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Mechanical joint with pin or screw for synchronous belts

Courroie crantée Supergrip ERO Joint
Courroie dentée AT20 ERO Joint (pin joint)
Courroie dentée T10 ERO Joint avec guidage et revêtement
Courroie dentée T10 ERO Joint

The ERO Joint® mechanical fastening system is available for T10, AT10, T20, AT20, 8M, 14M pitches, for all widths over 16 mm, in steel, Kevlar or stainless steel reinforcement (minimum recommended pulley diameter is 50 mm).

Comparison of widths on polyurethane belts

ERO Joint® can be used with all types of coating (Supergrip, Linatex, PU, Sylomer, etc.) and all types of guiding.

ERO Joint® HP compared with ERO Joint® and ERO Joint® WT
ERO Joint® WT ERO Joint® HP ERO Joint® (standard)
WT = Wide Timing HP = Hinge Pin Like the Pin Joint/Lock
Pitch WT10 - WH T10 - AT10 - H - T20 - AT20 - 8M - 14M T10 - AT10 - 8M - 14M
Width 150mm to 1828mm 10 mm to 450mm 16mm to 100mm
Permissible tensile force 400N for 150mm width (customer data) Like welded belts (1170N/25mm T10) (1871N / 25mm AT10) Very low (300N / 25mm T10) (300N / 25mm AT10)
Principle 3 flat pins 1 hinge pin 8 to 10 pins
Principes d'assemblage des courroies ERO Joint

ERO Joint® Ultimate

Schéma courroie

In the Ultimate version, the ERO Joint® mechanical splice transmits 50% of the power of a Flex belt (true endless belt).

Between the pulleys, there is always ½ continuous tight side to ensure the belt's mechanical strength and rigidity.

The ERO Joint® wide timing belts are spliced in our production using a patented process and fitted with the length requested.


  • Quick and easy assembly.
  • Thanks to this mechanical closing system, maintenance times are optimized, reducing production downtime.
  • Assembly can be realized by screwing or with a tool. This tool enables the pre-tension of belt and makes pins threading easier.


Courroie ERO HP AT20

ERO Joint® HP (Hinge Pin), as strong as a welded belt

Mechanical strength and service life are better than any other mechanical closing system.

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