ID
975203
$ 1,334.88
1-2 weeks delivery time
-
+
The Vetus BULFL0812 Bullflex 8 Flexible Coupling (shaft Ø 1 ½", type 8) is engineered for high torque and superior vibration damping in marine propulsion systems. With a 200 mm diameter and 177 mm height, it ensures smooth, noise-free power transfer between the engine and propeller shaft. Designed to handle up to 127 HP at 3600 RPM (2:1 reduction), it accommodates up to 2° misalignment and provides galvanic isolation. The integrated centering ring and non-tapered clamping hub allow precise alignment, secure coupling, and easy installation.
- Description
- Ask a Question
-
Vetus BULFL0812 Bullflex 8 Flexible Coupling for 1 ½" Shaft
The Vetus BULFL0812 Bullflex 8 Flexible Coupling offers outstanding vibration damping, alignment precision, and safety in marine propulsion systems. Designed for 1 ½" propeller shafts, it transmits power efficiently while absorbing torsional vibrations through a pre-tensioned flexible rubber element. The coupling guarantees low-noise, backlash-free transmission and galvanic separation between the engine and propeller shaft.
Key Features
- Exceptional flexibility for optimal vibration absorption
- Secure transmission protected against axial and radial shear
- Permissible misalignment up to 2°
- Excellent shaft centering for high rotational stability
- Removable centering ring for multi-bearing setups
- Built-in thrust damper reducing axial vibration
- Non-tapered clamping hub for precise alignment and easy dismantling
- Maintains shaft alignment even in reverse gear
- Provides full galvanic isolation between engine and shaft
Installation Compatibility
Without adapter: The Bullflex 8 fits directly on Hurth, Velvet, Technodrive, ZF, and P.R.M. gearboxes. Use stud and bolt set UNISET4/5.
With adapter: For other gearbox models, adapter flanges are required (nuts and bolts included):
Adapter Flange Compatible Gearboxes FLANGE1 Yanmar KM2C, KMP2P, KM3P, Kanzaki KC30, KC45, KC100 FLANGE2 Volvo MS10A/L, MS15A/L, MS25A/L FLANGE2A Volvo MS, MSB, MS2 (all models) FLANGE3 Yanmar KM4A, KM4A1, KMH4A, KBW20-1, KBW21, Kanzaki KC180
Performance Ratings (at 3600 RPM)
- Gear 2:1 reduction – Max 127 HP
- Gear 2.5:1 reduction – Max 102 HP
Technical Specifications
Parameter Specification Model BULFL0812 (Bullflex Type 8) Shaft Diameter Ø 1 ½" (35–45 mm) Overall Diameter 200 mm Height (L) 177 mm Max Torque (Pleasure Craft) 600 Nm Max Torque (Commercial Craft) 410 Nm Max RPM (Zero Misalignment) 5000 RPM Max RPM (at 2° Misalignment) 2500 RPM Pleasure Craft Power Ratio (DIN 6270B) 12.8 HP / 100 RPM (9.8 kW) Commercial Craft Power Ratio (DIN 6270A) 9.6 HP / 100 RPM (7.1 kW) Material Marine-grade rubber and precision-machined steel Galvanic Isolation Yes
Dimensional Overview
- Type: Bullflex 8
- Flange Size: Combined 4″
- Shaft Diameter: 1 ½″ (≈ 38.1 mm)
- Length L: 177 mm
- Diameter D: 200 mm
Advantages of the Bullflex Coupling
- Excellent damping of torsional vibrations
- Quiet, backlash-free power transfer
- Durable and corrosion-resistant construction
- High-speed performance with 2° misalignment tolerance
- Simple installation and easy servicing
-
Popular products
