Welger AP Square Baler Parts Piston Roller 1109170201 Plunger Bearing 62x20mm

Welger AP Square Baler Parts 1109170201 Piston Roller 

Precision OEM Replacement for Piston Roller Bearing

Direct replacement for worn parts – ensure your baler ties knots perfectly, season after season.

Design:
Engineered for optimal force distribution, the Welger Piston Roller (1109170201) features a robust cylindrical structure that minimizes friction during high-speed plunger cycles. Its geometry aligns precisely with Welger AP baler channels, reducing lateral stress and preventing premature wear. The hardened steel core and precision-ground surface ensure smooth reciprocating motion, extending component lifespan by 40% compared to generic bearings.

Seals:
Triple-layered sealing technology creates an impregnable barrier against hay dust, moisture, and abrasive debris. Tested under ISO 6194 standards, it maintains 99.3% grease retention after 500 operating hours in high-contamination environments, eliminating lubrication failures even in torrential field conditions..

Dimensions:
With exacting 62x20mm specifications (±0.01mm tolerance), this bearing integrates seamlessly into Welger AP plunger assemblies. The bore-to-outer diameter ratio maximizes load-bearing surface area while minimizing inertial mass. Laser-verified concentricity ensures under 0.005mm radial runout, critical for vibration-free operation at 120 strokes/minute.

Load capacity:
Rated for 22kN static/14kN dynamic loads (DIN ISO 76/281), the hardened GCr15 bearing steel construction withstands peak plunger impact forces during dense bale compression. Finite element analysis confirms uniform stress dispersion across all 12 rollers, enabling 24/7 operation at up to 3,500 psi without deformation – ideal for high-yield hay/silage baling.

Temperature resistance:
Performs reliably from -30°C to 120°C. High-temperature grease and tempered cage prevent binding during extended summer operation or cold starts.