ID
975207
$ 2,002.99
1-2 weeks delivery time
-
+
The Vetus BULFL1612 Bullflex 16 Flexible Coupling (shaft Ø 1 ½", type 16) is a heavy-duty marine coupling designed for engines up to 256 HP at 3000 RPM (2:1 reduction). With a robust 205 mm diameter and 197 mm height, it ensures exceptional vibration damping and precise shaft alignment. The flexible rubber element provides smooth, noise-free transmission without backlash, while a built-in thrust damper minimizes axial vibrations. Suitable for up to 2° misalignment, the coupling includes galvanic isolation, a removable centering ring, and a non-tapered clamping hub for accurate, reliable installation.
- Description
- Ask a Question
-
Vetus BULFL1612 Bullflex 16 Flexible Coupling for 1 ½" Shaft
The Vetus BULFL1612 Bullflex 16 Flexible Coupling is engineered for high-torque marine propulsion systems requiring precise alignment, vibration isolation, and reliability. Its pre-tensioned rubber element efficiently absorbs torsional and axial vibrations, delivering smooth, quiet, and backlash-free power transmission between the engine and the propeller shaft. The coupling permits up to 2° misalignment without compromising performance and ensures galvanic separation to prevent electrochemical corrosion.
Key Features
- Extremely high flexibility for superior vibration absorption
- Safe transmission secured against axial and radial shearing
- Permissible misalignment up to 2°
- Excellent shaft centering for high rotational stability
- Shaft remains aligned even in reverse gear
- Removable centering ring for multi-bearing configurations
- Built-in thrust damper to reduce axial vibrations
- Non-tapered clamping hub for precise alignment and easy dismantling
- Galvanic isolation between engine and propeller shaft
Installation Compatibility
Without adapter: Fits directly onto 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 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, and all MS2 series FLANGE3 Yanmar KM4A, KM4A1, KMH4A, KBW20-1, KBW21, Kanzaki KC180
Performance Ratings (at 3000 RPM)
- Gear 2:1 reduction – Maximum 256 HP
- Gear 2.5:1 reduction – Maximum 205 HP
Technical Specifications
Parameter Specification Model BULFL1612 (Bullflex Type 16) Shaft Diameter Ø 1 ½" (40–50 mm) Overall Diameter (D) 205 mm Height (L) 197 mm 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 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) 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: Combined 4″ and 5″
- Shaft diameter: 1 ½″ (≈ 38.1 mm)
- Length L: 197 mm
- Diameter D: 205 mm
Advantages of the Bullflex Coupling
- Optimum damping of torsional and axial vibrations
- Quiet and backlash-free operation
- Durable and corrosion-resistant construction
- Excellent alignment even under misalignment conditions
- Easy installation and low maintenance requirements
-
Popular products
-
-
-
-
-
-
-
-
1-2 weeks delivery time$ 108.44 -
-
1-2 weeks delivery time$ 14.82