FLEXIBLE SHAFT COUPLINGS

SHAFT TO SHAFT DRIVE CONNECTIONS

THE SIMPLAFLEX SPRING TYPE SHAFT COUPLINGS

Extremely robust with three layers each of three springs connecting between steel hubs.  They are compact and can run at high speeds, also with a particularly high angular misalignment capacity up to 6 degrees.  Torques range from 2.5 to 900 Nm and shaft sizes up to 75mm.
Type - Simplaflex MM,MF, FF

Techdrives brings you flexible shaft couplings suiting different machine drives with shaft sizes from 3 to 150mm.  Torsionally soft jaw and Oldham couplings suit simple machine requirements. Curved jaw couplings match standard Rotex dimensions.  All metal couplings such as beam, bellows, spring and disc couplings have higher specifications. International manufacturers include RULAND, Monninghoff and Lovejoy.  Short delivery times are usually possible and Techdrives offer advice and support from our Engineering staff.  Customised models are possible for volume applications.


Other shaft connections available include rigid couplings, shaft collars, locking bushes and universal joints.


THE OLDHAM, OR SLIDING DISC FLEX COUPLING

An economic solution for small drives with shafts 3 to 30mm.  Two aluminium clamp hubs connect through a disc (element) of acetal or nylon.  Torques range from 0.1 to 21Nm and the design with acetal discs is moderately torsionally stiff and free of backlash. Clamp hubs remove the need for keyways.  Manufacturer: RULAND, Type Oldham

BEAM FLEXIBLE SHAFT COUPLINGS

are constructed in one piece from alloy or stainless steel suiting drive shafts 3 to 12mm and torques up to 5Nm.  These miniature couplings are torsionally stiff and backlash free with a high radial misalignment capacity.  
Manufacturer: RULAND Type: Flexbeam, MWC, MWS

BELLOWS FLEX SHAFT COUPLINGS

Constructed with stainless steel bellows connected to aluminium alloy clamp hubs. The result is a coupling that is very stiff and ideal for precision drives, reversing drives, tachos and encoders. Torque range is 2.5 to 45Nm, shafts 3 to 25mm.   Manufacturer: RULAND , Type : MBC

    

                          



shaft couplings - beam shaft couplings couplings - oldham or sliding disc bellows shaft couplings simplaflex spring type shaft couplings curved jaw shaft couplings

CURVED JAW FLEXIBLE SHAFT COUPLINGS

Simple, inexpensive and very common in European machinery where dimensions have become interchangeable, for example in many cases with KTR Rotex .  A simple 3 piece coupling will have two cast iron or aluminium hubs and a polyurethane element for torques 11 to 1465Nm, shafts 14 to 90mm.  More sophisticated variants include clamp hubs which can have zero backlash and compact high torque models.  Different grades of element, for example rubber, hytrel and bronze can vary the torsional softness and misalignment capacities.
Manufacturer:Ruland,Type - GR, GESM, GESA

STRAIGHT SIDED JAW FLEX SHAFT COUPLINGS

Similar to curved jaw types but can be more economical through the use of sintered  iron hubs.  Shaft sizes are 4 to 67mm with torques up to 750Nm.  Different types of element, for example rubber, hytrel and bronze, can vary the performance.
Manufacturer - Lovejoy Type - L

straight sided jaw shaft couplings

METAL DISC SHAFT COUPLINGS

Bolted assemblies with steel or aluminium hubs connecting through laminated steel flex packs.  To connect two fixed shafts a double flexing design with two packs is needed.  If one shaft is floating, a single flexing design is possible.  Different models suit shafts from 4 to 150 mm, torques up to 9000Nm.  Metal disc couplings are torsionally stiff, backlash free and maintenance free.  Spacer versions up to 5m long are possible.
Manufacturer: Moenninghoff Type - Servoflex 318 & 328, Arcoflex 314.

BARREL GEAR SHAFT COUPLINGS

use a sleeve with internal splines to connect between two iron hubs.  Small barrel gear couplings for torques 10 to 700Nm and shafts up to 80mm use nylon sleeves.  They are simple and well suited to machines where the axial misalignment is high.  

THE HEXAFLEX RUBBER DISC SHAFT COUPLINGS

is a backlash free bolted assembly with high misalignment capacity. Torques are 100 to 2250Nm with shafts up to 95mm. The rubber disc has layers of reinforcing cord making it very robust.  Spacer versions are possible.

Manufacturer: Monninghoff      Type 313

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SITEX ST STEEL GEAR SHAFT COUPLINGS

Combining very high torque capacity with compact dimensions, these gear couplings are rated from 600 to 835000Nm. AGMA standard sizes available.
Manufacturer: SIT Types: C,CV,CF

Sitex ST steel gear shaft couplings

Understanding the basics of shaft couplings

Flexible shaft couplings are used to connect two drive shafts accepting misalignment and reducing noise and vibration

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01234 753201

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