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Industrial Flexible Curved Jaw Coupling | Steel Keyed, Rotex Type, 2000 N·m | Apex Coupling
Model Number
Check below, custom
D-Diameter, L-Length, d(borerange
Rotex14 D30-L35-d(6~16)
Rotex19 D40-L66-d(6~25)
Rotex24 D55-L78-d(8~35)
Rotex28 D65-L90-d(10~42)
Rotex38 D80-L114-d(10~50)
Rotex42 D95-L126-d(10~55)
Rotex48 D105-L140-d(10~65)
Rotex55 D120-L160-d(15~70)
Rotex65 D135-L185-d(15~75)
Rotex75 D160-L210-d(20~95)
Rotex90 D200-L245-d(30~100)
Rotex100 D225-L270-d(30~110)
Rotex110 D255-L295-d(40~125)
Rotex125 D290-L340-d(40~145)
Rotex140 D320-L375-d(40~165)
Rotex160 D370-L425-d(60~190)
Rotex180 D420-L475-d(80~200)
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
Industrial Flexible Curved Jaw Coupling – Steel Keyed, Rotex / Spider Type, 2000 N·m
Factory direct | 45# Steel | Black oxide finish | GE19 to GE90 sizes | OEM/ODM supported
The Apexcoupling Jaw Flexible Coupling series (comparable to Rotex / Spider bush coupling) is designed for heavy‑duty industrial power transmission. Featuring steel keyed jaws and a replaceable elastomeric spider element, it provides excellent vibration damping, misalignment compensation, and high torque capacity – ideal for pumps, construction machinery, and mining equipment.
✅ Standardized design with curved jaws ensures uniform load distribution and longer spider life.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Model Series | GE19 / GE24 / GE28 / GE38 / GE42 / GE48 / GE55 / GE65 / GE75 / GE90 |
| Type | Elastomeric / Jaw / Spider |
| Structure | Curved jaw (steel hubs) |
| Body Material | 45# Steel (high‑strength carbon steel) |
| Spider Material | Premium elastomer / polyurethane (oil & wear resistant) |
| Surface Treatment | Black oxide (blackening) |
| Color | Black |
| Bore Diameter | 20 mm (standard example) – custom bores available per model |
| Rated Torque | Up to 2000 N·m (depending on size) |
| Speed Range | 3800 – 1000 rpm (varies by model) |
| Standard / Nonstandard | Standard with custom support |
| Keyway type | Steel keyed jaw (standard) |
| Customization | OEM, ODM, OBM supported |
| Applicable Industries | Building material shops, manufacturing plants, machinery repair shops, food & beverage, printing shops, construction, energy & mining, general industrial |
| Warranty | 1 Year |
| Certificate | ISO9001, BV certificate |
| MOQ | 1 Set |
| Packaging | Wooden box |
| Origin | Guangdong, China |
🔧 Bore sizes, keyway dimensions, and spider materials can be customized per your drawing. Contact us for technical matching.
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| 45# Steel Hubs | High strength, wear resistance, and durability – outperforms aluminum in heavy‑duty applications |
| Curved Jaw Design | Uniform pressure on the spider element, reducing stress concentrations and extending service life |
| Replaceable Elastomeric Spider | Easy maintenance – replace spider without moving the hubs (saves downtime) |
| Excellent Vibration Damping | Protects connected equipment (pumps, motors) from shock loads and torsional vibration |
| Accommodates Misalignment | Compensates for small angular, parallel, and axial misalignments |
| Keyed Shaft Connection | Positive drive – no slip even under high torque or reverse rotation |
| Black Oxide Surface | Provides basic corrosion resistance and a professional, uniform appearance |
| Wide Size Range | GE19 to GE90 covers torque requirements from small fans to large industrial pumps |
| Global Certifications | ISO9001 and BV certified – quality assured for international B2B buyers |
| OEM/ODM Support | Custom bores, materials, and markings available for original equipment manufacturers |
Product Structure & Components
Two Steel Hubs (Driving & Driven) – 45# steel, keyed bore, curved jaw profile.
Elastomeric Spider Element – Polyurethane/rubber insert that transmits torque and absorbs shock.
Keyway + Set Screw – Standard locking method; optional clamping ring available on request.
Applications
Pumps – centrifugal, gear, screw, and diaphragm pumps
Construction Machinery – concrete mixers, crushers, excavators
Mining Equipment – conveyors, feeders, mills
Industrial Fans & Blowers
Food & Beverage Processing (with food‑grade spider option)
Printing & Packaging Machinery
Power Plants & Energy Sector
General Industrial Drive Systems
Why Choose
Apex Coupling for Jaw Flexible Couplings?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Heavy‑Duty Material | 45# steel instead of aluminum – higher torque capacity and longer life |
| Precision Machining | H7 bore accuracy, excellent concentricity |
| Spider Options | Multiple elastomer durometers (hardness) for different torque/damping needs |
| Customization | Non‑standard bores, keyways, special spider materials, and custom branding |
| Quality Assurance | ISO9001 and BV certified manufacturing |
| Fast Delivery | Stock for GE19-GE90 standard sizes; custom orders 7‑10 days |
| Technical Support | Free sizing calculation and 3D drawing service |
FAQ
Q: What is the difference between a standard jaw coupling and a curved jaw coupling?
A: Curved jaw couplings have a convex/concave jaw profile that distributes contact pressure evenly across the spider. This reduces wear and extends spider life compared to straight‑jaw designs.
Q: Why choose steel hubs instead of aluminum?
A: 45# steel offers higher strength, greater torque capacity, and better wear resistance than aluminum – ideal for heavy industrial applications like pumps, mining, and construction.
Q: What are the standard sizes available?
A: We offer GE19, GE24, GE28, GE38, GE42, GE48, GE55, GE65, GE75, and GE90. Intermediate sizes available on request.
Q: What spider materials are available?
A: Standard is premium polyurethane (oil‑resistant, wear‑resistant). We also offer high‑temperature, food‑grade, and low‑backlash spiders. Please specify your operating conditions.
Q: How do I know which size to choose?
A: Send us your motor power (kW/HP), speed (rpm), shaft diameters, and operating torque. We will select the correct model for you.
Q: Can I get a coupling with a brake disc or clamp hub?
A: Yes. We offer customized hub designs. Please contact our sales team with your drawing.
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