Holding solenoid WL1939

linearlockingsorting

Overview
A pull-type tubular solenoid is an electromechanical actuator that converts electrical energy into linear motion by pulling a central plunger inside a cylindrical coil. The Weilong AS 1939 (commercial ref. WL1939) is designed for compact installations requiring fast, repeatable linear actuation at low DC voltages.

Main Features

• Cylindrical protected housing for improved resistance to dust and mechanical damage
• Fast response and concentrated magnetic field for accurate actuation
• Available for low DC voltages (DC 12V, DC 24V) with configurable stroke and mounting options
• Simple electrical integration with lead wires and screw mounting

Typical Applications

• Industrial automation: sorting, packaging and assembly machines
• Vending and ticketing mechanisms: locking, releasing and dispensing
• Medical devices: fluid handling, sample positioning and precision operations
• Automotive systems: control units, locking mechanisms
• Consumer appliances: coffee machines, access control and household equipment

Advantages / Disadvantages
Advantages:

• Compact tubular design with protection for internal components
• High initial pull force with fast actuation
• Energy-efficient for short, frequent cycles and easy system integration
• Customizable stroke, power and mounting configurations

Disadvantages:

• Pulling force decreases with increased stroke; stroke length is limited
• Often requires a return spring for reliable reset
• Continuous operation can generate heat; correct duty cycle and cooling required
• Performance sensitive to alignment and air gap

Troubleshooting (common issues and checks)

• No actuation: check supply voltage, wiring, coil continuity and control signal
• Low pull force: verify rated voltage, reduce stroke, check plunger alignment or select higher-force model
• Overheating: confirm duty cycle, correct voltage and ventilation; consider higher-temp rated unit
• Slow response: stabilise supply, inspect for internal friction and check return spring
• Noise/vibration: secure mounting, verify supply quality and realign plunger
• Stuck plunger: inspect for debris, corrosion or worn spring; replace as needed
• Coil failure: check for overvoltage, inappropriate duty cycle or insulation issues

Product Datasheet

• Brand: Weilong
• Model Number: AS 1939 (commercial ref: WL1939)
• Rated Voltage: DC 12V or 24V (other low DC voltages available)
• Rated Power: 3–8 W
• Stroke: configurable 2–5 mm (customizable)
• Holding Force: approx. 350 gf
• Working Mode: Pull type (also available in push)
• Duty: Continuous (models for other duty cycles available)
• Insulation Class: B
• Operating Temperature: -10°C to 100°C
• Lead Wire Length: 200 mm
• Mounting: screw
• Service Life: ~200,000 cycles (application dependent)
• Certifications: CE, RoHS, ISO9001
• MOQ: 1000 pcs; Supply Ability: ~5000 pcs/week
• Delivery Time: 30 days; Port of Loading: Shenzhen
• Payment Terms: TT or LC at sight; Warranty: 1 year; Sample order: Yes

Technical specifications

• Brand: Weilong
• Model: AS 1939 (WL1939)
• Voltages: DC 12V / DC 24V (other low DC options)
• Power: 3–8 W
• Stroke: 2–5 mm (customizable)
• Holding force: ~350 gf
• Duty cycle: 1–100% (model dependent)
• Insulation class: B
• Operating temperature: -10°C to 100°C
• Lead wire length: 200 mm
• Mounting: screw
• Service life: ~200,000 cycles
• Certifications: CE, RoHS, ISO9001