S-5909K977 4.125" ID x 5 1/16" OD Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Precision dimensional control ensures perfect fit and alignment for 4 1/8" shafts, reducing assembly time and preventing equipment misalignment
• High-strength steel construction provides exceptional durability and load distribution in demanding mechanical applications
• Tight tolerance specifications (ID: 0.002"-0.017", OD: -0.03" to -0.01") guarantee consistent performance and interchangeability
• RoHS 3 and REACH compliance meets international environmental standards for safe use across global markets
• Optimized 0.03125" thickness maintains structural integrity while minimizing space requirements in compact assemblies
• Standard inch measurements ensure compatibility with existing North American machinery and replacement part inventories
• Rigorous quality control delivers reliable performance in high-vibration and heavy-load industrial environments

Professional Applications & Engineering Value

This precision steel washer addresses critical engineering challenges in industrial machinery maintenance and assembly. The carefully controlled 4.125" ID with its tight tolerance range prevents shaft play and bearing misalignment, eliminating premature wear in rotating equipment. Manufactured from high-grade steel, this washer provides superior load distribution for 4 1/8" shaft applications in pumps, motors, and gearboxes. The exacting OD tolerance of -0.03" to -0.01" ensures proper seating in housing bores while the consistent 0.03125" thickness maintains precise axial spacing. These industrial washers solve vibration-induced loosening and component fatigue in heavy-duty mechanical systems, extending equipment service life while meeting stringent environmental compliance requirements.

Specification Summary & Compliance

This precision washer features inch system measurements with ID: 4.125" (tolerance: 0.002" to 0.017"), OD: 5 1/16" (tolerance: -0.03" to -0.01"), and Thickness: 0.03125" (tolerance: -0.00125" to 0.00075"). Designed specifically for 4 1/8" shaft diameter applications, the product maintains dimensional accuracy suitable for Class 2A fit applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring global regulatory compliance for industrial components.