The Genie 77877GT Shaft Adapter, Helac Rotator is a genuine OEM component designed for Genie S-series telescopic boom lifts, including the S-40, S-45, S-60, S-65, S-80, and S-85. As a direct OEM part, it is manufactured to the same standards as the original component installed at the factory, ensuring a correct mechanical interface within the rotator assembly. Cross-reference part number 77877GT against your machine's parts manual to confirm it is the right component for your specific unit before ordering.
Key Features
- Genuine OEM Dimensional Conformity — Produced to Genie's original specifications, this shaft adapter meets the exact tolerances required for proper engagement within the Helac rotator assembly.
- Direct OEM Replacement — Replaces the original part on a like-for-like basis, fitting directly into the existing rotator assembly without alteration.
- Broad S-Series Coverage — Compatible with the S-40, S-45, S-60, S-65, S-80, and S-85 telescopic boom lifts, covering a wide range of Genie straight-boom models.
- Rotator Function Integrity — A correctly fitted shaft adapter maintains the mechanical connection that allows the Helac rotator to function properly. A worn or damaged adapter compromises rotator operation and platform control.
- Operational Safety — Platform rotation is a critical function on telescopic boom lifts. Replacing a worn adapter with the correct OEM part helps maintain the mechanical integrity of the rotator system and supports safe machine operation.
The Helac rotator is the mechanism that drives platform rotation on Genie telescopic boom lifts, allowing operators to orient the platform independently of the boom's position. The shaft adapter is the interface component that connects the rotator's drive to the rotating assembly — if this adapter wears, cracks, or loses its mechanical fit, the rotator loses the ability to transmit motion cleanly, resulting in imprecise or failed platform rotation. Replacing a compromised adapter with a genuine Genie part restores the correct mechanical connection and keeps the rotator performing as intended.
Part Details
| Part Number | 77877GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Shaft Adapter, Helac Rotator |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| S-80 | S-80 |
| S-85 | S-85 |
| S-60 | S-60 |
| S-65 | S-65 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
