+357 25 123 645 Request a call

Main-Catalog-Boat Mechanics & Marine Systems-Propeller Shaft & Stern Gear-Allpa Steel Clamp Half-Coupling with Centering Ring for Ø25–60 mm Propeller Shafts

Allpa Steel Clamp Half-Coupling with Centering Ring for Ø25–60 mm Propeller Shafts

Name: Allpa Steel Clamp Half-Coupling with Centering Ring for Ø25–60 mm Propeller Shafts
SKU: ALP 522125

SKU: ALP 522125

ID 1416636

$ 215.28

1-2 weeks delivery time

Shaft Diameter:

Item:

Center 50/Pitch 78/A 85/Yanmar
Center 50/Pitch 78/A 70/Yanmar
Center 60/Pitch 80/A 83/Volvo
Center 60/Pitch 80/A 70/Volvo
Center 63.5/Pitch 82.5/A 83/4"
Center 63.5/Pitch 82.5/A 68/4"
Center 50/Pitch 78/A 107/Yanmar
Center 60/Pitch 80/A 106/Volvo
Center 60/Pitch 80/A 83.5/Volvo
Center 63.5/Pitch 108/A 68/5"
Center 63.5/Pitch 82.5/A 106/4"
Center 65/Pitch 100/A 107/Yanmar
Center 63.5/Pitch 108/A 109/5"
Center 63.5/Pitch 108/A 93/5"
Center 63.5/Pitch 82.5/A 107/4"
Center 63.5/Pitch 82.5/A 120/4"
Center 65/Pitch 100/A 109/Yanmar
Center 65/Pitch 100/G 127/Yanmar
Center 63.5/Pitch 108/A 130/5"
Center 65/Pitch 100/G 120/Yanmar
Center 63.5/Pitch 108/A 101/5"
Center 76.2/Pitch 120.65/A 166/6-Hole

Allpa steel clamp half-coupling with centering ring for marine propeller shaft connections, available for shaft diameters of Ø25, 30, 35, 40, 45 and 60 mm. Features a split clamping hub and a mounting flange with model-specific centering diameter, bolt pitch circle, fixing hole diameter and axial dimensions. Includes 4" and 5" reference flange configurations, Yanmar and Volvo reference versions, and a six-hole configuration for Ø60 mm shafts. Centering diameters range from Ø50 to Ø76.2 mm, while bolt pitch circle diameters range from Ø78 to Ø120.65 mm. Select the correct version according to shaft diameter, centering dimensions, bolt pattern and mating flange compatibility.

Description
Ask a Question

Allpa Steel Clamp Half-Coupling with Centering Ring for Ø25–60 mm Propeller Shafts

The Allpa Steel Clamp Half-Coupling with Centering Ring is a marine propulsion shaft coupling component manufactured from steel. It combines a split clamping hub, a mounting flange and a centering feature for connection to a corresponding mating flange.

The range includes configurations for propeller shafts with diameters of 25, 30, 35, 40, 45 and 60 mm. Different centering diameters, bolt pitch circles, mounting hole sizes and axial dimensions are available to suit the required coupling arrangement.

The series includes standard 4" and 5" reference configurations, Yanmar and Volvo reference versions, and a six-hole flange configuration for a 60 mm shaft.

Key Features

Steel construction: Half-couplings manufactured from steel.
Split clamping hub: Shaft attachment using a clamping arrangement.
Centering ring: Integrated centering feature for the mating flange connection.
Flanged connection: Mounting interface with model-specific bolt patterns.
Available shaft sizes: Ø25, Ø30, Ø35, Ø40, Ø45 and Ø60 mm.
Multiple centering diameters: Ø50, Ø60, Ø63.5, Ø65 and Ø76.2 mm.
Multiple bolt pitch circles: Ø78, Ø80, Ø82.5, Ø100, Ø108 and Ø120.65 mm.
Reference configurations: 4", 5", Yanmar, Volvo and six-hole versions.
Model-specific dimensions: Different hub lengths, flange diameters, hole diameters and centering geometries.

Technical Specifications

Parameter	Specification
Brand	Allpa
Product Type	Steel Clamp Half-Coupling with Centering Ring
Application	Marine Propeller Shaft Coupling Systems
Material	Steel
Shaft Attachment	Split Clamping Hub
Flange Type	Flanged Connection with Centering Ring
Propeller Shaft Diameter (D)	Ø25–60 mm, Depending on Model
Overall Axial Dimension (A)	68–166 mm
Axial Dimension (B)	65–166 mm
Dimension C	-5 to 4 mm, Depending on Model
Dimension E	8.5–16.2 mm
Centering Diameter (F)	Ø50–76.2 mm
Flange Diameter (G)	Ø100–146 mm
Mounting Hole Diameter (H)	Ø10.5–17 mm
Bolt Pitch Circle Diameter (I)	Ø78–120.65 mm
Reference Types	4", 5", Yanmar, Volvo, 6-Hole
Available Configurations	27

Available Steel Models and Dimensions

The following dimensions correspond to the A, B, C, D, E, F, G, H and I designations in the technical drawing. All dimensions are expressed in millimetres except the reference designation.

Article	Shaft Ø D	A	B	C	E	Center Ø F	Flange Ø G	Hole Ø H	Pitch Ø I	Ref.
518007/30	30	68	65	3	11	63.5	127	11.5	108	5"
518045	45	101	98	3	12.5	63.5	132	12	108	5"
518009	25	68	65	3	10.5	63.5	102	10.5	82.5	4"
5180095	30	68	65	3	10.5	63.5	102	10.5	82.5	4"
518011	35	93	90	3	11.5	63.5	127	11.5	108	5"
5180115	35	120	117	3	11.8	63.5	102	10.5	82.5	4"
518012	40	93	90	3	12	63.5	127	11.5	108	5"
5180125	40	120	117	3	11.8	63.5	102	10.5	82.5	4"
518020	60	166	166	-5	16.2	76.2	146	17	120.65	6-Hole
518009Y	25	70	67	3	10.5	50	100	10.5	78	Yanmar
518010Y	30	70	67	3	10.5	50	100	10.5	78	Yanmar
518011Y	35	93	90	3	11.8	65	127	12.5	100	Yanmar
518012Y	40	93	90	3	11.8	65	127	12.5	100	Yanmar
518009V	25	70	70	-3.5	10.5	60	100	10.5	80	Volvo
518010V	30	83.5	83.5	-3.5	10.5	60	100	10.5	80	Volvo
522125	25	85	82	3	8.5	50	100	10.5	78	Yanmar
522130	30	107	105	2	9	50	100	10.5	78	Yanmar
522230	30	107	105	2	9	65	120	10.5	100	Yanmar
522235	35	109	105	4	10	65	120	10.5	100	Yanmar
522240	40	93	90	3	11.8	65	120	10.5	100	Yanmar
522225	25	83	81	2	8.5	63.5	102	10.5	82.5	4"
522330	30	106	104	2	9	63.5	102	10.5	82.5	4"
522335	35	107	105	2	10	63.5	102	10.5	82.5	4"
522435	35	109	105	4	10	63.5	127	11.5	108	5"
522440	40	130	126	4	11	63.5	127	11.5	108	5"
522329	25	83	83	-4	10	60	102	10.5	80	Volvo
522331	30	106	106	-4	11	60	102	10.5	80	Volvo

Steel Clamping Hub

The half-coupling features a split steel clamping hub for attachment to the propeller shaft. Each model has a specified shaft bore diameter and axial dimensions.

Different hub lengths are available for the same shaft diameter. For example, 25 mm shaft configurations include models with dimension A of 68, 70, 83 and 85 mm.

Centering Ring and Flange Alignment

The centering ring is part of the interface between the half-coupling and its corresponding mating flange. The centering diameter is identified as dimension F in the technical drawing.

The available configurations include the following centering diameters:

Ø50 mm
Ø60 mm
Ø63.5 mm
Ø65 mm
Ø76.2 mm

The mating flange must have a compatible centering arrangement.

Mounting Flange and Bolt Pattern

The steel half-couplings have different flange configurations, including 4" and 5" reference sizes and Yanmar and Volvo reference versions.

Dimensions G, H and I identify the flange outside diameter, fixing hole diameter and bolt pitch circle diameter, respectively.

The range includes bolt pitch circles of Ø78, Ø80, Ø82.5, Ø100, Ø108 and Ø120.65 mm. The 60 mm shaft model, article 518020, is listed with a six-hole mounting pattern and Ø17 mm fixing holes.

Yanmar and Volvo Reference Versions

Selected half-couplings carry Yanmar or Volvo reference designations. These variants have specific centering diameters, bolt patterns and axial dimensions.

For Yanmar reference configurations, centering diameters include Ø50 and Ø65 mm, while the Volvo reference configurations use a Ø60 mm centering diameter.

The reference designation does not replace dimensional verification of the actual mating flange.

Axial Dimensions and Centering Geometry

The model-specific axial dimensions A, B, C and E must be checked alongside the flange dimensions.

Dimension C includes positive and negative values depending on the configuration. These values are retained as specified in the dimensional data and should be interpreted together with the technical drawing.

Selection and Compatibility

Select the correct Allpa steel clamp half-coupling by checking:

Shaft Diameter (D): Must match the propeller shaft.
Centering Diameter (F): Must match the corresponding mating flange.
Flange Diameter (G): Check the outside flange dimension.
Fixing Hole Diameter (H): Check the required mounting hole size.
Bolt Pitch Circle (I): Verify the mounting hole arrangement.
Axial Dimensions (A, B, C and E): Confirm compatibility with the existing installation.
Reference Configuration: Check the specified 4", 5", Yanmar, Volvo or six-hole arrangement.

Different half-couplings may share the same shaft diameter and bolt pitch circle while having different axial lengths or centering dimensions. Verify the complete dimensional configuration before ordering.