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The ZBG range of electro-hydraulic actuators utilize hydraulic fluid as an operating medium providing an efficient means of transferring power from an electric motor to linear motion.
We have 40 years of experiencing, supplying actuators worldwide to industries such as the industrial, mining, steel, nuclear and fossil fired power stations, waterworks, sewage works, off shore and the marine industry.
Benefits of the actuator include:
- Completely self contained : external pipework, power packs, compressors are not required therefore making installation time very cost effective.
- Thrusts from the 11 sizes available are from 1,100 lbf to 176,000 lbf.
- Max strokes upto 16ft can be supplied
- Totally enclosed and “O” – ring sealed construction ensures satisfactory operation in adverse environments.
- Filler breathers, filters and solenoid valves totally eliminated from the design.
- Fully adjustable thrust and speed in either direction.
- Standard electric motors fitted, any type of make can be supplied to suit, location, duty and customers requirements.
- Units supplied can be from NEMA 4 (weatherproof) to NEMA 7 (EXD) rated.
- All hydraulic ball and poppet valves have tight shut-off characteristics – leak proof.
- All “stay put” type actuators will hold position with power off up to breaking point.
- All actuators are designed with 10% thrust rating in hand.
- Fluids such as mineral oil, water in oil, water glycol and phosphate ester can be used.
- All actuators can operate upto 12 reversals (full extend and retract) per minute
- Positional accuracy : normally piston rod stops within +/- 0.118 inches. If high positional / repeatable accuracy is required solenoids or proportional valves can be fitted.
- Life expectancy in excess of 6,000,000 operations
Before leaving the factory, each unit is set to the required thrust and speed, fully tested, a test certificate completed and a declaration of incorporation issued.
Typical applications include bunker doors, airlock doors, tilting platforms, incineration plant doors, bifurcating chutes, hatches, retarders, penstock valves, butterfly valves, ball valves, railway points, dampers, brakes, furnace charging machines, walking beams and bulk handling equipment.
The high overall efficiency in hydraulic systems, coupled with the robust totally sealed construction, ensures actuators will operate for prolonged periods in adverse environments with virtually no maintenance required.
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