Multiquip 12478 Spider Kit 4 Blade BHN/HTN

The Multiquip 12478 Spider Kit 4 Blade BHN/HTN is a genuine OEM replacement designed for JWN24HTCSL/HSCSL Whiteman ride-on power trowels. As a direct OEM part sourced through Multiquip's authorized supply chain, 12478 is manufactured to the same specifications as the original component your machine was built with. This kit is the correct service part for maintaining the blade spider assembly on the JWN24HTCSL and HSCSL trowel models, ensuring proper blade pitch control and consistent finishing performance.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original engineering tolerances for the spider assembly, ensuring correct blade articulation geometry on every stroke.
• Direct Drop-In Replacement — Mounts directly to the existing trowel arm configuration on JWN24HTCSL/HSCSL models with no adaptation needed at the spider hub connection points.
• 4-Blade Configuration — Matched specifically to the 4-blade BHN/HTN spider layout used on these Whiteman ride-on trowel models, so blade spacing and pitch linkage align correctly out of the box.
• Consistent Blade Pitch Control — A properly functioning spider assembly allows the operator to maintain even blade angle across all four blades, producing a uniform concrete finish. A worn spider introduces uneven pitch and surface defects.
• Fits JWN24HTCSL/HSCSL — Confirmed fitment for Whiteman non-overlapping blade ride-on trowel models in the JWN series, covering both HTCSL and HSCSL configurations.

The spider kit is the central hub assembly that connects the trowel's pitch control linkage to each individual blade arm. It translates the operator's pitch input into synchronized blade angle changes across all four blades simultaneously, which is essential for controlling the finish quality and surface pressure during concrete troweling operations. When the spider assembly wears or fails, blades lose synchronized pitch response, leading to uneven finishing, increased blade wear, and loss of operator control over surface texture.

DHS Equipment is an authorized Multiquip parts dealer. If you need help confirming fitment for part number 12478 or have questions about your JWN24HTCSL or HSCSL trowel, contact our parts team directly for assistance.

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.