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Isoflex Gearbox Coupling IFC-4900-95 (4-bolt)

Isoflex IFC-4900-95 flexible coupling for 4-bolt gearbox flanges: 120.65 mm bolt circle, 175 mm OD, rated 1200 Nm heavy duty / 1800 Nm medium duty.

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Description

The Isoflex IFC-4900-95 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: 120.65 mm (4 3/4 in)
  • Gearbox flange bolt size: 1/2" UNC
  • Gearbox flange index ring type: F (female)
  • Gearbox flange index ring diameter: 95.25 mm (3 3/4 in)
  • Coupling outside diameter: 175 mm (6.89 in)
  • Coupling inside diameter: 50 mm (1.97 in)
  • Coupling thickness: 36.6 mm (1.44 in)
  • Approx. weight incl. bolt set: 2.1 kg (4.6 lb)

Torque ratings

  • Heavy duty: 1200 Nm (880 ft-lb)
  • Medium duty: 1800 Nm (1320 ft-lb)
  • Pleasure craft: 2000 Nm (1470 ft-lb)

Specifications

Feature Metric Imperial
Gearbox Flange Bolt Circle Diameter 120.65* [4 3/4"] 4 3/4*
Gearbox Flange Bolt Size 1/2" UNC 1/2" UNC
Gearbox Flange Index Ring Type F F
Gearbox Flange Index Ring Diameter 95.25 [3 3/4"] 3 3/4
Isoflex Coupling Outside Diameter 175 6.89
Isoflex Coupling Inside Diameter 50 1.97
Isoflex Coupling Thickness 36.6 1.44
Heavy Duty 1200 880
Medium Duty 1800 1320
Pleasure Craft 2000 1470
Approx Weight incl. Bolt Set 2.1 4.6

Documents

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