Jaw Coupling replacements to replace Lovejoy, Boston Gear, SKF Jaw couplings - L type, S type, AL type, SS type and CJ type.

Jaw coupling

The Jaw coupling has been an industry standard for a number of years, for engineers looking for a flexible coupling solution for high speed minimal misalignment applications. Companies like Lovejoy, TB Woods, Tsubaki and Ruland all have Jaw Couplings but the design is all the same so they all fail the same way.

The traditional couplings like universal joints are all a 3 piece design, which means 3 things can go wrong – Worn Spider insert, cracked hubs are just two of the things that can go wrong.

The other downside is it wasn’t able to handle angles larger than 3° before they start to wear out. The Spider insert starts to wear and will disintegrate, while the coupling won’t fail it will be reduced to metal on metal increasing vibration and leading to potential equipment damage.

Add to that, the fact it cannot handle large torque loads makes them limited in their use and mechanical engineers have to design their equipment around these limitations.

1° of jaw misalignment means exponential insert wear

Such a low angle of usage means they will need constant maintenance as working at 1° will mean it will be constantly be wearing the spider as any weight or variation in load will mean it will not be at its optimal angle of usage. The insert mainly

One product replaces many – Jaw Couplings come in L Jaw and CJ Jaw configurations – All low torque as any angle of use over the 1° the spider insert will wear quickly.

This means where applications that need torque and misalignment while still working at high speed can now be achieved without resorting to a beam or jaws (which still cannot work at increased angle misalignment.

Ruland – JC series, JS series, MJC jaw series.

Guardian Coupling – 28/38, 38/45, 42/55, 48/60 series.

TB Woods – L090, L100, AL100, SS100, L110, AL110, SS110, L150, AL150, SS150, L190, L225, L276 series.

Lovejoy – L090, L100, AL100, SS100, L110, AL110, SS110, L150, AL150, SS150, L190, L225, L276, C276 (SOX) CJ 48/60 42/55, CJ38/45, CJ28/38 series.

R+W America – EK series.

Tsubaki – L099, L100, L110, L150, L190, L225, L110A series.

Boston Gear – FC25-FC45 FC30, FC38, FC45 series (XFCBB, XFCR, XFCA inserts).

Ringfeder – GWE Z5106.1, GWE Z5104.1, GWE 5104.

GAM – EKZ series, KM series, KP series, KG series.

SIT – Trasco ES series.

KTR – Rotex series.

SKF – FRC90, FRC110, L100, L110, L150, L190, L225.
Which jaw coupling do you need to replace

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