SMC KQ2L04-02AS Pneumatic Connector fit KQ2L0402AS
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SMC KQ2L04-02AS Pneumatic Connector (KQ2L0402AS)
1. Product Overview
The SMC KQ2L04-02AS is a 90° elbow one-touch pneumatic connector from the KQ2 series, designed for quick and reliable connection between 4 mm outer diameter air tubing and R1/4 male threads in industrial pneumatic systems. It features a push-in tube connection and R1/4 male thread with pre-applied sealant, enabling tool-free assembly and disassembly to minimize downtime during maintenance or reconfiguration. The connector supports a pressure range of -100 kPa to 1 MPa and an operating temperature of -5°C to 60°C, making it suitable for automation, packaging, material handling, and general machinery applications. Its compact, lightweight brass body with electroless nickel plating ensures corrosion resistance and durability, while the built-in seal guarantees leak-free performance, meeting the demands of standard industrial environments with low maintenance and long service life.
2. Main Functions
| Function | Detailed Description |
|---|---|
| Tool-Free Tube Connection | Push-in design allows instant insertion of 4 mm OD tubing; the collet and chuck mechanism secures the tube firmly without tools, speeding up assembly and reducing labor costs. |
| 90° Elbow Routing | 90-degree angled body redirects airflow perpendicular to the thread axis, optimizing pipeline layout in confined spaces and simplifying installation around machinery or equipment obstacles. |
| Reliable Threaded Sealing | R1/4 male thread with pre-applied sealant ensures airtight connection to valves, regulators, or other pneumatic components, eliminating the need for additional tape or sealant. |
| Quick Disconnection | Release collar design releases both the chuck and collet simultaneously, requiring minimal force to remove tubing for fast system reconfiguration or component replacement. |
| Vacuum & Pressure Compatibility | Operates across -100 kPa (full vacuum) to 1 MPa, suitable for both vacuum-based pick-and-place and standard pressure pneumatic applications like suction cup systems or cylinder actuation. |
3. Technical Features
- One-Touch Locking Mechanism: The push-in collet system provides secure tube retention with consistent clamping force, preventing accidental disconnection even under vibration or pressure fluctuations.
- Corrosion-Resistant Construction: Brass body with electroless nickel plating enhances resistance to industrial contaminants, humidity, and minor chemical exposure, extending service life in harsh environments.
- Integrated Sealing System: Premium nitrile rubber (NBR) seal ensures leak-free operation; the seal automatically adjusts to tube outer diameter variations for reliable performance with standard 4 mm OD tubing (FEP, PFA, nylon, polyurethane).
- Pre-Applied Sealant on Thread: R1/4 male thread comes with factory-applied sealant, reducing assembly steps and ensuring consistent sealing without user error from improper tape application.
- Wide Fluid & Temperature Compatibility: Suitable for air and water (water use: 0-40°C, non-freezing); temperature range of -5°C to 60°C accommodates most industrial operating conditions.
- High Burst Pressure Rating: 3 MPa proof pressure (at 23°C) ensures structural integrity and safety under overpressure conditions, preventing catastrophic failure during system testing or unexpected pressure spikes.
- RoHS Compliance: Meets RoHS standards for restricted substances, supporting environmentally friendly manufacturing and equipment design.
4. Product Dimensions (Unit: mm)
| Dimension Parameter | Value |
|---|---|
| Overall Length (Thread to Tube End) | 32 |
| Overall Width | 18 |
| Overall Height | 22 |
| Tube Connection (Push-In) | 4 mm OD (FEP, PFA, Nylon, Polyurethane) |
| Thread Type | R1/4 Male (With Pre-Applied Sealant) |
| Thread Length | 10 |
| Elbow Angle | 90° |
| Release Collar Diameter | 15 |
| Body Diameter (Max) | 12 |
| Mounting Clearance | 25 (Minimum Space for Hand Operation) |
5. Weight and Material Specifications
| Component | Material | Weight (g) |
|---|---|---|
| Body | Brass (Electroless Nickel Plated) | 12 |
| Collet & Chuck | Stainless Steel | 3 |
| Release Collar | Engineering Plastic | 2 |
| Seal | Nitrile Rubber (NBR) | 1 |
| Thread Sealant | Pre-Applied PTFE-Based Compound | 0.5 |
| Total Weight (Assembly) | – | 18.5 |
6. Key Performance Parameters
| Parameter | Value |
|---|---|
| Operating Pressure Range | -100 kPa to 1 MPa (Full Vacuum to 10 bar) |
| Proof Pressure (23°C) | 3 MPa |
| Operating Temperature | -5°C to 60°C; Water Service: 0°C to 40°C (Non-Freezing) |
| Fluid Compatibility | Air, Water (Non-Corrosive, Non-Freezing) |
| Tube Outer Diameter | 4 mm |
| Thread Specification | R1/4 Male |
| Connection Torque | 8-10 N·m |
| Service Life | ≥50,000 Insertion/Removal Cycles (Under Rated Conditions) |
| Leakage Rate | ≤1 cm³/min (At 0.6 MPa) |
| Material Compliance | RoHS Compliant |
WHO WE ARE
Sobre nosotros
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
How to purchase your electronic components?
You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
How to contact your customer service?
You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
Does your company often organize promotional activities?
In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.
