Roller Trucks

Morgan Expansion Roller Trucks and replacement rubber tires.

We are currently out of all sizes of Morgan Expansion Roller Trucks and Replacement Rubbers.. We manufacture these and have raw castings on hand that are waiting to be machined. We hope to have some of these available soon. The Delrin trucks listed are an excellent substitute for the Morgan truck especially for printing from photopolymer plates where uniform truck diameter is very important for proper inking. Along with the Delrin trucks, we recommend using the UMHW tape in the .005" and .010" thickness to build up the worn bed rails of C&Ps and other presses to achieve correct roller height.

Trucks are priced by the each unless otherwise noted. Thus, a C&P 10x15 roller, as an example, requires that you order two (2) trucks per roller.

"Roller Trucks, Morgan Expansion, for C&P 8x12, set of 6 plus wrench"
$77.50
ME341
Back in stock, set of 6 includes one wrench for the adjusting nut. We recommend that the rubber tire be warmed in a cup of hot water for a minute or two prior to putting it on the truck body and tightening the nut. This will allow for easier and more uniform expansion of the rubber. If you print from photopolymer plates, we recommend using our solid Delrin truck--experienced press operators report better success in uniform inking when using the Delrin truck.

The Morgan Expansion truck was first introduced in 1915 by the Cowan Company. These trucks were designed to handle the problem of expansion/contraction of rollers made from composition, a product made from animal glue, glycerin, and molassas. This mixture, besides being edible, also will absorb moisture during high humidity days and shrink during low humidity periods, like winter. Because composition rollers were so unpredictable, the Morgan expansion truck could be adjusted to compensate. With modern rollers made from synthetic rubber, and accurate height plate materials like photopolymer, adjustable trucks are not really necessary--all the trucks should be the same diameter and any variation in roller height should be made by adding our hard plastic tape to the bed rails, especially for C&P presses.

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