CSWX Compact ServoWeld® Integrated Actuators

ServoWeld® CSWX integrated servo spot welding actuator offers high performance in a compact package.

The Compact ServoWeld® Actuator (CSWX) is the latest generation of ServoWeld actuators offering high force capability in a smaller package. Its modular design allows the CSWX to more easily adapt to project variability and supports our global manufacturing strategy. Tolomatic’s ServoWeld family of lighter weight integrated servo motor actuators for resistance spot welding (RSW) provide a cost-effective actuator design and best-in-class performance. 

  • 30+ million welds in typical welding applications with proper maintenance 
  • Forces to 4,047 lbf (18 kN) 
  • Skewed motor windings for minimized motor cogging for high force repeatability 
  • Standard roller screw with high dynamic load rating 
  • Water Cooling and Force feedback options 
  • Compact actuator design 

Features & Ordering

Download the CSWX Brochure for full details on features

CSWX Brochure

CSWX Features

CSWX Ordering

Specifications

CSWX Motor Specs & Brakes

CSWX Detailed Specifications

Table 1: Performance & Mechanical Specifications:

Series CSWX
Frame Size mm 90.0
in 3.54
Motor Winding V23 / V43 V24 / V44
Nut/Screw RN05XR RN10 RN05XR RN10
Screw Lead mm 5.0 10.0 5.0 10.0
Peak Force kN 15.8 7.9 18.0 10.5
lbf 3560 1780 4047 2350
Max. Velocity mm/sec 342 / 350 683 / 700 350 700
in/sec 13.5 / 13.8 26.9 / 27.6 13.8 27.6
Screw DLR
(Dynamic Load Rating)
kN 91.7 76.4 91.7 76.4
lbf 20,623 17,175 20,623 17,175
Weight* kg 10.9 10.9 11.4 11.4
lbf 24.0 24.0 25.1 25.1
Stroke mm 160 160 160 160
in 6.3 6.3 6.3 6.3
Base Inertia kg-cm2 5.5 5.5 6.5 6.5
lb-in 1.9 1.9 2.2 2.2
Max. Side Load
(150 mm )
N 75
lbf 17
Ambient Temp. Range** °C 0 to 50
°F 32 to 122
IP Rating Standard IP65 (static)
Agency Listings European Conformity, Underwriters Laboratories, & Ingress Protection Rating 65

*Weight varies per feedback device or mounting option.

**From 0-10°C (32-50°F), additional startup procedure may be required for optimal performance. See user manual for details.

Table 2: CSWX Weights:

Weight Summary:

Stroke Weight
Min. Max.
160 mm kg 10.24 12.84
6.3 in lb 22.57 28.31
200 mm kg 10.96 13.64
7.9 in lb 24.16 30.07
250 mm kg 11.86 14.64
9.8 in lb 26.14 32.28
300 mm kg 12.76 15.64
11.8 in lb 28.12 34.48

Actuator Base Weight* Add For Head Options Round Rod Add For Stroke Length Double D Rod Add For Stroke Length
Round Rod +94mm Head Dbl-D +90mm Head Dbl-D +94mm Head 200 mm (7.9 in) 250 mm (9.8 in) 300 mm (11.8) 200 mm (7.9 in) 250 mm (9.8 in) 300 mm (11.8)
kg 9.661 0.028 0.238 0.273 0.72 1.62 2.52 0.80 1.80 2.80
lb 21.3 0.06 0.52 0.6 1.59 3.57 5.56 1.76 3.97 6.17

*3 Stack Motor, Round Rod, 90mm Head, RN05, 160mm Stroke

Add For Screw Type Add For FeedbackDevice Add For Option
RN05xR RN10 Kuka ABB Fanuc A1000/A128 Fanuc A64 Covered Sick 4-Stack Motor Brake Water Cooling Trunnion
kg 0.066 0.076 0.816 0.864 0.576 0.933 0.66 0.63 0.505 0.183 0.579
lb 0.14 0.17 1.8 1.91 1.27 2.06 1.46 1.39 1.11 0.4 1.28

Table 3: Motor Specifications:

CSWX

Series CSW_
Motor Winding / Motor Voltage _V23 _V43 _V24 _V44
Torque Constant (K t ) N-m/A Peak 0.66 1.27 0.64 1.28
in-lb/A Peak 5.8 11.3 5.7 11.4
Voltage Constant (K e ) V/K rpm Peak 79.8 154 77.6 155.1
Stall Torque Radiant Cooled N-m 4.3 4.3 5.7 5.7
in-lb 38.1 38.1 50.1 50.1
Water Cooled N-m 9.7 9.7 13.4 13.4
in-lb 86.1 86.1 118.1 118.1
Continuous Stall Current Radiant Cooled A RMS 5.2 2.6 7.2 3.6
Water Cooled A RMS 12.3 6.1 17.3 8.7
Peak Torque N-m 16.6 16.6 21.9 21.9
in-lb 146.8 146.8 194.1 194.1
Peak Current A RMS 20.3 10.1 29.0 14.5
Resistance Ohms 2.07 8.28 1.14 4.56
Inductance mH 3.80 15.00 2.42 9.82
Bus Voltage V RMS 230 460 230 460
Speed @ Rated V RPM 4100 4200 4200 4200
No. of Poles 8 8 8 8

Table 4: Brake Specifications:

Series CSW_
Rotor Inertia gm-cm2 260
oz-in2 1.422
Current Amp 0.67
Holding Torque N-m 5.0
in-lb 44
Engage Time mSec 35
Engage Time with diode mSec 80
Disengage Time mSec 25
Voltage Vdc 24

Brake Considerations:

An un-powered SW will require a brake to maintain its position if the force on the actuator exceeds Back Drive Force
listed in Table 1. A brake can be used with the actuator to keep it from backdriving, typically in vertical applications.
A brake may be used for safety reasons or for energy savings allowing the actuator to hold position when un-powered.
NOTE: The optional Spring-Applied / Electronically-Released Brake requires 24V power.

Dimensions

CSW & CSWX Dimensions

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Success Stories

Auto Body Spot Welding (CSWX)

Challenge: Resistance spot welding (RSW) chassis
Product Family: Electric Rod Style Actuator
Product Used: CSWX

Additional CSWX information

The Compact ServoWeld® Actuator (CSWX) is the latest generation of ServoWeld actuators offering high force capability in a smaller package. Its modular design allows the CSWX to more easily adapt to project variability and supports our global manufacturing strategy. Tolomatic’s ServoWeld family of lighter weight integrated servo motor actuators for resistance spot welding (RSW) provide a cost-effective actuator design and best-in-class performance.

CSWX integrated servo motor actuators offer:
  • 30+ million welds in typical welding applications with proper maintenance
  • Standard roller screw with highest dynamic load rating for more welds over competing roller screws, ball screws or pneumatic actuators
  • Skewed motor windings designed for welding minimizes motor cogging for the best force repeatability
  • Compact actuator design
  • Forces to 4,047 lbf (18 kN)
  • Optional Features
    • Water cooling
    • Force feedback

Learn about roller screw and ball screw technologies