Please be aware: The GLA4000-S model is now supplied with an installation length of "200mm + Stroke Length", as opposed to the earlier "175mm + Stroke Length" which had previously been used for some of the smaller stroke length options.
The GLA4000-S is a powerful 12V DC (direct current) linear actuator designed for heavy loads and quality-critical applications. Each actuator is capable of providing up to 4000N (407kg, 897lbs) of pushing or pulling force at the rated voltage. The no-load travel speed at 12V is 11mm/s while at the full rated load the travel rate is 8mm/s.
This model is currently stocked in seven different stroke lengths (travel distances) of 50mm (2"), 100mm (4"), 150mm (6"), 200mm (8"), 300mm (12"), 400mm (15 3⁄4"), 500mm (19 11⁄16"). Other sizes can be made to-order, along with custom control and transmission options, please contact us for more information on these.
Read on below for more information.
Each of these actuators is built to last with corrosion resistant materials used throughout the exterior, along with seals and a central rubber-surround ensuring that the actuator is splash-proof and suitable for most covered outdoor use (be aware that direct long-term water exposure should be avoided, but only basic covering is required in most cases). Both the front and rear mounting points are constructed from sturdy metal, unlike the plastic brackets used by some rival products. We also stock steel mounting brackets suitable for this actuator.
The low noise output and smooth operation of this actuator make it perfect for powering adjustable beds, furniture, fold-out steps and similar automated features in and around the home. The larger sizes also lend themselves towards the likes of electric gates, ventilation windows and extendable structures.
The actuator comes with a 1.4m PVC insulated lead as standard (black external sleeve with two internal cores, one brown and one blue) with uncovered lead ends. An option is provided for a DC (barrel type) power connector to be added (2.1mm internal diameter, 5.5mm external) on a 200mm lead, bringing the total lead length to 1.6m. Allow for one extra working day to process your order if a connector option is added, since these are soldered and insulated to-order.
We are able to supply custom wiring and connectors upon request, please contact us with your requirements if interested.
To change the direction of travel simply swap the polarity of the DC power source to the two actuator leads (this may be achieved using hardware such as our rocker switch harness or GLA-CU-X2 remote control unit). By varying the input voltage between 0-12V DC it is possible to control the speed of the actuator. Reducing the voltage will also reduce load capacity (for example at 6V the actuator will have roughly half of the maximum load capacity at 12V).
This actuator is designed primarily for compression loads, it will typically work OK in tension, up to the same rated maximum load, but can be more susceptible to damage from overloading. Shock loads through the mounting points should be avoided (shock/impact loads may impart a force greater than the rated load through the actuator).
As with any DC motor the motor may be run at a higher voltage than the nominal 12V DC however operation at higher voltages will invalidate the warranty. Experienced users who wish to extract greater power from the actuator (at their own risk) should abide by a practical operation ceiling of 18V, above which the motor, diodes and limit switches of the actuator would be significantly more likely to fail. Be aware that the current draw will be greater if the actuator is run at above 12V DC and the duty cycle should be reduced to help avoid over-heating.
Ensure that the control hardware and power source are capable of providing sufficient current for the loads you expect the actuator to experience. We cannot be held liable for damage caused to connected hardware due to inappropriate hardware selection.
CAD models (STEP or IGS) of the actuator are available upon request. Continue to 'Technical Details' below for more product information.
|Motor:||Nominal 12V DC, up to 90W|
|No-load current:||3A (required to move, the actuator should not demand any current if it has reached an end limit point)|
|Maximum load:||4000N/407kg for supported (linear) loads. The maximum load should be reduced if the load is not straight, parallel to the movement of the actuator. Longer-travel actuators are affected to a greater extent by off-axis loads.|
|Current for max. load:||12.6A (do not apply power to the actuator if the load exceeds the maximum rating above, this would void the warranty and be likely to damage the gearbox, bearings or motor)|
|Maximum static load:||6000N (612kg) in compression. Maximum 4000N in tension.|
|Noise levels:||< 50dB under no-load|
< 55dB under full-load
|Maximum duty cycle:||30% (this is the maximum proportion of time that the actuator may be in operation for, up to 2minutes during any continuous stretch. The duty cycle should be reduced below 20% for average loads >2000N)|
|Life expectancy:||Nominal 30,000 strokes|
Please be aware that there may some variation in the operating performance from actuator to actuator, as a rule-of-thumb allow for a 5% difference above/below the given values. If intending to use two actuators together to drive the same assembly connect them in parallel to the input current and ensure that the driven assembly is rigid enough to transfer forces between the actuators (so as to prevent twisting if one actuator is otherwise slightly faster than the other). If your assembly is not rigid or needs to stay level with uneven loads (e.g. tabletop surfaces rising/falling level to the ground) then please get in contact to discuss automatic synchronising control options.
|Installation length:||This is the distance from the front to rear mounting hole centres when the actuator is retracted.|
Add the stroke length to the installation length to get the fully extended hole-to-hole centre distance (for example this would be 600mm for the current-version 200mm stroke).
|Mounting:||Two 10mm-bore holes. One at the end of the cylindrical piston rod, the other towards the rear of the gearbox housing. Both mounting points feature vertical slots to enable a variety of mounting methods.|
|Body material:||Aluminium piston-rod and main sleeve, plastic-enclosed steel motor housing, with toughened plastic gearbox surround. Zinc plated steel front and rear brackets.|
Enclosure rated to IP65, suitable for washing and short-term water exposure. If using outdoors shield actuator from direct rain.
|Operating temperature:||0°C ~ +40°C|
|Gearbox type:||Single-stage worm gear reduction|
|Limit switches:||Installed internally at ends of travel (fixed-position). The circuit functions like this:|
|Wire length:||1.4m (55")|
|Weight:||(with standard lead, no connector)|
If you have any queries about this item, including requests for bulk-pricing information, then please contact us.