Stoffel Polygon Systems, Inc. - Tuckahoe, NY
Distributor, Manufacturer, Custom Manufacturer
Polygons minimize stress concentration risers, transmitting twice the torque of splines in the same shafts diameter; torsional vibration & shock-load capability; self-centering ensures concentricity & balance; ground after hardening
www.stoffelpolygon.com/

Mayr Corp. - Waldwick, NJ
Manufacturer, Custom Manufacturer
ISO 9001:2008 & ISO 14001:2004 certified. Manufacturer of standard & custom zero backlash couplings including servo, steel, bellow & shaft couplings. Available with 4 Nm to 24,000 Nm nominal torque. Various features include compact designs, vibration-damping, frictional & positive locking, plug-in type, torsional rigidity & wear resistance. ATEX, OHSAS 18001 & OHRIS certified. On-time delivery.
Brand Names: Mayr, Primeflex, ROBA, smartflex
www.mayr.com/en/products/shaft-couplings/

GTC Falcon, Inc. - Plymouth, MA
Manufacturer
Manufacturer of miniature shaft couplings are constructed with constant velocity assembly, high flexibility for misalignments of up to 15 degrees, high speed operation for speeds in excess of 60,000 rpm, telescoping assemblies, stainless steel construction for corrosion resistance. Bore sizes available from 1/16 in. to 1 in., 7/32 in. to 1-1/2 in. body diameter.
www.gtcfalcon.com/coupling.htm

Candy Manufacturing Co., Inc. - Niles, IL
Manufacturer, Custom Manufacturer
Supplier of a full line of zero-backlash, flexible-shaft motion couplings. These precision couplings include beam, bellows, curved jaw, disc, encoder & oldham, all available in a variety of shaft connecting configurations including setscrew, keyway, clamp & locking assembly.
couplink.candycontrols.com/

DieQua - Bloomingdale, IL
Distributor, Manufacturer, Custom Manufacturer
Supplier of zero backlash flexible shaft couplings to accommodate parallel, axial & angular misalignment. Offering two primary technologies, high rigidity stainless steel bellows & damping elastomer insert jaw designs. Both are offered in sizes from miniature, for instrumentation & encoders, to larger models for dynamic motion control servo applications & high torque industrial machinery. Both offer multiple connection designs for inch or metric shafts. Custom designs are a specialty. A torque limiting feature is also available.
Brand Names: R+W
www.diequa.com/products/products.html#coupl...

PIC Design - Middlebury, CT
Manufacturer, Custom Manufacturer
Manufacturer and custom manufacturer of flexible zero backlash couplings for lead screws, gear boxes and motion control systems. Specifications include 4 mm to 12 mm bore sizes, 1 in.-72 to 1/4 in.-28 clamp screw sizes, 0.8 Nm to 36.05 Nm momentary dynamic torque rating and 0.002 degree/Nm to 0.054 degree/Nm torsional rating. Zero backlash couplings are available with integral clamps and torsional stiffness. Items are available in stock.
pic-designcatalog.com/Images/pdfcat/section...

Stock Drive Products / Sterling Instrument - SDP/SI - New Hyde Park, NY
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2000 & AS 9100B certified custom manufacturer of couplings including zero backlash couplings. Types of couplings include bellows, casing, clutch, disc, flexible, fluid drive, friction clutch, gear, jaw, rigid, servo, shaft, slip & torque magnetic & limiting couplings.
www.sdp-si.com/web/html/couplings.htm

KTR Corporation - Michigan City, IN
Manufacturer
ISO 9001:2008 certified manufacturer of fatigue resistant zero backlash bellows couplings for motion control & servo applications. Specifications of zero backlash bellows couplings include temperature up to 536 degrees F, 16 in. to 55 in. size, 5 Nm to 340 Nm torque & 4,500 Nm/radius to 95,800 Nm/radius torsional & 43 N/mm to 132 N/mm axial spring stiffness. Bellows couplings feature brass rings, stainless steel bellows & double slit cross clamped aluminum hubs.
Brand Names: KTR
www.ktr.com/en/products/couplings/toolflex/...

T.E.A. Machine Components, Inc. - Richmond, VA
Distributor
Distributor of zero backlash and torsionally rigid design multi-beam couplings or couplers. Specifications include 5,000 rpm maximum speed, -40 degrees C to +120 degrees C temperature and 6.4 mm to 63.5 mm OD. General purpose single piece couplings are suitable for stepper and servo drives, encoders, tachogenerators and other light duty power transmission applications.
Brand Names: Huco
www.teausa.net/ProductCategoryModules/Speci...

R+W Coupling Technology - Bensenville, IL
Manufacturer
Engineering and manufacturing of zero backlash flexible shaft couplings for motion control and power transmission applications, with a wide variety of designs for torsional rigidity, vibration damping, and overload protection. For torque ratings from 0.01 to 160,000 Nm, and with English or metric bores, couplings are customizable for most applications, while many standard models ship from stock. Configurable CAD models are available in a large number of file formats online.
Brand Names: R+W
www.rw-america.com/

Climax Metal Products Company - Mentor, OH
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2008 certified manufacturer of standard & custom zero backlash couplings. Products include one-piece couplings, two-piece couplings & keyless rigid couplings are also available.
www.climaxmetal.com/rigid-couplings.htm

The Precision Alliance (TPA) - Fort Mill, SC
Distributor, Manufacturer, Custom Manufacturer, Manufacturers' Rep
Provider of a wide variety of linear motion & positioning systems. Can supply higher precision & unique solutions for linear guides, slides & bearings, ball screws, cam roller bearings, heavy-duty telescopic slides, shaft couplings & more.
onlinecatalog.tpa-us.com/category/shaft-cou...

Zero Backlash Couplings Products
	XBW - Double Disk Flexible Shaft Couplings - Clamp Type XBS - Single Disk Flexible Shaft Couplings - Clamp Type XGT/XGS Composite Flexible Shaft Couplings - Clamp Type More

Renbrandt, Inc. - Boston, MA
Manufacturer, Custom Manufacturer
Manufacturer of standard & custom zero backlash couplings. Zero backlash couplings include flexible disc servo & flexible disc couplings. Flexible disc servo couplings are available in O.D. from 3/4 in. to 2-1/2 in. & bore sizes from 4.7625 mm to 25.4 mm. Used for precision instruments, encoder drives, robotics, aircraft equipment, radar, laser, computers & precision remote control applications. Flexible disc couplings range in overall dia. from 0.38 in. to 2.50 in. & lengths from 0.63 in. to 3.50 in.
Brand Names: Fleximite, One-Piece Disc
couplings.renbrandt.com/category/flexible-c...

Carlson Dimond & Wright, Inc. - Chesterfield, MI
Distributor, Manufacturer, Custom Manufacturer, Manufacturers' Rep, Service Company
Distributor of couplings including mechanical fluid, sleeve type, straight through, torque limiting & measuring, universal joint, rotary & zero backlash couplings. Other products include bearings, belt drives, conveyors, conveyor pulleys, gears, linear actuators, sprag clutches & torque limiters.
www.cdwdrives.com

Servometer Precision Manufacturing Group, LLC - Cedar Grove, NJ
Manufacturer, Custom Manufacturer, Service Company
ISO 9001:2000 certified manufacturer of standard & custom zero backlash shaft couplings. Available with stainless steel hub & torque capabilities from 2.0 in.-oz. to 4000 in.-oz. Shaft couplings range in bore dia. from 0.079 in. to 1.0 in., OD from 0.250 in. to 2.40 in. & overall lengths from 0.480 in. to 2.16 in. Used in encoders, resolvers, servos, motion control instrumentation & robotics.
Brand Names: Servo-Flex, Servo-Torque, Servometer
www.servometer.com/product.php?Id=3024

Brewer Machine & Gear Co. - Saint Louis, MO
Distributor, Manufacturer
Mfr's rep. & distributor of torque limiting, rigid, universal joint & zero backlash couplings. Elastometric, flexible, fluid, gear, beam, chain, disk, grid, jaw & shear couplings are also available.
Brand Names: Climax, Hub City, Lovejoy, Sier-Bath, TB Woods, UST

Gates Corporation - Denver, CO
Manufacturer, Custom Manufacturer
Manufacturer a full line of couplings & adapters for hydraulic or industrial transfer applications including acid-chemical, air, water, food & beverage, oilfield, petroleum, material handling, pressure washer, steam, multi-purpose, marine & special applications.

Zero-Max, Inc. - Plymouth, MN
Manufacturer, Custom Manufacturer
Manufacturer of servo couplings, torque limiting couplings, & zero backlash couplings. Feature zero backlash flexible metal disks, zero backlash clamp-type hubs, low inertia, high torsional stiffness, 10,000 RPM capability, torque capability up to 885 lb. in., bore sizes from 4 - 35 mm., & single or double disk designs. Available custom made.

Couplings Direct - Fort Mill, SC
Distributor
Distributor of standard & custom miniature shaft couplings including torsional control, torsional vibration & zero backlash couplings. Oldham, slit, flexure, curved jaw, spring disk, U-joint & bellows couplings are available. Setscrew type couplings, semi-split type couplings, clamp type couplings, split type couplings & keyway type couplings are also available. Oldham couplings range in rated torques from 0.2 Nm to 36 Nm. Spring disc couplings feature zero backlashes. Bellows couplings range in rated torques from 0.07 Nm to 270 Nm.
Brand Names: NBK, Reli-A-Flex

Nexen Group, Inc. - Vadnais Heights, MN
Manufacturer, Custom Manufacturer
Manufacturer of industrial linear motion products & components including zero backlash couplings used in clutch applications. Couplings are available in different styles & sizes with continuous maximum dynamic forces ranging from 70 N to 2,000 N & intermittent maximum dynamic forces ranging from 105 N to 3,000 N. Features include misalignment capabilities for precision linear applications. Typical applications include linear actuators, motors & precision guide rods.

Ringfeder Power Transmission USA Corporation - Westwood, NJ
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2000 Compliant Keyless Shaft-Hub Locking Devices, Locking Elements, Locking Assemblies & Shrink Discs; Ball Detent Torque Limiters, Friction Clutches, Disc Couplings, Rigid Couplings, Flexible Couplings & Friction Springs

SIPCO, Mechanical Linkage Solutions - Webster, TX
Manufacturer, Custom Manufacturer, Service Company
Manufacturer of standard & custom industrial mechanical components including zero backlash couplings. Types include standard bellow couplings & safety bellow couplings. Standard bellow couplings are available in BOC & BLC types with options of aluminum & stainless steel hubs. Features include high torsional stiffness, zero backlash, low moment of inertia, compensation for axial, angular & lateral misalignments. Safety type bellow couplings feature low moment of inertia, adjustable settings, automatic re-engagement after 1 revolution, re-engagement accuracy of +/- 3 percent & disengagement within 1 to 3 ms. Couplings can be customized as per design requirements.
Brand Names: Technogear

Stromag, Inc. - Dayton, OH
Manufacturer, Custom Manufacturer
Flexible couplings for controlling torsional vibration & misallignment on power transmission drive systems. Torque ranges from 15nm to 270,000nm. Couplings particularly suited for diesel & electric motor applications.

Oren Elliott Products, Inc. - Edgerton, OH
Manufacturer, Service Company
Complete line of flexible & rigid shaft couplings, including Oldham, jaw & magnetic flexible couplings; universal joints & rigid shaft couplings in a variety of materials, with either set screws or shaft clamping mechanism. Inch shaft sizes from 0.125 to 1.125 shaft diameter; metric shaft sizes from 2mm to 30mm shaft diameter.

MRM Incorporated - Novi, MI
Distributor
Distributor Of Automation & Pneumatic Equipment & Supplies & Valves
Brand Names: R+W