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Main-Catalog-Boat Mechanics & Marine Systems-Propeller Shaft & Stern Gear-Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings – Imperial Sizes

Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings – Imperial Sizes

Name: Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings – Imperial Sizes
SKU: Osculati-52.210.25

SKU: Osculati-52.210.25

ID 1415124

$ 65.52

1-2 weeks delivery time

Shaft Diameter:

1"
2"
2 1/4"
2 1/2"

Stern Tube Diameter:

1 1/2"
2 5/8"
3 1/4"
3"

Length, mm:

Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings are designed to support and guide rotating propeller shafts in marine stern tube and shaft support installations. Featuring a resin external housing and hydro-lubricating rubber lining, these cylindrical bearings provide a non-metallic mounting surface and a water-lubricated bearing surface for marine propulsion systems. The 52.210 series includes four configurations with imperial shaft diameters from 1" to 2 1/2" (25.4–63.5 mm), external bearing diameters from 1 1/2" to 3 1/4" (38.1–82.55 mm) and overall lengths from 100 to 250 mm. Both internal and external diameters are specified in inches, with corresponding metric dimensions provided for reference. Select the required bearing according to shaft diameter, external mounting diameter and overall length.

Description
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Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings 1"–2 1/2"

Osculati Resin Rubber Water Lubricated Propeller Shaft Cutless Bearings are designed for supporting and guiding rotating propeller shafts in marine propulsion systems. Each bearing combines a cylindrical resin outer housing with an internal hydro-lubricating rubber lining.

The 52.210 series includes four dimensional configurations with imperial shaft diameters from 1" to 2 1/2", external bearing diameters from 1 1/2" to 3 1/4" and overall lengths from 100 to 250 mm.

Resin External Housing

Each bearing features a resin outer frame that provides the external mounting surface for installation in the corresponding stern tube or shaft support assembly.

The resin housing surrounds the rubber bearing lining and provides a non-metallic external structure.

Hydro-Lubricating Rubber Lining

The internal bearing surface is manufactured from hydro-lubricating rubber, designed to support the rotating propeller shaft in a water-lubricated marine propulsion system.

Water lubrication supports shaft rotation and helps reduce friction between the shaft and bearing surface during operation.

Imperial Internal and External Diameters

The Osculati 52.210 bearing series uses imperial internal and external diameter dimensions. The manufacturer's technical catalogue also provides the corresponding metric values.

Overall bearing lengths are specified in millimetres.

Bearing Dimensions

The manufacturer's dimensional drawing identifies three measurements:

Ø A – Shaft Diameter: Internal bearing diameter corresponding to the propeller shaft.
Ø B – External Diameter: Outside diameter of the resin bearing housing.
C – Length: Overall bearing length.

Available Models and Dimensions

The following table lists all four configurations according to the Osculati technical catalogue.

Osculati Code	Shaft Ø A (inch)	Shaft Ø A (mm)	External Ø B (inch)	External Ø B (mm)	Length C (mm)
52.210.25	1"	25.4	1 1/2"	38.1	100
52.210.50	2"	50.8	2 5/8"	66.67	200
52.210.57	2 1/4"	57.16	3"	76.2	220
52.210.63	2 1/2"	63.5	3 1/4"	82.55	250

Available Shaft Diameters

Four versions are available for the following imperial propeller shaft diameters:

1" (25.4 mm).
2" (50.8 mm).
2 1/4" (57.16 mm).
2 1/2" (63.5 mm).

Key Features

Brand: Osculati.
Series: 52.210.
Product Type: Marine Propeller Shaft Cutless Bearing.
External Housing Material: Resin.
Internal Bearing Material: Hydro-Lubricating Rubber.
Lubrication: Water.
Shaft Diameter Range: 1"–2 1/2".
External Diameter Range: 1 1/2"–3 1/4".
Overall Length Range: 100–250 mm.
Available Configurations: 4.

Technical Specifications

Manufacturer	Osculati
Series	52.210
Product Type	Stern Tube Cutless Bearing
External Frame Material	Resin
Internal Lining Material	Hydro-Lubricating Rubber
Lubrication Type	Water Lubricated
Internal Diameter Ø A	1"–2 1/2"
External Diameter Ø B	1 1/2"–3 1/4"
Overall Length C	100–250 mm
Available Variants	4

Bearing Size Selection

Select the appropriate Osculati resin shell cutless bearing according to three dimensions:

Shaft (A): Internal bearing diameter corresponding to the propeller shaft, in inches.
Shaft Tube (B): External bearing diameter, in inches.
Length (C): Overall bearing length, in millimetres.

Use the complete combination of internal shaft diameter, external bearing diameter and length when selecting the correct bearing for the marine shaft installation.