Derails, Adjustable Derails, & Rerailers

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DERAILSDerails are safety devices designed to limit the movement of a car or locomotive beyond a ˜xed point. They operate with the use of a fishoe" that sits on top of the rail and causes any wheels passing over it to derail. When travel into the restricted area is necessary, the shoe is removed. Derails are frequently used to protect areas where people are working, loading docks, or to prevent cars from rolling out of an industrial track onto the railway mainline.The two derails shown on this page are of welded steel construction and are the heaviest models available. Somewhat lighter models are also available, as well as portable derails, and derails equipped with blue warning ˚ags. Most derails can be padlocked in position to protect against vandalism.Model HB Sliding Derail is a heavy-duty derail designed for durability and to minimize stress on wheels and derail. It is operated from the side of the track with a stand that slides the shoe from the base to the upper (active) position. Pictured at left is model HB with a standard two-tie operating stand. Other types of stands are available. The stands require a connecting rod, and must be ordered separately. Weight (w/o stand) - 277 lbs.Model EB Hinged Derail is a very common and economical derail. It has a steel base which is spiked to the ties. The shoe is on a hinge connected to the base. This derail is designed for hand throw only. The shoe is ˚opped over on its back in the center of the track when in the inactive position. A target stand may be used to indicate the position of the shoe. Weight - 146 lbs.Derail Wheel CrowderIn special locations where it is absolutely necessary to derail to the inside rail of a curve or where higher speeds are anticipated, Harmer Steel recommends the use of the Derail Wheel Crowder, which assists derails by crowding the wheels into the throat or entering toe of the derail. This is signi˜cantly lower in cost than switch point and stock rail type derails.HB Derail CrowderLeft Hand HB DerailTrack 56-1/2 inches Gage 15 inches 30 inches
DERAILSDerails are designed to derail to the right or the left. A right-hand or left-hand derail must be speci˜ed when ordering. Looking in the direction of movement of a car to be derailed, a right-hand derail goes on the right-hand rail and derails towards the right. A left-hand derail goes on theleft-hand rail and derails toward the left. fiDouble End" derails are available and may be used as right or left hand.Model EB and HB derails come in ˜ve sizes (No. 4 through No. 8). The correct derail size is determined by the vertical distance in even inches from the top of the rail to the tie. (If tie plates are used, add the thickness of the plate under the rail to the height of the rail to determine the correct derail size. Crop the tie plate at the rail base so the derail is not partially mounted on the tie plate; the derail must sit level.) Adjustments to make the vertical distance correspond in even inches to the derail size should be made by adzing the tie under the derail or shimming up the derail with a steel shim. A derail may be used on rail 1/2 inches lower to 1/2 inches higher than the rail to which its size number refers, but the distance from the top of the rail to the surface on which the derail is secured must be even inches and must correspond to the size number of the derail.Left-hand derailRight-hand derailThe High Rise Derail Operating Stand is primarily a one piece weldment and is shipped assembled ready for installation. The only replaceable parts are the targets, connecting rod, lamp tip (if used) and the adjustable 1 inch diameter eyebolt.Each HRS-100 is shipped in three pieces; the primary welded unit, one connecting rod complete with adjustable clevis ends and pins, and a protective carton for the target. Weight - 180 lbs.The standard units are equipped with red and white targets that are positioned 41-5/8 inches above the top of the ties. The model shown at left has the Union Paci˜c style purple target with white fiD" which is positioned 58 inches above the ties. The standard unit comes with an 8 feet 2 inches adjustable connecting rod which places the center of the target staff 8 feet 10-1/4 inches from the center of the track. When ordering specify:1. Target colors if other than standard 2. Connecting rod length if other than standard 3. Lamp tip dimensions if other than AREMA standardModel HRS-100(with U.P. target)
ADJUSTABLE DERAIL, RERAILERS Model For Use Load Weight Number on Rails... Capacity Per Pair CW-3 30 to 60 lb. 15 ton 100 lbs. CW-3-1/2 40 to 80 lb. 20 ton 132 lbs. DW-5 70 to 100 lb. 100 ton 360 lbs. DW-5-1/2 85 to 141 lb. 200 ton 344 lbs.Model HDHF staff assembly consists of a connecting road and a mounting plate which is lagged to the ties in the center of the track. A 62 inches high staff fi˚ips up" automatically when the derail is thrown onto the rail. Target stands, derail staff assemblies and derail ˚ags are sold separately from derails to provide the most ˚exibility in choosing options.Rerailers are used to put the wheels of derailed cars or locomotives back on the track. Pulling the car causes the wheels to climb the incline and fall into place. It is not necessary to stop to reset the rerailers at each wheel because every car binds the rerailers tighter in place. Rerailers must be used in pairs (left and right).HD-3 and HD-4 HD-5 and HD-6 Model HD Low Pro˜le Derail meets the needs of those working in the more demanding railroad environment. All HD's in the series have been designed to meet the railroad industry's changing demands for increases in tonnage of locomotives and various types of rail cars, as well as increases in the trackage, speed and number of cars in rail yards. Decreased de˚ection angle of the derails allows a longer fitravel run" which increases the derail's functionality at higher speeds. At a 2-3/4 inches height above the top of the railhead, the HD derail ensures effective derailments of all types of rail cars, including mainline locomotives, whose locomotive pilots are cleared by the derail's low pro˜le height.Derails are NOT recommended for multiple derailments.A derailment may cause stress points which may result in a failure. Model Derail Type Fits Rail Weight HD-3 R Single End Right Hand 4-5/8 inches to 6-1/2 inches 150 lbs HD-3 L Single End Left Hand 4-5/8 inches to 6-1/2 inches 150 lbs HD-4 R Single End Right Hand 6-5/8 inches to 7-7/16 inches 150 lbs HD-4 L Single End Left Hand 6-5/8 inches to 7-7/16 inches 150 lbs HD-5 Double End Bidirectional 4-5/8 inches to 6-1/2 inches 182 lbs HD-6 Double End Bidirectional 6-5/8 inches to 7-7/16 inches 182 lbs