Dual-input shaft electric linear actuator
Products Description
The dual-input shaft electric linear actuator is a versatile, high-torque linear motion unit featuring two independent input shafts on the gearbox housing. This unique design allows flexible motor mounting, manual backup, and multi-actuator synchronous linkage-making it far more adaptable than conventional single-input models. It converts rotary motion into precise, powerful linear push/pull movement via a high-efficiency screw drive system, delivering reliable performance across light to heavy loads in both industrial and commercial environments.
Product Applications
This actuator is ideal for scenarios requiring flexible power input, synchronous motion, or manual-electric dual operation. Typical applications include:
Industrial AutomationSynchronized lifting of worktables, conveyor height adjustment, fixture positioning, and gate/valve actuation on production lines.
Material Handling & LogisticsLoading platform leveling, lift gate operation, and adjustable guide rails in warehouses and distribution centers.
Agricultural EquipmentAdjustable plows, harvester header control, irrigation gate movement, and livestock feeder positioning.
Medical & Rehabilitation DevicesHeight-adjustable beds, treatment tables, and rehabilitation platforms requiring smooth, quiet, and safe linear motion.
Stage & Entertainment SystemsStage platform lifting, screen/projector positioning, and lighting rig adjustment with multi-point synchronization.
Renewable EnergySolar panel angle adjustment and wind turbine nacelle fine-tuning in off-grid or remote installations.
Construction & MachineryFormwork adjustment, small hoist systems, and access door operation on construction equipment.
Product Functions
Dual-input Shaft FlexibilityTwo input ends allow motor on one side, handwheel on the other, or motor on both sides for redundant drive; also enables direct shaft connection for synchronous operation of multiple actuators.
Precise Linear Motion ControlConverts rotation into smooth, repeatable push/pull movement with consistent speed and low backlash; suitable for positioning tasks requiring ±0.05 mm accuracy.
High Thrust & Load CapacityEngineered for both tension and compression loads; maintains stable performance under dynamic cycling and static holding conditions.
Integrated Self-lockingThe screw drive provides inherent self-locking at rest, preventing load drift without additional brakes in most horizontal and low-angle applications.
Manual Backup CapabilityOne input shaft can be fitted with a hand crank for emergency operation or fine adjustment during power outages.
Multi-actuator SynchronizationInput shafts can be linked via connecting shafts or bevel gearboxes to ensure perfect synchronous motion across two or more actuators.
Quiet & Low-maintenance OperationPrecision-machined gears and screws reduce noise; sealed housing and long-life grease minimize routine maintenance.
Product Drive Methods
1. Electric Drive (Standard)
AC Motors: 1-phase / 3-phase options for continuous-duty industrial use.
DC Motors: 12/24/48 VDC for mobile, battery-powered, or outdoor equipment.
Brake Motors: Integral holding brake for vertical loads to prevent back-driving.
2. Precision Electric Drive
Stepper Motors: Open-loop positioning with repeatable stop points.
Servo Motors: Closed-loop control with position feedback for high-accuracy, programmable motion.
3. Manual Drive
Handwheel or crank fitted to one input shaft for manual fine adjustment, setup, or emergency use.
4. Combined Manual + Electric Drive
One shaft: motor for normal operation
Opposite shaft: handwheel for manual override or fine tuning.
5. Synchronized Multi-actuator Drive
Input shafts interconnected via coupling shafts or gearboxes to synchronize two or more actuators from a single power source.
Gear Ratio Options
The gear ratio defines the balance between output thrust, linear speed, and input torque requirement.
Low Ratio (3:1 ~ 10:1)
Features: Faster linear speed, lower mechanical advantage, reduced self-locking effect.
Best for: Light-to-medium loads, high-cycle automation, rapid positioning tasks; external brake recommended for vertical use.
Medium Ratio (12:1 ~ 30:1)
Features: Balanced speed, thrust, and self-locking; most versatile range.
Best for: General industrial use, worktable adjustment, material handling, and mixed manual/electric operation.
High Ratio (36:1 ~ 80:1)
Features: Maximum torque multiplication, slow and controlled movement, strong self-locking.
Best for: Heavy loads, vertical lifting, precision positioning, and applications requiring load holding without brakes.
Selection Guidelines
Higher ratios = more thrust, slower speed, better self-locking.
Lower ratios = faster speed, less thrust, reduced self-locking.
Vertical or safety-critical loads → prefer medium to high ratios.
High-cycle, light-load tasks → prefer low to medium ratios.
Technical Data Table
| Parameter | Standard Range | Custom Range | Notes |
|---|---|---|---|
| Rated Dynamic Load | 0.5–50 kN | 0.3–80 kN | Push / pull reversible |
| Rated Static Load | 1.0–100 kN | 0.5–150 kN | Holding capacity |
| Stroke Length | 50–1500 mm | 20–3000 mm | Custom long stroke available |
| Linear Speed | 1–80 mm/s | 0.5–120 mm/s | Depends on ratio & input speed |
| Gear Ratio | 3:1 ~ 80:1 | Custom ratios upon request | Balances speed & thrust |
| Input Speed | 50–180 rpm | 30–250 rpm | Motor / manual compatible |
| Positioning Accuracy | ±0.03–±0.10 mm | ±0.01 mm optional | With precision screw & encoder |
| Duty Cycle | 25–100% | Custom duty rating | Continuous or intermittent |
| Protection Class | IP54 | IP65 / IP67 optional | Dust & splash resistance |
| Operating Temp | -20°C ~ +70°C | -40°C ~ +85°C | Extreme temp grease optional |
| Mounting Orientation | Horizontal / Vertical / Inverted | Custom brackets | Multi-angle installation |
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