804581.1 Heavy-Duty Baler Plunger Roller Bearing ── 20mm x 52mm x 22mm (0.787" Bore) | High-Impact Sealed Piston Guide & Compaction Unit | Fits Claas 0008045811 / 804581.1 Square Balers & Agricultural Machinery

✦ Technical Specifications & OEM Matrix

Bearing Part Number: 804581.1 / 0008045811 (Plunger Mechanism Roller Bearing)

Precise Physical Dimensions:

Inner Diameter (Bore - d): 20 mm (0.787 in)

Outer Diameter (OD - D): 52 mm (2.047 in)

Overall Width / Thickness (B): 22 mm (0.866 in)

OEM Equipment Replacements:

Claas OEM: 0008045811, 804581.1, 804581

⚡ Structural Advantages & Heavy-Duty Performance

Heavy Thick-Walled Outer Ring Design: Specially heat-treated and hardened cylindrical outer ring designed to withstand continuous high-frequency impacts against baler plunger rails without surface deformation.

Optimized Load Distribution (22mm Width): 22mm overall width distributes extreme compaction forces evenly across the roller guide track, significantly reducing rail gouging and wear.

Heavy-Duty Straw & Dust Sealing System: High-efficiency contact rubber seals create a permanent barrier against dry crop dust, straw particles, damp field slurry, and abrasive grit contamination.

Maintenance-Free Synthetic Pre-Lubrication: Factory pre-filled with wide-temperature agricultural synthetic grease, eliminating daily greasing downtime and preventing lubricant washout under harsh weather.

🚜 Agricultural Machinery Deployment & Usage Scenarios

Claas Square Balers & Agricultural Machinery: Direct fit replacement plunger guide roller for Claas square balers and forage harvesting machinery requiring a 20x52x22mm roller bearing.

Plunger & Piston Mechanism Assemblies: Essential roller bearing component for agricultural baler piston rails, plunger arms, and bale chamber compaction mechanisms operating under high-cycle loads.

Severe-Duty Harvesting Equipment: Designed for demanding agricultural hay and forage equipment subjected to continuous reciprocating shock loads and extremely dusty field conditions.