DFC Aluminum Alloy Plum Coupling

Product Overview

The DFC aluminum plum coupling is a flexible jaw coupling designed for precision power transmission in servo motor systems, stepper motors, lead screw drives and industrial machinery.

The coupling features high-strength 6061 aluminum alloy hubs and an imported polyurethane (PU) elastic spider. Its curved jaw structure provides flexible torque transmission, vibration damping and compensation for minor shaft misalignment.

With H7 precision-machined bores and high-strength grade 12.9 clamping screws, the DFC series is designed for secure shaft connection and accurate installation. Anodized surface treatment is available to improve surface protection and wear resistance.

Apex Coupling supplies multiple DFC specifications and supports customized bore sizes, keyway machining and non-standard configurations according to customer drawings or shaft requirements.

Key Features of DFC Aluminum Plum Couplings

1. 6061 Aluminum Alloy Construction

The coupling hubs are manufactured from 6061 aluminum alloy, offering a combination of mechanical strength, lightweight construction and corrosion resistance.

The aluminum alloy structure makes the DFC plum coupling suitable for compact drive systems, servo motors, automation equipment and precision machinery.

2. Imported Polyurethane Elastic Spider

The DFC coupling uses an imported polyurethane (PU) spider as its elastic transmission element.

The PU spider provides elasticity and cushioning performance, helping absorb vibration and reduce impact during power transmission. The specified spider hardness is 98 Shore A.

3. Zero-Backlash Rotational Design

The curved jaw structure is designed to provide zero rotational clearance when correctly assembled with a suitable elastic spider.

This design supports accurate motion transmission and is suitable for applications involving forward and reverse rotation.

4. H7 Precision Bore Machining

The inner bores are machined to H7 tolerance according to the supplied specifications.

Precision bore machining helps improve shaft fit and installation consistency. Each bore can be inspected using precision gauges to support dimensional quality control.

5. Grade 12.9 High-Strength Clamping Screws

The coupling uses grade 12.9 high-strength screws for hub fastening, helping secure the coupling to the connected shafts.

6. Anodized Surface Treatment

The aluminum alloy hubs can be treated with an anodized surface finish to improve surface hardness and protection against wear and oxidation.

7. Flexible Shaft Connection

The elastic spider helps cushion transmission loads and compensate for minor shaft misalignment within the allowable limits of the selected coupling size.

8. Customized Bore and Keyway Options

Apex Coupling supports different bore configurations and keyway machining according to customer requirements.

Customized shaft connection options are available for different motor shafts and driven equipment.

Technical Specifications

Technical note: Rated torque, maximum speed and allowable misalignment have not been confirmed for the XY1 configuration. Please request the model-specific technical data before selecting the coupling for a particular load or speed.

DFC XY1 Coupling Model and Customization

The supplied product information identifies the product specification as XY1. The detailed outer diameter and bore-size selection should be confirmed with Apex Coupling.

Available customization options include:

• Different shaft bore diameters

• Keyway machining

• Customized shaft connection configurations

• Non-standard dimensions

• Customized production according to drawings or samples

For accurate model selection, please provide the shaft diameters on both sides, required outer diameter, overall length and installation requirements.

Applications of DFC Aluminum Plum Couplings

The DFC aluminum alloy plum coupling is suitable for industrial equipment requiring flexible shaft connections, vibration damping and compact installation.

Typical applications include:

• Servo motor drive systems

• Stepper motor transmission systems

• CNC machine tools

• Ball screw and lead screw drives

• Industrial automation equipment

• Precision positioning machinery

• Packaging machinery

• Printing equipment

• General industrial transmission systems

The polyurethane spider helps absorb vibration and cushion impact loads, supporting smooth transmission in suitable operating conditions.

How to Select the Right DFC Plum Coupling

Choosing the correct aluminum plum coupling requires checking the shaft dimensions and operating conditions.

1. Confirm Both Shaft Diameters

Measure the motor shaft and driven shaft separately. The two coupling hubs can be machined with different bore diameters.

2. Check the Required Outer Diameter and Length

Confirm the available installation space and select a coupling size that fits the equipment layout.

3. Confirm Keyway Requirements

If the shaft uses a keyway, provide its width and depth so the bore can be machined accordingly.

4. Check Torque and Speed

Provide normal operating torque, peak torque and rotational speed. The selected coupling and PU spider must be suitable for the actual operating conditions.

5. Consider the Working Environment

Check the operating temperature, exposure to oil or chemicals, moisture and other environmental conditions when selecting the elastic spider and surface treatment.

6. Confirm Spider Specifications

The spider hardness and geometry affect coupling stiffness, damping and transmission characteristics. Confirm the required spider specification when replacing an existing coupling.

Why Choose Apex Coupling?

Apex Coupling manufactures and supplies industrial couplings and power transmission components for international B2B customers.

• Direct manufacturer supply: Source aluminum plum couplings directly from a Chinese coupling manufacturer.

• 6061 aluminum alloy hubs: Lightweight coupling construction with anodized surface treatment options.

• Imported PU spiders: Elastic polyurethane elements for vibration damping and flexible transmission.

• Precision machining: H7 bore tolerance according to the supplied specifications.

• Customized production: Keyway machining, bore combinations and non-standard dimensions.

• OEM and ODM support: Production according to customer drawings, samples and technical requirements.

Frequently Asked Questions

What is an aluminum plum coupling?

An aluminum plum coupling is a flexible jaw coupling with aluminum alloy hubs and an elastic spider positioned between the jaws. The spider transmits torque while helping absorb vibration and compensate for minor shaft misalignment.

What material is used in the DFC coupling hubs?

The DFC coupling hubs are made from 6061 aluminum alloy, according to the supplied product specifications.

What is the material of the elastic spider?

The elastic spider is made from imported polyurethane (PU), with a specified hardness of 98 Shore A.

What is the bore tolerance of the DFC coupling?

The supplied specification indicates H7 precision bore machining.

Can the DFC coupling be customized with a keyway?

Yes. Apex Coupling supports keyway machining and customized bore configurations according to customer shaft requirements.

Is the DFC plum coupling suitable for servo motors?

Yes. It is suitable for servo motor and stepper motor drive systems, as well as CNC machinery and other industrial transmission applications, provided the selected size meets the required torque and speed.

What is the operating temperature range?

The supplied product specification lists an operating temperature range of -40°C to +100°C. Actual suitability also depends on the selected PU spider and working conditions.

Can Apex Coupling supply non-standard sizes?

Yes. Customized bore sizes, keyways and non-standard dimensions can be manufactured according to customer drawings or samples.

Request a Quote for DFC Aluminum Plum Couplings

Looking for a precision aluminum plum coupling for servo motors, stepper motors or industrial machinery?

Apex Coupling supplies DFC aluminum alloy flexible jaw couplings with 6061 aluminum hubs, imported PU spiders, H7 precision bores and customized keyway options.

Send us your required dimensions, shaft specifications or technical drawing. Our team will help you check the suitable configuration.

Website: https://www.apexcoupling.com/

Email: ella@apexcoupling.com

WhatsApp: +86 13437856962