8TEN Deck Spindle for Exmark Radius E & S-Series 44-60" Decks — Direct-Fit OEM 126-4630 Replacement, 6.709" Height

8TEN Deck Spindle replaces Exmark part 126-4630 to restore reliable blade mounting and smooth deck rotation on 44–60-inch Radius E and S-Series mowers.

If your Exmark Radius mower shows vibration, uneven cutting, or noisy deck operation, the spindle is a common wear item that can fix those problems. This 8TEN replacement spindle fits a wide range of Exmark Radius E and S-Series models from 2017–2025 and supports 44, 48, 52, and 60-inch decks. It’s made to match the OEM mounting pattern and dimensions so you can reinstall blades and deck components without modification.

Which Exmark models and part numbers will this fit?

This spindle is designed as a direct-fit replacement for Exmark OEM 126-4630 and is compatible across many Radius E and S Series machine codes from 2017 to 2025. Confirm your deck width and model series to ensure compatibility before ordering.

• Compatible with Exmark OEM part 126-4630.
• Fits Radius E-Series models including RAE702GEM44300, RAE708GEM44300, RAE708GEM48300, RAE708GEM52300, RAE708GEM60300, RAE720CKC48300.
• Also fits RAE720CKC52300, RAE740CKC60300, RZE708GEM52300, RZE708GEM60300, RZE724GKC52300, RZE724GKC60300.
• Works with Radius S-Series model codes such as RAS651GKA483A3, RAS691GKA523A3, RAS708GEM483C3 and others listed for 48–60" decks.

How does this spindle match the original equipment?

The replacement spindle reproduces the OEM blade-mounting pattern and critical dimensions so blades, pulleys, and deck hardware align correctly. The unit uses a hexagon/circle blade mounting pattern and measures approximately 6.709 inches in overall height to match factory geometry. Using a matched spindle reduces wobble and helps maintain consistent cutting height across the deck.

• Blade mounting pattern: hexagon/circle for direct blade bolt fitment.
• Height: 6.709 inches to preserve deck geometry and belt alignment.
• Precision-machined mounting surfaces for reliable reinstallation.
• Built to fit 44, 48, 52 and 60-inch deck configurations without modification.

What performance benefits should I expect after installing it?

Replacing a worn spindle restores smoother rotation and reduces vibration that causes uneven cuts or accelerated blade wear. You should notice improved blade tracking and quieter deck operation when the spindle and bearing interface are renewed. Proper installation also helps protect belts and pulleys from premature damage.

• Reduced deck vibration and blade wobble for cleaner cuts.
• Improved pulley and belt alignment to extend component life.
• Quieter operation with properly seated bearings and shaft.
• Maintains original cutting height and blade positioning.

What should I check before replacing the spindle?

Verify the model and deck size, inspect current spindle bearings and mounting hardware for damage, and have correct tools and torque values before starting. If blades show uneven wear or the deck emits grinding or rumbling noises, the spindle bearings may be failing. Keep original fasteners or source OEM-grade hardware for reassembly.

• Confirm Exmark model code and deck width (44–60" supported).
• Inspect blades, pulleys, belts, and spindle housing for wear.
• Gather replacement hardware and torque specs per Exmark manual.
• Consider replacing blades and belts at the same time for best results.

Who is this for: Lawn care professionals and homeowners who maintain Exmark Radius E or S-Series zero-turn mowers and need a dependable OEM-compatible spindle replacement. If you service multiple machines or prefer swapping worn deck components with like-for-like parts, this 8TEN spindle offers the fit and dimensions required to restore deck performance on 44, 48, 52, and 60-inch Exmark decks built between 2017 and 2025.