45# Steel XL Star Jaw Coupling – Clamp Type Flexible Coupling for Servo Motors & CNC Lathes

Factory Direct from Guangdong, China | 45# Carbon Steel Hubs | Polyurethane Elastic Spider | Clamp Type | H7 Precision Bore | Black Oxide Finish | ROTEX / Lovejoy Replacement | Custom Bores & Keyways

Product Overview

The 45# Steel XL Star Jaw Coupling from Apexcoupling is a high-performance flexible shaft coupling designed for accurate torque transmission, vibration damping, and reliable operation in demanding industrial applications. Manufactured in Guangdong, China, this clamp-type jaw coupling is an ideal replacement for ROTEX, Lovejoy, and other major brand star couplings.

The coupling features 45# carbon steel hubs with a black oxide (blackening) finish for excellent corrosion and wear resistance. The polyurethane elastic spider provides effective cushioning, shock absorption, and compensation for axial, radial, and angular misalignments. The clamp-type (split-hub) mounting ensures a secure, zero-backlash shaft connection and allows for quick, tool-free installation and removal.

With an H7 precision bore, the XL star coupling delivers high concentricity, smooth operation, and low vibration. Its compact structure and easy disassembly make it suitable for frequent start-stop and reversing applications. The coupling is widely used in servo motors, CNC lathes, packaging machinery, printing machinery, wind power, heavy machinery, and automation equipment.

As a factory direct manufacturer, we support custom bores, keyways, hexagon and square bores, and non-standard sizes. Backed by ISO certification, IP65 protection, and a 100-hour maintenance interval, this coupling is built for reliable, long-term performance.

📧 Get a Quote: ella@apexcoupling.com

Key Attributes

Key Features

Technical Specifications

Product Details

01. High Concentricity & Precision Transmission
Precision machining ensures high concentricity, smooth operation, and low vibration for accurate power transmission.

02. Polyurethane Elastic Element
The built-in high-quality polyurethane elastic spider provides excellent flexibility and effectively cushions transmission shocks.

03. Clamp-Type Installation – No Tools Required
The clamp-type connection design allows for simple, efficient installation and removal without complex tools, saving maintenance time and cost.

04. Compact Structure & Easy Disassembly
The compact design is easy to disassemble and maintain, making it suitable for frequent start-stop and reversing applications. It is wear-resistant and corrosion-resistant.

05. Black Oxide Finish – Rust & Corrosion Resistant
The surface is treated with a professional blackening process to enhance corrosion resistance and wear resistance, maintaining a clean appearance over time.

06. High Transmission Efficiency & Damping
Excellent load capacity, low noise during operation, and no friction rotating parts – ensuring long service life.

07. Premium Materials & Strict Quality Control
High-purity bearing materials provide high wear resistance and long life. Every unit undergoes strict quality inspection before shipment to ensure stable performance.

08. Customization Supported
Custom specifications, materials, and dimensions are available according to customer requirements. Please contact us for details.

Customization Options

Apexcoupling offers extensive customization for XL star jaw couplings:

• Custom bore diameters and lengths

• Keyway, hexagon, square, and spline bores

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

• Alternative spider materials: PU, NBR, Hytrel, EPDM

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

• Custom colors and branding

• Drawing-based production

• OEM / ODM / OBM with your branding

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

Applications

The 45# steel XL star jaw coupling is widely used in:

• Packaging Machinery – High-speed packaging and filling lines

• Printing Machinery – Registration and tension control systems

• Wind Power Generation – Turbine and generator drives

• Heavy Machinery – Industrial drives and equipment

• CNC Machine Tools – Lathes, milling machines, and machining centers

• Automation Equipment – Factory automation, robotics, and conveyors

• Servo Motors – Precision motion control systems

• Stepper Motors – Positioning and drive systems

• Pumps & Compressors – General industrial drives

• General Industrial Drives – Where reliable flexible coupling is required

Why Choose Apexcoupling?

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

🔩 Premium 45# Carbon Steel – High strength, wear resistance, and durability

🧵 Polyurethane Elastic Spider – Excellent cushioning, vibration damping, and misalignment compensation

⚙️ Clamp Type & H7 Precision Bore – Zero backlash, high concentricity, and easy installation

🧾 ROTEX / Lovejoy Replacement – Direct interchangeability with major brands

📐 Full Customization – Custom bores, keyways, and materials

✅ 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, 45# steel jaw coupling, clamp type jaw coupling, ROTEX replacement coupling, Lovejoy replacement coupling, servo motor coupling, CNC lathe coupling, polyurethane spider coupling, custom jaw coupling, Apexcoupling