Allpa AISI 316 Stainless Steel Propeller Shaft Keys for Ø20–60 mm Shafts

Name: Allpa AISI 316 Stainless Steel Propeller Shaft Keys for Ø20–60 mm Shafts
SKU: ALP 31100100

SKU: ALP 31100100

ID 1416667

$ 18

1-2 weeks delivery time

Shaft Diameter:

20
25
30
35
40
55
60
45/50

Item:

6x6x30
6x6x40
8x7x55
10x8x70
12x8x82
14x9x88
16x10x100
18x11x118

Allpa propeller shaft keys manufactured from AISI 316 stainless steel for marine shaft and coupling connections. Available for propeller shaft diameters of Ø20, 25, 30, 35, 40, 45, 50, 55 and 60 mm. Rectangular keys are supplied in model-specific dimensions ranging from 6 × 6 × 30 mm to 18 × 11 × 118 mm (width × height × length). The Ø45 and Ø50 mm shaft versions share the same 14 × 9 × 88 mm key and article number. Designed for keyed mechanical connections in marine propeller shaft assemblies.

Description
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Allpa AISI 316 Stainless Steel Propeller Shaft Keys for Ø20–60 mm Shafts

The Allpa AISI 316 Stainless Steel Propeller Shaft Key is a mechanical connection component designed for marine propeller shaft assemblies. Manufactured from 316 stainless steel, it fits into a corresponding keyway to provide a keyed connection between the shaft and a compatible mating component.

These rectangular shaft keys are available in different widths, heights and lengths to match the specified propeller shaft diameter and keyway dimensions.

The range covers propeller shafts from 20 to 60 mm in diameter, with eight unique article numbers corresponding to nine listed shaft sizes.

Key Features

AISI 316 stainless steel: Material specified for the shaft key range.
Rectangular key design: Defined by width, height and length.
Marine application: Suitable for keyed propeller shaft connections.
Metric dimensions: All key measurements are specified in millimetres.
Multiple shaft sizes: Listed for Ø20, Ø25, Ø30, Ø35, Ø40, Ø45, Ø50, Ø55 and Ø60 mm shafts.
Model-specific key dimensions: Widths from 6 to 18 mm, heights from 6 to 11 mm and lengths from 30 to 118 mm.
Shared size for Ø45 and Ø50 mm shafts: Both use a 14 × 9 × 88 mm key.

Technical Specifications

Parameter	Specification
Brand	Allpa
Product Type	Propeller Shaft Key
Material	AISI 316 Stainless Steel
Application	Marine Propeller Shaft and Coupling Connections
Key Type	Rectangular
Compatible Shaft Diameters	Ø20–60 mm, Depending on Model
Key Width	6–18 mm
Key Height	6–11 mm
Key Length	30–118 mm
Dimension Format	Width × Height × Length
Measurement Unit	mm
Unique Article Numbers	8

Available Models and Dimensions

The following table shows the compatible propeller shaft diameter and corresponding key dimensions. All dimensions are expressed in millimetres.

Article Number	Shaft Diameter	Key Width	Key Height	Key Length	Key Dimensions (W × H × L)
31100100	Ø20 mm	6 mm	6 mm	30 mm	6 × 6 × 30 mm
31100700	Ø25 mm	6 mm	6 mm	40 mm	6 × 6 × 40 mm
31100800	Ø30 mm	8 mm	7 mm	55 mm	8 × 7 × 55 mm
31100900	Ø35 mm	10 mm	8 mm	70 mm	10 × 8 × 70 mm
31101000	Ø40 mm	12 mm	8 mm	82 mm	12 × 8 × 82 mm
31101100	Ø45 mm	14 mm	9 mm	88 mm	14 × 9 × 88 mm
31101100	Ø50 mm	14 mm	9 mm	88 mm	14 × 9 × 88 mm
31101400	Ø55 mm	16 mm	10 mm	100 mm	16 × 10 × 100 mm
31101600	Ø60 mm	18 mm	11 mm	118 mm	18 × 11 × 118 mm

AISI 316 Stainless Steel Construction

The shaft keys are manufactured from AISI 316 stainless steel. They are intended for keyed mechanical connections in marine propulsion shaft assemblies.

The material and dimensions of the key should be compatible with the propeller shaft and the corresponding mating component.

Rectangular Shaft Key Design

Each key is specified by three dimensions:

Width (B): The transverse width of the key.
Height (H): The vertical dimension of the key section.
Length (L): The overall longitudinal length of the key.

The dimensions are expressed in the order width × height × length.

Application in Propeller Shaft Assemblies

A shaft key is used with matching keyways in a propeller shaft and a compatible mating component. The keyed connection provides a mechanical interface for transmitting rotational torque.

The key must match the dimensions of the shaft keyway and the corresponding connected component.

Selection and Compatibility

Select the correct Allpa stainless steel shaft key according to the propeller shaft diameter and the required key dimensions.

Ø20 mm shaft: 6 × 6 × 30 mm key.
Ø25 mm shaft: 6 × 6 × 40 mm key.
Ø30 mm shaft: 8 × 7 × 55 mm key.
Ø35 mm shaft: 10 × 8 × 70 mm key.
Ø40 mm shaft: 12 × 8 × 82 mm key.
Ø45 and Ø50 mm shafts: 14 × 9 × 88 mm key.
Ø55 mm shaft: 16 × 10 × 100 mm key.
Ø60 mm shaft: 18 × 11 × 118 mm key.

Before ordering, verify the shaft diameter, keyway width, keyway depth and required key length against the existing propeller shaft assembly.