Wacker Neuson 5000126540 Cup Spring

The Wacker Neuson Cup Spring is a genuine OEM component designed for the BFS series floor saws, including the BFS735, BFS940, BFS1345, and BFS1350 models. As a direct factory replacement, this cup spring installs exactly as the original, maintaining correct blade arbor tension and mechanical preload across the full BFS product family. Sourced directly from Wacker Neuson, part meets the same material and dimensional standards as the part it replaces. Whether you are servicing a BFS 914, BFS 935, BFS 1345, or any other BFS variant, this is the correct OEM spring for the job.

Key Features

• Genuine OEM Spring Rate: — Manufactured to the exact load and deflection specification Wacker Neuson engineered into the BFS floor saw, so arbor preload is restored to the original design value.
• Direct Drop-In Replacement: — Matches the original seating diameter and stack height, fitting the arbor assembly without any modification to surrounding hardware.
• Broad BFS Series Coverage: — Fits a wide range of BFS floor saw models including the BFS735, BFS914, BFS935, BFS940, BFS1345, and BFS1350, covering gasoline and petrol variants across multiple production runs.
• Sustained Blade Engagement Performance: — A correctly tensioned cup spring maintains consistent axial clamping force on the blade flange; a worn or collapsed spring can cause blade slippage, vibration, and uneven cuts.
• Blade Safety Compliance: — Proper clamping force is critical to secure blade retention during operation; replacing a fatigued cup spring restores the mechanical integrity required for safe cutting at operating speed.

A cup spring — also known as a Belleville washer or disc spring — is a conical washer designed to apply a precise, consistent axial load when compressed. In a floor saw blade arbor assembly, it sits between the clamping flange and the retaining hardware, maintaining constant pressure on the blade to prevent slippage under cutting loads. Over time, repeated thermal cycling and mechanical stress can cause the spring to fatigue, flatten, or lose its load capacity, resulting in reduced clamping force, blade movement during cuts, and increased vibration. Replacing the cup spring with a genuine Wacker Neuson 5000126540 restores correct arbor preload and ensures the blade is held securely throughout the full cutting cycle.

Part Details

Compatibility & Fitment

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.