Flexible Couplings
64Pages

ALTRA INDUSTRIAL MOTION ucoDynatork An Altra Industrial Motion Company

Huco Dynatork offers a wide variety of couplings for precision industrial and commercial applications worldwide. Selecting the right shaft coupling can be the difference between a drive system that provides the required dynamic response and one that is catastrophic. The application constraints lead engineers towards products that have different levels of torsional stiffness, vibration dampening, backlash, and low bearing loads. Huco can respond quickly with a wide variety of couplings such as general purpose, beam style, and precision couplings suitable for highly reliable applications....

General Purpose Couplings Oldham couplings are designed for use in stepper drives and most applications including positioning slides, pumps, actuators, etc. Uni-Lat models are ideal for encoder, resolver, tachometers, potentiometer drives, as well as small positioning slides, dosing pumps, and general light drives. Flex P units can be utilized in light power drives, pumps and small generators. Friction Clutches Vari-Tork™ friction clutches allow slippage when the torque being transmitted reaches a pre-determined threshold. Used in all types of small drives to help protect personnel and...

Huco Engineering Industries Ltd. ^ 440 North Fifth Avenue Chambersburg, PA 17201 - USA Tel: (888) 829 6637 “O Membrane, Stainless Steel Bellows, Ni Bellows Huco-Oldham & Uni-Lat Single Beam, Multi-Beam, Step Beam Jaw (Spider), Double Loop Huco-Pol & Huco Teleshafts Huco Vari-Tork, Slip Clutches

Building an Ordering Part Number is fast and easy using the Specifications and Bore Size charts on each product page. Simply select the coupling type, coupling size and two bore sizes you require (always place smaller bore first). Always include (.) in Part Number. Ordering Number System Example: 536.20.1418 The following key factors should always be considered when specifying flexible shaft couplings: • Torsional Stiffness • Backlash • Torque • Life • Shaft Attachment Type • Misalignment Requirements Service Factors • Torque capacity values shown in the coupling specification charts assume...

Selecting Flexible Couplings Metric Inch Inch Round Metric keys Inch keys Keywayed I I bore key size key size bore mm fraction decimal code w x h w x h code Metric Inch Inch Round Metric keys Inch keys Keywayed I I bore key size key size bore mm fraction decimal code w x h w x h code Specifying a Keywayed Bore To specify a keywayed bore, prefix the 2-digit bore code number with a “P” for metric keyways or an “R” for an inch keyway. Examples: Metric: 538.34.P28P28 In this example both bores have a keyway. Inch: 538.34.24R36 In this example only the...

Installing Couplings Flexible Coupling Types General instructions 1. Ensure that shafts are free of burrs, damage, or foreign matter, and can penetrate the bores. 2. nstall the coupling by holding the shaft and the related hub, rotating it back and forth as you progress it along the shaft. I 3. Do not apply any forces that cause extension, compression or lateral displacement of the coupling beyond its permissible offsets. Normal installation When to use single & two-stage couplings Single-stage a) Position and secure the larger of the 2 shafts (if different) and progress the coupling onto...

Sliding Disc type (Oldham)Blind hub a) Slide hubs on to both shafts. b) Align shafts to within the permissible offsets and position to leave minimum gap 2 between terminations. Secure both shafts, check alignment and correct if necessary. c) Position R/H hub with inboard face flush with shaft termination and tighten screws. d) Slide disc radially on to the tenons of the R/H hub. Ensure the disc is fully seated. d) Place a gap gauge flat against the bottom of the exposed slot in the disc and push the L/H hub into full engagement by manipulating the L/H shaft. e) Align shafts within the...

Installing Couplings Beam Type Relief Under The Beams Most Multi-Beam couplings can be supplied with or without relief under the beams as shown in the diagrams below. When the drive or driven shafts extend under the beams relief is essential to ensure that the coupling remains flexible. Where non-relieved versions are used, shafts must not be allowed to penetrate under the beamed section of the coupling. Unless otherwise specified, relieved versions will be supplied. Pilot Bores Couplings can be supplied ‘pilot bored’ for opening out by the customer. Pilot bores are plain drilled holes,...

High Performance Couplings • Stainless Steel Bellows • Nickel Bellows • Flexible Membrane (Disc) • Torsionally rigid design • No moving parts • All-metal construction The operating principles of Flex B, Flex K, Flex Ni and Flex M offer the highest performance available with flexible couplings. With excellent kinematic properties and torsional stiffness of a very high order, they are suitable for servo drives and satisfy the criteria for highly dynamic position and velocity control systems. Bellows couplings have the greater torsional stiffness while Flex M have the more tolerant flexural...

Flex-B Stainless Steel Bellows Couplings Set screw hubs L L1 Ref. 530 Short type for precisely aligned shafts Ref. 532 Long type for greater angular offsets or axial motion Ref. 534 Stretched type for greater radial misalignment and lower bearing loads Ref. 536 Short type for precisely aligned shafts Ref. 538 Long type for greater angular offsets or axial motion Ref. 540 Stretched type for greater radial misalignment and lower bearing loads Materials & Finishes Comparative properties Hubs: Al. Alloy 2014T6 and Clear anodised finish Type Bellows: Spring quality stainless steel Joint...

Size Screw Hubs in. in. STANDARD BORES Load capacity depends on application conditions: see page 4for details © Length of supported thro' bore. Shafts can near-butt. © Maximum recommended tightening torque. © Values apply with max bores. © Peak torque. Select a size where Peak Torque exceeds the application torque x service factor. (see page 4) © Max. compensation values are mutually exclusive. © Torsional stiffness values apply at 50% peak torque with no misalignment, measured shaft-to-shaft with largest standard bores. Note that in some vendors' catalogs the given torsional...