Bush Hog Spacer OEM #95285

Restore factory-correct bearing spacing, preload, and spindle assembly geometry to your Bush Hog ATH 900 finish mower with this Genuine OEM Spacer (Part #95285). Confirmed in the official Bush Hog ATH Series Parts Manual as item #6 in the 95288 Spindle Assembly for the ATH 900 model — used in a quantity of 1 per spindle — this spacer is precisely positioned within the spindle housing (#95284) between the bearing cones (#50076) and the spindle shaft (#95280) to establish and maintain the factory-correct axial spacing between bearing components throughout the service life of the assembly.

What the Spacer Does:
The spacer in the Bush Hog ATH 900 spindle assembly is a precision-dimensioned cylindrical component that establishes the correct axial distance between the inner bearing races on the spindle shaft. By controlling this spacing exactly, the spacer sets the correct bearing preload — the critical internal clamping force that keeps the tapered roller bearings properly loaded against their cups in the spindle housing. Without the correct spacer, the bearing preload cannot be properly established regardless of how the spindle nut is torqued, resulting in either excessive bearing play (under-preload) or overloaded, overheating bearings (over-preload). Either condition causes accelerated bearing failure and, ultimately, spindle assembly damage.

Why Spacer Dimensions Are Critical:
Spacers are precision components. Even a small variation in spacer height — a few thousandths of an inch — directly changes the bearing preload across the entire spindle assembly. A spacer that is too long results in insufficient preload, allowing the bearing cones to float slightly on the shaft during high-speed rotation, generating heat, noise, and rapid wear. A spacer that is too short over-preloads the bearings, causing them to run hot, consume excess torque, and fail prematurely from fatigue. The genuine Bush Hog OEM spacer is manufactured to the exact axial height required for the ATH 900 spindle assembly — ensuring correct bearing preload right out of the box without any shimming or guesswork.

Signs Your Spacer May Need Replacement:

• Spindle bearing preload cannot be correctly established during rebuild — incorrect spacer height
• Spindle running hot during operation despite fresh bearings and correct lubrication
• Visible wear, corrosion, deformation, or crushing of the spacer from a catastrophic bearing failure
• Spindle assembly being rebuilt after bearing collapse — always inspect and replace the spacer
• Spacer damaged or lost during spindle disassembly

Key Features:

• Genuine Bush Hog OEM part — not aftermarket or generic
• Factory-confirmed for the Bush Hog 95288 Spindle Assembly on the ATH 900 model — quantity 1 required per spindle
• Precision-dimensioned to factory-correct axial height for proper bearing preload in the ATH 900 spindle
• Works in conjunction with bearing cones (#50076), bearing cups (#14-6-197), grease seals (#95281), spindle shaft (#95280), and spindle housing (#95284)
• Hardened steel construction to resist deformation under continuous bearing preload forces
• Direct OEM replacement — correct dimensions guaranteed for factory-specification bearing preload

Companion Parts for Complete ATH 900 Spindle Assembly Service:

• Bearing Cup: #14-6-197 (qty: 2)
• Bearing Cone: #50076 (qty: 2)
• Blade Mount Weldment: #95287
• Grease Seals: #95281 (qty: 2)
• Spindle Shaft: #95280
• Spindle Housing: #95284
• Grease Fitting: #150002
• Retaining Rings: #90717 (qty: 2)

Compatibility:
This spacer is confirmed for the Bush Hog 95288 Spindle Assembly used on the ATH 900 model. Always confirm fitment using your Bush Hog model and serial number — found on the equipment identification plate — and cross-reference against your unit’s parts manual before ordering to verify the correct spacer specification for your specific spindle assembly.

Part Details:

• Part Number: 95285
• OEM Brand: Bush Hog
• Part Type: Spacer (Bearing Spacer)
• Quantity Per Spindle Assembly: 1
• Application: Bush Hog ATH 900 — 95288 Spindle Assembly
• Material: Hardened Steel
• Condition: New / Genuine OEM