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XL Series Star Flexible Coupling | 45# Steel Jaw Coupling with Polyurethane Spider | Rotex Replacement
Model Number
Check below, custom
| Model | Outer Diameter (mm) | Length (mm) | Bore Range (mm) |
|---|---|---|---|
| XL0 | 30 | 35 | 6–16 |
| XL1 | 40 | 66 | 6–19 |
| XL2 | 55 | 78 | 8–24 |
| XL3 | 65 | 90 | 8–28 |
| XL4 | 80 | 114 | 10–38 |
| XL5 | 95 | 126 | 10–42 |
| XL6 | 105 | 140 | 10–48 |
| XL7 | 120 | 160 | 15–55 |
| XL8 | 135 | 185 | 15–65 |
| XL9 | 160 | 210 | 20–75 |
| XL10 | 200 | 245 | 30–90 |
| XL11 | 225 | 270 | 30–115 |
| XL12 | 255 | 295 | 40–125 |
| XL13 | 290 | 340 | 40–145 |
| XL14 | 320 | 375 | 40–160 |
| XL15 | 370 | 425 | 60–180 |
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
XL Series Star Flexible Coupling – 45# Steel Jaw Coupler with Polyurethane Spider
Factory Direct | H7 Precision Bore | Rotex Replacement Compatible | Custom Sizes Available
Product Overview
The XL Series Star Flexible Coupling is a high-performance power transmission component engineered to connect driving and driven shafts while compensating for angular, parallel, and axial misalignments. Featuring a three-piece design with two precision-machined 45# steel hubs and a durable polyurethane star-shaped spider, this coupling delivers exceptional torque transmission with superior vibration damping and shock absorption.
Whether you are upgrading pump systems, servo motors, CNC lathes, or automated machinery, the XL Series coupling provides the reliability and precision your industrial application demands.
📧 Get a Quote: ella@apexcoupling.com | WhatsApp/WeChat: +86 13431039760
Key Features
| Feature | Benefit |
|---|---|
| 45# Carbon Steel Hubs | Precision-machined from impurity-free forged round steel with zero sand holes, delivering superior hardness, high torque capacity, and long-term stability |
| Polyurethane Star Spider | High-resilience elastomeric insert absorbs vibration, isolates impact shocks, reduces mechanical wear, and extends drivetrain component life |
| H7 Precision Inner Bore | Ground to strict H7 tolerance standards, ensuring high concentricity, perfect axial alignment, and a powerful, reliable shaft lock |
| Black Oxide Surface Finish | Professional anti-corrosion treatment protects against moisture, oil splashes, and chemical vapors – more stable and wear-resistant than conventional cast metals |
| Clamp-Type Locking (DJ-A) | Split-hub clamping mechanism compresses uniformly around the shaft circumference, maximizing frictional holding power without damaging shaft surfaces |
| Maintenance-Free Operation | No lubrication required – no metal-to-metal contact eliminates wear and reduces downtime |
| Rotex Interchangeable | Fully compatible with German ROTEX couplings, providing more options and seamless replacement |
| Customizable Configuration | Available in various sizes, bore diameters, keyways, spline profiles, and spider hardness options to match your exact specifications |
Technical Specifications
| Parameter | Details |
|---|---|
| Model Series | XL0 – XL16 (DJ-A Clamping Type) |
| Hub Material | 45# Carbon Steel (Impurity-Free Round Bar) |
| Spider Material | High-Resilience Polyurethane (Elastomeric) |
| Structure Type | Star / Jaw (Curved Jaw Design) |
| Surface Treatment | Black Oxide (Blackening Finish) |
| Bore Tolerance | H7 Precision Standard |
| Mounting Style | Clamp-Type (Split-Hub Clamping) |
| Rated Torque Range | 15 – 23,500 N·m |
| Allowable Speed Range | 19,000 – 2,000 r/min |
| Shaft Bore Diameter | 6 – 200 mm (Custom sizes available) |
| Operating Temperature | -35°C to +80°C |
| Product Certification | ISO Certified |
| Compatibility | Interchangeable with German ROTEX couplings |
Model Dimensions – XL Series (DJ-A Clamping Type)
| Model | Original Model | Rated Torque (N·m) | Max Speed (rpm) | Bore Range (mm) | L (mm) | D (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| DJ14A | XL0 | 15 | 19,000 | 6–16 | 35 | 30 | 0.1 |
| DJ19A | XL1 | 20 | 14,000 | 6–19 | 66 | 40 | 0.3 |
| DJ24A | XL2 | 70 | 10,600 | 8–24 | 78 | 55 | 0.61 |
| DJ28A | XL3 | 190 | 8,500 | 8–28 | 90 | 65 | 1.0 |
| DJ38A | XL4 | 380 | 9,500 | 10–38 | 114 | 80 | 2.08 |
| DJ42A | XL5 | 530 | 8,000 | 10–42 | 126 | 95 | 3.21 |
| DJ48A | XL6 | 620 | 7,100 | 10–48 | 140 | 105 | 4.41 |
| DJ55A | XL7 | 820 | 6,300 | 15–55 | 160 | 120 | 6.64 |
| DJ65A | XL8 | 1,250 | 5,600 | 15–65 | 185 | 135 | 10.13 |
| DJ75A | XL9 | 1,950 | 4,750 | 20–75 | 210 | 160 | 16.03 |
| DJ90A | XL10 | 4,800 | 3,750 | 30–90 | 245 | 200 | 27.5 |
| DJ100A | XL11 | 6,800 | 3,350 | 30–115 | 270 | 225 | 38.5 |
| DJ110A | XL12 | 8,000 | 3,000 | 40–125 | 295 | 255 | 54.0 |
| DJ125A | XL13 | 10,000 | 2,650 | 40–145 | 340 | 290 | 81.8 |
| DJ140A | XL14 | 14,500 | 2,360 | 40–160 | 375 | 320 | 109.7 |
| DJ160A | XL15 | 20,000 | 2,000 | 60–180 | 425 | 370 | 162.7 |
| DJ180A | XL16 | 23,500 | 1,800 | 80–200 | 475 | 420 | 230.8 |
Custom bore sizes, keyways, and spline profiles available upon request.
Applications
The XL Series star flexible coupling is widely used in:
Pump Systems – Centrifugal pumps, hydraulic pumps, water pumps
Rotary Boring Machines – Precision drilling and boring equipment
CNC Machine Tools – Lathes, milling machines, machining centers
Servo Motors & Stepper Drives – Motion control systems
Conveyor Systems – Material handling and belt conveyors
Compressors & Fans – Industrial air compression and ventilation
Packaging & Printing Machinery – High-speed automation equipment
Crushers & Mining Equipment – Heavy-duty industrial applications
Why Choose Apexcoupling?
🏭 Factory Direct – Integrated manufacturing and trading, eliminating middleman costs
🔧 In-Stock Availability – Large inventory of standard sizes for immediate shipment
📐 Full Customization Support – Non-standard bore sizes, keyways, spline profiles, and specialized spider hardness
✅ ISO Certified Quality – Stringent quality control throughout production
🌍 Global Shipping – Fast and reliable delivery worldwide
💬 Expert Technical Support – Our team helps you select the right coupling for your application
Custom & Non-Standard Orders
Need a custom bore size, special keyway, or spline profile? We’ve got you covered.
Our factory supports:
Custom bore diameters (6–200mm and beyond)
Special keyway configurations
Spline profiles (involute, straight, etc.)
Custom spider hardness (various durometer ratings)
Non-standard lengths and flange configurations
OEM/ODM services
📧 Send your custom requirements to: ella@apexcoupling.com
Get a Quote Today
Ready to order or need more information? Contact us directly:
📧 Email: ella@apexcoupling.com
📱 WhatsApp / WeChat: +86 13431039760
🌐 Website: www.apexcoupling.com
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XL series star flexible coupling
