250018-551 Sullair OEM Drive Coupler

The 250018-551 Sullair OEM Drive Coupler is a coupling for Sullair portable rotary screw compressors. This coupling uses a Saga-style design that differs from the more common Arcusaflex couplers found in other Sullair models, reflecting the specific driveline requirements of its target compressor platform.

Saga-series couplings are specified in certain Sullair compressor models where the torque profile and shaft configuration require this coupling type rather than an Arcusaflex. The design provides effective torsional damping through a different element geometry than the Arcusaflex, with its own distinct installation and alignment requirements.

The 250018-551 is a direct factory replacement. Do not substitute with an Arcusaflex-style coupling even if the physical dimensions appear similar – the torsional characteristics differ between coupling types and must match the compressor’s design requirements. Follow Sullair’s service procedure for this specific coupling type.

Available from Stark Industrial Products for Sullair compressor service teams.