sheet
IFC8534(95) 222.25 8 x 3/4inch M 127 315 75 45.0 8500 12750 Use Medium Data Sheet
IFC8600(95) 230 8 x M20 M 150 315 100 45.0 8650 12975 Use Medium Data Sheet
IFC8690(95) 228.6 8 x 3/4inch M 152.4 300 95 45.0 8650 12975 Use Medium Data Sheet
IFC8695(95) 241.3 8 x 3/4inch M 152.4 330 95 45.0 9000 13500 Use Medium Data Sheet
IFC8695 HT 241.3 8 x 3/4inch M 152.4 330 95 45.0 13350 20100 Use Medium Data Sheet
IFC8700(95) 280 8 x 7/8inch F 200 355 75 50.0 10000 15000 Use Medium Data Sheet
IFC8800(95) 340 8 x 1inch M 180 455 130 60.0 22500 33750 Use Medium Data Sheet
Coupling Model Gearbox Flange Bolt
Circle Diameter
(in)
Gearbox Flange Bolt
Size
Gearbox Flange Index
Ring Type
Gearbox Flange Index
Ring Diameter
(in)
Isoflex Coupling
Outside Diameter
(in)
Isoflex Coupling
Inside Diameter
(in)
Isoflex Coupling
Thickness
(in)
Heavy Duty
(ftlb)
Medium Duty
(ftlb)
Pleasure Craft
(ftlb)
Download
IFC8100(95) 7.50 8 x M16 SHCS ** M 6.00 10.83 3.74 1.5 6265 9397 Use Medium Data Sheet
IFC8100 HT 7.50 8 x M16 SHCS ** M 6.00 10.83 3.74 1.5 6150 9220 Use Medium Data Sheet
IFC8200(95) 7.50 8 x M16 SHCS ** M 6.00 9.53 3.74 1.5 3317 4975 Use Medium Data Sheet
IFC8200 HT 7.50 8 x M16 SHCS ** M 6.00 9.53 3.74 1.5 5822 8733 Use Medium Data Sheet
IFC8300(95) 6.00 8 x M16 SHCS ** M 3.38 7.68 2.87 1.5 2211 3317 Use Medium Data Sheet
IFC8400(95) 7.87 8 x M16 SHCS ** M 4.33 10.83 2.95 1.5 6150 7600 Use Medium Data Sheet
IFC8400 HT 7.87 8 x M16 SHCS ** M 4.33 10.83 2.95 1.5 7600 11400 Use Medium Data Sheet
IFC8500(95) 8.75 8 x M20 M 5.00 12.40 2.95 1.8 6265 9397 Use Medium Data Sheet
IFC8534(95) 8.75 8 x 3/4inch M 5.00 12.40 2.95 1.8 6265 9397 Use Medium Data Sheet
IFC8600(95) 9.06 8 x M20 M 5.91 12.40 3.94 1.8 6375 9563 Use Medium Data Sheet
IFC8690(95) 9.00 8 x 3/4inch M 6.00 11.81 3.74 1.8 6375 9563 Use Medium Data Sheet
IFC8695(95) 9.50 8 x 3/4inch M 6.00 13.0 3.74 1.8 6633 9950 Use Medium Data Sheet
IFC8695 HT 9.50 8 x 3/4inch M 6.00 13.0 3.74 1.77 9650 14500 Use Medium Data Sheet
IFC8700(95) 11.02 8 x 7/8inch F 7.87 13.98 2.95 2.0 7370 11055 Use Medium Data Sheet
IFC8800(95) 13.39 8 x 1inch M 7.09 17.91 5.12 2.4 16583 24874 Use Medium Data Sheet
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