Shaft Coupling / Adapter for Agitator Head Assembly

Product Specifications

Technical details and manufacturing context for Shaft Coupling / Adapter

Definition

In the Agitator Head Assembly, the shaft coupling/adapter serves as a critical connection point between the drive motor shaft and the agitator shaft. Its primary function is to transmit torque from the motor to the agitator while compensating for axial, radial, and angular misalignments that may arise from manufacturing tolerances, thermal expansion, or operational vibrations. By accommodating these misalignments, the coupling helps ensure smooth operation and prevents excessive mechanical stress on the shafts and bearings.

The coupling/adapter is available in various configurations, including rigid and flexible designs, and can be manufactured from steel, stainless steel, or aluminum alloy. The choice of material depends on the application's requirements for strength, corrosion resistance, and weight. The coupling's bore diameter ranges from 10 to 100 mm, and its torque capacity spans from 50 to 5000 Nm, making it suitable for a wide range of industrial agitator applications. The maximum rotational speed is between 3000 and 8000 rpm, and the misalignment tolerance is 0.1 to 0.5 degrees/mm.

Key parameters to consider when selecting a coupling include bore diameter, torque capacity, maximum RPM, misalignment tolerance, material, surface treatment, operating temperature, torsional stiffness, weight, balance quality grade, and hub length. For example, the operating temperature range is -20 to 80°C, and the torsional stiffness ranges from 0.5 to 5 kN·m/rad. The balance quality grade is G6.3 per ISO 21940-11, and the hub length varies from 20 to 150 mm. Surface treatments such as black oxide or zinc plating are available for corrosion resistance.

It is essential to verify model-specific values and standards with the legal manufacturer or supplier before procurement, as the listed ranges are reference values and may not apply to every configuration. The coupling's performance must be confirmed for the specific agitator system to ensure reliable operation.

Working Principle

The coupling/adapter physically joins two shafts through mechanical fastening methods such as bolts, clamps, or keys, or through an interference fit. This creates a rigid or flexible connection that transmits rotational force from the drive motor to the agitator shaft. The design allows for slight movement to accommodate installation tolerances and operational vibrations, thereby reducing stress on the connected components. The coupling's ability to handle misalignment is critical for maintaining smooth operation and extending the service life of the equipment.

Common Materials

Steel, Stainless Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore DiameterRequired	10–100 mm	Inner diameter of the coupling/adapter that fits onto the shaft
Torque CapacityRequired	50–5000 Nm	Maximum torque the coupling/adapter can transmit
Maximum RPMRequired	3000–8000 rpm	Maximum rotational speed the coupling/adapter can handle
Misalignment ToleranceRequired	0.1–0.5 degrees/mm	Maximum angular and parallel misalignment the coupling can accommodate
Material	45# steel / 304 SS	Carbon steel standard; stainless for corrosionGB/T 699
Surface Treatment	Black oxide / zinc plating	Zinc for corrosion resistance
Operating Temperature	-20–80 °C	Elastomer limits high temp
Torsional Stiffness	0.5–5 kN·m/rad	Higher for precision positioning
Weight	0.5–20 kg	Depends on size and material
Balance Quality Grade	G6.3	Standard for general purposeISO 21940-11
Hub Length	20–150 mm	Affects clamping force

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Coupling Hub
Main body that connects to the shaft via keyway or clamp

Material: Steel or Stainless Steel
Fastening Bolts Part
Secures the coupling to the shaft and/or connects coupling halves

Material: Steel
Key Part
Prevents rotational slippage between shaft and coupling

Material: Steel
Flexible Element Part
Absorbs vibration and compensates for misalignment in flexible couplings

Material: Rubber, Polyurethane, or Metallic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Shaft Coupling / Adapter.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Agitator Head Assembly

View system integration details

Manufacturers of Shaft Coupling / Adapter

Manufacturer profiles associated with Shaft Coupling / Adapter.

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Frequently Asked Questions

What is the purpose of a shaft coupling/adapter in an agitator head assembly?

It connects the drive motor shaft to the agitator shaft, transmitting torque while compensating for axial, radial, and angular misalignments to ensure smooth operation and prevent mechanical stress.

What materials are available for this coupling/adapter?

Steel, stainless steel, and aluminum alloy are available. The choice depends on strength, corrosion resistance, and weight requirements.

What are the typical bore diameter and torque capacity ranges?

Bore diameter ranges from 10 to 100 mm, and torque capacity ranges from 50 to 5000 Nm. These are reference values; verify with the manufacturer for specific models.

How should I verify the suitability of a coupling for my application?

Check the coupling's parameters such as bore diameter, torque capacity, maximum RPM, misalignment tolerance, and operating temperature against your system requirements. Always confirm with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Not applicable (mechanical torque transmission component)
other spec:	Max torque: 10-5000 Nm depending on size, Max speed: 1000-10000 RPM, Misalignment compensation: Angular 1-3°, Parallel 0.5-2mm, Axial 1-5mm
temperature:	-40°C to +120°C (standard elastomer), up to +200°C with high-temp materials

Shaft Coupling / Adapter

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards