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Enlarged Bore Flexible Jaw Coupling | Zero Backlash Elastomer Spider 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
DJ-B Type Enlarged Bore Flexible Jaw Coupling (Star Elastic Coupling)
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Premium Zero-Backlash Spider Coupling | Ideal Interchange for Lovejoy & KTR Series
The DJ-B Type Star Elastic Jaw Coupling is engineered for high-torque power transmission systems requiring enlarged shaft bore capacities. Manufactured with precision steel hubs and high-durability 98 ShA polyurethane elastomers, the DJ-B series delivers superior vibration damping, zero backlash performance, and high load capacity—making it the ideal choice for heavy-duty industrial machinery, elevators, and construction equipment.
Key Advantages & Features
- Enlarged Shaft Bore Design: Engineered specifically to accommodate larger shaft diameter installations compared to standard DJ-A models, offering greater versatile integration.
- Heavy-Duty Steel Hub Construction: High-strength steel sleeve materials provide exceptional torsional rigidity and durability under heavy impact loads.
- Zero Backlash & Compact Profile: Compact structural design with a low moment of inertia ensures precise power transmission and minimal vibration.
- Direct Global Brand Replacement: Fully interchangeable with industry-standard jaw/spider couplings from world-leading brands such as Lovejoy and KTR (ROTEX).
- Superior Elastomer Performance: Comes standard with high-grade 98 ShA polyurethane spider elements for maximum nominal torque transmission and long service life.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Coupling Type | Flexible Jaw / Star Elastic Spider Coupling |
| Hub Material | Heavy-Duty Forged Steel / High-Grade Steel |
| Elastomer Hardness | 98 ShA Polyurethane Spider Element |
| Bore Type | Enlarged Shaft Bore (Custom Keyway & Clamp options) |
| Backlash | Zero-Backlash High Precision |
| Surface Treatment | Black Oxide / Anti-Corrosion Finish |
| Structure Feature | Compact, Low Inertia, Vibration Absorbing |
| Standard/Non-Standard | Standard & Fully Customizable Non-Standard Sizes |
Applications & Industries Served
Designed to withstand rigorous industrial environments, the DJ-B jaw coupling is widely deployed across:
- Heavy Machinery: Elevators, hoists, construction equipment, and cranes.
- Industrial Plant Equipment: Conveyor systems, mining machinery, and energy plants.
- General Manufacturing: Packaging machinery, machine tools, and automation production lines.
Custom & OEM/ODM Manufacturing (Non-Standard Solutions)
At ApexCoupling, we specialize in non-standard shaft coupling customization and precision OEM production. Whether you need custom bore sizes, special keyways, anti-corrosive coatings, or direct replacements for discontinued international brands, our engineering team can design and produce to your exact specifications.
How to Get an Accurate Quote & CAD Drawings:
To receive a fast quote and technical drawing confirmation for your project, please provide us with:
- Your technical drawings (2D/3D) or product photographs.
- Shaft bore diameters, keyway specifications, and operational torque requirements.
- Model numbers of existing couplings if requesting a direct brand replacement (e.g., KTR, Lovejoy).
How to Order / Get a Fast Quote
Ready to optimize your equipment performance or replace expensive OEM couplings? Contact our sales engineering team today!
- Email: ella@apexcoupling.com
- WhatsApp / WeChat: +86 13437856962
- Website: www.apexcoupling.com
- MOQ: 1 Piece (Sample orders welcome!)
zero backlash spider coupling, custom flexible shaft coupling, heavy duty steel hub jaw coupling, OEM non-standard coupling, Lovejoy jaw coupling replacement, KTR ROTEX equivalent coupling.
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Lovejoy jaw coupling replacement
