Production demands 0.0008" normal grinding tolerance; thanks to hardware and control software, a hydraulic component manufacturer delivers normal manufacturing tolerances that challenge those of specialty centerless grinding operations.(Grinding/Grinding Machines) From: Modern Applications News | Date: November 1, 2004 | COPYRIGHT 2004 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

With only 65 employees, Trotter Machine Inc. (Rockford, IL) is among the largest U.S. producers of hydraulic valve spools to off-highway equipment OEMs. The spools control the restriction and flow of high-pressure oil in hydraulic cylinder valves, used by John Deere, Caterpillar, and others on tractor and construction equipment lines, as Trotter sells to valve manufacturers. Skip Trotter, vice president--Operations, likens his products to the processors in a computer. "Our spools a...

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	Keep it clean: many valve problems can be avoided by maintaining a dirt-free hydraulic system. (From the Plant Floor) Plant Engineering ; Keep It Clean Valve maintenance can be divided into three general types, observes Ed Ropes, Product Manager, Parker Hydraulic Valve Division. Very complex valves usually need to be returned to the manufacturer when trouble arises. For simple valves, it is more cost-effective to replace them when
	New tricks for an old standard multiple seal placement from a single source. Assembly ; Using innovative design, Amara can now offer assembly of a common size of o-ring or seal to various groove locations with no change tooling and a single handling of the target part. Ideal for valve spools and similar products. [ILLUSTRATION OMITTED] The Amara Company (1992) Limited 905-372-4371
	New tricks for an old standard multiple seal placement from a single source.(Product Review)(Advertisement) Assembly ; Using innovative design, Amara can now offer assembly of a common size of o-ring or seal to various groove locations with no change tooling and a single handling of the target part. Ideal for valve spools and similar products. [ILLUSTRATION OMITTED] The Amara Company (1992) Limited 905-372-4371
	New tricks for an old standard multiple seal placement from a single source.(Product Review) Assembly ; Using innovative design, Amara can now offer assembly of a common size of o-ring or seal to various groove locations with no change tooling and a single handling of the target part. Ideal for valve spools and similar products. [ILLUSTRATION OMITTED] The Amara Company (1992) Limited 905-372-4371
	New tricks for an old standard.(Product Review) Assembly ; MULTIPLE SEAL PLACEMENT FROM A SINGLE SOURCE Using innovative design, Amara can now offer assembly of a common size of o-ring or seal to various groove locations with no change tooling and a single handling of the target part. Ideal for valve spools and similar products. [ILLUSTRATION OMITTED]

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