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L Type Elastic Jaw Coupling – Powder Metallurgy / Rubber, Cost-Effective for Wave Soldering Machines
Model Number
Check below, custom
D16-L20.5-d(3.2~8))
D27-L44-d(5~19)
D35-L50-d(8~22)
D45-L55-d(8~25)
D54-L55-d(10~28)
D54-L64-d(10~28)
D55-L61-d(12~32)
D66-L88-d(12~36)
D85-L110-d(12~48)
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
L Type Elastic Jaw Coupling – Powder Metallurgy / Rubber, Cost-Effective for Wave Soldering Machines
Factory direct | Powder metallurgy (sintered iron) hubs | High-quality rubber spider | Cost-effective | Lightweight | Maintenance-free | Easy assembly | OEM/ODM/OBM
The Apexcoupling L Type series is a cost-effective elastic jaw coupling designed for reliable power transmission in light to medium-duty applications. Featuring powder metallurgy (sintered iron) hubs and a high-quality rubber spider (NBR/nitrile rubber), this coupling delivers excellent vibration damping, misalignment compensation, and shock absorption at an economical price point. The three-piece construction – two hubs and one spider – allows for quick and easy assembly and disassembly without special tools. Lightweight, compact, and requiring no lubrication, the L Type coupling is ideal for wave soldering machines, conveyors, pumps, compressors, and general industrial machinery.
✅ Economical and practical – commonly used in wave soldering machines. Easy to disassemble, simple structure, lightweight, and maintenance-free.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Model Series | L Type – Standard Jaw Coupling |
| Also Known As | L series, L coupling, elastic jaw coupling |
| Structure | Two hubs + one spider (three-piece design) |
| Hub Material | Powder metallurgy (sintered iron) – L035 to L190 |
| Spider Material | High-quality rubber (NBR / nitrile butadiene rubber) – oil-resistant |
| Spider Shore Hardness | 80A (standard), 60A (L035) |
| Operating Temperature | -40°C to 100°C (NBR spider) |
| Backlash | Zero (with proper spider fit) |
| Misalignment Compensation | Angular (up to 1°) and parallel |
| Fail-Safe Design | Continues to transmit power even if spider fails |
| Lubrication | None required – maintenance-free |
| Standard or Nonstandard | Standard with OEM support |
| Customized support | OEM, ODM, OBM |
| Applicable Industries | Wave soldering machines, reflow soldering equipment, SMT assembly, conveyors, pumps, compressors, general machinery |
| Warranty | 1 Year |
| Place of Origin | Guangdong, China |
🔧 Custom bores, keyways, and spider materials (urethane, Hytrel, bronze) available. Contact us with your specifications.
L Type Series – Model Range
| Model | Max Bore (in) | Max Bore (mm) | Nominal Torque (in-lbs) | Nominal Torque (N·m) |
|---|---|---|---|---|
| L035 | 0.375 | 9.5 | 3.5 | 0.4 |
| L050 | 0.625 | 15.9 | 26.3 | 3.0 |
| L070 | 0.750 | 19.1 | 43.2 | 4.9 |
| L075 | 0.875 | 22.2 | 90 | 10.2 |
| L090 | 1.000 | 25.4 | 144 | 16.3 |
| L095 | 1.125 | 28.6 | 194 | 21.9 |
| L099 | 1.188 | 30.2 | 318 | 35.9 |
| L100 | 1.375 | 34.9 | 417 | 47.1 |
| L110 | 1.625 | 41.3 | 792 | 89.5 |
| L150 | 1.875 | 47.6 | 1,240 | 140 |
| L190 | 2.125 | 54.0 | 1,728 | 195 |
| L225 | 2.625 | 66.7 | 2,340 | 264 |
📐 L035 to L190 feature powder metallurgy (sintered iron) hubs; L225 and above feature cast iron hubs. Wave soldering machines commonly use L070 and L075 sizes.
Product Structure
Two Powder Metallurgy Hubs – Sintered iron, precision-machined with curved jaws, lightweight and cost-effective.
High-Quality Rubber Spider – NBR (nitrile butadiene rubber) – oil-resistant, resilient, and elastic.
Fail-Safe Design – Coupling continues to transmit power even if the spider fails.
💡 How it works: The L Type coupling consists of two hubs with interlocking jaws and a rubber spider insert. Power is transmitted through the spider, which absorbs shock, dampens vibration, and compensates for misalignment. The simple three-piece design allows for quick assembly and disassembly without special tools.
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| Powder Metallurgy Hubs | Cost-effective, lightweight, precision-made – ideal for high-volume applications |
| High-Quality Rubber Spider | Oil-resistant, resilient, elastic – excellent vibration damping and shock absorption |
| Maintenance-Free | No lubrication required – reduces operating costs |
| Easy Assembly & Disassembly | Simple three-piece design – no special tools required |
| Lightweight | Low inertia – suitable for high-speed applications |
| Fail-Safe Design | Continues to transmit power even if spider fails – minimizes downtime |
| Misalignment Compensation | Accommodates angular (up to 1°) and parallel misalignment |
| No Metal-to-Metal Contact | Reduces wear and extends service life |
| Resistant to Oil, Dirt, & Moisture | Suitable for harsh industrial environments |
| Wide Model Range | L035 to L225 – covers most industrial applications |
| OEM Customization | Custom bores, keyways, and spider materials available |
Why L Type Couplings Are Ideal for Wave Soldering Machines
Wave soldering machines are used in large-scale electronic assembly processes to solder components to printed circuit boards (PCBs). L Type couplings are commonly used in these machines for several reasons:
| Requirement | How L Type Coupling Meets It |
|---|---|
| Cost-effective | Powder metallurgy hubs provide economical solution for high-volume equipment |
| Lightweight | Low inertia – suitable for high-speed conveyor drives |
| Maintenance-free | No lubrication – reduces downtime in production environments |
| Easy maintenance | Simple three-piece design – quick spider replacement |
| Vibration damping | Rubber spider absorbs shock – protects sensitive electronics |
| Misalignment compensation | Accommodates installation tolerances |
| Fail-safe | Continues to operate if spider fails – minimizes production stops |
✅ Commonly used in wave soldering and reflow soldering equipment – L070 and L075 are popular sizes.
Applications
Wave Soldering Machines – Conveyor drives, pump drives
Reflow Soldering Equipment – Conveyor systems
SMT Assembly Lines – Pick-and-place, conveyor drives
Conveyors – Material handling systems
Pumps – Centrifugal, gear, and diaphragm pumps
Compressors – Air and gas compressors
Fans & Blowers – Ventilation systems
Mixers – Industrial mixing equipment
Packaging Machinery – Wrapping and sealing machines
General Industrial Machinery – Light to medium-duty power transmission
Spider Material Options
| Spider Material | Torque Capacity | Temperature Range | Best For |
|---|---|---|---|
| NBR Rubber (Standard) | Baseline | -40°C to 100°C | General purpose, oil resistance, vibration damping |
| Urethane | 1.5x NBR | Limited | Higher torque, less damping |
| Hytrel® | Up to 3x NBR | -51°C to 121°C | High torque, high temperature, oil/chemical resistance |
| Bronze | Up to 3x NBR | -40°C to 230°C | Low speed (≤250 RPM), extreme conditions |
✅ The standard NBR rubber spider provides the best combination of cost, vibration damping, and oil resistance for most applications.
Why Choose Apex Coupling for L Type Couplings?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium Materials | Powder metallurgy hubs + NBR rubber spider – durable and reliable |
| Cost-Effective | Economical solution for high-volume applications |
| Maintenance-Free | No lubrication required – reduces operating costs |
| Easy Assembly | Simple three-piece design – quick installation |
| Wide Model Range | L035 to L225 – covers most industrial needs |
| OEM Customization | Custom bores, keyways, and spider materials |
| ISO9001 & BV Certified | Quality assured for international buyers |
FAQ
Q: What is an L Type coupling?
A: The L Type coupling is a three-piece jaw coupling consisting of two powder metallurgy (sintered iron) hubs and one rubber spider. It is a cost-effective, lightweight, maintenance-free solution for light to medium-duty power transmission.
Q: What materials are used?
A: The hubs are made of powder metallurgy (sintered iron) for L035 to L190 sizes. The spider is made of high-quality rubber (NBR/nitrile butadiene) – oil-resistant and resilient.
Q: What are the common model sizes?
A: Standard sizes include L035, L050, L070, L075, L090, L095, L099, L100, L110, L150, L190, and L225. L070 and L075 are commonly used in wave soldering machines.
Q: Does the coupling require lubrication?
A: No. The L Type coupling is maintenance-free – no lubrication required.
Q: Is the coupling easy to install?
A: Yes. The simple three-piece design allows for quick assembly and disassembly without special tools.
Q: Can the coupling compensate for misalignment?
A: Yes. It accommodates angular misalignment up to 1° and parallel misalignment.
Q: What happens if the spider fails?
A: The coupling features a fail-safe design – it will continue to transmit power even if the spider fails, minimizing downtime until replacement.
Q: Is the coupling oil-resistant?
A: Yes. The NBR rubber spider is resistant to oil, dirt, moisture, and grease.
Q: What is the operating temperature range?
A: The NBR rubber spider operates from -40°C to 100°C.
Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM support – custom bores, keyways, and spider materials available.
Request a Quote
Send us your model size (e.g., L035, L050, L070), bore size, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.
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L035 L050 L070 L075 coupling
