FMP-COMERSAMX CATALOGO FMP | Page 368

Hardware & Maintenance Choosing a Caster When replacing casters, try to match the new set as closely as possible to the originals. Upgrading a set of casters to a heavier duty type is recommended if casters are prone to excessive wear. When adding a set of casters, consider the weight and size of the equipment as well as the floor conditions. A heavy piece of equipment should have large wheels to hold the weight and provide easy rolling. Floors that are rough can cause rubber caster wheels to wear quickly. Floors that are exposed to grease, oil, or heavy detergents can also cause deterioration. In both cases, a caster with a polyurethane wheel will last longer than a caster that has a rubber wheel. More information on selecting casters is provided below. Caster Types s t c u d o r P e n i h c a M n i l k n a r F 1 1 0 2 © Swivel Stem Casters: The stem of these casters fits inside of a leg. The stem is tightened to expand the rubber sleeve and “lock” the caster into the leg. Plate Mount Casters: These casters usually are used on equipment. The mounting holes in the plate are commonly elongated for easier mounting and alignment. • Casters for 1" tubing are generally used on freestanding shelving and carts • Casters for 1 5 ⁄ 8 " tubing are generally used on work tables and equipment stands Threaded Stem Casters: These casters are installed on equipment with a threaded hole, or where a caster can be secured with a nut. They are also ideal for replacing stud mount (threaded) legs on a piece of equipment. s t c u d o r P e n i h c a M n i l k n a r F 1 1 0 2 © wheel types Black and Gray Rubber Wheels Polyurethane Wheels Polyolefin Wheels These wheels are lightweight and high capacity. They are resistant to water, oils, grease, gasoline, and most commonly used chemicals. They are also non-marking and non-conducive. Can handle extreme shock loads. ©2011 Franklin Machine Products These wheels are made with a TPR tread material which is bonded to a polyolefin black core. This construction offers superior performance, silent operation, and resistance to all common chemicals. The medium-duty wheels are supplied with Delrin ® acetyl resin bearings, and the standard-duty wheels have plain bearings. ©2011 Franklin Machine Products These wheels are made with gray, non-marking polyurethane tread material which is mechanically locked to a gray polyolefin core. This construction makes these wheels virtually indestructible and shock resistant to sudden impacts. In addition to rolling ease and quiet operation, these wheels are resistant to water, acids, oil, and common chemicals. The medium-duty wheels are supplied with precision ball bearings, and the standard-duty wheels have Delrin ® acetyl resin bearings. ©2011 Franklin Machine Products Understanding Specifications Institutional Grade: This is the highest grade of caster available for the foodservice industry. Equipment Load Height Load Height: This is the distance a caster raises a piece of equipment off the floor or the overall height of the caster when mounted. It is important when replacing casters because the new casters may cause the equipment to sit higher or lower if the load height is different from the original set. How to Measure Tubing and Pipe Tubing • Tubing has a thinner wall thickness than pipe • Tubing is measured from the outside diameter • Pipe is measured from the inside diameter Pipe • To determine pipe size, measure the male (threaded) end of the pipe: I  f OD is 1 1 ⁄ 4 " and under, subtract 1 ⁄ 4 ". I  f OD is 1 5 ⁄ 8 " and over, subtract 3 ⁄ 8 ". Load Capacity: This is the total weight a set of 4 casters can carry while the equipment is in motion. s t c u d o r P e n i h c a M n i l k n a r F 1 1 0 2 © 310 fmponline.com