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Isoflex Technologies Component

Isoflex Gearbox Coupling IFC-4800-95 (4-bolt)

Isoflex IFC-4800-95 flexible coupling for 4-bolt gearbox flanges: 79.38 mm bolt circle, 125 mm OD, rated 310 Nm heavy duty / 465 Nm medium duty.

Description

The Isoflex IFC-4800-95 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: 79.38 mm (3 1/8 in)
  • Gearbox flange bolt size: 3/8" UNF
  • Gearbox flange index ring type: F (female)
  • Gearbox flange index ring diameter: 60.32 mm (2 3/8 in)
  • Coupling outside diameter: 125 mm (4.92 in)
  • Coupling inside diameter: 35 mm (1.38 in)
  • Coupling thickness: 25.0 mm (1 in)
  • Approx. weight incl. bolt set: 0.7 kg (1.5 lb)

Torque ratings

  • Heavy duty: 310 Nm (220 ft-lb)
  • Medium duty: 465 Nm (340 ft-lb)
  • Pleasure craft: 525 Nm (380 ft-lb)

Specifications

Feature Metric Imperial
Gearbox Flange Bolt Circle Diameter 79.38* [3 1/8"] 3 1/8*
Gearbox Flange Bolt Size 3/8" UNF 3/8" UNF
Gearbox Flange Index Ring Type F F
Gearbox Flange Index Ring Diameter 60.32 [2 3/8"] 2 3/8
Isoflex Coupling Outside Diameter 125 4.92
Isoflex Coupling Inside Diameter 35 1.38
Isoflex Coupling Thickness 25.0 1
Heavy Duty 310 220
Medium Duty 465 340
Pleasure Craft 525 380
Approx Weight incl. Bolt Set 0.7 1.5

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