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Equipment and spare partsBrowse manufacturers Search by manufacturerFounded in 1877 in the USA and part of Regal Rexnord Corporation, Boston Gear is an industry leader in 700 Series worm speed reducers, SS700 stainless steel washdown drives, precision open gearing, Centric mechanical overload clutches, and Bost-Bronz self-lubricating bearings. We provide comprehensive global supply of genuine Boston Gear motion control components for automated packaging, food processing, and material handling systems.
The 700 Series represents an established industrial benchmark for heavy-duty worm gear drives. Rigid one-piece cast iron housings, carburized and precision-ground alloy steel worms, and centrifugally cast phosphor bronze worm gears provide high mechanical efficiency, quiet operation, and extended service life. Configurations span single reduction (5:1 to 60:1 ratios) and double reduction (up to 3600:1), with solid or hollow output shafts. Standardized NEMA C-Face and IEC motor flanges facilitate direct coupling to industrial electric motors. The 700XL edition features enhanced tapered roller bearing load ratings and refined tooth geometry to withstand severe overhung and thrust loads in conveyor drives and industrial mixers.
Engineered specifically for food processing, beverage, pharmaceutical, and chemical packaging applications requiring high-pressure washdown compliance (IP69K). Housings, motor flanges, and output shafts are cast from AISI 316 stainless steel with smooth, non-porous surfaces eliminating bacterial harborage zones. Filled for life with NSF H1 registered synthetic food-grade lubricant and equipped with premium Viton double-lip shaft seals shielded by protective flingers against harsh caustic and acidic wash solutions. For moderate washdown environments, the Bost-Kleen epoxy/antimicrobial coating platform is also available.
The 200 Series comprises inline helical gear drives with hardened helical gearing, delivering elevated mechanical efficiency (up to 98% per reduction stage) and high torque density for continuous duty. The 800 Series combines a high-efficiency helical primary reduction with a heavy-duty worm secondary stage, delivering high output torque and right-angle mounting convenience. Fine-grained cast iron housings preserve rigid bearing alignment under cyclic shock forces. Gear sets are carburized and ground to precision AGMA quality standards, reducing frictional losses, minimizing operating temperatures, and extending maintenance intervals.
Boston Gear open gearing catalog encompasses over 12,000 standard catalog items: spur gears (14.5° and 20° pressure angles), helical gears, straight and spiral bevel/miter gears, worms and worm gears, and precision rack bars. Manufactured from carbon steel, stainless steel, phosphor bronze, cast iron, and non-metallic Delrin acetal. All gear components strictly adhere to AGMA and ISO standards. Available in plain bore for custom machining, finished bore with standardized keyway and setscrew, or clamp-type configurations for fast mounting.
Centric mechanical overload clutches (Series ORC, H-1600, Vari-Tork, and Trig-O-Matic) provide instantaneous mechanical disengagement upon reaching a preset torque threshold, safeguarding motors, gear reducers, and processing machinery from costly jams. Featuring ball-detent, roller-detent, or friction-disc release mechanisms with automatic or manual reset. Trip torque repeatability remains within ±5%, ensuring dependable protection independent of operating ambient temperatures or run time. Clutches can be outfitted with axial trip indicator plates and limit switches to trigger immediate motor electrical shutdown.
Boston Gear mounted bearing line includes cast iron, ductile iron, and stainless steel pillow blocks, 2-bolt, and 4-bolt flanged units. Self-aligning ball bearing inserts feature heavy-duty contact seals backed by metal flinger rings and secure shaft locking via eccentric locking collars or set screws. For articulating linkages and steering linkages, Boston Gear supplies precision spherical rod ends (Series B, CM, and CB) with male/female right- or left-hand threads, sintered bronze or PTFE liners, built to withstand high radial and reciprocating dynamic loads.
Bost-Bronz sleeve bearings are manufactured via powder metallurgy from porous sintered bronze (SAE 841 specification), vacuum-impregnated with high-grade lubricating oil (up to 20% volume). When rotation begins, oil meters through capillary pores to create a continuous hydrodynamic film, returning to the matrix upon stopping for self-lubricating operation. The Bost-Bronz line includes plain cylindrical bushings, flanged sleeves, thrust washers, and solid cored bar stock. For extreme shock loads and high surface pressure, Boston Gear supplies cast phosphor bronze Bear-N-Bronz bearings (SAE 660 / C93200 specification).
Boston Gear flexible couplings (Series FC, BF, and Jaw) accommodate angular, parallel, and axial shaft misalignments between electric motors and driven machinery, absorbing torsional vibration and cyclic shocks. Requiring zero lubrication, they feature oil-resistant polyurethane or nitrile elastomeric inserts. Precision Pin & Block universal joints (Series PIN, UJ) and bronze-bushed heavy-duty cross joints transmit continuous torque across operating angles up to 30°–45° in packaging machinery, multi-spindle drilling heads, and remote industrial drives.
Our motion engineers perform comprehensive drivetrain calculations covering gear reduction ratios, output torque requirements, AGMA service factors, permissible overhung shaft loads, and thermal dissipation ratings. We configure tailored speed reducer assemblies across Series 700, 700XL, SS700, and 200/800 for automated manufacturing lines.
We support international conveyor builders, packaging machinery OEMs, and food processing plants with genuine Boston Gear drives and mechanical components, ensuring continuous 24/7 reliability across harsh industrial environments.
Boston Gear components are manufactured in strict compliance with AGMA and ISO 9001 quality systems. SS700 stainless steel reducers feature certified IP69K enclosure protection and NSF H1 food-grade lubrication for seamless integration into cleanroom processing.
All genuine Boston Gear products are supplied directly in factory packaging accompanied by technical specifications, engineering dimensional drawings, and quality inspection certificates, backed by dependable international logistics.
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