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The collector is basically a self-lubricating copper graphite shoe clamped in an insulating housing (the collector head), and held firmly against the conductor by a pantograph spring linkage. Crimp type lugs are furnished for electrical connection to the shoe. Pigtails will be supplied on request at extra cost.
The collector head pivots at shoe contact height so that the shoe glides along the conductor and maintains full face contact. Different ampere ratings are achieved with different matched shoes and springs. These, along with two basic linkages, make up various collectors.
The linkages are fabricated of aluminum alloy or injection moulded high impact plastics, double insulated design, and include a spring arm with the collector head and yoke swiveled at one end. The spring arm swivels in a base to provide for horizontal misalignment. The base clamps to a 1" square bar (not furnished). The spring allows for vertical misalignment, applies constant pressure to the collector shoe throughout the stroke.
35 amp collectors negotiate curves down to 18" radius. Seventy and 100 amp collectors down to 36" radius; 150 amp collectors are designed for use on straight runs only. No pick up guides.
For special applications, long arm collectors are available with bronze casting v/s aluminum, stainless steel hardware v/s plated steel and epoxy coated aluminum parts v/s aluminum parts.
Standard Arm Collector - Recommended for general use on cranes and stable monorails. 2" vertical stroke.
Long Arm Collector - Used where there is excessive motion vertically or horizontally (as with a swaying hoist) and for high-speed applications. It will accommodate a total vertical stroke of 3". Note the different mounting dimensions. Self-centering long are collectors are available in single and tandem configuration.
Self-Centering Collector - This is the standard arm collector with attachments to hold it in centered position for re-entering the pick-up guide on discontinuous circuits.
Alternate Collector Heads
Contact Shoe Selection
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