Models 42-107, 42-105, & 42-103: High-Speed Long-Stroke Linear Actuators
The Harold Beck Group 42 series offers a high-performance solution for industrial motion control requiring high-speed, long-stroke linear actuation. Engineered to eliminate the high maintenance and environmental risks associated with hydraulic and pneumatic cylinders, these electric actuators provide precise positioning over extended travel lengths. Designed for 100% continuous duty, Models 42-107, 42-105, and 42-103 ensure your critical linear valve and damper applications remain stable and responsive without the risk of thermal degradation or positioning drift.
Durability is built into every component of the Group 42 design, featuring a ruggedized gear train and a weatherproof NEMA 4X enclosure that thrives in harsh industrial settings. These actuators integrate advanced digital control modules for seamless calibration and real-time diagnostic feedback, ensuring absolute accuracy and zero-backlash performance. By delivering consistent thrust and maintenance-free operation, the Group 42 series provides a reliable, energy-efficient alternative for modern automation, reducing total cost of ownership and maximizing process uptime.
Long-Stroke Performance and Control Features:
- • High-speed linear travel with long-stroke capabilities for extensive industrial motion control.
- • Continuous-duty motor design prevents overheating during constant modulation cycles.
- • Maintenance-free gear train eliminates the leaks and air-quality issues of fluid power systems.
- • Advanced digital diagnostics and HART compatibility for simplified field calibration.
- • Precision positioning with zero-backlash performance for critical flow and air control.
- • Rugged NEMA 4X aluminum housing provides superior protection in extreme environments.
AVAILABLE THRUST AND TIMING COMBINATIONS FOR THE MODELS 42-107, 42-105, & 42-103
(LBF)
(INCHES)
(SECONDS/INCH)
Electronics Used on Control Option 9
Beck’s DCM-2 provides modulating control in response to standard control system signals.
Notable features include:
- Convenient user interface for calibration and drive status.
- HART® compatibility.
- Compatible with common asset management systems.
- Receives control signals directly, eliminating the need for contact protection devices, relays, switches and reversing starters.
- Designed to operate continuously at temperatures from -40º F to 185º F (-40° to 85° C).
- Initiates shaft movement in steps ranging from 0.10% to 0.25% of span, depending on the timing of the gear train.
Beck’s patented CPS technology has been providing reliable control feedback with infinite resolution in our products for many years.
- Utilizes a unique ferrite magnetic design with no contacting or wiping surfaces to wear or intermittently lose contact.
- The ferrite rotor is driven directly by the output shaft through anti-backlash gearing.
- A 4–20 mA position feedback signal is available for remote indication.
Electronics Used on Control Option 7
The 42-107 electronics package has a 4-20 mA modulating control board with position feedback.
The 42-107 has time-proven analog electronics on-board for simple, reliable, no-frills positioning and feedback of the drive.
A stall alarm contact and two auxiliary limit switches for position indication are integral features for the model 42-107.
Electronics Used on Control Option 5
The 42-105 is equipped with similar analog electronics to the 42-107, but requires 120 VAC pulsed control instead of 4-20 mA. It allows direct AC control of the drive’s motor for either PAT type modulation or simple multi-position
control. The 42-105 provides a 4-20 mA position feedback and is equipped with two auxiliary limit switches for position indication.
Electronics Used on Control Option 3
The 42-103 is intended for simple open/close operation. Direct AC to the motor will drive the unit to it fully open or fully closed position. Limit switches at each end of travel will stop the drive and may also be used for external
signaling.
FACTORY CALIBRATION
All Beck drives are set-up and calibrated to the customer specification. No electrical adjustments are required before installation. Additional features available on Beck control electronics

