The Kerry Company Manufacturing Unique Linear and Rotary Actuators to keep you moving
Our Story The KERRY ACTUATOR is a unique concept designed to join together the advantages of conventional electrical rams (compactness and easy installation) and the advantages of hydraulics (smooth linear motion, adjustability, safety, and reliability). It incorporates, in one compact component, an electric motor (any type), a hydraulic pump enclosed in a sealed reservoir, flow, pressure and functional control valves, and a double acting heavy duty hydraulic cylinder or rotary actuator.
TECHNOLOGICAL FEATURES 1. Single unit self-powered construction: The whole hydraulic circuit (electric motor, pump, flow and pressure controls and cylinder) is contained in a single assembly which eliminates expensive engineering, installation, start-up and maintenance costs. Operating costs are also reduced since the unit motor operates only when rod motion is required. 2. Modular stacked construction: The design of most Kerry Actuators is such that all modular control components are assembled directly to the pump. 3. Sealed hydraulic circuit: The entire unit is sealed from the atmosphere. The design of our reservoir allows for changing hydraulic fluid volume on extension and retraction of the cylinder rod and for temperature changes. This important feature eliminates the entry of dirt and moisture into the system and renders a long maintenance free unit service life.
TECHNOLOGICAL FEATURES 4. Internal feeds to the cylinder: In the B, E, K, and M series units, the fluid feed to both the rod and piston sides of the cylinder are effected internally, eliminating potential leakage points. In the JB, JE, JK, JM, Q, S (special) and KR series units there are one or two external fluid feed lines to the rod and piston sides of the cylinder, depending upon whether the unit is built with an in-line or laterally mounted power unit. 5. Electrical Control: An important feature of the Kerry Actuator design is the reverse rotation of the pumping unit. The obvious advantages are: 5.1 - There is no need for a directional control valve with its associated actuating solenoids. A simple electrical reversing motor starter allows for "3 wire" control of the actuator, eliminating expensive electrical engineering, relays, switches and numerous cables. 5.2 - The electric motor is normally stopped after each stroke. When the motor is signaled to stop, the cylinder rod is immediately and automatically locked in position by hydraulic locking valves. This can take place at any position in the unit stroke in both directions. 5.3 - With the Kerry Actuator system there is an obvious electrical power savings and a decrease in component wear as compared with a standard typical hydraulic system where the electric motor is continuously running, generating heat and wear in the system.
TECHNOLOGICAL FEATURES 6. Eliminate the need for hydraulic expertise by the user: This new concept of self-contained electro-hydraulic actuator allows the potential user to select from a standard range of Kerry Actuators without the necessity of complex calculations for power, oil flow, pressure, etc. The only requirements for selecting the correct Kerry Actuator would be to know the force, speed, stroke or rotation mounting and motor construction required. 7. Optional Accessories: • Mounting Fixtures: Trunion, Flange, Foot, Base, or Eye to Eye • Adjustable Limit Switches • Position Indication: Potentiometer or Transducer • Rod Ends: Threaded, Male or Female Clevis, Plain or Spherical Eye • Alarm Warning System: High Temperature, High Pressure, Low Pressure, etc. • Explosion Proof, Dirty Duty or Submersible Electrical Construction • Fail Safe Construction • Stainless Steel Rod • Manual Override Options • Steel Rod Cover
Markets Served Steel Power Generation Mining Nuclear Power Utilities & Related Industries
Steel ApplicationsHot Mill Areas Heat Retention Hoods Width Gauge & X-Ray Transverse Slab and Cobble Push-Offs Reheat Furnace Doors & Dampers Primary Water Valves Cooling Valves Entry Guides Side Guides Q - Series actuators on heat retention hoods
Steel Applications Boiler House - Utilities - Misc. Bottom Ash Gates Stack Cap Valve Operators Damper Operators Scrubber Valve Operations Lance Manipulators Roll Lathe Tail Stock TraverseM - Series actuator on stack caps
Steel ApplicationsCoke Plant Smoke Seals Charge Car Gates Wharf Gates Barge Unloaders Larry Car Coal Handling Gates Coke Bin Gates Door Machines Series M-48 on coke pusher machine smoke seal
Steel Applications Blast Furnace Area •Hot Blast Valves •Skip Hoist Gates •Iron & Additive Bin Gates •Equalizer & Relief Valves •Mixer Valves •Blow-Off Valves •Gas Safety Shut - Off Valves •Back Draft Valves •Chimney Valves •Movable Throat Armor •Venturi ScrubbersE - Series actuator on blast furnace equalizer and relief valves
SteelCold Mills - Galvanizing and Pickling Lines Steering Rolls Billy Rolls Tensioning Rolls Bride Roll Units Conveyor Traverse X-Ray & Width Gauge Traverse Low Boy Roll Units Shear Positioning Side Trimmer Positioning Pelletizing Skids Transfer Cars Electrostatic Spray Header Series JE-12 on galvanizing line steering roll
Power Generation Applications Scrubber Controls Conveyor Tensioners Fan Damper Controls Ash Slurry Valves Coal Samplers Steam Control Valves Trash Rakes Flop Gates Series E - Operating Stacker Tube Hydro-Bin Slide Gates Flop Gates Diverter Gates Undercut Gates Bottom Ash Gates Plows Series JM with Manual Pump on Scrubber Exit Damper
Power Generation ApplicationsSeries JB Proportional Drive onBoiler Fuel Control Series KRQ Rotary Proportional Drive on Scrubber Damper
Mining Applications Conveyor Tensioners Fan Damper Controls Coal Samplers Hoist Brakes-Fail Safe Flop Gates Dryer Gates Refuse Bin Gates Diverter Gates Load-out Gates Mass Flow Gates Undercut Gates Plows Valves Series JE-36 on Slide Gate
Mining ApplicationsSeries Q-36 High Speed Unit Series Q-36 on Flop Gate on Coal Sampler
Nuclear Applications Steam Control Valves Dampers Series JE-4-FS Linear Actuator Series KR90-FS Rotary modulating and fail-safe Actuator, modulating and fail- to replace ITT Barton Unit. safe for use on an air damper.
Nuclear ApplicationsSeries JE-6 linear actuator Series JE6-FS linear actuator,modulating, fail-in-place, with modulating, spring fail-safe, withbuilt-in manual pump over-ride on a built-in manual pump over-ride on asteam control valve steam control valve.