Holding solenoid WL132250

lineartubularcompact

Product Overview
An industrial tubular pull solenoid is a compact electromagnetic actuator converting electrical energy into linear motion. The unit comprises a tubular housing with a copper coil, a ferromagnetic core and a sliding plunger. When the coil is energized the generated magnetic field pulls the plunger to produce linear actuation. Tubular geometry provides improved magnetic flux control, compact size and customizable operating parameters for automation uses.

Main Features

• Compact tubular construction with closed magnetic circuit for efficient flux and partial shielding
• Available in pull (retracting) or push variants, customizable stroke, force, voltage and mounting
• High force density relative to package size; suitable for fast, repeatable linear actions
• Designed for continuous or intermittent operation depending on duty and thermal management

How it works
Applying DC power to the coil creates a magnetic field that attracts the ferromagnetic plunger into the tube, producing linear motion. When power is removed the plunger returns by spring or external force. Net output force depends on coil current, voltage, geometry and instantaneous air gap (stroke).

Engineering & design considerations for long-stroke / high-force applications
Designing for long stroke and high force (e.g., ~50 kg at 125 mm) requires addressing several physics and manufacturing limits:

• Force vs stroke trade-off: magnetic force drops rapidly with increasing air gap; maintaining high force at full stroke needs much larger magnetic volume or alternative amplification.
• Coil current and heating: high ampere-turns generate significant I²R heating; thermal management and insulation limits constrain continuous operation.
• Magnetic saturation: core materials approach saturation (~1.6–2.0 T), reducing incremental force gains from higher current.
• Flux leakage over long gaps: longer strokes leak flux and reduce conversion efficiency and force uniformity.
• Mechanical alignment and wear: long plungers need precise guidance, low-friction bearings or coatings to prevent tilting and sticking.
• Mass vs speed: higher moving mass for greater force increases inertia and lowers response speed.
• Duty cycle and cooling: high-energy cycles may require intermittent duty or forced cooling for reliable life.
• Manufacturing limits: large-dimension devices increase cost, weight and machining precision requirements.
• Practical design directions: mechanical advantage (levers, rack & pinion), magnetic latches, hybrid actuators or multistage solenoids can meet long-stroke/high-force needs more efficiently.

Applications

• Industrial automation: valves, gates, positioning and packaging machinery actuators
• Security: electronic locks and access control mechanisms
• Vending and dispensing systems
• Medical and laboratory automation: dosing, sample handling
• Office equipment: printers, copiers and paper handling
• Automotive: locking mechanisms, actuated valves
• Robotics, smart systems and agricultural machinery

Advantages

• High force density in a compact cylindrical package
• Fast response and repeatable linear travel
• Closed tubular circuit improves magnetic efficiency and partial shielding
• Wide customization: voltage, stroke, force curve, mounting and environmental protection

Disadvantages / Limits

• Force decreases with increasing stroke; long-stroke force is non-uniform
• Significant heat generation at high power or continuous duty without proper cooling
• Limited travel compared with motor-driven actuators for very long strokes
• Long-stroke high-force designs are heavier, less efficient and harder to manufacture

Troubleshooting
Check supply voltage/current and wiring integrity. Measure coil resistance to detect winding faults. Inspect plunger and housing for debris, corrosion or mechanical obstruction. Verify return springs and alignment. Monitor duty cycle and temperature to avoid thermal-related failures.

Selection Guidance
Specify motion type (push/pull), required force including friction/safety margins, stroke and required force at that stroke, voltage and power, duty cycle (intermittent/continuous), environment (temperature, dust, chemicals), mounting space and alignment constraints, and expected cycle life. Consider custom options (stroke, force curve, cable assembly, sealing) and prototype testing for demanding long-stroke/high-force requirements.

Technical Data Sheet (summary)

• Brand: Weilong Technology
• Model Number: WL132250
• Rated Voltage (V): DC 12 V / 24 V / 48 V / 60 V
• Rated Power (W): 5000–6000 W
• Working Type: Tubular pull type
• Holding Force (N): 300–500 N
• Stroke (mm): 30–125 mm
• Reset Time (s): 0.1
• Service Life: ~300,000 cycles
• Certifications: CE, RoHS, ISO9001
• Housing Material: Carbon steel, zinc plated
• Lead Wire Length (mm): 200
• Installation: adjustable screw & cap
• Dimension Tolerance: ±0.1 mm
• Waterproof: None (standard)
• Insulation Class: F
• Hi-Pot Test: AC 1200 V 50/60 Hz 2 s
• Non-excitation Holding Force: 0 N
• Operating Temperature: -10°C to 100°C
• Duty Cycle: 1–100%
• Payment Terms: TT or LC at sight
• Sample Order: Yes
• Warranty: 1 year
• MOQ: 1000 pcs
• Supply Ability: 5000 pcs/week
• Delivery Time: 30 days
• Port of Loading: Shenzhen