XL Series Star Jaw Coupling – DJ‑A Type, 45# Steel, 22500 N·m, 180mm Bore

Factory Direct from Guangdong, China | 45# High‑Quality Round Steel | Polyurethane Elastomer | H7 Precision Bore | Black Oxide Finish | IP65 | Rotex Replacement | Custom Bores & Keyways

Product Overview

The XL Series Star Jaw Coupling (DJ‑A type) from Apexcoupling is a high‑torque, precision‑engineered flexible coupling designed for reliable power transmission in demanding industrial applications. Manufactured in Dongguan, Guangdong, China, this coupling is an ideal Rotex replacement for pumps, hydraulic motors, and general drive systems.

The coupling features 45# high‑quality round steel hubs with a black oxide (blackening) finish, providing superior hardness, stability, and torque capacity compared to ordinary steel. The polyurethane spider absorbs vibration and shock, reduces wear, and extends the service life of connected equipment. With a rated torque of 22500 N·m, a 180mm bore, and a maximum speed of 1000 rpm, this coupling is built for heavy‑duty applications.

The H7 precision bore ensures high concentricity and a secure shaft fit, while the keyway‑type mounting provides reliable torque transmission. The coupling is ISO certified and rated IP65 for dust and water‑jet protection. It offers 1mm axial deviation compensation and is available in custom bore sizes and non‑standard configurations upon request.

Whether you are replacing a worn Rotex coupling or designing a new drive system, the XL Series star jaw coupling delivers the performance, durability, and value you need.

📧 Get a Quote: ella@apexcoupling.com

Key Attributes

Key Features

Technical Specifications

Product Details

01. High‑Quality 45# Round Steel
The hubs are machined from 45# round steel with no sand holes or impurities, providing higher hardness, greater torque capacity, and better stability than ordinary steel. The surface is blackened for corrosion resistance.

02. H7 Precision Bore
The bore tolerance is controlled within H7 precision, ensuring high concentricity, accurate shaft fit, and powerful locking.

03. Polyurethane Spider
The polyurethane elastomer absorbs vibration and shock, reduces wear, and extends the service life of the coupling and connected equipment.

04. Rotex Replacement
This coupling is designed as a direct replacement for Rotex style couplings, offering a reliable and cost‑effective alternative.

05. Keyway‑Type Mounting
Standard keyway connection ensures secure shaft engagement and reliable torque transmission.

Customization Options

Apexcoupling offers extensive customization for the XL Series star jaw coupling:

• Custom bore diameters and lengths

• Keyway, hexagon, square, and spline bores

• Alternative materials: 45# steel, alloy steel, stainless steel

• Alternative elastomer materials: PU, NBR, Viton

• Surface treatments: black oxide, zinc plating, nickel plating

• Drawing‑based production

• OEM / ODM / OBM with your branding

📧 Send your drawing or requirements to: ella@apexcoupling.com

Applications

The XL Series star jaw coupling is widely used in:

• Pumps – Centrifugal pumps, water pumps, hydraulic pumps

• Hydraulic Motors – Heavy‑duty hydraulic drive systems

• Compressors – Air and gas compressors

• Conveyors – Belt conveyors, chain conveyors, screw conveyors

• Mixers & Agitators – Chemical and pharmaceutical mixing

• Machine Tools – CNC lathes, milling machines, drilling machines

• Packaging Machinery – High‑speed packaging lines

• Printing Machinery – Web presses and converting equipment

• Textile Machinery – Spinning, weaving, and finishing equipment

• General Industrial Drives – Where high torque and reliable power transmission are required

Why Choose Apexcoupling?

🏭 Factory Direct in Dongguan, China – Integrated manufacturing and trading, competitive pricing

🔩 Premium 45# Round Steel – Impurity‑free, high hardness, and high torque capacity

⚙️ H7 Precision Bore – High concentricity and secure shaft locking

🧵 Polyurethane Spider – Vibration damping and wear reduction

📐 Full Customization – Bores, keyways, and non‑standard sizes available

✅ ISO Certified & IP65 – Quality assurance and environmental protection

📦 Fast Delivery – Factory stock and efficient production for urgent orders

💬 Expert Technical Support – We help you select the correct coupling for your application

Get a Quote Today

Ready to order or need more information? Contact us directly:

📧 Email: ella@apexcoupling.com

We reply within 24 hours with pricing, availability, and technical recommendations.

Product Tags: XL star jaw coupling, DJ-A type star coupling, 45# steel jaw coupling, Rotex replacement coupling, polyurethane spider coupling, pump motor coupling, hydraulic motor coupling, 22500 N·m coupling, 180mm bore coupling, high torque star coupling, Apexcoupling