KOOTANS mower deck spindle assembly for 48"–61" decks — fits Scag & Ferris, 7" height, 4.5" mounting

KOOTANS replacement spindle assembly delivers a ready-to-install deck spindle with tapered roller bearings and grease zerk for Scag, Ferris and many 48"–61" mower decks.

This precision-made spindle replaces worn or damaged deck spindles on a wide range of zero-turn mowers and walk-behinds. Machined from durable iron and finished with a steel grease zerk, the assembly ships with a tapered roller bearing set and fits numerous OEM part numbers including Scag 461663, 46400, 46631 and Ferris 1530301. The unit’s 7" height and 4-1/2" mounting hole spacing make it compatible with many 48", 52" and 61" decks from 1995 onward.

Which mower models and part numbers is this spindle compatible with?

This spindle is designed to match a broad list of OEM references and model types so you can replace failing spindles without modifying the deck. It fits Scag models and several turf and walk-behind series, plus select Ferris and aftermarket part equivalents.

• Compatible with Scag 48" Zero-Turn models and versions listed in product fit notes.
• Fits Ferris OEM 1530301 and Oregon part 82-325 equivalents.
• Accepts many aftermarket cross-reference numbers such as Encore, Prime Line, Rotary, Raisman and Sunbelt entries.

What hardware and measurements are included with the spindle?

The package contains everything needed to mount the spindle aside from the pulley and blade. Key dimensions are provided so you can confirm fitment before installation.

• Included: 1 spindle assembly, 1 grease zerk, 1 set of taper roller bearings.
• Overall height: 7" (180 mm); mounting hole center-to-center: 4-1/2" (114 mm).
• Threaded fittings are CNC-machined for clean engagement with deck bolts and nuts.

How does the build quality protect the deck and bearings?

The spindle uses a robust construction and improved sealing to extend service life under normal mowing conditions. Materials and machining practices are chosen for dimensional accuracy and corrosion resistance at wear points.

• Main body cast from quality iron for strength and heat resistance.
• Steel grease zerk for reliable lubrication access and rust resistance.
• New tapered roller bearings with enhanced seal design to reduce contamination and retain grease.

Can I install this spindle myself and what should I check during replacement?

Experienced DIYers and many professional technicians can swap this spindle in a typical deck rebuild. Follow standard safety and torque procedures when removing blades, pulleys and old spindle hardware.

• Verify mounting hole spacing (4-1/2") and overall height (7") before purchase.
• Inspect deck flange surfaces and pulley alignment when fitting the new spindle.
• Use recommended torque specifications for mounting bolts and re-grease after initial run-in.

Who is this for: This KOOTANS spindle assembly is intended for owners, lawncare professionals and repair shops replacing worn spindle units on Scag, Ferris and compatible decks sized 48", 52" or 61". It suits customers who need a direct-fit aftermarket replacement that includes bearings and a grease zerk, and who want CNC-machined threads and improved bearing sealing for reliable deck performance.