Up to 96 kNm;
850,000 in.lb.

These pin and bush couplings accept parallel, angular and axial misalignment and can provide considerable torsional flexibility.

•	Vertical or horizontal operation
•	80 or 90 shore hardness close fitting flexible elements
•	Steel or cast iron hubs
•	Brake drum or disc available as well as special designs

Up to 0.70 kNm;
6,228 in.lb.

The Jaw-type elastomeric coupling is an economical, proven solution for general purpose applications. Jaw couplings are easy to install and require no lubrication or maintenance. Four different flexible insert types are available: Buna-N rubber, Urethane, Hytrel™ and Bronze. Jaw couplings are an excellent choice for all light and medium duty general purpose industrial applications.

•	No maintenance/lubrication
•	Part-for-part interchangeable with industry standard design
•	Fail-safe design – equipment will continue to drive if elastomer fails
•	Wide range of in-stock inch and metric bore sizes

Up to 8.20 kNm;
72,480 in.lb.

Sure-Flex is a TB Wood's original! Sure-Flex Couplings utilize a rubber (EPDM or Neoprene) or Hytrel™ thermoplastic flex element (sleeve) to transmit torque and accommodate shaft misalignments. Sure-Flex couplings have exceptional torsional flexibility, and the
4-way flexing action absorbs virtually all types of shock, vibration, misalignment, and
end float. Sure-flex couplings are an excellent choice when low cost, high flexibility, vibration damping, and easy installation are primary concerns.

•	Easy assembly
•	Spacer, bushed hub, and clamping hub designs in stock
•	Flexible design accommodates misalignment and protects equipment

Up to 4.50 kNm;
39,500 in.lb.

Dura-flex couplings "split-in-half" element design allows for easy element installation/ replacement without moving connected equipment or disturbing the shaft connection. Spacer design can accommodate a large range of shaft spacing with few parts. Patented design minimizes bond stress for long coupling life. Highly flexible and able to accommodate shaft misalignment while minimizing vibration and preventing damage to connected equipment.

•	Easy to assemble/replace
•	High Misalignment ratings
•	No maintenance/lubrication
•	Part-for-Part interchangeable with industry standard design
•	In-stock versatile spacer design can accommodate many configurations with few parts

Up to 60 kNm;
530,000 in.lbs.

Torsiflex couplings are specifically designed for the process pump and general industrial markets. Torsiflex is an all-metal disc coupling requiring no lubrication which incorporates a plug-in feature to allow installation and removal without disturbing the pump alignment.

Standard units are compliant with API 610 (American Petroleum Institute) and the more demanding API671 standard can be achieved.
In addition, the coupling is certified to meet ATEX 94/9/EC.

•	No maintenance
•	Zero backlash
•	Custom designs including close coupled, long spacer arrangements available
•	Easy interchangeability
•	Standard sizes available from stock

Up to 169 kNm;
1,500,000 in.lb.

State-of-the-art design from Bibby Transmissions, the original grid coupling manufacturer. G-Flex/Bibby 2000 Series is an all-metal coupling that provides positive protection against the damaging effects of shock loads and vibration. Aluminum horizontal cover (T10), and
all-steel vertical cover (T20) designs are available. G-Flex tapered grid couplings are an excellent choice where torsional flexibility/vibration damping are primary concerns.

•	Easy to assemble / replace
•	Part-for-part interchangeable with industry standard tapered grid coupling designs
•	Coupling sizes 1020 through 1140 in-stock in a range of standard bore sizes
•	Shot-peened tapered grid flex element for long life

Over 678 kNm;
6,000,000 in.lb

Unique diaphragm design permits high-torque density and low weight. Designed for years of dependable, low-maintenance performance.

•	Multiple, separated, convoluted diaphragms allow greatest design flexibilty for most demanding applications
•	API-671 compliant
•	Best for high axial travel requirments

Over 140 kNm;
1,240,000 in.lb.

Optimized disc profile for even stress distribution. Proprietary disc coating to prevent fretting and corrosion. Designed for years of dependable, low-maintenance performance.

•	Industry leader in power density
•	API-671 compliant
•	Best for reduced moment applications

Complete line of spur, helical, miter, bevel, worms and worm gears.

•	Thousands of gears are available for immediate shipment
•	Custom gears can be designed and manufactured
•	All gears are manufactured to the strictest standards for the highest quality product available

Up to 270 kNm;
2,400,000 in.lbs.

Form-Flex metal disc couplings consist of two hubs, a spacer and two high strength carbon or stainless steel flexible discs. Modified and special designs
are commonly supplied to meet specific application conditions. Available in carbon steel, stainless steel or with corrosion resistant coatings.

•	No maintenance
•	Zero backlash
•	Close couple, spacer and floating shaft designs available
•	Easy interchangeability

Up to 180 kNm;
1,600,000 in.lb.

GC Series couplings feature unitized, straight-sided flexible discs for ease of installation. Up-to-date design targeted specifically for heavy industrial applications. These couplings provide increased torque capacity per size by taking advantage of the latest materials and design technologies.

•	Unitized Flex Packs
•	Easier, faster installation
•	Interchangeable with industry standard designs
•	Fewer sizes to cover a full range of applications
•	Reduced spare parts inventory
•	Lower total cost of ownership
•	Special designs avaiable for higher-torque applications

Up to 600 kNm;
5,300,000 in.lb.

These torsionally stiff, light weight couplings are capable of transmitting high torques at high speeds while accepting significant levels of angular, radial, and axial misalignment. They are easy to install, suitable for hostile environments, require no lubrication and feature a high torque to weight ratio. Specific designs are available which meet the customer’s exact requirements. Standard units are compliant with API 671 (American Petroleum Institute) and ATEX 94/9/EC.

•	No maintenance
•	Standard and reduced moment designs available
•	Capable of being torsionally tuned to suit specific machinery requirements

HSB (High Speed Backstop) clutches are used on to prevent rotation in the opposite direction from the normal driving direction. When the fan drive is off, wind pressure from other fans or ambient breezes can apply sufficient force to rotate fan blades in the opposite direction. The HSB clutch allows the fan to freely rotate in the desired driving direction while preventing any rotation in the opposite direction.

Boston Gear's 800 Series contains a focused selection of compact, heavy duty helical gear drives that offer long-life performance and simplified maintenance. The 800
Series provides a functional
interchange for SEW Eurodrive
and other European manufacturers' helical gear drives, making it uniquely practical for replacement
applications.