Centa Centaflex M-127 Flexible Propeller Shaft Coupling for Marine Gearboxes up to 250 Nm

Name: Centa Centaflex M-127 Flexible Propeller Shaft Coupling for Marine Gearboxes up to 250 Nm
SKU: ALP 9088001

SKU: ALP 9088001

ID 1416238

$ 474.72

1-2 weeks delivery time

Type:

K1.4 – Technodrive / ZF / HBW
K1.1 – Paragon ES40
K2.2 – Yanmar / Kanzaki
K3.2 – Volvo MS Series
K3.3 – ZF-BW7 / Bukh
K3.4 – Farymann
K3.7 – ZF-BW6
K3.10 – Watermota

Diameter, mm:

38.1
42
45
47
50
60
63.5
66.65

Size:

62
66.7
74.5
75
78
80
82.5

Centa Centaflex M-127 flexible propeller shaft couplings provide vibration damping, flexible torque transmission and electrical isolation in marine propulsion systems. Rated for a maximum torque of 175 Nm in commercial applications and 250 Nm in pleasure craft, with a maximum speed of 4500 RPM and angular misalignment of 2°. Available in eight mounting configurations for selected marine gearboxes, with separate clamping hubs for different propeller shaft diameters.

Description
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Centa Centaflex M-127 Flexible Propeller Shaft Coupling for Marine Gearboxes up to 250 Nm

The Centa Centaflex M-127 Flexible Propeller Shaft Coupling is an elastic coupling designed to connect marine gearbox output flanges to propeller shafts. Its flexible rubber element absorbs vibrations between the propeller shaft and gearbox, helping to provide smoother transmission of torque and thrust loads.

The large rubber volume contributes to quieter propulsion operation, with a stated noise reduction of approximately 5 dB(A). The coupling also incorporates a mechanical safety feature that maintains power transmission even if the rubber element completely fails.

The Centaflex M-127 coupling provides electrical isolation between connected components, offering protection against electrolysis. It is designed for a maximum rotational speed of 4500 RPM and accommodates angular misalignment up to 2°.

Key Features

Flexible rubber element: Absorbs vibrations between the propeller shaft and marine gearbox.
Torque transmission: Maximum 175 Nm for commercial applications and 250 Nm for pleasure craft.
Maximum rotational speed: 4500 RPM.
Angular misalignment: Up to 2°.
Noise reduction: Approximately 5 dB(A).
Mechanical safety connection: Maintains torque transmission in the event of complete rubber element failure.
Electrical isolation: Helps protect against electrolysis.
Clamping hub connection: Shaft connection using a separate cylindrical shaft clamping hub.
Multiple configurations: Eight mounting variants for different marine gearbox output flanges.

General Technical Specifications

Parameter	Specification
Manufacturer	Centa
Product Series	Centaflex M-127
Product Type	Flexible Marine Propeller Shaft Coupling
Maximum Rotational Speed	4500 RPM
Maximum Torque – Commercial Use	175 Nm
Maximum Torque – Pleasure Craft	250 Nm
Maximum Angular Misalignment	2°
Noise Reduction	Approximately 5 dB(A)
Electrical Isolation	Yes
Mechanical Safety Connection	Yes
Shaft Connection	Separate Clamping Hub

Available Models and Mounting Dimensions

The Centaflex M-127 is available in eight gearbox-specific mounting configurations. Dimensions D and Tk are specified in millimetres. M indicates the mounting thread, Z describes the mounting hole arrangement, and TA indicates the tightening torque.

Article Number	Model	D (mm)	M	Tk (mm)	Z	TA (Nm)
9088001	M-127-K1.4	63.5	M10	82.5	4 × 90°	45
9088001/11	M-127-K1.1	66.65	M10	82.5	4 × 90°	45
9088001YANMAR	M-127-K2.2	50	M10	78	4 × 90°	45
9088001/32	M-127-K3.2	60	M10	80	4 × 90°	45
9088001BUKH	M-127-K3.3	47	M8	74.5	4 × 90°	34
9088001/34	M-127-K3.4	45	M10	75	4 × 90°	45
9088001/37	M-127-K3.7	42	M6	62	6 × 60°	10
9088001/310	M-127-K3.10	38.1	M8	66.7	3 × 120°	23

Gearbox Compatibility

Article Number	Compatible Gearboxes and Flanges
9088001	4" flange, HBW, SOM, Velvet, ZF-BW7-A+C, BW12, Technodrive
9088001/11	Paragon ES40; gearbox flange must be bored to Ø10.5 mm
9088001YANMAR	Kanzaki KC30, KC100; Yanmar 1GM10, 2GM30, 3GM30, 3HM, KM2, KM3P, KM35P
9088001/32	Volvo MS2, MS10, MS15, MS25; additional adapter 9088090 required
9088001BUKH	ZF-BW7-Bukh
9088001/34	Farymann 15W, 18W, 32W
9088001/37	ZF-BW6 with 10 mm adapter; overall length 104 mm or 99 mm
9088001/310	Watermota

Propeller Shaft Clamping Hubs

The Centaflex M-127 coupling is mounted to the propeller shaft using a separate clamping hub. The hub must be selected according to the required shaft diameter.

Standard clamping hub bore sizes:

20 mm
25 mm
30 mm
35 mm
1"
1 1/2"

The corresponding clamping hub is ordered under the 9088001Kxx article number format, where the suffix identifies the required shaft diameter.

For example, a Centaflex M-127 coupling for a Technodrive gearbox with a 25 mm propeller shaft requires coupling article 9088001 and clamping hub 9088001K25.

Installation and Selection

The Centaflex M-127 coupling should be selected according to the gearbox type, output flange dimensions and propeller shaft diameter.

Important mounting parameters include:

D: Centering diameter in mm
M: Mounting thread size
Tk: Bolt circle diameter in mm
Z: Mounting hole quantity and angular arrangement
TA: Tightening torque in Nm
Shaft Diameter: Required bore size of the separate clamping hub

The coupling's rated torque must be suitable for the gearbox output torque. The selected mounting configuration must match the gearbox output flange.

When ordering, specify the gearbox brand and model, output flange dimensions, mounting hole pattern and propeller shaft diameter.