Since 1857, TB Wood's, a brand of Altra Industrial Motion, has been offering quality industrial couplings and belt drive solutions for applications in pumps, elevators, escalators and packaging machinery. Headquartered in Chambersburg, Pennsylvania, USA, the company's product line includes couplings, coupling inserts, belt drives, commercial castings and hydrostatic speed variators. Read More


Power Transmission




HVAC and Refrigeration


Material Handling




Fleet and Vehicle Maintenance

Power Transmission Filter

Couplings Collars and AdaptersView all

  • Coupling Inserts

    Intended for use with conveyors, mixers, compressors, pumps, blowers and motors. Can operate at temperatures ranging from -65 to 275 degrees F and are available in different body styles, insert materials and lengths

  • Flange Coupling Accessories
  • Flex Coupling Hubs

    Widely used in the maintenance and repair of pumps, bearings and seals. Available in different materials, body styles, bore diameters, hub diameters and heights

  • Grid Coupling
  • Jaw Coupling Hubs

    Shaft coupling hubs to connect shafts for torque transmission and accommodating misalignments up to 0.38 inches in motion control & automation applications. Feature aluminium / cast iron / stainless steel / sintered carbon steel construction for excellent wear resistance and vibration damping

  • Jaw Coupling Spiders

    Designed to minimise shock between coupling hubs and for accommodating axial, angular and parallel misalignments. Offered in urethane, Buna-N and Hytrel variants in different heights and lengths

  • Motion Control Couplings
  • Shaft Collars
  • Spline Shafts and Couplings
  • Universal Joints

Power Transmission BeltsView all

  • Belt Accessories

    Includes a plastic gauge featuring embedded grooves to check V-belt profiles and sheaves for dimensional errors and wear

  • Synchronous Drive Gearbelts
  • V-Belts

    Provide power transmission from engines to fans, water pumps, power steering systems, alternators and air conditioning compressors. Feature diene / ethylene / neoprene / plastic construction for preventing damage caused by flexing, twisting or abrasives. Ensure secure fit in pulleys

Speed ReducersView all

  • Flange Coupling Kit

    Suitable for joining 2 pieces of couplings having parallel & angular misalignments or end movement. G-Flex grid coupling cover kits provide speeds up to 6000 rpm. QD bushing hardware available in EL, EM, FLM, JAM, SF, SFL, JA, QTM, SD, SKL, SDSM, SK, SFM, SKLM & SH sizes

  • Speed Reducers and Gear Drives

BushingsView all

  • Reducing Bushings
  • Tapered and QD Bushings

    Ideal for applications with gears, sheaves, sprockets, timing pulleys and components having matching QD bores. Offered in different bore diameters, materials, bore bushing series and lengths

Sheaves and PulleysView all

  • V-Belt Pulleys

    Used for transmitting power between two parallel axes and are compatible with V-belt Sections 4L, 5L, A, AX, B, and BX

Sprockets and Inspection Service DoorsView all

  • Sprockets

    Used in motorcycles, bicycles and tracked vehicles for transmitting rotary motion between two shafts (where gears are not suitable). Also ideal for imparting linear motion to a track or tape. Made of cast iron / ductile iron / steel for structural rigidity and corrosion resistance

About Tb Woods

TB Wood's coupling catalogue comprises Sure-Flex Plus, Form-Flex, Torsiflex-I Disc, Dura-Flex, L-Jaw, G-Flex grid and rigid couplings. The ATEX-compliant TB Wood's Sure-Flex couplings feature four-way flexing action to minimise shocks and accommodate misalignment. These units have a high torque rating and a flexible design that eliminates the need for lubrication. We also offer TB Woods V belts in different bore diameters for different shaft sizes, designed to transmit power between two parallel axes.

Things To Consider

Cross-Reference Alternatives

TB Wood's product's model numbers generally cross individual reference to the equivalent Lovejoy MPNs (manufacturer's part numbers). So, if you're looking for couplings, flanges, gear & accessories that are either out of stock or obsolete, chances are Raptor Supplies has the alternate product available.


These TB Wood's coupling products are generally small in size and require compact packaging. Some models come in a pack of various pieces. They are suitable for courier shipment and not air freight.

Major Trade Names

Form-Flex Couplings

Form-Flex couplings transfer torque between two connected shafts while accommodating angular, parallel & axial misalignment. These couplings have all-metal construction with no moving parts for high t...Read more 

Dura-Flex Couplings

Dura-Flex couplings use finite element analysis to maximise flex life and a lightweight element to absorb loading shock & torsional vibrations. These easily replaceable couplings have a versatile spac...Read more 

G-Flex Couplings

These taper grid couplings are made from hardened & tempered high tensile alloy steel that is shot-peened. This causes the grid spring to form a stressed surface layer under compression and prevents c...Read more 

Frequently Asked Questions

What standards / certifications do TB Wood's couplings abide by?

TB Wood's company is ISO 9001 certified, maintaining superior quality while manufacturing couplings. The brand's Sure-Flex Plus couplings and Dura-Flex couplings are ATEX certified for user safety in explosive environments.

What are the uses of TB Wood's couplings?

TB Wood's couplings transmit torque and rotational force from one shaft to another while handling shaft misalignment. These couplings can also dampen shocks & vibrations to prevent component damage.

Where are gear couplings used?

Gear couplings are generally used in large machines like pumps, blowers, compressors & mixers. They are suitable to reduce backlash in smaller equipment.