Centa Centaflex AM Flexible Marine Propeller Shaft Coupling AM-12 to AM-200

Name: Centa Centaflex AM Flexible Marine Propeller Shaft Coupling AM-12 to AM-200
SKU: ALP 9088011

SKU: ALP 9088011

ID 1416254

$ 1,346.27

1-2 weeks delivery time

Type:

AM-30
AM-50
AM-80
AM-140
AM-200
AM-12
AM-22
AM-28

Diameter, mm:

82.5
108
82.5 / 108

Size:

Centa Centaflex AM flexible marine couplings provide vibration damping, elastic torque transmission and electrical isolation between marine gearboxes and propeller shafts. The range includes AM-12 to AM-200 models with different flange configurations and shaft connection dimensions. AM-30 to AM-200 models offer pleasure craft torque ratings from 625 to 3000 Nm, maximum speeds from 3000 to 4000 RPM and angular misalignment allowances of 2° to 3°. Matching shaft clamping connections must be selected according to the installation.

Description
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Centa Centaflex AM Flexible Marine Propeller Shaft Coupling AM-12 to AM-200

The Centa Centaflex AM Flexible Marine Propeller Shaft Coupling is designed for elastic torque transmission between marine gearboxes and propeller shafts. The coupling uses a substantial rubber element to absorb vibrations and reduce the transmission of noise and loads through the propulsion system.

The Centaflex AM series incorporates mechanical fail-safe protection, maintaining power transmission even if the rubber element completely fails. Its electrically insulating construction also provides protection against electrolysis.

The range includes AM-12, AM-22, AM-28, AM-30, AM-50, AM-80, AM-140 and AM-200 configurations with different mounting dimensions, shaft connection ranges and torque capacities.

Key Features

Elastic torque transmission: Rubber element absorbs vibration between the gearbox and propeller shaft.
Noise reduction: Stated reduction of approximately 5 dB(A).
Mechanical fail-safe protection: Maintains power transmission in the event of complete rubber element failure.
Electrical isolation: Helps protect the propulsion system against electrolysis.
Different torque capacities: Models available for different commercial and pleasure craft requirements.
Angular misalignment: Up to 3° for AM-30 and 2° for AM-50 through AM-200.
Multiple mounting configurations: Different flange sizes, bolt circle dimensions and mounting patterns.
Shaft connection: Clamping connection selected according to the propeller shaft diameter.

General Technical Specifications

Parameter	Specification
Manufacturer	Centa
Product Series	Centaflex AM
Product Type	Flexible Marine Propeller Shaft Coupling
Models	AM-12, AM-22, AM-28, AM-30, AM-50, AM-80, AM-140, AM-200
Torque Transmission	Elastic Rubber Coupling
Noise Reduction	Approximately 5 dB(A)
Mechanical Fail-Safe Protection	Yes
Electrical Isolation	Yes
Application	Marine Gearbox to Propeller Shaft Connection

Torque Ratings and Operating Limits

The following performance specifications apply to the AM-30 through AM-200 models.

Model	Maximum RPM	Commercial Torque (Nm)	Pleasure Craft Torque (Nm)	Maximum Angular Misalignment
AM-30	4000	350	625	3°
AM-50	4000	500	870	2°
AM-80	4000	700	1125	2°
AM-140	3600	1200	1875	2°
AM-200	3000	2000	3000	2°

Available Models and Mounting Dimensions

Dimensions A, B, Da, Tk, D, L1 and N1 are specified in millimetres. Z indicates the mounting hole arrangement. The listed shaft diameter range refers to the propeller shaft connection, while D is a flange centering dimension.

Article	Model	Flange	A	B	Da	Tk	Z	D
9088004	AM-12	1.4	99	51	120	82.5	4 × 90°	63.5
9088005	AM-22	1.0	99	41	150	82.5 / 108	4 × 90°	63.5
9088006	AM-28	1.0	102	40	170	82.5 / 108	4 × 90°	63.5
9088011	AM-30	1.0	125	51	200	82.5 / 108	4 × 90°	63.5
9088012	AM-50	1.2	125	51	200	108	8 × 45°	63.5
9088013/12	AM-80	1.2	125	44	205	108	8 × 45°	63.5
9088014	AM-140	1.2	138	48	260	108	8 × 45°	63.5
9088015	AM-200	1.2	162	55	300	108	8 × 45°	63.5

Propeller Shaft Connections and Additional Dimensions

Article	Shaft Ø Min (mm)	Shaft Ø Max (mm)	L1 (mm)	N1 (mm)	TA1 + TA3 (Nm)	TA2 (Nm)	Weight (kg)
9088004	20	38.1	57	75	50	23	3.9
9088005	20	38.1	57	80	85	23	5.5
9088006	20	40	55	85	140	45	7.3
9088011	25	50	70	100	220	79	10.6
9088012	25	50	70	100	220	79	10.8
9088013/12	25	50	70	100	220	79	11.3
9088014	35	60	83	125	500	117	21.4
9088015	40	80	90	145	500	79	32.5

Additional AM-80 Configuration

Article 9088013 is identified as the AM-80 1.0 configuration. The supplied product information lists a centering diameter D of 63.5 mm, bolt circle dimensions of 82.5 and 108 mm, and a 4 × 90° mounting pattern. The detailed dimensional table above identifies article 9088013/12 as the AM-80 1.2 configuration with a different mounting arrangement.

These configurations should not be treated as interchangeable without verification of their mounting dimensions.

Clamping Hub Selection

The Centaflex AM coupling must be configured with a clamping connection suitable for the required propeller shaft diameter.

For the AM-30, the clamping hub is identified by the 9088011Kxx article format, where the suffix corresponds to the shaft diameter.

For example, a Technodrive installation with a 35 mm propeller shaft requires 9088011 (AM-30 coupling) and 9088011K35 (shaft clamping hub).

Selection and Installation

When selecting a Centaflex AM coupling, verify the following parameters:

Model: Required torque rating and maximum RPM.
Flange Configuration: Type 1.0, 1.2 or 1.4, according to the selected model.
D: Flange centering diameter.
Tk: Bolt circle diameter.
Z: Mounting hole arrangement.
Propeller Shaft Diameter: Required clamping hub bore.
TA1, TA2 and TA3: Specified tightening torques for the corresponding fasteners.

When ordering, specify the gearbox brand and model, flange hole pattern, centering diameter and propeller shaft diameter to select the appropriate coupling configuration.