VOITH SMR Control Servo Motor

Voith SMR control servo motor

Description:

The VOITH SMR Control Servo Motor is a high-precision actuator designed for demanding hydraulic and industrial automation systems. With its robust construction, rapid response behavior, and excellent position accuracy, the SMR series ensures reliable performance in servo-hydraulic control loops. The motor is engineered for long service life, stable thermal characteristics, and seamless integration into advanced control systems used in heavy machinery, paper production, energy, and industrial processing applications.

share:

Advantages of VOITH SMR Servo Motor

  • High Dynamic Response — Supports precise actuation in fast servo loops.

  • Excellent Repeatability & Control Accuracy — Ideal for closed-loop hydraulic controls.

  • Heavy-Duty Build — Suitable for high-load industrial applications.

  • Low Maintenance Design — Long operational life with minimal downtime.

  • Compact Structure — Easy system integration, even in restricted installation spaces.

  • Optimized for VOITH Hydraulic Systems — Ensures maximum compatibility and efficiency.

Datasheet

Parameter Specification / Value
Function / Type Linear electro-hydraulic actuator (servo motor for valve / flow control)
Control input 4 – 20 mA standard control signal
Supply voltage 24 VDC
Current consumption ~ 1.0 A (max 3.0 A for < 1 s)
Effective force (max) Up to 500 kN [≈ 112,000 lbf]
Max. hydraulic pressure Up to 200 bar [≈ 2,900 psi]
Full-stroke closing (trip) time < 0.3 s
Linearity (stroke vs signal) ± 0.15% of maximum stroke
Hysteresis 0.005% of maximum stroke
Reproducibility 0.015% of maximum stroke
Temperature drift (stroke) 0.04% of maximum stroke per °C
Hydraulic fluid (operating medium) Hydraulic oil per DIN 51524 or turbine oil per DIN 51515. Cleanliness class ISO-VG 4406: 16/13
Oil viscosity range ISO VG 32 to ISO VG 46
Protection class IP 65
Ambient operating temperature –20 to +80 °C (standard version)
Optional explosion-proof / hazardous-area rating ATEX (II 2G IIC T4, Ta = –20 to +60 °C) — other ratings on request
Safety / Redundancy options Redundant design available: position feedback system + way valve control magnets. Fail-safe operation via internal return spring in way valve (and in hydraulic cylinder for single-acting versions)
Mean Time Between Failures (MTBF) > 103 years (calculated per MIL-HDBK-217 and Siemens SN 29500; real-world data indicate equal or better reliability)
Typical application fields Control-valve actuation in steam turbines, gas turbines, compressors; retrofit of mechanical-hydraulic or pneumatic actuators; upgrade of older valve/actuator systems; various industrial hydraulic control applications