Vetus ZWBH Self-Aligning Inner Bearing with Triple Lip Propeller Shaft Seal Ø25–40 mm

Name: Vetus ZWBH Self-Aligning Inner Bearing with Triple Lip Propeller Shaft Seal Ø25–40 mm
SKU: Vetus ZWBH25

SKU: Vetus ZWBH25

ID 1415524

$ 142.11

1-2 weeks delivery time

Shaft Diameter:

Vetus ZWBH is a flexible self-aligning inner bearing with an integrated triple lip shaft seal for water-lubricated stern gear systems. Its monoblock construction features a 3/8" × 10 mm hose connection for water injection, threaded connection for an optional valve, and oil- and grease-resistant sealing material. Available for Ø25–40 mm propeller shafts, with operating temperatures from -15°C to +85°C. Supplied with two stainless steel hose clamps and grease.

Description
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Vetus ZWBH Self-Aligning Inner Bearing with Triple Lip Propeller Shaft Seal Ø25–40 mm

The Vetus ZWBH Self-Aligning Inner Bearing combines a flexible inner bearing and a triple lip propeller shaft seal in a monoblock assembly designed for water-lubricated marine stern gear systems.

Based on the Vetus ZWB shaft seal design, the ZWBH series incorporates an additional sealing lip, providing three sealing lips for extra security against water leakage. Its flexible construction is designed for use with Vetus bronze, steel and GRP stern tubes.

Key Features

Triple lip shaft seal: Three sealing lips provide additional security against water leakage.
Self-aligning inner bearing: Flexible construction for water-lubricated stern gear systems.
Monoblock design: Combined flexible inner bearing and shaft sealing assembly.
Water injection connection: Separate 3/8" × 10 mm hose pillar.
Threaded connection: Allows a valve to be fitted to the assembly.
Oil- and grease-resistant: Sealing construction designed for marine stern gear applications.
Temperature range: -15°C to +85°C.
Stern tube compatibility: Vetus bronze, steel and GRP stern tubes.
Available shaft diameters: 25, 30, 35 and 40 mm.

Technical Specifications

Parameter	Specification
Manufacturer	Vetus
Product Series	ZWBH
Product Type	Self-Aligning Inner Bearing with Shaft Seal
Application	Water-Lubricated Marine Stern Gear Systems
Seal Configuration	Triple Lip Seal
Construction	Flexible Monoblock
Material Properties	Oil- and Grease-Resistant
Water Injection Connection	3/8" × 10 mm Hose Pillar
Valve Connection	Threaded Connection
Operating Temperature	-15°C to +85°C
Compatible Stern Tube Materials	Vetus Bronze, Steel and GRP
Shaft Diameter Range	25–40 mm
Supplied Accessories	Two Stainless Steel Hose Clamps and Grease

Available Models and Dimensions

The dimensions H, L, D and d correspond to the manufacturer's technical drawing. All dimensions are in millimetres.

Vetus Part Number	Shaft Ø d (mm)	D (mm)	H (mm)	L (mm)
ZWBH25	25	43	93	138
ZWBH30	30	50	93	138
ZWBH35	35	55	83	145
ZWBH40	40	60	88	150

Water Lubrication and Maintenance

The ZWBH shaft seal is designed for use with water-lubricated stern gear. A separate hose pillar with a 3/8" × 10 mm connection is provided for water injection into the sealing system.

The manufacturer recommends annual lubrication with silicone grease to maintain the stern gear seal in optimal condition.

The ZWBH assembly is supplied with two stainless steel hose clamps and grease.

Selection and Installation

Select the appropriate ZWBH model according to the propeller shaft diameter (d) and the dimensions of the existing stern gear installation.

Verify dimensions D, H and L against the manufacturer's technical drawing. The ZWBH series is specified for Vetus bronze, steel and GRP stern tubes.

Important: The ZWBH range uses a triple lip sealing system and should not be confused with the Vetus ZWB dual lip seal series.