UL Tire Coupling

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UL Type Tire Coupling – Rubber Element, High Damping, GB/T5844-2002

Model Number
Check below, custom

Product Description

UL Type Tire Coupling – Rubber Element, High Damping, GB/T5844-2002, 10–25,000 N·m

The Apexcoupling UL series is a high-performance tire coupling (rubber tyre coupling) manufactured to the GB/T5844-2002 standard. Featuring a vulcanized rubber tire element bonded to steel plates, this coupling delivers exceptional shock absorption, vibration damping, and misalignment compensation – making it ideal for applications with frequent starts, reversing loads, and harsh operating conditions. Available in UL1 through UL18 sizes with torque capacities from 10 to 25,000 N·m, the UL tire coupling offers simple bolt-on installation, maintenance-free operation, and the ability to replace the tire element without axial movement of connected equipment. Suitable for pumps, compressors, fans, mixers, conveyors, mining equipment, and general industrial machinery.

✅ High elasticity with excellent shock and vibration damping. Compensates angular, parallel, and axial misalignment. No lubrication required – maintenance-free. Replace tire element without moving shafts. GB/T5844-2002 standard – quality assured.

Key Technical Specifications

Parameter	Value
Brand	Apexcoupling
Model Series	UL Type (UL1 – UL18)
Standard	GB/T5844-2002
Type	Tire coupling / rubber tyre coupling
Element Material	Fabric-reinforced natural rubber – vulcanized to steel plates
Hub Material	Steel (standard)
Nominal Torque Range	10 – 25,000 N·m
Maximum Speed Range	5,000 – 900 RPM
Operating Temperature	-20°C to +80°C
Misalignment Compensation	Angular, parallel (radial), and axial
Axial Compensation	±5 mm to ±50 mm (depending on size)
Radial Compensation	0.4 – 6.3 mm
Angular Compensation	1° – 1°30′
Lubrication	None required – maintenance-free
Installation	Bolt-on – no axial movement required for element replacement
Customized support	OEM, ODM, OBM
Applicable Industries	Pumps, compressors, fans, mixers, conveyors, mining, metallurgy, construction, general industry
Place of Origin	Guangdong, China

🔧 Custom bores, keyways, and special materials available. Free 3D drawings provided for non-standard customization. Contact us with your specifications.

UL Series – Model Range & Specifications (GB/T5844-2002)

Model	Nominal Torque (N·m)	Max Speed (RPM)	Shaft Hole Range (mm)	D (mm)	B (mm)	Weight (kg)	Moment of Inertia (kg·m²)	Compensation Axial (mm)	Compensation Radial (mm)	Compensation Angular (°)
UL1	10	5000	11	80	20	0.7	0.0003	1.0	1.0	–
UL2	25	5000	12–14	80	20	0.7	0.0003	1.0	1.0	–
UL3	63	4500	16–18	120	32	1.8	0.0022	1.6	2.0	1°
UL4	100	4300	20–22	140	38	3.0	0.004	1.6	2.0	1°
UL5	160	4000	25–28	160	45	4.6	0.0084	1.6	2.0	1°
UL6	250	3600	30–35	180	50	7.1	0.0164	1.6	2.0	1°
UL7	315	3200	32–48	200	56	10.9	0.029	2.0	2.5	1°
UL8	400	3000	38–48	220	63	13	0.0448	2.5	3.0	–
UL9	630	2800	42–56	250	71	20	0.0898	–	–	–
UL10	800	2400	45–70	280	80	30.6	0.1596	3.0	3.6	–
UL11	1000	2100	50–70	320	90	39	0.2792	–	–	–
UL12	1600	2000	55–70	360	100	59	0.5356	3.6	4.0	–
UL13	2500	1800	63–95	400	110	81	0.896	4.5	–	1°30′
UL14	4000	1600	75–95	480	130	145	2.2616	5.0	–	–
UL15	6300	1200	85–120	560	150	222	4.6456	5.6	–	–
UL16	10000	1000	100–140	630	180	302	8.0924	6.0	–	–
UL17	16000	900	120–150	750	210	561	20.0176	6.7	–	–
UL18	25000	800	140–180	900	250	618	43.053	8.0	–	–

📐 Dimensions are for reference. Custom sizes and non-standard bores available upon request. Free 3D drawings provided for custom designs. Contact our engineering team for custom sizing.

Product Structure

Rubber Tire Element – Fabric-reinforced natural rubber, vulcanized to steel plates with threaded holes.
Two Half-Couplings (Hubs) – Steel hubs with bolt holes for direct connection.
Bolts – High-strength bolts securing the tire element to the hubs.

💡 How it works: The UL tire coupling consists of a rubber tire element vulcanized to steel plates, which is bolted directly to two half-couplings. Torque is transmitted through the friction between the tire element and the hub flanges, combined with the shear deformation of the rubber. The tire element provides high elasticity, absorbing shock loads and compensating for angular, parallel, and axial misalignment. The element can be replaced without axial movement of the connected equipment – simply unbolt the old tire and bolt in a new one.

Product Features & Advantages

Advantage	Benefit
High Elasticity & Damping	Absorbs shock loads and dampens torsional vibration – protects connected equipment
Large Misalignment Compensation	Compensates angular, parallel, and axial misalignment – reduces stress on bearings and seals
Maintenance-Free	No lubrication required – eliminates grease contamination and reduces maintenance costs
Easy Installation	Simple bolt-on design – no special tools required
Element Replacement Without Shaft Movement	Replace tire element without moving hubs or disconnecting shafts – minimizes downtime
Wide Torque Range	10–25,000 N·m – covers light to heavy-duty applications
Wide Operating Temperature	-20°C to +80°C – suitable for various environments
Durable Construction	Fabric-reinforced rubber with vulcanized steel plates – long service life
Noise Reduction	Rubber element dampens operational noise
Suitable for Reversing Loads	Excellent performance in applications with frequent starts, stops, and reversals
Free 3D Drawings	3D models provided for non-standard custom designs
OEM Customization	Custom bores, keyways, and special materials available

UL Tire Coupling vs Other Coupling Types

Feature	UL Tire Coupling	Gear Coupling	Jaw/Spider Coupling
Vibration Damping	Excellent – high elasticity	Poor – rigid metal-to-metal	Good – elastomeric element
Misalignment Compensation	High – angular, parallel, axial	Moderate	Moderate
Maintenance	None – no lubrication	Requires regular lubrication	None
Element Replacement	Without shaft movement	Requires shaft movement	Requires hub separation
Torque Capacity	10–25,000 N·m	Very high	Moderate to high
Best for	Shock loads, reversing, harsh environments	High torque, precise alignment	General purpose, servo drives

Applications

Pumps – Centrifugal, gear, and diaphragm pumps – absorbs hydraulic shock
Compressors – Reciprocating and screw compressors – dampens pulsation
Fans & Blowers – Industrial ventilation – reduces vibration
Mixers & Agitators – Heavy mixing applications – handles shock loads
Conveyors – Material handling – accommodates misalignment
Mining Equipment – Crushers, feeders – withstands harsh conditions
Metallurgical Equipment – Rolling mills – high torque, shock absorption
Construction Machinery – Heavy equipment – durable and reliable
General Industry – Applications with frequent starts, stops, and reversals

Why Choose Apex Coupling for UL Tire Couplings?

Advantage	Description
Factory Direct	Competitive B2B pricing – no middlemen
GB/T5844-2002 Standard	Manufactured to established Chinese national standard – quality assured
Premium Rubber Element	Fabric-reinforced natural rubber – vulcanized to steel plates
High Damping Capacity	Excellent shock and vibration absorption
Large Misalignment Compensation	Angular, parallel, and axial compensation
Maintenance-Free	No lubrication required – reduces operating costs
Easy Element Replacement	Replace tire without shaft movement – minimizes downtime
Wide Model Range	UL1 to UL18 – covers 10–25,000 N·m
Free 3D Drawings	3D models provided for custom designs
OEM Customization	Custom bores, keyways, and special materials
Fast Delivery	Large semi-finished stock for standard sizes

FAQ

Q: What is a tire coupling?
A: A tire coupling (also called a tyre coupling or rubber tire coupling) is a flexible coupling that uses a fabric-reinforced rubber tire element to transmit torque. The rubber element provides high elasticity, excellent shock absorption, and large misalignment compensation.

Q: What standard is the UL series manufactured to?
A: The UL series is manufactured to GB/T5844-2002, the Chinese national standard for tire-type couplings.

Q: What is the torque and speed range?
A: Nominal torque ranges from 10 to 25,000 N·m (UL1 to UL18). Maximum speed ranges from 5,000 to 900 RPM depending on model size.

Q: What misalignment can the coupling compensate for?
A: The UL tire coupling compensates for angular misalignment (1°–1°30′), parallel (radial) misalignment (0.4–6.3mm), and axial misalignment (±5mm to ±50mm) depending on size.

Q: Does the coupling require lubrication?
A: No. The UL tire coupling is maintenance-free – no lubrication required.

Q: Can the tire element be replaced without moving shafts?
A: Yes. The tire element can be replaced by simply unbolting the old element and bolting in a new one – no axial movement of the connected equipment is required.

Q: What is the operating temperature range?
A: The UL tire coupling operates in temperatures from -20°C to +80°C.

Q: What are the common applications?
A: Pumps, compressors, fans, mixers, conveyors, mining equipment, metallurgical equipment, and general industrial machinery with frequent starts, stops, and reversals.

Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom bores, keyways, and special materials available. Free 3D drawings are provided for non-standard custom designs.

Q: Do you provide CAD drawings?
A: Yes. We provide free 3D drawings for custom designs and can supply engineering drawings upon request.

Request a Quote

Send us your model (e.g., UL5, UL10, UL15), bore size, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.