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 Applications

Hot 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

Traverse  

M - Series actuator on stack caps

Steel Applications

Coke 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 Scrubbers

E - Series actuator on blast furnace equalizerand relief valves

Steel

Cold 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 Hydro-Bin Slide Gates Diverter Gates Undercut Gates Bottom Ash Gates Plows

Series E - Operating Stacker Tube Flop Gates

Series JM with Manual Pump on Scrubber Exit Damper

Power Generation Applications

Series JB Proportional Drive on Boiler Fuel Control Series KRQ Rotary Proportional

Drive onScrubber 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 Applications

Series Q-36 High Speed Unit on Coal Sampler

Series Q-36 on Flop Gate

Nuclear Applications

Steam Control Valves Dampers

Series JE-4-FS Linear Actuator modulating and fail-safe

to replace ITT Barton Unit.

Series KR90-FS Rotary Actuator, modulating and fail-

safefor use on an air damper.

Nuclear Applications

Series JE6-FS linear actuator, modulating, spring fail-safe, withbuilt-in manual pump over-ride on a steam control valve.

Series JE-6 linear actuator modulating, fail-in-place, withbuilt-in manual pump over-ride on a steam control valve

Utilities Applications

Lock Valving Operators Sewage Plant Valving /Slide

Gates Water Plant Valving /Slide Gates Damper Operators Taintor Gates Penstock Valves Cone Jet Valve Operators Lock Mitre Gates Flood Control Slide Gates Coal Handling Gates Trash Rakes Turbine By-Pass Valves Wicket Gates Steam Valve OperatorsKerry Actuator Operating Dam Gate

Utilities Applications

Kerry Actuator Operating Lock Gate

Kerry Actuator Operating Sewage PlantSluice Gate

Contact Us

Kerry Company Inc 3003 Wildwood-Sample Road PO Box 51 Allison Park, PA 15101    412-486-3388 412-486-7449 Represented in Ontario by RGW Sales Canada Phone 905-296-2039 Cell 289-339-3644 www.rgwsalescanada.com