
GSWA04 ServoWeld® Servo Actuators
ServoWeld® GSWA44 and GSWA04 Series spot welding actuators provide the longest life (most weld) with highest force and efficiency.
The ServoWeld® GSWA44 and GSWA04 series actuators provide peak thrusts of 4,000 lbf (17.8 kN) for a variety of resistance spot welding gun applications (pinch guns, X guns, C guns). Utilizing a standard roller screw with the highest dynamic load rating, the GSWA44/04 are the longest lasting (most welds) spot welding actuators on the market. GSWA44/04 spot welding servo actuators are highly efficient, and its broad performance range allows it to easily handle multiple weld schedules and accommodate different materials / material thicknesses in resistance spot welding.
GSWA 44 and 04 spot welding actuators offer:
- 20+ million cycles with minimal maintenance
- Standard roller screw with highest dynamic load rating for more welds over competing roller screws, ball screws or pneumatic actuators
- ±3% force repeatability over life of actuator
- Light-weight actuator design
- Forces to 4,000 lbf (17.8 kN)
- Optional water cooling
- Integration for 7th axis operation with most global robot manufacturers
Features & Ordering
Download the GSWA04 Brochure for full details on features
ServoWeld® GSWA 04 & 44 Integrated Features
Specifications
| Specifications | Units | GSWA44 | GSWA04 |
|---|---|---|---|
| Maximum Stroke | in (mm) | 18 (457) | 6 (152) |
| Maximum Force | lbf (kN) | 3,300 (14.7) | 3,300 (14.7) |
| Maximum Speed | in/sec (mm/sec) | 23 (584) | 23 (584) |
GSWA Performance & Mechanical Specifications
| GSWA33, GSWA33-GUIDED | GSWA44, GSWA04 | GSWA55 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MV23/43 | MV22/42 | MV23/43 | ||||||||||
| Size | in | 3.3 | 4.4 | 5.6 | ||||||||
| mm | 83.0 | 111 | 142 | |||||||||
| Nut/Screw | RN04 | RN05 | RN10 | RN05 | RN10 | RN04 | RN05 | RN05 XR | RN10 | RN05 | RN10 | |
| Screw Lead | in | 0.157 | 0.197 | 0.397 | 0.197 | 0.397 | 0.157 | 0.197 | 0.197 | 0.397 | 0.197 | 0.397 |
| mm | 4.0 | 5.0 | 10.0 | 5.0 | 10.0 | 4.0 | 5.0 | 5.0 | 10.0 | 5.0 | 10.0 | |
| Peak Force | lbf | 2,500 | 2,500 | 1,306 | 3,261 / 2,882 | 1,630 / 1,441 | 4,000 | 3,300 | 4,000 | 2,500 | 8,243 | 4,121 |
| kN | 11.1 | 11.1 | 5.8 | 14.5 / 12.8 | 7.3 / 6.4 | 17.8 | 14.7 | 17.8 | 11.1 | 36.7 | 18.3 | |
| Max. Velocity | in/sec | 9.2 | 11.5 | 23.0 | 11.5 | 23.0 | 9.2 | 11.5 | 11.5 | 23.0 | 7.9 | 15.7 |
| mm/sec | 234 | 292 | 584 | 292 | 584 | 234 | 292 | 292 | 584 | 201 | 399 | |
| Screw Dynamic Load Rating | lbf | 9,240 | 12,050 | 10,611 | 16,479 | 17,175 | 15,107 | 16,479 | 20,623 | 17,175 | 21,716 | 36,149 |
| kN | 41.10 | 53.60 | 47.20 | 73.30 | 76.40 | 67.2 | 73.30 | 91.74 | 76.40 | 96.60 | 160.80 | |
| Nominal Back Drive Force | lbf | 98 | 78 | 39 | 91 | 46 | 114 | 91 | 91 | 46 | 152 | 76 |
| N | 436 | 347 | 173 | 405 | 205 | 507 | 405 | 405 | 205 | 676 | 338 | |
| Ambient Temp Range | °F | 50 to 122 | ||||||||||
| °C | 10 to 50 | |||||||||||
| IP Rating | Standard IP65 (static) | |||||||||||
| Agency Listings | CE, UL, & IP65 | |||||||||||
GSWA Weight, Stroke, Inertia
| GSWA33 | GSWA33-Guided | GSWA04 | GSWA44 | GSWA55 | |||
|---|---|---|---|---|---|---|---|
| MV23,43 | MV23,43 | MV22,42 | MV23,43 | MV23,43 | MV23,43 | ||
| Weight (with 6 in / 152 mm stroke) |
lb | 18.1 | 28.5 | 29.8 | 32.0 | 35.2 | 67.2 |
| kg | 8.2 | 12.9 | 13.5 | 14.5 | 16.0 | 30.5 | |
| Stroke | in | 6.0 to 18.0 | 6.0 to 9.0 | 6.0 | 6.0 | 6.0 to 18.0 | |
| mm | 152.4 to 451.2 | 152.4 to 228.6 | 152.4 | 152.4 | 152.4 to 451.2 | ||
| Weight per Unit of Stroke | lb/in | 0.6603 | 0.6603 | 1.1035 | 1.1035 | 1.1035 | 2.1115 |
| kg/mm | 0.0118 | 0.0118 | 0.0197 | 0.0197 | 0.0197 | 0.03771 | |
| Base Inertia | lb/in | 1.6723 | 1.6723 | 2.7716 | 3.3442 | 3.3442 | 3.3442 |
| kg-cm2 | 4.8997 | 4.8997 | 8.1108 | 9.7864 | 9.7864 | 9.7864 | |
| Inertia per Unit of Stroke | lb-in2/in | 0.00358 | 0.00358 | 0.00984 | 0.00984 | 0.00984 | 0.00984 |
| kg-cm2/mm | 0.00041 | 0.00041 | 0.00113 | 0.00113 | 0.00113 | 0.00113 | |
GSWA Motor Specifications
| GSWA33 | GSWA04 | GSWA44 | GSWA55 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| GSWA33, Guided | GSWA04 | |||||||||
| MV23 | MV43 | MV22 | MV42 | MV23 | MV43 | MV23 | MV43 | |||
| Bus Voltage | V RMS | 230 | 460 | 230 | 460 | 230 | 460 | 230 | 460 | |
| Torque Constant (kt) | in-lb/A Peak | 5.5 | 10.7 | 4.6 | 8.0 | 5.4 | 10.6 | 6.7 | 13.4 | |
| N-m/A Peak | 0.62 | 1.21 | 0.52 | 0.90 | 0.61 | 1.2 | 0.76 | 1.51 | ||
| Voltage Constant (ke) | V/Krpm Peak | 79.8 | 154 | 66.1 | 107.2 | 78.1 | 153.1 | 100 | 201 | |
| Continuous Stall Torque | No Water Cooling | in-lb | 39 | 38 | 48.8 | 43.0 | 74 | 75 | 112 | 112 |
| N-m | 4.4 | 4.3 | 5.5 | 4.9 | 8.4 | 8.5 | 12.7 | 12.7 | ||
| With Water Cooling | in-lb | 78 | 76 | 97.6 | 86 | 148 | 150 | NA | NA | |
| N-m | 8.8 | 8.6 | 11.0 | 9.7 | 16.7 | 17.0 | NA | NA | ||
| Continuous Stall Current | No Water Cooling | A RMS | 5.0 | 2.5 | 7.5 | 3.8 | 9.7 | 5.0 | 11.8 | 5.9 |
| With Water Cooling | A RMS | 10.0 | 5.0 | 15.0 | 7.6 | 19.4 | 10.0 | NA | NA | |
| Peak Torque | in-lb | 117 | 114 | 146 | 129 | 222 | 225 | 335 | 335 | |
| N-m | 13.2 | 12.9 | 16.5 | 14.6 | 25.1 | 25.4 | 37.8 | 37.8 | ||
| Peak Current | A RMS | 15 | 7.5 | 22.5 | 11.4 | 29.1 | 15.0 | 35.4 | 17.7 | |
| Resistance | Ohms | 2.07 | 8.3 | 0.9 | 4.2 | 0.58 | 2.32 | 0.57 | 2.93 | |
| Inductance | mH | 3.8 | 15.0 | 3.65 | 15.7 | 2.75 | 11.5 | 1.4 | 5.8 | |
| Speed @ Rated V | RPM | 3,500 | 2,400 | |||||||
| No. of Poles | 8 | |||||||||
GSWA Brake Specifications
| Series | GSWA33 | GSWA44 & GSWA04 | GSWA55 | |
|---|---|---|---|---|
| Rotor Inertia | oz-in2 | 0.400 | 1.307 | 1.171 |
| gm-cm2 | 73 | 239 | 214 | |
| Current | Amp | 0.43 | 0.67 | 0.66 |
| Holding Torque | in-lb | 35 | 89 | 145 |
| N-m | 4.0 | 9.0 | 16.4 | |
| Engage Time | mSec | 40 | 25 | 15 |
| Disengage Time | mSec | 50 | 35 | 25 |
| Voltage | Vdc | 24 | ||
Dimensions
ServoWeld® GSWA 44 Dimensions
ServoWeld® GSWA 04 Dimensions
Manuals & Part Sheets
Additional Resources
Download the GSWA Manual
Information Center:
Application Checklists
Catalogs & Brochures
- Corporate Overview-Linear Motion Solutions Brochure (English)
- SOLUCIONES DE CONTROL DE MOVIMIENTO (Spanish, Corporate Overview-Motion Control Solutions Brochure)
- 公司概述 (Chinese, Corporate Overview Brochure)
- Brochure sur l'entreprise Tolomatic (French, Corporate Overview-Linear Motion Solutions Brochure)
- ServoWeld® GSWA Actuators (English)
- ServoWeld® Actuadores Modelos GSWA (Spanish, ServoWeld® GSWA Actuators)
- ServoWeld® 电动缸 GSWA 型号 (Chinese, ServoWeld® GSWA Actuators)
- ServoWeld® GSWA Integrierte Servomotorantriebe (GSWA Brochure, German)
- Система ServoWeld® Электромеханический привод с встроенным двигателем GSWA с высоким тяговым усилием (Russian, ServoWeld® GSWA Actuators)
- Sistema Do ServoWeld® Acionador De Impulso Elevado De Motor Integral GSWA (Portuguese, ServoWeld® GSWA Actuators)
- ServoWeld® システム GSWA 一体化モーター 高推進力アクチュエータ (Japanese, ServoWeld® GSWA Actuators)
- ServoWeld® 장치 GSWA 통합 모터 고추력 작동기(Korean, ServoWeld® GSWA Actuators)
- Tolomatic 焊接解决方案 (Chinese, Welding Solutions)
- ServoWeld® Refurbishment and Remanufacturing Services
- Servicios de reacondicionamiento y refabricación de ServoWeld® (ServoWeld® Refurbishment and Remanufacturing Services-Spanish)
- ServoWeld® Aufarbeitungs- und Wiederaufarbeitungsservices (ServoWeld Refurbishment and Remanufacturing Services brochure, German)
- ServoWeld® 的翻新和再制造服务 (ServoWeld® Refurbishment and Remanufacturing Services-Chinese)
- ServoWeld with Integrated Force Sensor, brochure
- ServoWeld mit integriertem Kraftsensor (DE- ServoWeld w/Force Sensor brochure)
- 带内置式力传感器的 ServoWeld (ServoWeld Force Sensor brochure ^CN)
- All Electric Projection Welding Brochure
- Tolomatic Welding Solutions (English)
- Tolomatic SOLUCIONES DE SOLDADURA (Spanish, Tolomatic Welding Solutions)
- Tolomatic Lösungen für Widerstandsschweißen (Tolomatic Welding Solutions; German)
- Automotive Applications Brochure
- 汽车行业应用手册 Brochure (Chinese: Automotive Applications Brochure)
- Aplicaciounes de la Ind. Automotriz (Auto Appl SP)
- Restore - ServoWeld Repair Program brochure
- Restore-ServoWeld Repair Program brochure^CN
- RESTORE WIEDERHERSTELLEN (Flyer DE)
- RESTORE (RESTAURAR); (flyer, ES)
- UNTERNEHMENSÜBERSICHT (German, Corporate Overview)
Certifications
Guides
Terms & Conditions
Videos
White Papers
- Top Ten Tips: How to specify electric rod-style actuators for optimal performance, reliability and efficiency
- Servo spot welding offers superior performance and lower lifetime costs for auto manufacturing
- Electric actuators vs. pneumatic cylinders: A comparison based on total cost of ownership
- Select the right linear actuator: Making sense of manufacturer specifications
- Comparing traditional and integrated rod-style linear actuators: How to choose the best solution for motion control applications
- Rules of actuator and guide alignment in linear motion systems
- IP ratings and the manufacturing environment: How to apply linear actuators for quality, safety and long service life.
- Minimizing electrical noise in actuator drive systems for maximum reliability and performance
- Introduction to accuracy and repeatability in linear motion systems
- 伺服点焊为汽车制造业提供卓越的性能和更低廉的寿命周期成本 (Chinese, Whitepaper: Servo spot welding offers superior performance and lower lifetime costs for auto manufacturing)
- A technical comparison: Performance of pneumatic cylinders and electric rod actuators
- Electric actuator technology comparison: Integrated and traditional designs
- How roller-screw and ball-screw actuators compare in high-force applications
- Actuadores eléctricos con vástago frente a cilindros hidráulicos: una comparación de los pros y los contras de cada tecnología (Spanish - White paper - Electric vs Hydraulic Actuators)
- Servomotorisches Punktschweißen bietet für die Autoproduktion herausragende Leistungswerte und senkt die Wartungskosten (GERMAN, Whitepaper, Servo spot welding offers superior performance and lower))
- Understanding Servo Linear Actuator Systems
Success Stories
Additional GSWA information
The ServoWeld® GSWA44 and GSWA04 series actuators provide peak thrusts of 4,000 lbf (17.8 kN) for a variety of resistance spot welding gun applications (pinch guns, X guns, C guns). Utilizing a standard roller screw with the highest dynamic load rating, the GSWA44/04 are the longest lasting (most welds) spot welding actuators on the market. GSWA44/04 spot welding servo actuators are highly efficient and its broad performance range allows it to easily handle multiple weld schedules and accommodate different materials / material thicknesses in resistance spot welding.
GSWA 44 and 04 spot welding actuators offer:
- 20+ million cycles with minimal maintenance
- Standard roller screw with highest dynamic load rating for more welds over competing roller screws, ball screws or pneumatic actuators
- ±3% force repeatability over life of actuator
- Light-weight actuator design
- Forces to 4,000 lbf (17.8 kN)
- Optional water cooling
- Integration for 7th axis operation with most global robot manufacturers

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