Patented worm gear reducer guaranteed leak-free for 18 months

Morse Raider Plus' roll-burnished seal journal and double-lip seals keep contaminants out and lubricant in. Quill liner eases disassembly.

FLORENCE, KY., JULY 2013 - Emerson Industrial Automation's Morse Raider Plus speed reducers utilize advanced machining techniques, an additional input bearing and computer-aided assembly to arm them for leak-free performance, guaranteed for 18 months from date of manufacture.  Ideal for numerous applications in various industries, the Raider Plus' computerized gear centering optimizes the gear mesh for reduced heat and debris formation, establishing the proper backlash and delivering high efficiency and long life. A patented roll-burnished seal journal finish extends seal life up to four-fold, and double-lip seals on both input and output shafts provide leak-proof operation in highly contaminated applications. The Raider Plus also features an exclusive non-metallic quill liner that reduces fretting and corrosion, and eases motor removal. Large, single-row ball bearings absorb radial and thrust loads on higher input speeds, while heavy-duty tapered roller bearings on all output shafts handle inherent gear load and provide maximum overhung load capacity.

“A key design component of this reducer is a second input bearing that reduces wear and fatigue on the input seal,” said DeWayne Polley, Gearing Product Specialist for Emerson. “The second input bearing minimizes shaft movement during motor installation and operation. We tracked the performance of the Raider Plus and are confident the materials and assembly of this product support an 18-month leak-free guarantee.”

Four unit models - the “U”: a universal style with an input shaft, the “Q”: a c-face-style that accepts a motor shaft, and both styles with hollow or solid outputs - are available with a center distance range of 1.0” to 6.0”, ratios from 5:1 to 3600:1 and output torques up to 25,013 in-lbs.

All Raider Plus housings, motor adaptors, covers and mounting bases have cast iron single-piece construction for maximum strength and dependability. Forged bronze worm gears, precision manufactured to AGMA specifications, provide greater tensile strength than cast bronze. The one-piece worm shaft is hardened for extra strength and durability. The speed reducers are all factory-filled with FDA-approved polyglycol synthetic lubricant for enhanced rating and reduced thermal capacity.

A video demonstrating how the worm gear reducer all but eliminates irregular shaft movement that damages seals and may cause leaks is available on the Emerson YouTube channel.

For more details on the Morse Raider Plus worm gear reducer, see for an overview of the company's worm gearing product line.

About Emerson
Emerson (NYSE: EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets around the world.  The company is comprised of five business segments: Process Management, Industrial Automation, Network Power, Climate Technologies, and Commercial & Residential Solutions.  Sales in fiscal 2012 were $24.4 billion.  For more information, visit

About Emerson Industrial Automation
Emerson Industrial Automation, a business of Emerson, is a global technology provider that enables productivity, efficiency and quality gains for customers across a spectrum of industries. Our products include alternators, electric motors and drives, electrical distribution devices and mechanical power transmission, fluid automation and ultrasonic joining solutions. Emerson brands include Appleton, ASCO, Branson Ultrasonics, Browning, Control Techniques, Kop-Flex, Leroy-Somer, McGill, Morse, Numatics, O-Z/Gedney, Rollway, SealMaster, SSB Wind Systems and System Plast. For more information, visit


For more information, contact:

Jackie Catalano
Corporate Manager, Global Marketing Communications
Emerson Industrial Automation
Power Transmission Solutions
Tel: 859 727 5271

Release No. MCWR13032E