Spindle Assembly for Cub Cadet MTD 918-04865 918-04865A 618-04636 618-04636A 618-04865A 918-04636 918-04636A 618-04865 285-847 Rotary 13029 LTX1045 Series 46" Deck Craftsman Z530 with Bolt Zerk

What It Is

This spindle assembly is the rotating hub that drives the mower blade on Cub Cadet and MTD lawn tractors with a 46-inch deck. It’s designed for residential mowers like the LTX1045 series and Craftsman Z530 zero-turn, replacing worn-out bearings or bent spindles to restore clean cutting.

Fitment & Compatibility

Before buying, verify your mower has a 46-inch deck. This spindle fits Cub Cadet models using OEM part numbers 918-04865, 918-04865A, 618-04636, 618-04636A, 618-04865A, 918-04636, 918-04636A, and 618-04865. It also matches Craftsman Z530 and rotary mower 13029. Measure the spindle shaft diameter (typically 5/8 inch) and bolt pattern (usually 3-bolt, 2.75-inch center-to-center). Check your old spindle for a grease zerk—this one includes it. If your deck uses a different pulley or blade mounting system, confirm compatibility before purchase.

Key Things to Know

• Quality: Aftermarket replacement at a budget price. 4.6 stars from 538 reviews suggests good durability for homeowner use, but may not match OEM longevity under heavy commercial conditions.
• Installation: Moderate difficulty. Requires removing the blade, pulley, and old spindle, then bolting on the new unit. Have a torque wrench for the center bolt (typically 40-60 ft-lbs).
• Common gotcha: The included zerk fitting is for grease, but some users report it’s not pre-greased. Apply grease after install to prevent premature bearing failure.
• Fitment trick: On some LTX1045 decks, the spindle housing may be slightly taller than OEM. Check blade clearance under the deck before tightening fully.

Should You Buy It

Buy this spindle if you need a cost-effective replacement for a worn or bent spindle on a 46-inch Cub Cadet or Craftsman Z530 lawn tractor used on a residential property. It’s a solid value for the price, but if you mow commercially or want maximum durability, consider an OEM part instead.