Vetus Bullflex flexible Coupling Type 8, shaft Ø 1 1/4" - at 3600 RPM - gear reduction 2:1 - Max 127 HP
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Vetus Bullflex flexible coupling for Ø 1 1/4" shaft and up to 127hp 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" flange and shaft diameter 1 1/4"
- BullFlex recommendations at 3600 RPM:
- Gear 2:1 reduction: Max 127 Hp
- Gear 2.5:1 reduction: Max 102 Hp
Features
- 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
- FLANGE1 Adapter flange for Yanmar
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| Manufacturer | Vetus |
|---|---|
| Shaft diameter (inches) | 1 1/4" (31.75mm) |
| Type flex coupling | Bullflex |
| D (mm) | 170 |
| L (inches) | 6 9/16 |
| D (inches) | 6 35/64 |
| Max. RPM at 2º misalignment | 2500 |
| Max. RPM at zero misalignment | 5000 |
| Max. torque Nm DIN 6270A | 410 |
| Max. torque Nm DIN 6270B | 600 |
| DIN 6270A = commercial craft kW (HP)/100 shaft RPM | 4.3 (5.8) |
| DIN 6270B = pleasure craft kW (HP)/100 shaft RPM | 6.3 (8.5) |
| L (mm) | 166 |
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