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LT Type Elastic Sleeve Pin Coupling TL Replaces – GB/T4323-2002, 6.3-16000 N·m
Model Number
Check below, custom
LT1
LT2
LT3
LT4
LT5
LT6
LT7
LT8
LT9
LT10
LT11
LT12
LT13
- Phone : +86 13431039760
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- Email : ella@apexcoupling.com
Product Description
LT Type Elastic Sleeve Pin Coupling – GB/T4323-2002, 6.3-16000 N·m, Maintenance-Free
Factory Direct | 45# Steel Hubs | Rubber Elastic Sleeve | 6.3-16000 N·m Torque | -20°C to +70°C | Easy Maintenance | No Lubrication | OEM Customizable
The Apexcoupling LT Type series is a high-performance elastic sleeve pin coupling manufactured to the GB/T4323-2002 standard (replacing GB4323-1984). Featuring a simple yet robust design – two flanged hubs connected by steel pins with rubber elastic sleeves – this coupling delivers reliable power transmission with moderate vibration damping and misalignment compensation. The elastic sleeve design allows for quick and easy replacement without axial movement of the connected shafts, significantly reducing maintenance downtime. With torque ratings from 6.3 to 16000 N·m and a wide operating temperature range of -20°C to +70°C, the LT Type coupling is the ideal solution for pumps, gear reducers, fans, blowers, compressors, conveyors, and general industrial machinery.
✅ GB/T4323-2002 standard – quality assured. Maintenance-free – no lubrication required. Elastic sleeve replacement without moving shafts – reduces downtime. Simple, compact, lightweight design. Wide torque range – 6.3-16000 N·m. Ideal for pumps, reducers, and conveyors.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Model Series | LT (Elastic Sleeve Pin Coupling) |
| Also Known As | TL series (original designation) |
| Standard | GB/T4323-2002 (replaces GB4323-1984) |
| Type | Flexible / Pin / Elastic sleeve |
| Structure | Two flanged hubs + steel pins + rubber elastic sleeves |
| Hub Material | 45# steel (standard); cast iron, ductile iron, forged steel (optional) |
| Pin Material | High-strength steel |
| Elastic Sleeve Material | High-quality rubber / polyurethane – wear-resistant, oil-resistant |
| Operating Temperature | -20°C to +70°C |
| Nominal Torque Range | 6.3 – 16000 N·m |
| Allowable Speed Range | 800 – 8000 RPM (varies by model) |
| Shaft Hole Diameter Range | 9 – 200 mm (varies by model) |
| Bore Standards | GB/T3852-1997 – Y, J, J1, Z type shaft holes |
| Keyway Standards | GB/T3852-1997 – A, B, C type keyways |
| Misalignment Compensation | Moderate – angular, radial, and axial |
| Vibration Damping | Moderate – elastic sleeve absorbs shock |
| Lubrication | None required – maintenance-free |
| Customization | OEM – custom bores, keyways, and materials |
| Applicable Industries | Pumps, gear reducers, fans, blowers, compressors, conveyors, mixers, agitators, general machinery |
| Place of Origin | Guangdong, China |
🔧 Custom bores and keyways available. Contact us with your specifications.
Product Structure
Two Flanged Hubs – Precision-machined from 45# steel with flange holes for pin insertion.
Steel Pins – High-strength pins that transmit torque between the two hubs.
Rubber Elastic Sleeves – Fitted over the pins, providing vibration damping, shock absorption, and misalignment compensation.
Retaining Rings / Locking Nuts – Secure the pins in position.
💡 How it works: The LT Type coupling consists of two flanged hubs connected by steel pins with elastic sleeves. Torque is transmitted through the pins, while the rubber elastic sleeves deform to absorb shock, dampen vibration, and compensate for angular, radial, and axial misalignment. The simple design allows for quick replacement of elastic sleeves without axial movement of the connected shafts – significantly reducing maintenance downtime. The coupling requires no lubrication and is maintenance-free .
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| GB/T4323-2002 Standard | Manufactured to established Chinese national standard – quality assured |
| 45# Steel Hubs | High strength, durability, and wear resistance |
| Rubber Elastic Sleeves | Provide vibration damping, shock absorption, and misalignment compensation |
| Maintenance-Free | No lubrication required – reduces operating costs |
| Easy Maintenance | Elastic sleeves can be replaced without axial movement of shafts – reduces downtime |
| Simple & Compact Design | Lightweight, small size – easy to install |
| Cost-Effective | Economical solution for medium-power transmission applications |
| Moderate Misalignment Compensation | Compensates angular, radial, and axial deviations |
| Wide Torque Range | 6.3-16000 N·m – covers light to heavy-duty applications |
| Wide Speed Range | 800-8000 RPM – suitable for various applications |
| OEM Customization | Custom bores, keyways, and materials available |
Applications
Pumps – Centrifugal, gear, and diaphragm pumps
Gear Reducers – Speed reducer input/output connections
Fans & Blowers – Industrial ventilation systems
Compressors – Air and gas compressors
Conveyors – Material handling systems
Mixers & Agitators – Industrial mixing equipment
General Machinery – Light to medium-duty power transmission
Machine Tools – Auxiliary drives
Agricultural Machinery – Farm equipment drives
Textile Machinery – Spinning and weaving equipment
Why Choose Apex Coupling for LT Type Couplings?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium 45# Steel | High strength, durability, and wear resistance |
| GB/T4323-2002 Standard | Manufactured to established standard – quality assured |
| Maintenance-Free | No lubrication required – reduces operating costs |
| Easy Maintenance | Elastic sleeve replacement without shaft movement |
| Wide Model Range | LT1 to LT23 – covers most industrial applications |
| OEM Customization | Custom bores and keyways available |
| ISO9001 Certified | Quality assured manufacturing |
FAQ
Q: What is an LT Type elastic sleeve pin coupling?
A: An LT Type coupling is a flexible pin coupling that uses steel pins with rubber elastic sleeves to transmit torque between two flanged hubs. It provides moderate vibration damping and misalignment compensation without requiring lubrication .
Q: What materials are used?
A: The hubs are made of 45# steel . The pins are high-strength steel. The elastic sleeves are made of high-quality rubber or polyurethane .
Q: What is the torque range?
A: The LT Type series covers 6.3 – 16000 N·m nominal torque .
Q: What is the operating temperature range?
A: The operating temperature range is -20°C to +70°C .
Q: Does the coupling require lubrication?
A: No. The LT Type coupling is maintenance-free – no lubrication required .
Q: Is it easy to replace the elastic sleeves?
A: Yes. Elastic sleeves can be replaced without axial movement of the connected shafts – reducing maintenance downtime .
Q: What standard is this coupling manufactured to?
A: The LT Type series is manufactured to GB/T4323-2002 (replacing GB4323-1984) .
Q: What are the common applications?
A: Pumps, gear reducers, fans, blowers, compressors, conveyors, mixers, and general industrial machinery.
Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom bores and keyways available.
Q: What is the difference between LT and TL?
A: LT is the current designation under GB/T4323-2002. TL is the original designation under the older GB4323-1984 standard. They are essentially the same coupling .
Request a Quote
Send us your model (e.g., LT5), bore size, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.
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