The Wacker Neuson Square Key is a genuine OEM component designed for the BFS 2020AS floor saw and the PT3 series centrifugal trash pumps, including the PT3Y, PT3V, PT3A, PT3B, and PTK3 models. As a direct OEM replacement, the is manufactured to the exact dimensions required for proper shaft-to-hub engagement across these machines. This small but critical drivetrain component ensures torque is transferred cleanly between rotating shafts and their mating components, keeping both cutting and pumping operations running at full efficiency.
Key Features
- OEM-Matched Dimensional Accuracy — Manufactured to the exact width, height, and length tolerances specified by Wacker Neuson, ensuring the key seats fully in its keyway without play or rocking.
- Drop-In Shaft Replacement — Slots directly into the existing keyway on BFS 2020AS and PT3 series shafts with no filing or fitting required.
- Broad PT3 Series Coverage — Compatible with PT3Y, PT3V, PT3A, PT3B, and PTK3 75mm/3-inch centrifugal trash pump variants, as well as the BFS 2020AS floor saw.
- Prevents Torque Slippage — A correctly sized square key locks the impeller or blade hub to the shaft so full drive torque reaches the working component — a worn or undersized key causes hub slip, vibration, and accelerated shaft damage.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, this part carries the same material grade and hardness specification as the original factory-installed key.
A square key is a small rectangular piece of hardened metal that sits in a machined slot — called a keyway — cut into both a shaft and its mating hub or impeller. Its job is to create a positive, non-slip connection between those two rotating components so that torque from the engine is transferred without any relative movement between the shaft and hub. When a square key shears, wears, or goes missing, the hub can spin freely on the shaft, causing immediate loss of drive to the cutting blade or pump impeller and rapid wear to the keyway itself. Replacing a damaged key promptly with the correct OEM part — like the Wacker Neuson 5000054282 — protects the surrounding shaft and hub from the far more costly damage that continued operation without a key would cause.
Part Details
| Part Number | 5000054282 |
|---|---|
| Old Part Number | 0054282 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Square Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BFS 2020AS SAW | BFS 2020AS | 5000620086 |
| 75mm/3in Centrifugal Trash Pum p | PT3Y | 5000007118, 5000007119 |
| 75mm/3in Centrifugal Trash Pum p | PT3V | 5000007171 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006729, 5000006730 |
| 75mm/3in Centrifugal Trash Pum p Kit (without engin | PTK3 | 5000006747 |
| 75mm/3in Centrifugal Trash Pum p | PT3B | 5000006731 |
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.
