The Wacker Neuson Key 1/4 x 1/4 x 1 1/2 Undersized is a genuine OEM component designed for the HI1000 and HI1000DGM indirect air heater series. Sourced directly from Wacker Neuson, this key is manufactured to the same specification as the original, ensuring a correct fit on first installation. It is confirmed compatible with multiple HI1000 and HI1000DGM configurations, making it a straightforward service replacement for technicians working on these units.
Key Features
- OEM-Spec Dimensional Accuracy — Manufactured to the exact undersized profile of the original, ensuring the key seats correctly in its keyway without play or binding.
- Drop-In Shaft Replacement — Sized and profiled to locate directly into the existing keyway on HI1000 series heater shafts, requiring no reworking of mating components.
- Confirmed HI1000 Series Fitment — Verified for HI1000 and HI1000DGM indirect air heaters across multiple machine configurations.
- Torque Transmission Integrity — A correctly fitted key locks the rotating component firmly to the shaft, maintaining full and consistent power transfer through the drivetrain.
- Genuine Wacker Neuson OEM Part — Supplied as an authorized Wacker Neuson component under part number 5100051420, backed by the manufacturer's standard parts quality assurance.
A woodruff or square key is a small but load-bearing component that locks a rotating part — such as a pulley, gear, or fan hub — to its drive shaft, preventing it from slipping under torque. When a key wears, shears, or becomes loose in its keyway, the driven component loses its positive connection to the shaft, causing slippage, erratic operation, or complete loss of drive to that assembly. Replacing a worn key promptly with the correct undersized specification restores the precise mechanical engagement the shaft pairing requires and prevents accelerated wear to the keyway itself.
Part Details
| Part Number | 5100051420 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Key 1/4 x 1/4 x 1 1/2 Undersized |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI1000DGM | HI1000DGM | 5100049275, 5100049276 |
| HI1000 | HI1000 | 5100049274, 5100049273 |
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.
Wacker Neuson
Wacker Neuson Key-Sq,1/4 X 2.25 Hardened,Undersized | 5000165520
