163777551 Vermeer OEM Coupling Kit

The 163777551 Vermeer OEM Drive Coupler is a complete drive coupling assembly used to connect the diesel engine flywheel to the cutting drum driveline on Vermeer horizontal grinders. The coupling design accommodates the high shock loads, torque variations, and continuous-duty cycles characteristic of grinding heavy material in land clearing, mulch production, and recycling operations.

The 163777551 is a complete coupling assembly consisting of four components: the rubber element with flange (single integrated component), the spline hub, the bolts that secure the spline hub to the rubber element, and the washer set used when mounting the coupling flange to the engine flywheel. Replacing the complete assembly during scheduled maintenance is the OEM-recommended approach for restoring driveline performance and preventing premature wear on adjacent components.

Known applications:

Vermeer HG6000 Horizontal Grinder
Vermeer HG6000E Horizontal Grinder
Vermeer HG6000TX Horizontal Grinder

The flexible rubber element provides the torsional flexibility needed to absorb shock loads when the cutting drum encounters dense material, dampen engine firing-pulse vibration, and accommodate slight angular and axial misalignment between the engine and driveline shafts. The spline hub interface ensures positive torque transfer under heavy cutting loads.

The 163777551 is a direct OEM replacement. During installation, follow the Vermeer service manual for proper bolt torque sequence on both the spline hub bolts and the flywheel mounting bolts. Use the included washer set when seating the coupling flange against the engine flywheel. Inspect the rubber element for cracking, hardening, or delamination at each scheduled service interval.

Stark Industrial Products carries Vermeer OEM drive couplers for horizontal grinder applications.