Rotary solenoid WL700

high-performancecompactmagnetic latching

Product overview
A compact high-torque rotary solenoid (WL700) is an electromechanical actuator that converts electrical energy into controlled angular motion. It delivers defined rotation angles (typically 25°–95°) with high repeatability by translating axial magnetic force into torque via internal mechanisms such as ball bearings or inclined-plane spiral frames. Typical industrial uses include binary angular actuation for valves, indexing tables, locking mechanisms and automation gates.

Main features

• High torque for its compact footprint, enabling strong rotational force in confined assemblies.
• Predefined rotation angles (common: 25°, 35°, 45°, 65°, 90°) with precision and repeatability.
• Ball bearing or roller internal design to reduce friction and extend service life.
• Available in spring-return or latching versions; bi-directional rotation on request.
• Low average power when operated in pulsed mode; supports short high-torque pulses.
• Fast response (typically 10–50 ms depending on load).
• Multiple voltage options (DC 12V / 18V / 24V) and selectable duty cycles (intermittent to continuous variants).

Technical datasheet

• Brand: Weilong Technology
• Model: WL700
• Rated voltages: DC 12V, 18V or 24V
• Rated power: 100–150 W
• Rotation stroke: 25°–90° (model dependent)
• Holding torque: ~0.17–0.72 N·m (model dependent)
• Axial stroke: 1–3 mm or customizable
• Response time: < 30 ms (typical)
• Service life: ~500,000 cycles (typical; higher with ball-bearing versions)
• Material: carbon steel housing
• Lead wire length: 200 mm (standard)
• Mounting: screw (flange/stud options available)
• Dimension tolerance: ±0.1 mm
• Insulation class: B
• Operating temperature: -10°C to 100°C (options may extend)
• Duty cycle: 1–100% depending on model and cooling
• Certifications: CE, RoHS, ISO9001
• Waterproof: none standard (options may be available)
• Warranty: 1 year
• MOQ: 1000 pcs (standard)
• Supply ability: example 500 pcs/week
• Delivery time: typical 30 days

Applications

• Automotive: fuel cutoff valves, door locks, turbo wastegates, transmission valves.
• Industrial automation: diverters, indexing tables, clamp releases, sorting gates.
• Medical devices: valve actuation in dialysis or instrument release mechanisms.
• Aerospace: payload release, airflow controls, safe-arm switches.
• Office & consumer equipment: paper-path diverters, vending machine mechanisms, smart locks.
• Agriculture & hydraulics: seed-metering plates, valve actuation.
• Robotics: gripper actuation, compact tool-change mechanisms.

Advantages

• High torque in a small volume compared with linear solenoids or small motors.
• Simple control (switch, relay or basic driver) without encoders for many binary applications.
• Fast actuation and rugged design with few moving parts.
• Spring-return types require no holding power; latching variants hold position without continuous power.
• Cost-effective alternative to motors or pneumatics for limited-angle, high-torque tasks.

Disadvantages

• Fixed stroke angle; not suitable for continuous or arbitrarily adjustable rotation beyond rated stroke.
• Binary operation (limited discrete positions) — not for applications needing continuous positioning across wide ranges.
• Risk of overheating under improper continuous duty; pulsed operation recommended for high-torque bursts.
• Possible audible click in some operating modes.
• Torque profile may peak early in the stroke and reduce toward the end.

Troubleshooting — key points

• No rotation: check supply voltage, coil continuity, wiring and controller signals.
• Insufficient torque: verify voltage stability, duty cycle, cooling and that load does not exceed rated torque.
• Excessive noise: inspect mounting and alignment; consider DC to reduce AC vibration.
• Overheating: follow duty-cycle limits, reduce ON-time, improve cooling or select continuous-duty model.
• Slow activation: check supply, coil condition, lubrication and return spring condition.
• Sticking/mechanical faults: inspect for obstructions, shaft misalignment or contamination.
• Burnt coil/short: check for voltage spikes, insulation damage; use suppression (diode/varistor) on DC coils.

Technical specifications

• Brand: Weilong Technology
• Model: WL700
• Rated voltages: DC 12V / 18V / 24V
• Rated power: 100–150 W
• Available stroke angles: 25°, 35°, 45°, 65°, 90° (custom angles possible)
• Holding torque: ~0.17–0.72 N·m (depending on model)
• Axial stroke: 1–3 mm (customizable)
• Response time: < 30 ms (typical)
• Service life: ~500,000 cycles (typical)
• Material: carbon steel housing
• Lead wire: 200 mm (standard)
• Mounting: screw
• Dimension tolerance: ±0.1 mm
• Insulation class: B
• Operating temperature: -10°C to 100°C
• Duty cycle: 1–100% depending on model
• Certifications: CE, RoHS, ISO9001