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LA/UL Tyre Coupling – Open Type Flexible Shaft Coupler for Motors & Pumps | TUL01 Tyre Element | Industrial Grade
Model Number
Check below, custom
LA/UL Tyre Coupling
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
LA/UL Tyre Coupling – Open Type Flexible Shaft Coupler for Motors, Pumps & Industrial Drives
Factory Direct | High Damping | Easy Installation | UL/TUL Series | Custom Bores Available
Product Overview
The LA/UL Tyre Coupling (also known as tyre-type flexible coupling or rubber tyre coupling) is a high-performance power transmission component designed to connect driving and driven shafts while providing exceptional vibration damping, shock absorption, and misalignment compensation. The elastomeric tyre element is vulcanised‑bonded to steel plates and bolted directly to the coupling halves, creating a robust and flexible connection that protects your machinery from torsional vibrations and impact loads.
With its open‑type, bolt‑on design, the UL tyre coupling allows for quick and easy installation and replacement of the tyre element without axial displacement of the connected equipment – significantly reducing downtime and maintenance costs. Available in LA, UL, LB, and TUL configurations, this coupling family is the reliable choice for motors, pumps, compressors, conveyors, and other general industrial applications.
📧 Get a Quote: ella@apexcoupling.com | WhatsApp/WeChat: +86 13431039760
Key Features
| Feature | Benefit |
|---|---|
| Rubber Tyre Element | Vulcanised‑bonded to steel plates – provides high flexibility, excellent damping, and compensation for angular, parallel, and axial misalignment |
| Bolt‑On, Open Design | Easy assembly and disassembly – tyre element can be replaced without axial movement of the coupling halves, minimising downtime |
| High Damping Capacity | Rubber element absorbs shock loads and torsional vibrations, protecting motors, gearboxes, and driven equipment from damage |
| Large Misalignment Compensation | Accepts significant angular, radial, and axial deviations – reduces stress on bearings and shafts |
| Simple Construction | Robust and reliable design with minimal maintenance requirements |
| Wide Size Range | Available from UL1 to UL6 (and LA series equivalents) covering torque from 10 N·m to 250 N·m |
| Custom Bore Options | Y-type, J1‑type, and other shaft hole configurations available on request |
| Conforms to GB/T5844‑2002 | Manufactured to Chinese national standard for tyre couplings; also available in JB/ZQ4018‑97 (LLA/LLB series) |
Technical Specifications
| Parameter | Details |
|---|---|
| Model Series | LA, UL (GB/T5844‑2002), LB, TUL |
| Tyre Element | Rubber with vulcanised steel plates |
| Torque Range | 10 – 250 N·m (rated) |
| Max Speed (Steel) | Up to 5,500 RPM (varies by model and material) |
| Misalignment Compensation | Axial, radial, and angular – contact us for specific values |
| Mounting Style | Bolt‑on, open type |
| Shaft Hole Types | Y‑type (cylindrical), J1‑type (cylindrical with keyway), custom |
| Product Standard | GB/T5844‑2002 (also LLA/LLB per JB/ZQ4018‑97 available) |
| Certification | ISO Certified |
| Place of Origin | Guangdong, China |
Model Dimensions & Technical Data – UL Series
| Model | Rated Torque (N·m) | Peak Torque (N·m) | Max Speed (rpm) – Steel | Bore Range (mm) | Overall Length – Y Type (mm) | D (mm) | B (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| UL1 | 10 | 31.5 | 3,500 | 11 | 25 | 80 | 20 | 0.7 |
| UL2 | 25 | 80 | 3,000 | 12–14 | 32 | 100 | 26 | 1.2 |
| UL3 | 63 | 180 | 3,000 | 16–19 | 42 | 120 | 32 | 1.8 |
| UL4 | 100 | 315 | 3,000 | 20–24 | 52 | 140 | 38 | 3.0 |
| UL5 | 160 | 500 | 3,000 | 25–28 | 62 | 160 | 45 | 4.6 |
| UL6 | 250 | 710 | 2,500 | 30–35 | 82 | 180 | 50 | 7.1 |
LA series and other custom sizes available – please contact us for specifications.
Model Designation – Marking Example
A UL5 tyre coupling is marked as follows according to GB/T3852‑1997:
Marking:
Driving end: Y‑type shaft bore, A‑type keyway, d = 28 mm, L = 62 mm
Driven end: J1‑type shaft bore, B‑type keyway, d = 32 mm, L = 60 mm
Coupling marking:YA28×62 / J1B32×60 / GB/T5844‑2002
(Contact us for your specific bore and keyway requirements.)
Available Variants
| Variant | Standard | Description |
|---|---|---|
| UL Series | GB/T5844‑2002 | Standard tyre coupling – wide availability |
| LA Series | Custom / equivalent | Same design, alternative naming – details on request |
| LB Series | JB/ZQ4018‑97 | Heavy‑duty version with reinforced tyre element |
| TUL / TUL01 | Custom | Tyre element only – replacement part for existing UL couplings |
Key Advantages at a Glance
✔ Precision Engineered – Reliable, durable construction for long service life
✔ Easy Installation – Open bolt‑on design allows quick mounting
✔ Maintenance‑Friendly – Tyre element replacement without moving the coupling halves
✔ Stable Performance – Consistent torque transmission with excellent damping
✔ Safe & Reliable – Proven design for demanding industrial environments
Applications
The LA/UL tyre coupling is widely used in:
Electric Motors – General purpose motor-to-load connections
Pumps – Centrifugal pumps, water pumps, slurry pumps
Compressors – Reciprocating and screw compressors
Conveyors – Belt conveyors, bucket elevators, material handling
Generators – Diesel generator sets and power units
Mixers & Agitators – Chemical and pharmaceutical mixing equipment
Fans & Blowers – Industrial ventilation and air handling
General Industrial Machinery – Wherever flexible, damping connections are required
Why Choose Apexcoupling?
🏭 Factory Direct – Integrated manufacturing and trading, competitive pricing
🛞 Premium Rubber Tyre Elements – High‑quality vulcanised rubber for superior damping and long life
🔧 Easy Replacement – Tyre element change without axial shaft movement – minimal downtime
📐 Full Customisation – Bores, keyways, and special dimensions available
✅ ISO Certified Quality – Rigorous quality control throughout production
📦 Large Stock – Standard models ready for immediate shipment
💬 Expert Technical Support – We help you select the right coupling for your application
Custom & Non‑Standard Orders
We understand that every application is unique. Apexcoupling offers extensive customisation for the LA/UL tyre coupling:
Custom bore diameters (within model limits or special orders)
Special keyway configurations (A‑type, B‑type, or custom)
Alternative shaft hole types (Y, J1, Z, etc.)
LA, LB, TUL, and special series equivalents
Custom tyre element hardness and material options
OEM/ODM with your branding
📧 Send your drawing or 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
We reply within 24 hours with pricing, availability, and technical recommendations.
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