FCL Elastic Sleeve Pin Coupling

Product Overview

Apex Coupling supplies FCL elastic sleeve pin couplings for selected motor-driven power transmission systems. Featuring a simple construction, lightweight design and replaceable elastic sleeves, the FCL coupling is designed to make installation and routine maintenance straightforward.

The coupling transfers torque through pins fitted with elastic sleeves. These sleeves provide a degree of flexibility and help accommodate limited relative displacement between connected shafts. Actual performance depends on the selected model, installation accuracy, operating load and working conditions.

FCL couplings are commonly considered for small- and medium-power transmission systems where the foundation is rigid, shaft alignment is accurate and impact loads are limited. Typical applications may include selected pumps, reducers, conveyors, compressors, hoists and textile machinery.

Apex Coupling offers FCL series sizes from FCL90 to FCL630, with non-standard customization available subject to technical review. Contact us with your required size, shaft dimensions and operating conditions to confirm a suitable configuration.

Key Features of FCL Couplings

• Simple construction: A straightforward design helps simplify installation and maintenance.

• Replaceable elastic sleeves: Worn sleeves can be replaced when compatible spare parts are available.

• Compact and lightweight design: Suitable for selected motor-driven transmission systems.

• Flexible connection: The elastic sleeves can accommodate limited relative displacement between connected shafts within the specified limits.

• Easy maintenance: The design supports inspection and replacement of elastic sleeves.

• Forward and reverse operation: Suitable for applications involving changing rotation direction when operating conditions remain within the coupling’s ratings.

• Material options: Standard material is listed as 45# steel; special materials may be available by request.

• OEM customization: Non-standard sizes and connection requirements can be reviewed against customer drawings.

FCL Coupling Technical Specifications

Important: The stated torque range covers the product series, not every individual model. The allowable torque, dimensions, bore sizes, speed limit and misalignment limits must be confirmed for the selected FCL model before use.

How an Elastic Sleeve Pin Coupling Works

An FCL elastic sleeve pin coupling connects two shafts using coupling flanges, pins and elastic sleeves. During operation, torque passes from one coupling half through the pin-and-sleeve connection to the other half.

The elastic sleeves provide some flexibility and can help accommodate limited relative displacement. They also make it possible to replace worn sleeves without necessarily replacing every coupling component, provided the remaining parts are in serviceable condition.

The coupling does not eliminate the need for shaft alignment. Excessive misalignment, overload or unsuitable operating conditions can increase wear and reduce service life.

Typical Applications

FCL elastic sleeve pin couplings may be considered for selected motor-driven transmission systems, including:

• Water pumps and other suitable pump drives

• Gear reducers

• Conveyors

• Compressors

• Hoists and winches

• Textile machinery

• General industrial transmission equipment

The coupling is best evaluated for applications with a rigid mounting base, good alignment and limited impact loading. It may not be suitable for every high-impact or vibration-sensitive duty.

Available FCL Models

The supplied model list includes:

FCL90, FCL100, FCL112, FCL125, FCL140, FCL160, FCL180, FCL200, FCL220, FCL224, FCL280, FCL315, FCL355, FCL400, FCL450, FCL560 and FCL630.

The appropriate size depends on the required torque, shaft diameter, installation space, speed and operating conditions. Please request the model-specific dimensional drawing and technical data before placing an order.

Material and Surface Treatment

The standard material is listed as 45# steel. Natural finish and blackening are listed as surface treatment options, while special materials may be available on request.

If your application requires corrosion resistance, a particular material grade or a specified surface treatment, include the requirement in your inquiry. Availability and suitability should be confirmed for the selected model.

How to Select the Right FCL Coupling

1. Determine the Required Torque

Provide the normal operating torque and any peak or starting loads. Select the coupling according to the verified rating for the individual model, not the series-wide torque range.

2. Confirm Shaft Dimensions

Provide both shaft diameters, required bore sizes, keyway details and any special mounting requirements.

3. Check Operating Speed

Share the normal and maximum operating speed. Confirm the allowable speed for the selected coupling and configuration.

4. Review Alignment and Mounting Conditions

The FCL design is intended for applications where the mounting base is rigid and shaft alignment is accurate. Confirm the allowable relative displacement from the manufacturer’s technical documentation.

5. Consider Temperature and Environment

The supplied information lists an operating temperature range of -20°C to +70°C. Confirm suitability if the equipment operates near the limits or is exposed to oil, moisture, chemicals or other environmental factors.

6. Confirm Maintenance Requirements

Inspect elastic sleeves and other coupling components according to the operating conditions. Replace worn sleeves with compatible parts and investigate the cause of abnormal wear.

OEM and Non-Standard Customization

Apex Coupling accepts inquiries for non-standard FCL coupling requirements, subject to technical review. To help us evaluate your application, provide:

• Required FCL model or target dimensions

• Driving and driven shaft diameters

• Required torque and rotational speed

• Installation dimensions

• Operating temperature and environment

• Material and surface treatment requirements

• Quantity and technical drawings, if available

Our team can review the requirements and advise on the information needed to confirm a suitable configuration.

Request a Quote for FCL Couplings

Looking for an FCL elastic sleeve pin coupling for your industrial transmission system? Contact Apex Coupling with your model, shaft dimensions and operating conditions.

Email: ella@apexcoupling.com
WhatsApp: +86 13437856962

Send your drawing or technical requirements to request product information and a quotation.

Frequently Asked Questions

What is an FCL elastic sleeve pin coupling?

It is a flexible shaft coupling that transmits torque through pins fitted with elastic sleeves. The sleeves provide a degree of flexibility and can be replaced when worn.

What material is used for FCL couplings?

The standard material supplied in the product information is 45# steel. Special materials may be available by request, subject to confirmation.

What is the operating temperature range?

The supplied product information lists -20°C to +70°C. Confirm suitability for the specific model and working environment.

What torque can an FCL coupling transmit?

The stated series-wide torque range is 4–15,680 N·m. The allowable torque depends on the individual model and must be verified before selection.

Can I order a non-standard FCL coupling?

Customization inquiries are supported. Provide the dimensions, shaft requirements, torque, speed and operating conditions for technical review.

Which information should I provide when requesting a quotation?

Include the model, shaft diameters, required torque, operating speed, installation dimensions, quantity and any material or surface treatment requirements.