Regal Rexnord
Open Gearing
Regal Rexnord open gearing encompasses loose(non - enclosed) gears — spur gears, helical gears, worm gear sets, bevel gears, and gear racks — that machine builders and maintenance shops integrate into custom power - transmission mechanisms, manual drives, and open - frame machinery where a sealed gearbox is impractical or unnecessary.Under the Browning, Martin, and Rexnord brands, our open gear line includes stock sizes in a wide range of diametral pitches, pressure angles, and materials(steel, stainless steel, cast iron, and engineered polymers), as well as custom - manufactured gears for specific tooth counts, face widths, and hub configurations.Plant engineers in steel mills(mill - table bevel gears), food - processing plants(stainless - steel open gears), and general manufacturing select Regal Rexnord open gearing when they require standard or custom gears to repair existing open drives, retrofit obsolete equipment, or build new low - speed, low - cycle machine mechanisms.With through - hardened and case -hardened tooth surfaces, keyseated bores, and the ability to quickly manufacture one - off replacement gears for emergency repairs, our open gearing provides the rotating - element building blocks that keep legacy and special - purpose machinery productive.
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Trusted by Industry Leaders
Stock Spur Gears in All Standard Pitches & Sizes
Hundreds of stock gear sizes in steel and cast iron, keyseated and ready for shaft mounting — next - day shipment for emergency repairs and fast prototyping.
Custom Gear Manufacturing for Obsolete & Special Applications
Reverse - engineered replacement gears for equipment where OEM support has ended, manufactured from customer samples or drawings with material and heat - treatment specifications matched to the original design.
Stainless Steel & Polymer Gears for Clean Environments
304 / 316 stainless - steel and acetal / phenolic plastic gears that withstand washdown and chemical exposure without corrosion, eliminating the lubricant contamination risks of open carbon - steel gearing.
Gear Racks for Linear - to - Rotary Conversion
Stock and custom - cut gear racks in steel and stainless steel for the rack - and - pinion drives that convert rotary to linear motion on manual slides, gates, and positioning systems.
Bevel & Miter Gear Sets for Right - Angle Open Drives
Stock bevel gear pairs in 1: 1 and ratio configurations for the open right - angle drives common in manual valve actuation, machine - tool feeds, and agricultural adjuster mechanisms.
Case - Hardened & Ground Tooth Options
Gears with precision - ground tooth profiles and hardened surfaces for the higher - speed, higher - load open drives where AGMA quality and surface durability dictate gear life.
Open Gearing for Steel Mill Runout Tables & Mill Auxiliary Drives
Steel - mill runout tables, cooling beds, and shear feed rollers are driven by extensive systems of bevel gears, spur gears, and line shafts operating in an environment of water spray, mill scale, and extreme heat — conditions that would destroy enclosed gearbox seals and lubricants.Regal Rexnord open gearing for these applications is manufactured from the alloy steels and with the tooth - surface hardnesses that survive in this environment, with open - gear lubricant compounds designed to adhere under high load and water wash.For mills replacing worn or broken open gears on legacy equipment, our reverse - engineering capability provides replacement gears manufactured to the exact tooth geometry and material of the original, often on an emergency basis that minimizes the production downtime that costs a steel mill hundreds of thousands of dollars per hour.
Open Gear Lubrication & Maintenance Best Practices
Unlike enclosed gearboxes with oil baths, open gears rely on periodic application of high - viscosity, high - adhesion lubricants(open - gear compounds) that resist fling - off and provide the extreme - pressure film required for the slow - speed, high - load sliding contact of gear teeth.The lubrication interval and compound type are critical; under - lubricated open gears wear rapidly, while the wrong lubricant can attract dust and form an abrasive paste.Regal Rexnord provides open - gear lubrication recommendations, automated spray - lubrication system designs for large, continuous - duty open drives, and on - site inspection services that assess tooth wear patterns and recommend the corrective actions that extend open - gear life.