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Vetus Bullflex flexible Coupling Type 32, shaft Ø 2" - at 3000 RPM - gear reduction 2:1 - Max 439 HP

Special Price EUR1,934.66 Regular Price EUR2,359.34
Offer valid until 19-12-23
In stock
Item No
Buy now and receive it between 15.12.23 and 22.12.23
The delivery date interval gives you an indication of how long it will take to receive the item. It's based on the order handling time, delivery method and product availability.

Vetus Bullflex flexible coupling for Ø 2" shaft and up to 439hp at 2:1 gear reduction is specially designed to ensure optimal damping of vibrations and can handle misalignment of up to 2º.
Torsional vibrations are smoothed out extremely efficiently by its very flexible rubber element, ensuring low-noise and vibration-free transmission without backlash between the engine and propeller shaft.
Another strong characteristic is the excellent alignment of the propeller shaft.
This coupling also ensures that there is galvanic separation between engine and shaft.

  • BullFlex with combined 4" and 5" flange and shaft diameter 2"
  • BullFlex recommendations at 3000 RPM:
    • Gear 2:1 reduction: Max 439 Hp
    • Gear 2.5:1 reduction: Max 370 Hp


  • Very high flexibility
  • Secured against shearing off (axially and radially) ensuring safe transmission under all circumstances
  • Misalignment of up to 2º permissible
  • Excellent centring of the shaft, allowing high shaft revolutions
  • Shaft remains centred even in reverse gear
  • Possibility to remove the centring ring, in case two or more bearings are applied
  • Built-in thrust damper reducing axial vibrations
  • Non-tapered clamping hub for perfect centring and easy dismantling of the shaft assembly

Installation without adapter:

  • Bulflex fist without adapter on Hurth, Velvet, Technodrive, ZF and P.R.M. gearboxes.
  • You need studs and bolt set UNISET4/5

Intallation with adapter

  • For other gearboxes an adapter is needed- please note that nuts and bolts is included
    • FLANGE1 Adapter flange for Yanmar
      • KM2C; KMP2P; KM3P, Kanzaki KC30; KC45 and KC100
    • FLANGE2 Adapter flange for Volvo
      • MS10A/L; MS15A/L and MS25A/L
    • FLANGE2A Adapter flange for Volvo
      • MS; MSB and all types MS2
    • FLANGE3 Adapter flange for Yanmar
      • KM4A; KM4A1; KMH4A; KBW20-1; KBW21 and Kanzaki KC180

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More Information
Manufacturer Vetus
Shaft diameter (inches) 2" (50.8mm)
Type flex coupling Bullflex
D (mm) 260
L (inches) 10 3/8
D (inches) 10 1/4
Max. RPM at 2º misalignment 1800
Max. RPM at zero misalignment 3600
Max. torque Nm DIN 6270A 1780
Max. torque Nm DIN 6270B 2200
DIN 6270A = commercial craft kW (HP)/100 shaft RPM 18.6 (25.3)
DIN 6270B = pleasure craft kW (HP)/100 shaft RPM 23.0 (31.3)
L (mm) 263
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