Vetus UNIFLEX Flexible Marine Propeller Shaft Couplings Type 13 & 16 Ø20–40 mm

Name: Vetus UNIFLEX Flexible Marine Propeller Shaft Couplings Type 13 & 16 Ø20–40 mm
SKU: Vetus UNIFL1320

SKU: Vetus UNIFL1320

ID 1415625

$ 643.20

1-2 weeks delivery time

Type:

Uniflex 13
Uniflex 16

Diameter, mm:

Vetus UNIFLEX Flexible Propeller Shaft Couplings feature a conical clamping hub for concentric shaft alignment and permit up to 2° misalignment. Available in Type 13 for Ø20–30 mm shafts with a 4" gearbox connection and Type 16 for Ø30–40 mm shafts with a 5" connection. Designed for marine propulsion systems with self-aligning shaft bearings or flexible engine mounts. Not suitable for V-drives.

Description
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Vetus UNIFLEX Flexible Marine Propeller Shaft Couplings Type 13 & 16 Ø20–40 mm

Vetus UNIFLEX flexible couplings are designed to connect marine gearboxes to propeller shafts while allowing limited angular misalignment. The special conical clamping hub centres the propeller shaft on the gearbox flange, providing accurate and concentric installation.

UNIFLEX couplings are particularly suitable for propulsion installations with self-aligning propeller shaft bearings or engines mounted on flexible supports. The construction is secured against both axial and radial shearing.

Key Features

Manufacturer: Vetus
Series: UNIFLEX
Product Type: Flexible Marine Propeller Shaft Coupling
Available Types: Type 13 and Type 16
Shaft Diameters: 20, 25, 30, 35 and 40 mm
Hub: Conical Clamping Hub
Shaft Bore: Cylindrical
Maximum Angular Misalignment: 2°
Maximum Shaft Speed at 2° Misalignment: 1500 rpm
Shear Protection: Axial and Radial
Gearbox Connections: 4" (Type 13) and 5" (Type 16)
V-Drive Compatibility: Not Suitable

Conical Clamping Hub and Shaft Alignment

The UNIFLEX coupling uses a conical clamping hub to centre the propeller shaft accurately on the gearbox flange. This arrangement allows a maximum angular misalignment of 2° while maintaining a flexible connection between the engine and shaft assembly.

When operating with the maximum permitted misalignment of 2°, the shaft speed must not exceed 1500 rpm.

UNIFLEX Type 13 and Type 16

The UNIFLEX range includes two coupling sizes with different shaft bore options, gearbox connections and permissible power ratings.

Type 13: Available for shaft diameters of 20, 25 and 30 mm. Designed with a 4" gearbox connection and an overall diameter of 130 mm.
Type 16: Available for shaft diameters of 30, 35 and 40 mm. Designed with a 5" gearbox connection and an overall diameter of 199 mm.

Available Models and Dimensions

Article	Type	Shaft Ød	Overall ØD	Length L	Weight
UNIFL1320	13	20 mm	130 mm	98 mm	2.4 kg
UNIFL1325	13	25 mm	130 mm	98 mm	2.4 kg
UNIFL1330	13	30 mm	130 mm	98 mm	2.4 kg
UNIFL1630	16	30 mm	199 mm	131 mm	6.9 kg
UNIFL1635	16	35 mm	199 mm	131 mm	6.9 kg
UNIFL1640	16	40 mm	199 mm	131 mm	6.9 kg

Power Transmission Ratings

The permissible transmitted power depends on the coupling type, shaft rotational speed and operating duty classification.

Specification	Type 13	Type 16
DIN 6270 B - Pleasure Craft	2.6 kW / 100 shaft rpm (3.6 HP)	5.2 kW / 100 shaft rpm (7.1 HP)
DIN 6270 A - Commercial Craft	1.8 kW / 100 shaft rpm (2.5 HP)	3.6 kW / 100 shaft rpm (5 HP)
Example at 1500 Shaft RPM - DIN B	39 kW (53 HP)	79 kW (107 HP), as listed in the catalogue

Important: The power ratings at 1500 rpm are catalogue examples for pleasure craft under DIN 6270 B. Actual coupling selection must account for shaft speed, application and permitted operating conditions.

Gearbox Compatibility

UNIFLEX couplings are available with 4" or 5" connections for marine gearboxes, including the following manufacturers:

ZF-Hurth
Velvet
Technodrive
PRM

Other gearbox makes may also be accommodated where the flange dimensions and mounting configuration are compatible.

Technical Specifications

Product	Flexible Propeller Shaft Coupling
Manufacturer	Vetus
Series	UNIFLEX
Types	13 / 16
Shaft Bore Diameters	20 / 25 / 30 / 35 / 40 mm
Gearbox Flange Connection	4" / 5"
Overall Diameters	130 / 199 mm
Overall Lengths	98 / 131 mm
Weight	2.4 / 6.9 kg
Maximum Misalignment	2°
Maximum Shaft Speed at 2°	1500 rpm
Hub Construction	Conical Clamping Hub
V-Drive Compatibility	Not Suitable

Model Selection

Select the appropriate UNIFLEX coupling according to the propeller shaft diameter, gearbox flange connection and power transmission requirements.

For 30 mm shafts, both Type 13 and Type 16 are available. These models differ in overall dimensions, flange connection and permissible power ratings, so the correct type must be selected according to the specific propulsion installation.

UNIFLEX couplings are not suitable for V-drive installations.