The Wacker Neuson Shaft Key is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, including Arctic Bear XHD, Arctic Bear XHD NS, and standard HI 770 XHD diesel configurations. As a direct OEM replacement, this shaft key is sourced from Wacker Neuson and manufactured to the same specification as the original, ensuring a correct fit in the drive assembly. Compatible across multiple HI 770 XHD variants — including 1x16, 1x20, and 2x12 duct configurations — this part covers the full range of Extra Heavy Duty indirect air heater builds in the lineup.
Key Features
- Genuine OEM Precision: — Manufactured to exact dimensional tolerances required for proper shaft and hub engagement in the HI 770 XHD drive assembly.
- Drop-In Fitment: — Matches the original keyway geometry, seating directly into the shaft slot without filing or fitting adjustments.
- Broad HI 770 XHD Coverage: — Fits Arctic Bear XHD, Arctic Bear XHD NS, and standard HI 770 XHD models across 1x16, 1x20, and 2x12 duct configurations, as well as Extra Heavy Duty Air Heater builds.
- Torque Transfer Integrity: — A correctly fitted shaft key locks the rotating components together so the heater's blower or drive shaft delivers consistent airflow output; a worn or missing key causes slip, vibration, and loss of heat output.
- Drive Train Safety: — In indirect air heaters, a failed shaft key can cause uncontrolled shaft slippage under load — replacing it promptly maintains safe, controlled operation of the drive system.
A shaft key is a small, precision-machined component that sits in a machined slot (keyway) cut into both the shaft and the mating hub or pulley, locking them together so torque transfers cleanly from one to the other without slip. In an indirect-fired diesel air heater like the HI 770 XHD, the shaft key secures the blower or drive assembly, ensuring the fan delivers the rated airflow needed to distribute conditioned air effectively. When a shaft key shears, wears, or works loose, the connected component can spin freely on the shaft — resulting in reduced or lost airflow, increased vibration, and potential damage to surrounding drive components.
Part Details
| Part Number | 5000173152 |
|---|---|
| Old Part Number | 0173152 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Shaft Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
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.
