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Isoflex Technologies Component

Gearbox Coupling IFC-4550-95

Isoflex IFC-4550-95 flexible coupling for 4-bolt gearbox flanges: 107.95 mm bolt circle, 150 mm OD, rated 435 Nm heavy duty / 650 Nm medium duty.

Description

The Isoflex IFC-4550-95 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: 107.95 mm (4 1/4 in)
  • Gearbox flange bolt size: 7/16" UNF
  • Gearbox flange index ring type: F (female)
  • Gearbox flange index ring diameter: 63.5 mm (2 1/2 in)
  • Coupling outside diameter: 150 mm (5.91 in)
  • Coupling inside diameter: 45 mm (1.77 in)
  • Coupling thickness: 28.6 mm (1 1/8 in)
  • Approx. weight incl. bolt set: 1.2 kg (2.6 lb)

Torque ratings

  • Heavy duty: 435 Nm (320 ft-lb)
  • Medium duty: 650 Nm (470 ft-lb)
  • Pleasure craft: 740 Nm (540 ft-lb)

Specifications

Feature Metric Imperial
Gearbox Flange Bolt Circle Diameter 107.95 [4 1/4"] 4 1/4
Gearbox Flange Bolt Size 7/16" UNF 7/16" UNF
Gearbox Flange Index Ring Type F F
Gearbox Flange Index Ring Diameter 63.5 [2 1/2"] 2 1/2
Isoflex Coupling Outside Diameter 150 5.91
Isoflex Coupling Inside Diameter 45 1.77
Isoflex Coupling Thickness 28.6 1 1/8
Heavy Duty 435 320
Medium Duty 650 470
Pleasure Craft 740 540
Approx Weight incl. Bolt Set 1.2 2.6

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