{"title":"Cematic Electric Linear Actuators | Globe and Gate Valves","description":"\u003ch2\u003eCematic Electric Linear Actuators — Precise Linear Movement for Globe, Gate Valves, and Control Devices\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003eelectric linear actuator\u003c\/strong\u003e is the correct type of actuator when the valve to be automated does not operate by rotational turning but by axial stem displacement: globe valves with a disc plug on a conical seat, non-rising stem gate valves, linear diaphragm valves, pressure regulators, and any other control device that requires a controlled push or pull force to modify its position. Where the quarter-turn actuator converts its energy into rotation, the linear actuator converts it into linear force — thrust measured in kilograms-force (kgf) or pounds-force (lbf) applied directly to the valve stem.\n\u003c\/p\u003e\n\u003cp\u003e\n  \u003cstrong\u003eCematic linear actuators\u003c\/strong\u003e are available in two configurations depending on the installation environment: the standard version (non-classified area, IP67 protection) and the \u003cstrong\u003eEx-proof version with ATEX, IECEx, and CSA certification\u003c\/strong\u003e for installations in Zone 1 and Zone 2 with the presence of flammable gases or dusts. Both configurations share the same operating principle and the same control and communication capabilities, with the difference being in the design and certification of the enclosure.\n\u003c\/p\u003e\n\n\u003ch3\u003eWhen is a linear actuator needed instead of a quarter-turn one?\u003c\/h3\u003e\n\u003cp\u003e\n  The first question when specifying an actuator is always the type of valve movement:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eGlobe valve:\u003c\/strong\u003e Its obturating disc moves perpendicular to the flow axis — it opens and closes by vertical linear displacement of the stem. Requires a linear actuator. It is the most commonly used control valve in industrial processes due to its linear or equal percentage flow characteristic and its precise regulation capability.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eNon-rising stem (NRS) gate valve:\u003c\/strong\u003e The wedge moves linearly without rotating. Requires a linear actuator. The quarter-turn actuator cannot operate it because there is no direct connection interface to the rotating stem.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eLinear diaphragm valve:\u003c\/strong\u003e The diaphragm is compressed or released by the displacement of the actuator stem. Requires a linear actuator.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003ePressure regulators and process control valves:\u003c\/strong\u003e Most conventional process control valves have linear stem movement with a stroke of 25 to 100 mm.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eBall or butterfly valve:\u003c\/strong\u003e 90° rotational movement → Requires a \u003ca href=\"\/en\/collections\/actuadores-electricos-1-4-de-vuelta-para-valvulas\"\u003equarter-turn\u003c\/a\u003e actuator, not linear.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOperating principle of the Cematic electric linear actuator\u003c\/h3\u003e\n\u003cp\u003e\n  The Cematic linear actuator converts the rotational movement of the electric motor into linear displacement using a lead screw or trapezoidal screw mechanism integrated into the housing. The operating cycle is as follows:\n\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal reception:\u003c\/strong\u003e The DCS or PLC's PID controller sends the setpoint signal — analog 4–20 mA for modulating control, or digital signal for full open\/close.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC motor actuation:\u003c\/strong\u003e The DC motor with 75% duty cycle rotates in the direction corresponding to the required movement (stem extension or retraction).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotation → translation conversion:\u003c\/strong\u003e The internal transmission converts the motor's rotation into linear displacement of the output stem at a constant speed of 0.46 mm\/second.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProportional positioning:\u003c\/strong\u003e The modulating control unit compares the actual stem position (measured by the internal potentiometer) with the received setpoint and adjusts the motor's movement until the actual position matches the setpoint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeedback to the control system:\u003c\/strong\u003e The analog output signal (4–20 mA or 2–10 V) confirms the actual stem position to the controller in real-time, closing the control loop.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverload protection:\u003c\/strong\u003e Integrated force switches detect when the thrust force exceeds the actuator's nominal value — due to a mechanical obstruction, a clogged seat, or a stuck valve — and automatically cut off the motor, protecting both the actuator and the valve's internal components.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eTechnical characteristics of Cematic linear actuators\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType of movement:\u003c\/strong\u003e Linear — extension and retraction of the output stem\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLinear speed:\u003c\/strong\u003e 0.46 mm\/sec (0.018 in\/sec) constant across all models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor:\u003c\/strong\u003e DC with 75% duty cycle — the highest duty cycle in the Cematic range, suitable for control loops with frequent position adjustments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModulating control:\u003c\/strong\u003e Factory included as standard on all models. Accepted analog inputs: 4–20 mA, 1–5 V, 2–10 V. Position feedback output: 4–20 mA and 2–10 V.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForce overload protection:\u003c\/strong\u003e 2 integrated force switches that cut off the motor in case of over-torque — standard protection on all models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable stroke:\u003c\/strong\u003e The length of the stem's travel can be adjusted in the field to adapt to the specific stroke of the valve to be operated — no specific model required for each stroke length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve interface:\u003c\/strong\u003e ISO 5210 — the international standard for the mounting interface between linear actuators and process valves. Ensures direct compatibility with globe and gate valves from all manufacturers that comply with the standard.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual override:\u003c\/strong\u003e Manual operating handwheel integrated into all models for emergency operation without electrical supply. The handwheel allows manual stem movement in case of power failure without dismounting the actuator from the valve.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGears:\u003c\/strong\u003e High-alloy steel with self-locking system that prevents position rollback due to vibration, differential pressure variation, or changes in valve load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor insulation:\u003c\/strong\u003e Class F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard IP protection:\u003c\/strong\u003e IP67 — dust-tight and temporary immersion up to 1 meter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP protection for Ex-proof version:\u003c\/strong\u003e IP68 — 7 meters for 72 hours\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -30 °C to +70 °C standard; -30 °C to +65 °C for CSA version for North America\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking relative humidity:\u003c\/strong\u003e 30% to 95%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e Die-cast aluminum with epoxy polyester paint\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable models — force, weight, and maximum stroke\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eModel\u003c\/th\u003e\n      \u003cth\u003eThrust (kgf)\u003c\/th\u003e\n      \u003cth\u003eThrust (lbf)\u003c\/th\u003e\n      \u003cth\u003eThrust (kN)\u003c\/th\u003e\n      \u003cth\u003eMotor Power (W)\u003c\/th\u003e\n      \u003cth\u003eSpeed (mm\/sec)\u003c\/th\u003e\n      \u003cth\u003eWeight (kg)\u003c\/th\u003e\n      \u003cth\u003eMax. Stroke (mm)\u003c\/th\u003e\n      \u003cth\u003eMax. Stroke (inch)\u003c\/th\u003e\n      \u003cth\u003eISO 5210\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eLE-250\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e250\u003c\/td\u003e\n      \u003ctd\u003e550\u003c\/td\u003e\n      \u003ctd\u003e2.45\u003c\/td\u003e\n      \u003ctd\u003e15\u003c\/td\u003e\n      \u003ctd\u003e0.46\u003c\/td\u003e\n      \u003ctd\u003e10.5\u003c\/td\u003e\n      \u003ctd\u003e50\u003c\/td\u003e\n      \u003ctd\u003e2\"\u003c\/td\u003e\n      \u003ctd\u003eF07\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eLE-500\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e500\u003c\/td\u003e\n      \u003ctd\u003e1,100\u003c\/td\u003e\n      \u003ctd\u003e4.9\u003c\/td\u003e\n      \u003ctd\u003e15\u003c\/td\u003e\n      \u003ctd\u003e0.46\u003c\/td\u003e\n      \u003ctd\u003e10.5\u003c\/td\u003e\n      \u003ctd\u003e50\u003c\/td\u003e\n      \u003ctd\u003e2\"\u003c\/td\u003e\n      \u003ctd\u003eF07\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eLE-1000\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1,000\u003c\/td\u003e\n      \u003ctd\u003e2,205\u003c\/td\u003e\n      \u003ctd\u003e9.805\u003c\/td\u003e\n      \u003ctd\u003e35\u003c\/td\u003e\n      \u003ctd\u003e0.46\u003c\/td\u003e\n      \u003ctd\u003e31.5\u003c\/td\u003e\n      \u003ctd\u003e100\u003c\/td\u003e\n      \u003ctd\u003e4\"\u003c\/td\u003e\n      \u003ctd\u003eF10\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eLE-2000\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e2,000\u003c\/td\u003e\n      \u003ctd\u003e4,410\u003c\/td\u003e\n      \u003ctd\u003e19.615\u003c\/td\u003e\n      \u003ctd\u003e35\u003c\/td\u003e\n      \u003ctd\u003e0.46\u003c\/td\u003e\n      \u003ctd\u003e31.5\u003c\/td\u003e\n      \u003ctd\u003e100\u003c\/td\u003e\n      \u003ctd\u003e4\"\u003c\/td\u003e\n      \u003ctd\u003eF10\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eDisplacement speed based on 110 VAC \/ 60 Hz \/ 75% duty cycle.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eAvailable power supply voltages\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24 VDC:\u003c\/strong\u003e For powering from modern PLCs, regulated power supplies, and automation systems with standard DC power. Compatible with Allen-Bradley, Siemens, Mitsubishi, and Schneider control panels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e24 VAC:\u003c\/strong\u003e For building management systems (BMS) and HVAC that use 24 VAC transformers as a standard control source.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e110–120 VAC \/ 60 Hz:\u003c\/strong\u003e The most frequent mains voltage in industrial installations in Mexico. No need for additional transformer to power from standard control panels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e220–240 VAC \/ 50–60 Hz:\u003c\/strong\u003e For installations with two-phase supply or where distance to the panel causes unacceptable voltage drop at 110 VAC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eISO 5210 Interface — compatibility with valves from all manufacturers\u003c\/h3\u003e\n\u003cp\u003e\n  The \u003cstrong\u003eISO 5210\u003c\/strong\u003e standard is the linear equivalent of the rotary ISO 5211: it defines the mounting plate dimensions and the connection to the valve stem for linear motion actuators. This standardization ensures that the Cematic linear actuator mounts directly on globe and gate valves from any manufacturer that complies with the standard, without adapters or field machining. The two available interfaces are:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 5210 F07:\u003c\/strong\u003e For LE-250 and LE-500 models — globe valves DN25 to DN80 (1\" to 3\") and small to medium diameter gate valves\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO 5210 F10:\u003c\/strong\u003e For LE-1000 and LE-2000 models — globe valves DN100 to DN200 (4\" to 8\") and medium to large diameter gate valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eModulating control — why it's standard and not optional\u003c\/h3\u003e\n\u003cp\u003e\n  The decision to include factory modulating control in all models reflects the reality of linear actuator use: unlike the quarter-turn actuator — which in many applications only needs ON\/OFF — the linear actuator is mostly installed on globe valves that are the control element of a PID loop. In this context, modulating control is not an optional accessory but the main function of the actuator. The control signal data are:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput signal (controller setpoint):\u003c\/strong\u003e 4–20 mA \/ 1–5 V \/ 2–10 V — selectable according to the analog output type of the PID controller or DCS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeedback signal (actual position to controller):\u003c\/strong\u003e 4–20 mA and 2–10 V — the controller receives continuous confirmation of the actual stem position to close the control loop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePositioning accuracy:\u003c\/strong\u003e ±1–2% of the full stroke range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e Determined by the speed of 0.46 mm\/sec and the response time of the internal modulating controller\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExplosion-Proof (Ex-proof) Version — ATEX, IECEx, and CSA\u003c\/h3\u003e\n\u003cp\u003e\n  For installations in classified areas such as Zone 1 or Zone 2 (flammable gases) and Zone 21 or Zone 22 (combustible dusts), Cematic linear actuators are available in an explosion-proof version with the following certifications:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eATEX II 2 GD:\u003c\/strong\u003e Ex db IIB T4 Gb \/ Ex tb IIIC T130°C Db — for the European Union (standards EN IEC 60079-0, EN 60079-1, EN 60079-31)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIECEx:\u003c\/strong\u003e Ex db IIB T4 Gb \/ Ex tb IIIC T130°C Db — international recognition in over 50 countries\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCSA — Zones System:\u003c\/strong\u003e Class I Zone 1 Groups IIA\/IIB T4 \/ Class II Zone 21 Groups IIIA\/IIIB\/IIIC T130°C — for projects with North American requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n  The Ex-proof version raises the IP protection to \u003cstrong\u003eIP68 (7 meters \/ 72 hours)\u003c\/strong\u003e and has an operating temperature of -30 °C to +65 °C for the CSA version. \u003cstrong\u003eModbus RTU RS-485\u003c\/strong\u003e communication is available as an option in the Ex-proof version. For complete information on the Ex-proof version, consult the \u003ca href=\"\/en\/collections\/actuadores-ex-proof\"\u003eCematic explosion-proof actuators category\u003c\/a\u003e.\n\u003c\/p\u003e\n\n\u003ch3\u003eAvailable options and accessories\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eAnti-condensation heating resistor:\u003c\/strong\u003e Raises the internal temperature to prevent lubricant freezing and keep the interior dry in environments with high temperature variation. Not recommended if ambient temperature continuously exceeds 35 °C. Recommended in combination with the heater thermostat.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eHeater thermostat:\u003c\/strong\u003e Disconnects the resistor when the internal temperature exceeds 25 ±5 °C — optimizes the electrical consumption of the heating.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eModbus RTU RS-485 communication:\u003c\/strong\u003e Available in the Ex-proof version. Allows direct integration with SCADA and DCS systems without additional analog signals. Up to 32 actuators in a daisy chain over a single pair of RS-485 cables.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eOptional conduit entries:\u003c\/strong\u003e Standard 2 × ½\" NPT. Options: 2 × ¾\" NPT, 2 × M20, 2 × M25 — for compatibility with existing conduit systems in the installation.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSizing guide — how to select the correct model\u003c\/h3\u003e\n\u003cp\u003e\n  Selecting the correct linear actuator requires knowing three parameters of the process and the valve:\n\u003c\/p\u003e\n\n\u003ch4\u003e1. Required operating force (Thrust)\u003c\/h4\u003e\n\u003cp\u003e\n  The operating force required to move the stem depends on the valve type, diameter, working differential pressure, and seat type. As a general reference:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGlobe valves DN25–DN50 (1\"–2\") at pressures up to 10 bar: 250–500 kgf → \u003cstrong\u003eLE-250 or LE-500\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eGlobe valves DN65–DN100 (2½\"–4\") at pressures up to 16 bar: 500–1,000 kgf → \u003cstrong\u003eLE-500 or LE-1000\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eGlobe valves DN125–DN200 (5\"–8\") or high differential pressure: 1,000–2,000 kgf → \u003cstrong\u003eLE-1000 or LE-2000\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n  \u003cem\u003eAlways apply a minimum safety factor of 1.25 over the valve's maximum operating force. The valve manufacturer provides the required force curve as a function of stem position and differential pressure — request it before specifying the actuator.\u003c\/em\u003e\n\u003c\/p\u003e\n\n\u003ch4\u003e2. Valve Stroke\u003c\/h4\u003e\n\u003cp\u003e\n  Stroke is the total displacement of the stem from fully closed to fully open position. LE-250 and LE-500 models have a maximum stroke of 50 mm (2 inches) — sufficient for globe valves up to DN100 in most standard designs. LE-1000 and LE-2000 models have a maximum stroke of 100 mm (4 inches) for larger diameter valves or designs with longer stem travel. The stroke is adjustable in the field within the maximum range of the selected model.\n\u003c\/p\u003e\n\n\u003ch4\u003e3. Available voltage at the installation point\u003c\/h4\u003e\n\u003cp\u003e\n  Verify the actual voltage of the control panel or the nearest power supply point: 24 VDC, 24 VAC, 110 VAC, or 220 VAC. An actuator specified with incorrect voltage can result in irreversible motor damage.\n\u003c\/p\u003e\n\u003cp\u003e\n  \u003cem\u003eDon't have your valve's force data? Share the manufacturer, model, diameter, and working pressure with us, and our technical team will calculate the required force and recommend the correct model at no additional cost.\u003c\/em\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003eLinear actuator vs. pneumatic actuator — when to choose electric?\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eCriterion\u003c\/th\u003e\n      \u003cth\u003eElectric Linear Actuator\u003c\/th\u003e\n      \u003cth\u003ePneumatic Linear Actuator\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEnergy source\u003c\/td\u003e\n      \u003ctd\u003e✅ Electrical wiring only\u003c\/td\u003e\n      \u003ctd\u003eCompressed air network 4–8 bar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNative modulating control\u003c\/td\u003e\n      \u003ctd\u003e✅ 4–20 mA standard from factory\u003c\/td\u003e\n      \u003ctd\u003eRequires additional positioner\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eResponse speed\u003c\/td\u003e\n      \u003ctd\u003e0.46 mm\/sec — moderate\u003c\/td\u003e\n      \u003ctd\u003e✅ Higher speed available\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePosition feedback\u003c\/td\u003e\n      \u003ctd\u003e✅ 4–20 mA included from factory\u003c\/td\u003e\n      \u003ctd\u003eRequires external position transmitter\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDigital communication\u003c\/td\u003e\n      \u003ctd\u003e✅ Modbus RTU (Ex version)\u003c\/td\u003e\n      \u003ctd\u003eRequires HART\/Profibus positioner\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInstallation without compressor\u003c\/td\u003e\n      \u003ctd\u003e✅ Cable only — no air piping\u003c\/td\u003e\n      \u003ctd\u003eRequires pneumatic network to the point\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eATEX Zone 1 areas\u003c\/td\u003e\n      \u003ctd\u003e✅ Ex-proof version available\u003c\/td\u003e\n      \u003ctd\u003e✅ Intrinsically safe actuator + Ex solenoid\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHigh adjustment frequency (fast PID)\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Limited by 0.46 mm\/sec speed\u003c\/td\u003e\n      \u003ctd\u003e✅ Higher response speed\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMechanical spring fail-safe\u003c\/td\u003e\n      \u003ctd\u003e⚠️ No spring — fail-last standard\u003c\/td\u003e\n      \u003ctd\u003e✅ Mechanical spring available\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\n  \u003cstrong\u003eChoose electric linear actuator when:\u003c\/strong\u003e No compressed air network is available, digital integration with the DCS or PLC is a priority, adjustment frequency is moderate (temperature control loops with long time constants), or the installation is in a remote area without pneumatic infrastructure.\n\u003c\/p\u003e\n\u003cp\u003e\n  \u003cstrong\u003eChoose pneumatic linear actuator when:\u003c\/strong\u003e A compressed air network already exists, response speed is critical (pressure or flow control loops with short time constants), or spring fail-safe is required without relying on electrical components.\n\u003c\/p\u003e\n\n\u003ch3\u003eMain industries and applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003ePower generation — steam plants:\u003c\/strong\u003e Control of globe valves in process steam lines: regulation of heating steam temperature in heat exchangers, boiler feedwater flow control, and process turbine steam regulation. The electric linear actuator is the alternative when the plant does not have an instrumentation air system available at the control point.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eChemical and petrochemical industry:\u003c\/strong\u003e Control of globe valves in reactor temperature loops, regulation of reactant flow in distillation columns, and pressure control in condensation systems. The Ex-proof version for Zone 1 installations in petrochemical plants. See also \u003ca href=\"\/en\/collections\/actuadores-ex-proof\"\u003eCematic Ex-proof actuators\u003c\/a\u003e.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIndustrial and building HVAC:\u003c\/strong\u003e Globe control valves in industrial building, hospital, and data center heating steam systems. The integrated 4–20 mA modulating control allows direct integration with zone temperature controllers (BMS\/BACnet via protocol converter).\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eFood and pharmaceutical industry:\u003c\/strong\u003e Temperature control in pasteurizers, sterilizers, and process heat exchangers. The controlled speed of the linear actuator (0.46 mm\/sec) is appropriate for these temperature loops where time constants are long and high response speed is not required.\n  \u003c\/li\u003e\n\u003cli\u003e\n    \u003cstrong\u003eWater treatment — potable water plants:\u003c\/strong\u003e Control of globe valves in pressure filtration systems, flow regulation in pressure sand filters, and valve control in softening and reverse osmosis systems.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIndustrial cogeneration:\u003c\/strong\u003e Control of process steam in cogeneration plants where the control system is electric and no pneumatic infrastructure is available for steam valve actuators.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eGeneral manufacturing — steam heating systems:\u003c\/strong\u003e Temperature control in rubber curing presses, vulcanizers, autoclaves, and heat treatment equipment where the steam globe valve requires proportional control from a PID temperature controller.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose Cematic linear actuators?\u003c\/h3\u003e\n\u003cp\u003e\n  The Cematic range of linear actuators combines verified technical specifications — real force in kgf, constant speed of 0.46 mm\/sec, adjustable stroke, standard modulating control — with stock availability in Mexico City and technical support for correct sizing. We calculate the required force using your valve data, verify the necessary stroke, and confirm the correct voltage for your control system. For projects in classified areas, we offer the Ex-proof version with ATEX, IECEx, and CSA certification with complete technical documentation. Technical quotation on the same business day. Shipments throughout the Mexican Republic. Contact us via WhatsApp or at ventas@cematic.com.\n\u003c\/p\u003e","products":[{"product_id":"actuador-electrico-lineal-inteligente","title":"Smart Electric Linear Actuator | Precise Positioning for Control Valves","description":"\u003ch3\u003eSmart Linear Electric Actuator | Precise Positioning for Control Valves\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCEMATIC's \u003cstrong\u003esmart linear electric actuator\u003c\/strong\u003e is, without a doubt, the most complete solution for automating linear motion control valves. Unlike conventional On-Off actuators, this model allows the valve to be positioned at any intermediate point within its operating range. This is possible thanks to its 4 to 20 mA modulating control signal.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhy choose the smart linear electric actuator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFirst, its advanced control technology guarantees exact positioning with real-time digital feedback. In addition, it incorporates an LCD screen that allows the opening percentage to be viewed directly in the field, so no additional instruments are required.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFurthermore, its IP67 protection rating construction makes it suitable for wet environments and hose washdowns. This way, the actuator operates reliably even in the most demanding conditions.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThanks to its 4,000 N thrust force and a 60 mm stroke, this actuator is compatible with single-seat, double-seat, gate, and knife gate valves. Therefore, it is ideal for regulating small flows as well as controlling flows in larger diameter pipes. It should be noted that this equipment is delivered assembled and tested, ready for installation.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eForce: \u003c\/b\u003e4000 N\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStroke: \u003c\/b\u003e60 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDuration: \u003c\/b\u003e40~122 s\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAmbient temperature: \u003c\/b\u003e-25°C ~ +70°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity:\u003c\/strong\u003e 90% (25°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking environment:\u003c\/strong\u003e No strong corrosive, flammable or explosive media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConstruction: \u003c\/b\u003eClass F with thermal protector up to 135°C \/ IP67 rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSignal | Control:\u003c\/b\u003e 4~20 mA | Modulating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor:\u003c\/strong\u003e 10 W \/ 1.5A\u003cimg src=\"data:image\/png;base64,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\" alt=\"\"\u003e\u003cimg src=\"data:image\/png;base64,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\" alt=\"\"\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVoltage: \u003c\/b\u003e110 VAC ±10% 60Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicator:\u003c\/strong\u003e LCD screen with opening percentage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Compatible with standard linear control valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIt is a device that converts a control signal (usually electrical) into linear motion, allowing a control valve to be precisely positioned at any point within its operating range (not just open\/closed, but at intermediate positions). This allows continuous and precise regulation of fluid flow in a process. Below are some of its main applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"200\" data-end=\"340\"\u003e\n\u003cp data-start=\"202\" data-end=\"340\"\u003e\u003cstrong data-start=\"202\" data-end=\"242\"\u003eAutomation of linear valves: \u003c\/strong\u003eFor control, knife gate, gate, or globe valves with linear motion (water, steam, gas, etc.).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"342\" data-end=\"457\"\u003e\n\u003cp data-start=\"344\" data-end=\"457\"\u003e\u003cstrong data-start=\"344\" data-end=\"379\"\u003eWater treatment plants: \u003c\/strong\u003eFlow control in pumping, filtering systems, and process valves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"459\" data-end=\"568\"\u003e\n\u003cp data-start=\"461\" data-end=\"568\"\u003e\u003cstrong data-start=\"461\" data-end=\"487\"\u003ePower generation: \u003c\/strong\u003eAutomation of valves in power, thermal or renewable energy plants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"570\" data-end=\"690\"\u003e\n\u003cp data-start=\"572\" data-end=\"690\"\u003e\u003cstrong data-start=\"572\" data-end=\"611\"\u003ePetrochemical and Oil \u0026amp; Gas industry: \u003c\/strong\u003eRemote and safe control of valves in demanding or hazardous environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"810\" data-end=\"921\"\u003e\n\u003cp data-start=\"812\" data-end=\"921\"\u003e\u003cstrong data-start=\"812\" data-end=\"848\"\u003eGeneral industrial processes: \u003c\/strong\u003eHVAC, pharmaceutical, chemical, paper, steel, and food industries.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/ficha-tecnica-de-actuador-electrico-lineal-4000n.pdf?v=1761590944\" title=\"Ficha Técnica de Actuador Eléctrico Lineal Inteligente Cematic\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan style=\"color: #ae2929;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"Default Title","offer_id":51265895858489,"sku":null,"price":0.0,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/Actuador_electrico_lineal_inteligente_4000N.jpg?v=1774545060"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/collections\/actuador-electrico-lineal-cematic_d66aa0d9-daa5-469b-bd45-1d33bdadb5b0.jpg?v=1778105481","url":"https:\/\/cematic.com.mx\/en\/collections\/actuadores-lineales.oembed","provider":"Cematic","version":"1.0","type":"link"}