ID
975924
$ 1,753.80
1-2 weeks delivery time
-
+
The Vetus BULFL1650 Bullflex 16 Flexible Coupling (shaft Ø 50 mm, type 16) is a high-capacity marine coupling engineered for optimal damping of torsional and axial vibrations. With a 205 mm diameter and 197 mm height, it is rated up to 256 HP at 3000 RPM (2:1 gear reduction) and compensates for misalignment of up to 2°. Its pre-tensioned flexible rubber element ensures quiet, vibration-free, and backlash-free torque transmission. The coupling guarantees galvanic isolation between the engine and the propeller shaft, provides precise alignment through a special centering ring, and integrates a thrust damper and non-tapered clamping hub for safe, reliable operation and effortless installation.
- Description
- Ask a Question
-
Vetus BULFL1650 Bullflex 16 Flexible Coupling for 50 mm Shaft
The Vetus BULFL1650 Bullflex 16 Flexible Coupling is designed to deliver superior vibration isolation and smooth power transmission for marine propulsion systems utilizing a 50 mm propeller shaft. It effectively absorbs torsional and axial vibrations caused by engine operation, ensuring quiet and efficient performance. The coupling’s high flexibility allows for misalignment up to 2° while maintaining perfect shaft centering and galvanic isolation between the engine and shaft, thereby preventing corrosion and mechanical wear. Its robust, maintenance-free design provides long-lasting reliability and stability under demanding marine conditions.
Key Features
- High torsional flexibility for effective vibration and noise reduction
- Axially and radially secured for safe operation under all conditions
- Permissible shaft misalignment up to 2°
- Excellent shaft centering and alignment at all RPM levels
- Shaft remains centered even during reverse gear operation
- Removable centering ring for multi-bearing installations
- Integrated thrust damper for reduced axial vibration
- Non-tapered clamping hub for precise centering and easy removal
- Provides galvanic isolation between engine and propeller shaft
- Durable, maintenance-free marine construction
Performance Ratings (at 3000 RPM)
- Gear 2:1 reduction – Maximum 256 HP
- Gear 2.5:1 reduction – Maximum 205 HP
Installation Compatibility
Without adapter: Fits directly on Hurth, Velvet, Technodrive, ZF, and P.R.M. gearboxes using the UNISET4/5 stud and bolt set.
With adapter: For other gearbox types, adapter flanges are available (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, and all MS2 series FLANGE3 Yanmar KM4A, KM4A1, KMH4A, KBW20-1, KBW21, Kanzaki KC180
Technical Specifications
Parameter Specification Model BULFL1650 (Bullflex Type 16) Shaft Diameter Ø 50 mm Overall Diameter (D) 205 mm Height (L) 197 mm Pleasure Craft Power Ratio (DIN 6270B) 17.1 HP / 100 RPM (12.6 kW) Commercial Craft Power Ratio (DIN 6270A) 13.3 HP / 100 RPM (9.8 kW) Max Torque (Pleasure Craft) 1200 Nm Max Torque (Commercial Craft) 935 Nm Max RPM (Zero Misalignment) 4000 RPM Max RPM (at 2° Misalignment) 2000 RPM Flange Options Combined 4″ and 5″ flanges Material Marine-grade rubber with precision-machined steel hub Galvanic Isolation Yes
Dimensional Overview
- Type: Bullflex 16
- Flange size: 4″ & 5″ combined
- Shaft diameter: 50 mm
- Length L: 197 mm
- Diameter D: 205 mm
Advantages of the Bullflex Coupling
- Exceptional damping of torsional and axial vibrations
- Quiet, backlash-free torque transmission
- Reliable shaft alignment and long-term drivetrain stability
- Corrosion-resistant, galvanically isolated construction
- Easy to install, maintain, and disassemble
-
Popular products
-
-
-
-
-
-
-
-
1-2 weeks delivery time$ 108.44 -
-
1-2 weeks delivery time$ 14.82