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Frogs - voestalpine Flipbook PDF
Solid Self Guarded Maganese Frogs (SSGM) for use in standard yard applications, are a proven work horse of the rail indu
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Frogs
voestalpine Nortrak Inc. www.voestalpine.com/nortrak
FROGS voestalpine Nortrak manufactures frogs to AREMA AND individual railroad specifications. From standard yard applications to North America’s technologically advanced high speed mainline application, voestalpine Nortrak is the frog specialist.
Solid Self Guarded Maganese Frogs (SSGM) for use in standard yard applications, are a proven work horse of the rail industry. SSGM frogs can be manufactured to standard AREMA requirements or optimized with flange bearing properties and tapered rail connections to increase component life. This optimization, our Partial Flange Bearing Frog, is a hybrid of a conventional self-guarded frog and a pure flange bearing frog. Depending upon wear profile, wheels traverse the frog in either tread or flange bearing mode. The distribution of wheel loading yields significant improvement in frog life. Features • Designed for yard, terminal and transit applications
Benefits • Reduced point impact
• Robust solid manganese body
• Reduced noise and vibrations
• Universal toe/heel rail
• Reduced point wear
Other • Full Flange Bearings Frogs also available
Rail Bound Manganese (RBM) frogs are manufactured to meet or exceed all AREMA requirements. This is the most common frog used on both freight and passenger systems. • Explosive Depth Hardening (EDH) to exceed 352 BHN
• Hi-Solidity designs in all RBM designs and some solid designs
• Frog plates available with standard or elastic fasteners and multi-tie configurations
• Radio graphically tested when specified • Competitive prices
voestalpine Nortrak’s Jump Frog is ideal for applications with low tonnage and low speed on the diverging route. Design incorporates a continuous running rail on the through route and flange bearing ramps on the diverging route. • Eliminates impact loading on through route. • Reduces noise and vibrations • Reduces maintenance, robust design uses high solidity manganese/EDH; no moving parts; not effected by Thermal CWR stress.
• Designs can be adapted to any North American freight and transit requirements; available in 115, 132, 133, 136 & 141 lbs. sections and provides the best economy in No.’s 6 through 14.
FROGS Rail Bound Welded (RBW) frogs consist of a solid manganese body similar in footprint to the RBM with the difference being that the heel rails are flash butt welded to the casting. This core is ‘sandwiched’ between two bolted wing rails. The continuous transition across the welded heel of the frog greatly reduces impacts resulting in smoother rides, prolonged life and less maintenance. Features: • Tough manganese steel core
Technical Specs: • Meets or exceeds all AREMA specs
• Welded “No Impact” heel design
• Explosion hardened to exceed 352 BHN (if specified)
• Reinforced heel
• Welded Heel configuration voestalpine Nortrak’s Welded Boltless Manganese (WBM) frogs eliminate all rail joints on the frog providing a continuous running surface unaffected by CWR stresses. This design is used in Class 1, heavy haul service and all passenger rail environments from Streetcar to Commuter Rail due to the smooth transitions and reduced maintenance. This frog design with “flange bearing” properties has been used extensively in embedded applications for LRT and Streetcar. • Uses Nortrak Hi-Solidity explosive depth hardened (EDH) manganese steel
• Frog base cast to rail base profile to simplify plating
• Common footprint with RBM frogs
• Elimination of bolted joints and rails
• Reduced maintenance
• Uses bonded, bolted heel and toe blocks
voestalpine Nortrak has become a preeminent manufacturer of Spring Frogs since the resurgence of the design in the mid 90’s. Subsequently we enhanced the design by incorporating a manganese body (Rail Bound Manganese Spring Frog) and further improvement by welding the heel rails and rigid wing to the manganese body on our Welded Spring Manganese (WSM) design. These design improvements serve to prolong the frog life by replacing rail, block and bolt assemblies with wear resistant manganese and flash butt welds. Additional enhancements can be obtained with options like multi-tie base plates, friction reducing inserts, retarders and other spring wing control devices. • Uses High-Solidity explosive depth hardened • Large multi-tie base plates (EDH) manganese steel • Reduced maintenance • Continuous running surface • Low Impact Moveable Point Frogs (MPF) add a second throw device to a turnout and are economically viable in high density traffic. They provide impact elimination, noise reduction, very low maintenance and long life because of the continuous running surface. The two distinct designs Nortrak has produced in abundance in North America are the forged billet Vee Point and the Long Point/Short Point with slip movements. • Proven in the worlds’ heaviest traffic situations • Controls and resists the problem of thermal stress in CWR • The lowest maintenance cost of any frog • Impact reduction eliminates the need for weld build-up • Amtrak and UPRR designs
• Made in North America for heavy haul traffic • Standard designs in 132, 133 and 136 lb. sections
Nortrak is able to draw down on a world of experience and knowledge. Call us on one of the numbers listed on our web site: www.voestalpine.com/nortrak
Nortrak is a member of the VAE GmbH group of companies. With sales and production companies in over 20 countries across the world, the group has a depth of trackwork knowledge unrivalled by any other producer. www.voestalpine.com/vae
USA Birmingham, AL
VAE GmbH is, in turn, a wholly owned subsidiary of voestalpine AG. Dedicated to innovation and technological excellence, the voestalpine group consists of some 360 facilities in over 60 countries worldwide.
Cheyenne, WY Chicago Heights, IL Decatur, IL (Foundry) Newton, KS Pueblo, CO
www.voestalpine.com S ALE S O F F ICE S Seattle, WA Southlake, TX CANA D A Richmond, BC M E X ICO NORTRAK-DAMY
Frogs Brochure 2013
Printed in Canada
Guadalajara, JA www.damy.com