Isoflex Technologies Component
Gearbox Coupling IFC-4300-SP
Isoflex IFC-4300-SP flexible coupling for 4-bolt gearbox flanges: 82.55 mm bolt circle, 125 mm OD, rated 500 Nm heavy duty / 750 Nm medium duty.
Description
The Isoflex IFC-4300-SP is a flexible gearbox coupling for 4-bolt gearbox output flanges. Isoflex couplings provide a sacrificial link designed to fail before gearbox damage occurs, allow controlled engine movement to isolate vibration and help alleviate thrust-induced driveline misalignment. Designed for marine use, they are also used in industrial drivelines.
Technical data
- Gearbox flange bolt circle diameter: 82.55 mm (3 1/4 in)
- Gearbox flange bolt size: 3/8" UNF
- Gearbox flange index ring type: F (female)
- Gearbox flange index ring diameter: 66.80 mm (2.630 in)
- Coupling outside diameter: 125 mm (4.92 in)
- Coupling inside diameter: 45 mm (1.77 in)
- Coupling thickness: 25.0 mm (1 in)
- Approx. weight incl. bolt set: 0.7 kg (1.5 lb)
Torque ratings
- Heavy duty: 500 Nm (360 ft-lb)
- Medium duty: 750 Nm (550 ft-lb)
- Pleasure craft: 850 Nm (620 ft-lb)
Specifications
| Feature | Metric | Imperial |
|---|---|---|
| Gearbox Flange Bolt Circle Diameter | 82.55 [3 1/4"] | 3 1/4 |
| Gearbox Flange Bolt Size | 3/8" UNF | 3/8" UNF |
| Gearbox Flange Index Ring Type | F | F |
| Gearbox Flange Index Ring Diameter | 66.80 | 2.630 |
| Isoflex Coupling Outside Diameter | 125 | 4.92 |
| Isoflex Coupling Inside Diameter | 45 | 1.77 |
| Isoflex Coupling Thickness | 25.0 | 1 |
| Heavy Duty | 500 | 360 |
| Medium Duty | 750 | 550 |
| Pleasure Craft | 850 | 620 |
| Approx Weight incl. Bolt Set | 0.7 | 1.5 |
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