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Contact: Natthan
Phone: +86 18098208595
Email: nathan@gglinearactuator.com
Address: Building 9, No.6, Zhongnan South Road, Shangsha, Chang'an Town, Dongguan City,China
FREQUENTLY ASKED QUESTIONS
Find answers to commonly asked questions about our linear actuators and motion control products. If you can't find what you're looking for, please contact our support team.
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General Questions
A linear actuator is a device that converts rotary motion into linear (straight line) motion. It typically consists of a motor, gearbox, lead screw or ball screw, and a nut that moves along the screw.
How it works:
- The motor rotates, driving the gearbox
- The gearbox reduces speed and increases torque
- The screw (lead screw or ball screw) rotates
- The nut moves linearly along the screw axis
- This creates precise linear motion for pushing, pulling, or positioning applications
Linear actuators are used in industrial automation, medical equipment, automotive systems, and many other applications requiring controlled linear movement.
All our products come with a standard 12-month warranty from the date of delivery. This covers:
- Manufacturing defects
- Material failures under normal operating conditions
- Performance not meeting published specifications
Warranty does not cover:
- Damage from misuse or improper installation
- Normal wear and tear
- Modifications made by customer
- Consumable parts (belts, seals, lubricants)
Extended warranty options are available upon request for critical applications.
Our products are certified with the following international standards:
- CE Marking - Conforms to EU safety, health, and environmental requirements
- RoHS - Restriction of Hazardous Substances compliance
- ISO 9001:2015 - Quality management system certification
We continuously work to meet international industry standards and can provide specific certification documents upon request. Additional certifications for specific markets (UL, CSA, etc.) can be arranged for large volume orders.
Yes, we provide technical documentation in English and Chinese. Available documentation includes:
- Product catalogs and specifications
- Installation guides
- Maintenance manuals
- 3D CAD models
- Certification documents
Additional language support can be arranged for large volume orders. Please contact our sales team for specific requirements.
Product Selection
To select the right actuator, consider these key factors:
- Payload capacity - How much weight will the actuator move?
- Stroke length - What travel distance is required?
- Speed requirements - How fast does the actuator need to move?
- Precision/accuracy needs - What positioning accuracy is required?
- Mounting orientation - Horizontal, vertical, or side mounting?
- Environmental conditions - Temperature, humidity, dust, chemicals?
- Duty cycle - Continuous or intermittent operation?
Our recommendation: Provide us with your application requirements, and our engineering team will recommend the optimal solution. We offer free consultation and can provide detailed selection guides.
| Feature | Ball Screw | Belt Driven |
|---|---|---|
| Precision | ±0.01mm to ±0.02mm | ±0.05mm to ±0.1mm |
| Max Speed | 0.5-2 m/s | Up to 5 m/s |
| Max Stroke | Up to 6m | Up to 12m |
| Payload | High (up to 500kg) | Medium (up to 200kg) |
| Cost | Higher | Lower |
| Best For | High precision applications | High speed, long stroke |
Choose ball screw if: You need high precision, high thrust, or vertical applications.
Choose belt driven if: You need high speed, long stroke, or cost-effective solution.
Yes, we offer comprehensive customization services including:
- Special stroke lengths (beyond standard range)
- Modified mounting configurations
- Custom motor selections and brands
- IP rating upgrades (up to IP67)
- Specialized coatings and materials
- Integrated sensors and limit switches
- Special lubricants for extreme temperatures
- Food grade and clean room versions
Customization process:
- Submit your requirements to our engineering team
- We provide technical evaluation and quotation
- Prototype development and testing
- Production and quality inspection
- Delivery with full documentation
Minimum order quantities may apply for custom designs. Contact us for details.
Technical Specifications
Our standard product range offers stroke lengths from 50mm to 6000mm.
- Ball screw actuators: 50mm - 6000mm standard
- Belt driven actuators: 100mm - 12000mm standard
- Linear motors: 50mm - 3000mm standard
Custom stroke lengths are available upon request. Longer strokes may require additional support rails or intermediate supports to prevent sagging and maintain accuracy.
Payload capacity varies by model and configuration:
- Horizontal load: 10kg to 500kg (standard), up to 1000kg (heavy-duty)
- Vertical load: 5kg to 200kg (standard)
- Side load: Varies by model, typically 10-30% of horizontal capacity
Important: Payload capacity decreases as stroke length increases due to structural deflection. For loads exceeding standard specifications, we offer customized solutions with reinforced structures.
Repeatability varies by drive type and grade:
Linear Motor Modules (Linear Motor Stage)
- With optical encoder (glass scale): ±1μm (±0.001mm) repeatability
- With magnetic encoder: ±0.5μm (±0.0005mm) repeatability
- Ultra-high precision positioning for semiconductor, inspection, and nano-assembly applications
Ball Screw Modules
- C7 grade ball screw (standard): ±0.02mm repeatability
- C5 grade ground screw (optional): ±0.01mm repeatability
- C3 grade ground screw (optional): ≤±0.01mm repeatability (ultra-precision)
- Choose screw grade based on your precision requirements and budget
Belt Driven Modules
- Standard: ±0.05mm to ±0.1mm repeatability
- Ideal for high-speed, long-stroke applications where moderate precision is acceptable
Accuracy specifications depend on stroke length, load conditions, and environmental factors. We provide detailed accuracy charts for each product model.
Maximum speed depends on the drive mechanism:
- Belt driven actuators: Up to 5 m/s
- Ball screw actuators: 0.5-2 m/s (depending on lead and motor)
- Linear motors: 3-5 m/s
Note: Higher speeds may require special considerations for acceleration/deceleration profiles to maintain accuracy and prevent mechanical stress. Our engineers can help optimize speed settings for your specific application.
Standard products are available in the following IP ratings:
- IP54: Dust protected and splash resistant - standard for most applications
- IP65: Dust tight and protected against water jets - for harsh environments
Higher IP ratings available upon request:
- IP66: Protected against powerful water jets
- IP67: Protected against temporary immersion
Custom sealing solutions can be provided for specific environmental requirements including chemical resistance, food grade, and clean room applications.
Our actuators are compatible with a wide range of motors:
- Stepper motors: NEMA 17, 23, 34 (2-phase, 3-phase, 5-phase)
- Servo motors: AC servo (100W to 7.5kW)
- AC/DC motors: Various configurations available
- Linear motors: Integrated options available
We offer:
- Integrated motor options (motor pre-installed)
- Adapter plates for customer-supplied motors
- Motor selection guidance based on your requirements
Motor selection depends on torque requirements, speed, control precision, and application environment.
Linear Motor Modules
Linear motor modules offer significant advantages over traditional screw or belt driven systems:
- Ultra-high precision: ±1μm with optical encoder, ±0.5μm with magnetic encoder
- High speed & acceleration: Up to 5m/s speed, 10G+ acceleration
- No mechanical transmission: Direct drive eliminates backlash, wear, and maintenance
- Infinite stroke length: Can be extended indefinitely by connecting multiple motor segments
- Multi-mover capability: Single, dual, or multiple movers can operate independently on the same track
- Smooth motion: No cogging effect with our advanced motor design
- High thrust density: Compact design with powerful output
- Zero maintenance: No lubrication required, no mechanical wear parts
Ideal applications: Semiconductor manufacturing, flat panel display inspection, precision assembly, laser processing, metrology, and nano-positioning.
| Feature | Optical Encoder (Glass Scale) | Magnetic Encoder |
|---|---|---|
| Repeatability | ±1μm (±0.001mm) | ±0.5μm (±0.0005mm) |
| Resolution | Up to 0.1μm | Up to 0.01μm |
| Environment | Clean room / controlled environment | Harsh environment tolerant |
| Temperature range | 0°C to +50°C | -20°C to +80°C |
| Dust/Oil resistance | Requires IP54 or above | Excellent (IP65+ compatible) |
| Cost | Higher | Standard |
Choose optical encoder if: You need maximum precision in clean, controlled environments (semiconductor, lab).
Choose magnetic encoder if: You need ultra-high precision in industrial/harsh environments or require higher temperature tolerance.
Yes! Our linear motor modules support flexible mover configurations:
- Single mover: Standard configuration for most applications
- Dual mover: Two independent movers on the same track, each with independent control
- Multi-mover: Three or more movers can operate simultaneously and independently
Key benefits of multi-mover configuration:
- Independent position control for each mover
- No mechanical coupling between movers
- Flexible scheduling and collision avoidance
- Ideal for multi-station processing and parallel operations
Each mover can have different payloads, speeds, and precision requirements. Our control system handles collision detection and coordinated motion.
Yes, one of the biggest advantages of linear motor modules is the ability to achieve effectively infinite stroke length:
- Modular design: Motor segments can be connected end-to-end
- No practical limit: Stroke length limited only by your facility space and guideway straightness
- Standard modules: Available from 100mm to 3000mm per segment
- Extended travel: 10m, 20m, 50m+ configurations are possible
Applications for long stroke:
- Large panel inspection (LCD, OLED, solar panels)
- Automated warehouse systems
- Large-scale CNC machining
- Aerospace component manufacturing
For strokes exceeding 6 meters, we recommend intermediate support and laser alignment for optimal performance.
Yes, we offer marble (granite) platform versions of linear motor modules for ultra-high precision applications:
Advantages of marble platform:
- Excellent thermal stability: Low thermal expansion coefficient ensures dimensional stability
- High rigidity: Superior vibration damping and structural stiffness
- Flatness:** Natural granite provides exceptional surface flatness (Grade 0 or Grade 1)
- Corrosion resistant: Natural stone is impervious to most chemicals
- Non-magnetic:** Ideal for applications sensitive to magnetic interference
Typical applications:
- Semiconductor inspection and metrology
- Precision measurement systems (CMM)
- Optical component alignment
- Micro/nano positioning systems
- Laser interferometry setups
Marble platforms are available in various grades and can be customized to your size requirements.
We offer multiple ball screw grades to match your precision and budget requirements:
| Screw Grade | Type | Repeatability | Application |
|---|---|---|---|
| C7 | Standard rolled screw | ±0.02mm | General automation, packaging, material handling |
| C5 | Precision ground screw | ±0.01mm | CNC machining, precision assembly, inspection |
| C3 | Ultra-precision ground screw | ≤±0.01mm | Semiconductor, metrology, optical alignment |
Selection guide:
- C7 (standard): Best value for general industrial applications
- C5 (optional): Choose when you need ±0.01mm precision
- C3 (optional): Choose for ultra-precision applications requiring sub-0.01mm accuracy
Ground screws (C5/C3) have longer lead time and higher cost but deliver superior precision and smoother motion. Contact us for pricing and availability.
Heavy-Duty & Industrial Motion Systems
Rack and pinion linear modules offer effectively unlimited stroke length:
- Modular rack design: Gear racks can be joined end-to-end seamlessly
- No practical limit: Travel distance limited only by your facility space and guideway support
- Standard configurations: Available from 1 meter to 100+ meters
- Heavy load capacity: Can handle payloads from 500kg to 5000kg+
Repeatability: ±0.1mm for standard rack and pinion systems
Typical applications:
- Large-scale CNC cutting machines (plasma, laser, waterjet)
- Gantry loading/unloading systems
- Automated welding cells
- Material handling in steel/metal fabrication
- Solar panel manufacturing lines
Rack and pinion systems are ideal when you need long travel distances combined with high payload capacity at a competitive cost.
Gantry robots (also called truss manipulators or XYZ gantry systems) are overhead motion systems that provide three-axis (X-Y-Z) movement:
Key features:
- Overhead mounting: Installed above the work area, saving floor space
- XYZ configuration: Three-axis coordinated motion for complex tasks
- High rigidity: Robust structural design for heavy payloads
- Large workspace: Can cover entire production cells or machining centers
- CNC integration: Compatible with standard CNC controllers and PLCs
Applications:
- CNC machine tending (loading/unloading parts)
- Palletizing and depalletizing
- Assembly operations
- Inspection and quality control
- Welding and material removal
We offer custom gantry solutions with various combinations of ball screw, belt, and rack drives to optimize speed, precision, and payload for your specific application.
A 7th axis (also called Robot Transfer Unit or RTU) is a linear track system that extends the working envelope of industrial robots:
How it works:
- The robot is mounted on a motorized linear track
- The track adds a 7th degree of freedom to the robot's standard 6 axes
- The robot can travel along the track to reach multiple workstations or large workpieces
Benefits:
- Extended reach: One robot can service multiple machines or stations
- Cost-effective: Reduces the number of robots needed in a cell
- Flexibility: Easy to reprogram for different tasks and layouts
- Space optimization: Maximizes robot utilization
Technical specifications:
- Stroke lengths: 1m to 50m+ (customizable)
- Payload capacity: 100kg to 2000kg (depending on robot weight)
- Speed: up to 2 m/s
- Repeatability: ±0.05mm to ±0.1mm
- Compatible with all major robot brands (ABB, KUKA, FANUC, Yaskawa, etc.)
Common applications:
- Multi-station welding cells
- Large part machining (aerospace, automotive)
- Palletizing across multiple lines
- Spray painting and coating
- Inspection of large structures
We offer a comprehensive range of Ball Screw Driven Linear Actuators with different enclosure options:
| Series | Type | Key Features | Best For |
|---|---|---|---|
| GGK | Single-Axis Robot | Compact design, high rigidity | Space-constrained installations |
| ATH | Integrated Module | Space-saving, high efficiency | Integrated automation systems |
| GTH | Semi-Enclosed | Cost-effective, general purpose | Standard industrial applications |
| GCH | Fully-Enclosed | Cleanroom compatible, dust-proof | Clean environments, food/pharma |
Common features across all series:
- High precision and high thrust capability
- Available with C7 (±0.02mm), C5 (±0.01mm), or C3 (≤±0.01mm) grade screws
- Integrated guide rails for smooth motion
- Multiple motor mounting options (servo, stepper, AC)
- Customizable stroke lengths from 50mm to 6000mm
Our Belt Driven Linear Actuators provide high-speed, long-stroke solutions:
| Series | Type | Key Features | Max Speed |
|---|---|---|---|
| GTB | Semi-Enclosed Belt | Smooth motion, velocity up to 5m/s | 5 m/s |
| GCB | Fully-Enclosed Belt | Protection in harsh environments | 4 m/s |
| MG | European Standard Module | Heavy duty, modular aluminum profile | 3 m/s |
Advantages of belt driven systems:
- High speed operation (up to 5 m/s)
- Long stroke capability (up to 12 meters)
- Low noise operation
- Cost-effective for long travel applications
- Suitable for pick-and-place, sorting, and material handling
Our Linear Motors & Motion Platforms product line includes several technologies for zero-backlash, high dynamic response applications:
| Type | Characteristics | Best Applications |
|---|---|---|
| Iron-Core | High force density, robust performance | Heavy-duty machining, stamping, pressing |
| Ironless | No cogging, ultra-smooth motion | Precision inspection, semiconductor, optics |
| Tubular | Compact cylindrical actuation | Medical devices, lab automation, packaging |
| Precision Stage | Granite-base, nano-level accuracy | Metrology, lithography, wafer handling |
All linear motor systems feature direct drive technology with zero mechanical transmission, resulting in:
- Zero backlash and zero maintenance
- Extremely high acceleration (up to 10G)
- Velocities up to 5 m/s
- Sub-micron positioning accuracy
- Infinite stroke length capability (modular segments)
DDR Motors (Direct Drive Rotary) are high-torque rotary actuators that eliminate the need for gearboxes:
Key advantages:
- High torque: Direct coupling provides maximum torque transmission
- High positioning accuracy: No gearbox backlash or windup
- Zero maintenance: No gears, belts, or couplings to wear out
- High stiffness: Excellent dynamic response
- Compact design: Reduced system footprint
Applications:
- Rotary indexing tables
- Robot joints and wrists
- Precision positioning stages
- Antenna positioning systems
- Medical imaging equipment (CT scanners)
Yes, our Micro Series Electric Mini Linear Actuators are designed for compact, precision applications:
Features:
- Compact body size (as small as 30mm width)
- Short stroke lengths (10mm to 300mm)
- Lightweight design (under 1kg)
- Low power consumption
- Quiet operation
Typical applications:
- Laboratory automation and diagnostic equipment
- Medical devices (surgical robots, patient beds)
- Optical alignment systems
- 3D printers and small CNC machines
- Consumer electronics assembly
Installation & Setup
Basic installation requires standard hand tools:
- Hex keys - Provided with each actuator
- Torque wrench - For proper bolt tightening
- Dial indicator - For alignment verification
- Thread locker - For securing fasteners
- Level - For checking mounting surface
- Measuring tools - Calipers, rulers for positioning
Specific tool requirements vary by model. Detailed installation guides are included with each product and available in our downloads section.
Proper alignment is critical for optimal performance and longevity. Misalignment can cause:
- Premature wear of components
- Increased friction and power consumption
- Reduced accuracy and repeatability
- Unusual noise during operation
- Potential system failure
Alignment specifications:
- Parallelism: within 0.05mm/m
- Perpendicularity: within 0.02mm/m
- Flatness of mounting surface: within 0.1mm/m
Our installation guide provides step-by-step alignment procedures with diagrams.
We provide comprehensive installation support:
- Documentation: Detailed installation guides and video tutorials
- Remote support: Technical assistance via phone, email, or video call
- On-site support: For large projects, we can arrange on-site installation support and commissioning services
On-site services include:
- Installation supervision
- Alignment and calibration
- System testing and optimization
- Operator training
Contact our sales team to discuss installation requirements for your project. Additional fees may apply for on-site services.
Troubleshooting
Unusual noise may indicate several issues. Follow this diagnostic checklist:
- Check alignment: Verify mounting parallelism with dial indicator (should be within 0.05mm/m)
- Check lubrication: Apply recommended grease if insufficient
- Verify load: Ensure payload is within specifications
- Inspect components: Look for visible damage to screw, nut, or belt
- Check fasteners: Tighten all mounting bolts to specified torque
- Test at low speed: Run actuator slowly to identify noise source
If noise persists: Contact our technical support for diagnosis. Provide details about when the noise occurs (startup, running, specific positions) to help us diagnose the issue.
Precision issues may result from:
- Backlash in drive system: Check coupling and transmission for play
- Motor tuning: Verify acceleration/deceleration parameters
- Mechanical binding: Ensure smooth movement throughout stroke
- Thermal expansion: Allow warm-up time for high-precision applications
- Mounting issues: Check alignment and rigidity of mounting structure
- Controller settings: Verify steps/mm or encoder resolution settings
Recommended actions:
- Perform calibration routine
- Check and adjust controller parameters
- Verify mechanical alignment
- Contact our engineers for system optimization
Some heat generation is normal during operation. Here's what to know:
- Normal operating temperature: 40-60°C above ambient temperature
- Concern threshold: Surface temperature > 80°C
Excessive heat may indicate:
- Overloading - verify payload is within specifications
- Incorrect current settings - check motor driver configuration
- Inadequate ventilation - ensure proper airflow around motor
- Duty cycle exceeding specifications - reduce operating time or add cooling
Solutions:
- Add external cooling (fan or heat sink)
- Reduce duty cycle or add rest periods
- Verify motor sizing for application
- Contact us for motor upgrade options
Follow this systematic troubleshooting guide:
- Check power supply: Verify correct voltage and current are being supplied
- Check connections: Ensure all cables are securely connected
- Check limit switches: Verify actuator is not at travel limit
- Check controller: Verify controller is sending correct signals
- Check for mechanical obstruction: Look for physical blockages
- Test motor separately: Disconnect from actuator to verify motor function
- Check brake (if equipped): Ensure brake is releasing properly
If none of these steps resolve the issue, contact our technical support with details about your setup and any error codes displayed.
Maintenance
Lubrication intervals depend on operating conditions:
| Application Type | Interval |
|---|---|
| Standard applications | Every 1000km or 6 months |
| High-speed/duty applications | Every 500km or 3 months |
| Clean room environments | Use specified lubricants only |
| Harsh environments (dust, moisture) | Every 250km or 1 month |
Important notes:
- Always use manufacturer-recommended grease
- Over-lubrication can attract contaminants and reduce performance
- Clean old grease before applying new lubricant
- Record all maintenance activities for warranty purposes
Regular maintenance checklist:
| Frequency | Task |
|---|---|
| Monthly | Visual inspection for damage, loose fasteners, wear |
| Quarterly | Accuracy verification - test positioning repeatability |
| Semi-annually | Lubrication per schedule, cable/hose inspection |
| Annually | Complete system inspection, performance testing |
Additional tasks:
- Clean to remove debris and contaminants
- Check and adjust belt tension (belt driven models)
- Verify limit switch operation
- Test emergency stop function
Document all maintenance activities for warranty purposes.
Under normal operating conditions with proper maintenance:
| Actuator Type | Design Life |
|---|---|
| Ball screw actuators | 20,000 - 50,000 km |
| Belt driven actuators | 10,000 - 20,000 km |
| Linear motor actuators | 50,000+ km |
Factors affecting service life:
- Load capacity and distribution
- Operating speed and acceleration
- Environmental conditions (temperature, dust, humidity)
- Maintenance practices
- Mounting alignment and rigidity
Regular maintenance and proper operation can significantly extend service life.
User-performed maintenance:
- Lubrication and cleaning
- Belt tension adjustment
- Visual inspections
- Cable and connection checks
Factory service required for:
- Bearing replacement
- Ball screw service
- Seal replacement
- Internal component repair
Important: Unauthorized disassembly voids warranty. Contact our service center for professional repair. We offer:
- Quick turnaround repair services (5-7 business days)
- Genuine replacement parts
- 90-day warranty on repaired units
- Performance testing after repair
Ordering & Shipping
Our MOQ policy:
- Standard products: 1 unit minimum
- Customized products: 5-10 units (depending on complexity)
- Sample orders: Welcome for evaluation purposes
Volume discounts: Available for bulk orders. Contact our sales team for pricing tiers.
We encourage customers to order samples first to evaluate product quality and performance before placing larger orders.
Lead times vary by product type and order size:
| Order Type | Lead Time |
|---|---|
| Standard products (in stock) | 3-7 business days |
| Customized products | 2-4 weeks |
| Large volume orders | 4-6 weeks |
| Rush orders | Available with additional fees |
Contact us for specific lead times based on your requirements. We maintain inventory of popular models for faster delivery.
Standard operating range: -10°C to +60°C
Special versions available:
- Low temperature version: -40°C to +60°C
- Special lubricants for cold operation
- Low-temperature seals
- High temperature version: +60°C to +120°C
- Heat-resistant components
- High-temperature lubricants
Additional versions available:
- Clean room versions
- Food grade versions
- Chemical resistant versions
Contact our engineering team to discuss your specific environmental requirements.
Still Have Questions?
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