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Main-Catalog-Boat Mechanics & Marine Systems-Propeller Shaft & Stern Gear-Allpa Neoprene Propeller Shaft Bearing with Brass Housing for 1"–4" Shafts – Imperial Sizes

Allpa Neoprene Propeller Shaft Bearing with Brass Housing for 1"–4" Shafts – Imperial Sizes

Name: Allpa Neoprene Propeller Shaft Bearing with Brass Housing for 1"–4" Shafts – Imperial Sizes
SKU: ALP 418001

SKU: ALP 418001

ID 1416607

$ 91.67

1-2 weeks delivery time

Shaft Diameter:

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

Stern Tube Diameter:

5 1/4"
1 1/2"
1 3/4"
1 5/8"
1 7/8"
2 3/8"
2 5/8"
2"
3 1/4"
3 3/4"
3"
4 1/2"
4"

Length, mm:

8"
10"
4"
4 1/2"
5"
5 1/2"
6"
7"
9"
11"
12"
14"
16"
8 1/2"
9 1/2"
13 1/2"
14 1/2"
15"

Allpa neoprene propeller shaft bearing with a brass outer housing for inboard marine propulsion systems. Features a neoprene inner bearing lining and a cylindrical brass casing for supporting rotating propeller shafts. Available for imperial shaft diameters from 1" to 4", with corresponding outer bearing diameters from 1 1/2" to 5 1/4" and overall lengths from 4" to 16". The range includes 19 configurations with model-specific shaft, housing and length dimensions for marine propeller shaft bearing installations.

Description
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Allpa Neoprene Propeller Shaft Bearing with Brass Housing for 1"–4" Shafts – Imperial Sizes

The Allpa Neoprene Propeller Shaft Bearing with Brass Housing is a cylindrical marine shaft bearing designed for inboard propulsion systems. It combines a neoprene inner bearing lining with a brass outer casing to provide bearing support for rotating propeller shafts.

The neoprene lining forms the internal bearing surface, while the brass housing provides the external cylindrical structure for installation within a compatible shaft bearing arrangement.

The imperial range includes 19 configurations for propeller shaft diameters from 1" to 4", with different outside diameters and lengths to match the required installation dimensions.

Key Features

Neoprene bearing lining: Internal bearing surface for the rotating propeller shaft.
Brass outer housing: Cylindrical metal casing surrounding the neoprene bearing lining.
Marine shaft bearing: Designed for propeller shaft support applications.
Imperial shaft sizes: Available for shaft diameters from 1" to 4".
Multiple outer diameters: Available from 1 1/2" to 5 1/4".
Model-specific lengths: Available from 4" to 16".
19 available configurations: Different combinations of shaft diameter, outer bearing diameter and length.

Technical Specifications

Parameter	Specification
Brand	Allpa
Product Type	Propeller Shaft Bearing Bush
Application	Inboard Marine Propeller Shaft Systems
Inner Bearing Material	Neoprene
Outer Housing Material	Brass
Bearing Design	Cylindrical Sleeve
Propeller Shaft Diameter	1"–4", Depending on Model
Outer Bearing Diameter	1 1/2"–5 1/4", Depending on Model
Bearing Length	4"–16", Depending on Model
Measurement System	Imperial (Inches)
Available Configurations	19

Available Models and Dimensions

The following table provides the propeller shaft diameter, outer bearing diameter and overall bearing length for each configuration. All dimensions are expressed in inches.

Article Number	Propeller Shaft Diameter	Outer Bearing Diameter	Length
418001	1"	1 1/2"	4"
418002	1 1/8"	1 5/8"	4 1/2"
418003	1 1/4"	1 3/4"	5"
418004	1 3/8"	1 7/8"	5 1/2"
418005	1 1/2"	2"	6"
418007	1 3/4"	2 3/8"	7"
418009	2"	2 5/8"	8"
418010	2 1/8"	3"	8 1/2"
418011	2 1/4"	3"	9"
418012	2 3/8"	3 1/4"	9 1/2"
418013	2 1/2"	3 1/4"	10"
418015	2 3/4"	3 3/4"	11"
418017	3"	4"	12"
418018	3 1/4"	4"	12"
418019	3 3/8"	4 1/2"	13 1/2"
418020	3 1/2"	4 1/2"	14"
418021	3 5/8"	4 1/2"	14 1/2"
418022	3 3/4"	4 1/2"	15"
418024	4"	5 1/4"	16"

Neoprene Bearing Lining

The bearing features a neoprene inner lining that forms the bearing surface for the rotating propeller shaft.

The internal diameter corresponds to the selected imperial shaft size, ranging from 1" to 4".

Brass Outer Housing

The cylindrical outer housing is manufactured from brass and surrounds the neoprene bearing lining.

The external diameter varies from 1 1/2" to 5 1/4", depending on the shaft diameter and selected article number.

Bearing Dimensions

Each bearing is identified by three principal dimensions:

Propeller Shaft Diameter: Nominal internal bearing size from 1" to 4".
Outer Bearing Diameter: Outside diameter of the brass housing from 1 1/2" to 5 1/4".
Overall Length: Axial bearing length from 4" to 16".

All three dimensions must be verified when selecting a replacement bearing.

Application

The Allpa neoprene propeller shaft bearing with brass housing is intended for inboard marine propulsion shaft support systems.

The cylindrical bearing is selected to match the propeller shaft diameter and the mounting dimensions of the existing bearing support arrangement.

Selection and Compatibility

Select the correct bearing according to the shaft diameter, outer housing diameter and overall length.

Some models share the same outer bearing diameter but differ in internal shaft diameter or length. Therefore, matching only the outside diameter is not sufficient for selecting the correct replacement.

Before ordering, verify the actual shaft diameter, required bearing outside diameter and available installation length against the existing installation.