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Description
05480000 – Sealed Ball Bearing .50″ × 1.38″ × .438″ (Genuine OEM Ariens / Gravely Part)
The 05480000 sealed ball bearing (.50″ ID × 1.38″ OD × .438″ width) is a genuine OEM Ariens / Gravely precision bearing used extensively in mower decks, idler systems, transmissions, hydrostatic drives, and friction wheel assemblies across a wide range of residential and commercial equipment. This sealed bearing is engineered to provide smooth rotational performance, reduced friction, and long service life in high-load, continuous-duty applications.
Designed and manufactured to Ariens and Gravely factory specifications, the 05480000 bearing ensures correct fitment, reliable operation, and protection against debris, moisture, and contamination in demanding mowing and ground-engaging environments.
Key Details
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Manufacturer Part Number: 05480000
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Part Name: Sealed Ball Bearing
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Brand: Ariens / Gravely
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Inside Diameter (ID): 0.50″
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Outside Diameter (OD): 1.38″
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Width: 0.438″
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Part Type: Sealed precision ball bearing
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Function: Supports rotating components and reduces friction
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Application: Idlers, mower decks, hydro drive systems, friction wheels, transmissions
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Installation: Direct OEM replacement
Compatibility
The Ariens / Gravely 05480000 bearing is used across an extremely wide range of equipment platforms and configurations. It appears in Deck Idlers, Belt Drive Systems, Hydrostatic Drive Assemblies, Friction Wheel Drives, Transmission Supports, and Height-of-Cut mechanisms, depending on model and serial range.
Common Compatible Equipment Includes
Gravely Zero-Turn & Stand-On Models
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Pro-Turn (148, 152, 160, 252, 260, 272, 452, 460, 472)
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Pro-Turn Z, Z HD, ZTX, ZTXL
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Pro-Stance 36, 48, 52, 60, and 61 (CARB, EFI, LP variants)
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Rapid XZ series
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PM Series (PM144, PM148, PM152, PM160, PM250, PM260, PM272)
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Compact-Pro series
Gravely Walk-Behind & Commercial Units
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WAW 34 series (multiple engine configurations)
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Pro Gear walk-behind models
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LM21, PRO21, XD21, and self-propelled mower platforms
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Power Brush 28 and attachment-driven equipment
Ariens Commercial & Residential Equipment
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Zero-turn mower decks (44″, 48″, 52″, 60″, 72″)
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Idler arm and belt tension systems
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Hydrostatic pump and idler assemblies
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Friction wheel drive systems
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Height-of-cut adjusters and transmission supports
This bearing is used across multiple serial number ranges, including early, mid, and late production units, supporting belt-driven idler systems, hydro drive assemblies, mower deck components, and transmission-related applications.
Why Use Genuine OEM 05480000
Using the OEM 05480000 sealed bearing ensures:
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Correct shaft fit and alignment
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Smooth, low-friction rotational performance
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Protection from dirt, moisture, and debris
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Reduced belt wear, vibration, and component stress
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Long-term durability under continuous load
This bearing delivers OEM-level reliability, fit, and performance, making it the correct replacement choice for Ariens and Gravely mower decks, idlers, drive systems, and transmission assemblies.


