Splined Weld-On Hub – Size Chart
Splined Weld-On Hubs provide a dependable connection between a sprocket and a splined shaft. These hubs feature internal spline teeth, machined pilots, two set screws, and a black oxide finish.
MDS of Michigan offers W, X, and XX Series splined hubs for agricultural equipment, conveyors, industrial machinery, and custom sprocket assemblies.
Use the chart below to compare bore sizes, spline teeth, pilot diameters, and SKUs. Click any bore size to view its product page.
What Are Splined Weld-On Hubs?
Splined weld-on sprocket hubs are designed to connect compatible weld-on sprockets to splined drive shafts. Unlike keyed bore hubs, splined hubs feature internal teeth that engage with corresponding shaft splines to transmit torque.
These components are commonly used in agricultural machinery, farm implements, industrial conveyors, material handling systems, and replacement sprocket assemblies.
W, X, and XX Series Splined Hubs
Understanding spline sizes: A hub labeled 1-3/8″ x 21SP has a nominal 1-3/8″ spline bore with 21 internal spline teeth. Always confirm the complete spline specifications before selecting a replacement.
Splined Weld-On Hub Size Chart
Compare available W, X, and XX Series splined weld-on hubs below. Select a bore size to view the product on MDS of Michigan.
| Series | Bore Size | Spline Teeth | Pilot Diameter | SKU |
|---|---|---|---|---|
| W | 7/8″ x 13SP | 13 | 1-5/8″ | 214135 |
| W | 1″ x 6SP | 6 | 1-5/8″ | 216065 |
| W | 1″ x 15SP | 15 | 1-5/8″ | 216155 |
| W | 1-1/8″ x 6SP | 6 | 1-5/8″ | 218065 |
| W | 1-1/4″ x 14SP | 14 | 1-5/8″ | 220145 |
| W | 1-3/8″ x 6SP | 6 | 1-5/8″ | 222065 |
| X | 1″ x 6SP | 6 | 2″ | 316065 |
| X | 1-1/4″ x 14SP | 14 | 2″ | 320145 |
| X | 1-3/8″ x 6SP | 6 | 2″ | 322065 |
| X | 1-3/8″ x 21SP | 21 | 2″ | 322215 |
| X | 1-3/4″ x 6SP | 6 | 2″ | 328065 |
| XX | 1-3/4″ x 20SP | 20 | 2″ | 428205 |
All dimensions are in inches. SP represents the number of internal spline teeth.
How to Select the Correct Splined Hub
Start by measuring the shaft diameter and counting the spline teeth. Next, verify the spline profile and dimensions to ensure proper engagement. Select the appropriate W, X, or XX Series based on the compatible weld-on sprocket and pilot diameter.
W Series hubs have a 1-5/8″ pilot diameter, while the X and XX Series hubs listed above have a 2″ pilot diameter. Confirm the sprocket opening, shaft engagement, and application requirements before installation.
Installation Tip: The machined pilot helps position the sprocket on the hub before welding. Read our Weld-On Sprocket and Hub Installation Guide for additional information.
Common Applications
Splined weld-on hubs are used in agricultural equipment, conveyors, material handling machinery, industrial drives, replacement sprocket assemblies, and custom power transmission equipment.
Shop Weld-On Sprockets
MDS of Michigan offers a wide range of weld-on sprockets and hubs for power transmission applications. Browse our available products or contact our Michigan based team for help selecting compatible components.
Need Help Finding the Right Hub?
MDS of Michigan has supplied quality mechanical, electrical, and rubber power transmission products for over 40 years. Our experienced Michigan based team is here to help you find the correct sprocket hub for your application.
