4 Bolt Couplings

Four bolt couplings are used on four bolt hole gearbox output flanges. Spigots or pilots can be either male or female. Isoflex couplings are configured to the most common flanges.

* Couplings IFC-4700-95, IFC-4800-95 and IFC-4900-95 have a Spicer bolt pattern






View:


ModelGearbox Flange
Bolt Circle
Diameter (mm)(in)
Gearbox Flange
Bolt Size
Gearbox Flange
Index Ring
Type
Gearbox Flange
Index Ring
Diameter (mm)(in)
Isoflex Coupling
Outside
Diameter (mm)(in)
Isoflex Coupling
Inside
Diameter (mm)(in)
Isoflex Coupling
Thickness (mm)(in)
Heavy Duty (Nm)(ftlb)Medium Duty (Nm)(ftlb)Pleasure Craft (Nm)(ftlb)Data Sheet
IFC-4200-90783.07M10M10 [3/8" approx.]FF501.971254.92351.3825.01400290600440680500Download
IFC-4300-SP82.55 [3 1/4"]3 1/43/8" UNF3/8" UNFFF66.802.6301254.92451.7725.01500360750550850620Download
IFC-4300-9582.55 [3 1/4"]3 1/43/8" UNF3/8" UNFFF63.5 [2 1/2"]2 1/21254.92451.7725.01500360750550850620Download
IFC-4400-951003.94M10M10 [3/8" approx.]FF652.561455.71501.9725.01500360750550850620Download
IFC-4500-HT107.95 [4 1/4"]4 1/47/16" UNF7/16" UNFFF63.5 [2 1/2"]2 1/21485.83451.7728.61 1/811808601770130020001470Download
IFC-4500-IV-HT107.95 [4 1/4"]4 1/47/16" UNF7/16" UNFFF63.5 [2 1/2"]2 1/21505.91542.12361.4211808601770130020001470Download
IFC-4500-95107.95 [4 1/4"]4 1/47/16" UNF7/16" UNFFF63.5 [2 1/2"]2 1/21505.91451.7728.61 1/867549010007301150840Download
IFC-4550-HT107.95 [4 1/4"]4 1/47/16" UNF7/16"UNFFF63.5 [2 1/2"]2 1/21505.91451.7728.61 1/8900660135099015301120Download
IFC-4550-95107.95 [4 1/4"]4 1/47/16" UNF7/16" UNFFF63.5 [2 1/2"]2 1/21505.91451.7728.61 1/8435320650470740540Download
IFC-4600-95803.15M10M10 [3/8" approx.]MM602.361254.92351.3825.01375270560410640470Download
IFC-4700-95*95.25* [3 3/4"]3 3/4*7/16" UNF7/16"UNFFF69.85 [2 3/4"]2 3/41355.31501.9732.01 1/46004409006601000730Download
IFC-4800-95*79.375* [3 1/8"]3 1/8*3/8" UNF3/8" UNFFF60.33 [2 3/8"]2 3/81254.92351.3825.01310220465340525380Download
IFC-4900-95*120.65* [4 3/4"]4 3/4*1/2" UNC1/2" UNCFF95.25 [3 3/4"]3 3/41756.89501.9736.61.4412008801800132020001470Download