Bellows Couplings

GAM Bellows Couplings GAM offers you a complete line of bellows couplings. We can help you define your coupling needs and offer you technically superior and cost-effective solutions. Our extensive manufacturing capabilities and highly skilled machinists enable us to customize your couplings for your exact applications and we offer same day delivery for custom bored couplings.


  • Nominal torque capacity from 0.44 Nm to 2,500 Nm
  • High torsional rigidity, low inertia, zero backlash and misalignment compensation
  • Use at temperatures up to 570°F (299°C) maintence free and without any limitations
  • Patented Press-Fit method of joining the bellow to the hubs withstands harsh environments where glued connections cannot
  • High speed capability with rotational speeds up to 25,000 RPM without additional balancing
  • Custom bored to your application

Need a bellows coupling fast?

Most of our KM, KP, KLC, and KG series ship in 5 business days standard - custom bores and keyways included!

Need a bellows coupling faster? Learn more about our Express Service.

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KM Bellows Coupling


KP Bellows Coupling


KLC Bellows Coupling


KG Bellows Coupling


KG Bellows Coupling


KR Bellows Coupling


Bellows Couplings Zero Backlash KSD series


Bellows Couplings Zero Backlash KHS series


Bellows Couplings Zero Backlash KSS series


Bellows Couplings Zero Backlash KGH Series


Bellows Couplings Zero Backlash KPP Series


Bellows Couplings Zero Backlash KPS series


Can keyways be machined into GAM couplings?

Keyways are not recommended by GAM as they can actually introduce backlash into machine systems overtime. While not recommended, keys can still be machined into the couplings upon request.
Read more about coupling keyways >

What is the standard bore tolerance for GAM couplings?

The standard bore tolerance provided on GAM couplings is G6.
Read more about bore tolerance >