D44 L50 Aluminium Flexible Coupler high Double Dual Diaphragm Coupling with Elastic Connector for 3D Screw and Motor （Size :17mm to 19mm ）

Description

Product Overview

The D44 L50 aluminium flexible coupler from Sinoblu is engineered for high‑performance torque transmission in a compact disc‑type design. With an outer diameter of 44 mm and a length of 50 mm, the coupling fits shafts ranging from 17 mm to 19 mm, making it a versatile solution for a wide range of equipment. Constructed from precision‑machined aluminium alloy, the unit balances low weight with excellent rigidity, reducing inertia and improving dynamic response. The double diaphragm system consists of two elastically bonded stainless‑steel diaphragms that absorb misalignment, dampen vibration, and protect connected shafts from shock loads. A secure clip‑mount interface ensures a firm connection while allowing quick installation and removal without the need for additional tools.

Usage

This coupling is ideally suited for applications where precise motion control and reliable power transfer are critical. It is commonly used in 3D printers, where the need for accurate positioning and low backlash is paramount. CNC machine tools benefit from the coupling’s ability to handle high torque while compensating for slight shaft misalignments, extending the life of bearings and gear sets. Stepper motor assemblies in robotics and automation systems also rely on the D44 L50 to maintain consistent performance under varying loads. Additionally, the coupler works well with blowers, DIY robot projects, and other industrial equipment that demand a balance of strength and flexibility.

Why Choose Us

Choosing the Sinoblu D44 L50 means selecting a product backed by rigorous quality control and a reputation for durability. Each coupling undergoes a multi‑stage inspection process, including dimensional verification, material testing, and performance validation under simulated load conditions. The aluminium alloy is sourced from certified suppliers, ensuring consistent mechanical properties and corrosion resistance. Our engineering team designs the double diaphragm to provide superior torsional stiffness while allowing angular and axial misalignment up to 2 degrees, reducing wear on adjacent components. We also offer responsive technical support and a straightforward warranty policy, giving customers confidence in long‑term operation.

Key Features

• Lightweight aluminium alloy reduces overall system inertia for faster acceleration.
• Double diaphragm design absorbs misalignment and dampens vibration, protecting motor and gearbox.
• Clip‑mount attachment provides a secure, tool‑free installation and easy removal.
• High torque capacity ensures reliable power transfer in demanding industrial applications.
• Comprehensive after‑sales support and warranty give peace of mind for long‑term projects.

FAQ

What shaft sizes are compatible with the D44 L50 coupling?

The coupling is designed for shafts with diameters from 17 mm to 19 mm, covering a broad range of standard motor and gearbox shafts.

Can the coupling handle angular misalignment?

Yes, the double diaphragm system allows up to approximately 2 degrees of angular misalignment without compromising torque transmission.

Is the aluminium alloy prone to corrosion in humid environments?

The alloy used is treated with an anodized finish that provides excellent resistance to oxidation and moisture, making it suitable for most indoor industrial settings.

How does the clip‑mount differ from traditional set‑screw couplings?

Unlike set‑screw designs that require torque tools and can damage shaft surfaces, the clip‑mount secures the coupling with a spring‑loaded latch, offering a repeatable, non‑destructive connection.

What warranty does Sinoblu provide for this product?

Sinoblu offers a one‑year limited warranty covering manufacturing defects, backed by responsive technical assistance and replacement services.