John Deere® Compatible Rotor Assembly Splined Coupling

Keep your rotor drive system in top condition with this premium aftermarket rotor drive coupling. Specifically engineered for John Deere® STS and S-Series combine harvesters, this heavy-duty coupling ensures reliable power transfer for all rotor types, including TriStream®, VariableStream®, and Bullet® configurations.

This heavy-cast coupling is a critical component for maintaining the integrity of your rotor drive train. Featuring a precision-machined 19-tooth splined bore, it provides a robust interface between the gearbox and rotor assembly. Implementing proactive maintenance by replacing worn couplings helps prevent catastrophic driveline failure and ensures an extended service life for your harvesting equipment.

John Deere® OEM Cross-Reference

Replaces OEM Part Number: AH150405

Rotor Drive Coupling for John Deere 9770STS, S670, S680, S780, S790 Models

Series	Models	Details
John Deere® 50/60 Series STS	9650STS, 9750STS, 9560STS, 9660STS, 9760STS, 9860STS	Rotor Drive
John Deere® 70/80 Series STS	9470STS, 9570STS, 9670STS, 9770STS, 9880STS	Rotor Drive
John Deere® S600 Series	S660, S670, S680, S690	Rotor Drive
John Deere® S700 Series	S760, S770, S780, S790	Rotor Drive
John Deere® S7 New Series	S7 600, S7 700, S7 800, S7 900	Rotor Drive

Technical Specifications & Features

• Quality Assurance: Heavy-duty cast construction to keep your equipment in top condition.
• Spline Configuration: 19-Tooth Spline | 2.50" Spline Bore.
• Mounting Hardware: Accepts 6 x 16mm x 80mm Class 10.9 fasteners (not supplied).
• Drive System: Includes 6 x 16mm precision-machined drive bushes.
• Fitment: Like-for-like replacement for original John Deere® rotor couplings.
• Available for fast Australia-wide dispatch from Collier & Miller.

Expert Maintenance Review

To keep your power transmission system in top condition, we recommend a thorough inspection of the rotor gearbox output shaft for spline wear during the installation of this coupling.

Standard preventative maintenance includes ensuring that Class 10.9 high-tensile bolts are used and torqued to specification. Replacing worn couplings simultaneously ensures an extended service life for your rotor assembly and prevents costly downtime during the harvest window.