Linear solenoid WL3870

tubularcompact24-volt

Overview
The WL3870 tubular linear solenoid is a compact electromagnetic actuator that converts electrical energy into precise linear motion. It comprises a cylindrical coil, enclosed magnetic housing, movable plunger, return spring and guide shaft. Energizing the coil with DC voltage produces a magnetic field that moves the plunger; when de-energized the return spring returns the plunger to its start position.

Design & Construction
The tubular design provides an enclosed magnetic circuit for higher magnetic efficiency compared with open-frame solenoids. Typical construction elements include precision-wound copper coil, carbon steel or plated housing, precision-machined plunger and optional surface treatments or seals for harsh environments. The sealed cylindrical form reduces energy loss, improves shielding and protects internal parts from dust and contamination.

Key Functional Characteristics

• Available in push or pull actions with fast response and repeatable linear travel.
• Multiple sizes and configurable options for voltages, strokes, force outputs, duty cycles and mounting methods.
• Options for waterproofing, surface treatment, custom connectors, lead lengths and plunger designs to meet OEM requirements.

Applications

• Industrial automation: locks, positioning systems, gates and assembly machines
• Packaging machinery, vending machines and textile equipment
• Medical and laboratory devices requiring precise short-stroke actuation
• Security systems, smart locks and automotive devices
• Agricultural equipment and other precision control systems

Advantages & Disadvantages

• Advantages: enclosed magnetic circuit with high efficiency; compact cylindrical form; fast response; low noise; good protection from contaminants; high customization potential.
• Disadvantages: available force typically decreases with increased stroke (verify force vs. stroke data); possible heat generation under continuous duty if coil not specified for continuous operation; limited travel compared with electric cylinders or pneumatic actuators.

Troubleshooting and Maintenance
Verify rated voltage and supply, measure coil resistance to detect open/short circuits, inspect wiring and connectors for loose contacts or corrosion, clean guide shaft and plunger if sticking occurs and check return spring operation and mounting alignment. For overheating issues confirm duty-cycle rating and improve ventilation or select continuous-duty models.

Product Datasheet (selected table fields)
Brand: Weilong Technology
Model Number: WL 3970 (table entry) — product marketed as WL3870
Rated Voltage: DC 12 or 24 V
Rated Power: 10–15 W
Work Model / Lifespan: 100,000 lifespan cycles
Push/Pull Force: approximately 1000 gf
Stroke: 10–20 mm
Reset Time: 1 s (off 1–3 s indicated)
Service Life: 300,000 cycles
Certifications: CE, ROHS, ISO9001
Material: Carbon steel housing with zinc plated coating
Lead Wire Length: 200 mm
Install Style: both sides with three mounted screw holes for easy setup
Tolerance of Dimension: +/- 0.1 mm
Water-proof: None (standard)
Insulation Class: F (approx. 150°C)
Hi-Pot Test: AC 600 V 50/60 Hz 1 s
Non-excitation Holding Force: 0
Working Temperature: -10°C to 100°C
Duty Cycle: 1–100% (models available for continuous duty)
Payment Term: TT, or LC at sight
Sample Order: Yes
Warranty: 1 year
MOQ: 500 pcs
Supply Ability: 5,000 pcs per week
Delivery Time: 30 days
Port of Loading: Shenzhen

Product Overview / Additional Notes
Tubular linear solenoids are offered in push or pull versions, multiple strokes and force ratings and can be customized (voltage, stroke, plunger design, springs, connectors, surface treatment and optional waterproof/dustproof versions). For continuous industrial operation select models specified for continuous duty and ensure proper thermal management.

Technical Specifications

• Brand: Weilong Technology
• Model: WL3870
• Rated Voltage: DC 12 V or 24 V
• Rated Power: 10–15 W
• Stroke: 10–20 mm
• Push/Pull Force: ~1000 gf
• Service Life: up to 300,000 cycles
• Material: Carbon steel housing with zinc plated coating
• Lead Wire Length: 200 mm
• Insulation Class: F (approx. 150°C)
• Working Temperature: -10°C to 100°C
• Duty Cycle: 1–100% (models for intermittent or continuous duty)
• Certifications: CE, ROHS, ISO9001
• MOQ: 500 pcs; Supply Ability: 5,000 pcs/week; Delivery Time: 30 days