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Isoflex Technologies Component

Isoflex Gearbox Coupling IFC-81610-HT (8-bolt)

Isoflex IFC-81610-HT flexible coupling for 8-bolt gearbox flanges: 155.6 mm bolt circle, 220 mm OD, rated 3700 Nm heavy duty / 5500 Nm medium duty.

Description

The Isoflex IFC-81610-HT is a flexible gearbox coupling for 8-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: 155.6 mm (6 1/8 in)
  • Gearbox flange bolt size: 3/8" UNF
  • Gearbox flange index ring type: F (female)
  • Gearbox flange index ring diameter: 168.28 mm (6 5/8 in)
  • Coupling outside diameter: 220 mm (8.66 in)
  • Coupling inside diameter: 50 mm (1.97 in)
  • Coupling thickness: 28 mm (1.10 in)
  • Approx. weight incl. bolt set: 2.2 kg (4.9 lb)

Torque ratings

  • Heavy duty: 3700 Nm (2720 ft-lb)
  • Medium duty: 5500 Nm (4050 ft-lb)
  • Pleasure craft: use Medium Duty rating

Specifications

Feature Metric Imperial
Gearbox Flange Bolt Circle Diameter 155.6 [6 1/8"] 6 1/8
Gearbox Flange Bolt Size 3/8" UNF 3/8" UNF
Gearbox Flange Index Ring Type F F
Gearbox Flange Index Ring Diameter 168.28 [6 5/8"] 6 5/8
Isoflex Coupling Outside Diameter 220 8.66
Isoflex Coupling Inside Diameter 50 1.97
Isoflex Coupling Thickness 28 1.10
Heavy Duty 3700 2720
Medium Duty 5500 4050
Pleasure Craft Use Medium Use Medium
Approx Weight incl. Bolt Set 2.2 4.9

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