S-5909K975 3.25" ID x 4 1/8" OD Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Precision dimensional control ensures perfect fit and alignment with your 3 1/4" shafts, reducing vibration and component wear
• Superior steel construction delivers excellent load distribution and durability in demanding industrial environments
• Tight thickness tolerance (±0.00125") maintains consistent clamping force and prevents joint loosening
• Optimized OD/ID specifications provide maximum bearing surface while ensuring proper clearance for 3.25" diameter applications
• Full regulatory compliance with RoHS 3 and REACH standards meets international environmental and safety requirements
• Precision inch measurements guarantee compatibility with existing machinery and replacement part specifications
• Reliable performance in heavy-duty applications through controlled dimensional accuracy across all parameters

Professional Applications & Engineering Value

This precision steel washer addresses critical engineering challenges in industrial machinery maintenance and assembly. The tight dimensional tolerances (ID tolerance: 0.002" to 0.017", OD tolerance: -0.03" to -0.01") ensure perfect alignment with 3 1/4" shaft diameters, eliminating play that causes premature bearing failure and mechanical vibration. The 0.03125" thickness with minimal variation provides consistent preload in bolted connections, preventing joint relaxation under dynamic loads. Engineered for heavy-duty industrial applications, this washer's precise specifications make it ideal for precision equipment, conveyor systems, and rotating machinery where exact clearances are critical to operational reliability and reduced maintenance cycles.

Specification Summary & Compliance

This precision grade steel washer features exact inch-dimension specifications: 3.25" ID (tolerance: 0.002" to 0.017"), 4 1/8" OD (tolerance: -0.03" to -0.01"), and 0.03125" thickness (tolerance: -0.00125" to 0.00075"). Manufactured to precision engineering standards for optimal performance with 3 1/4" shaft diameters. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and international market acceptance for industrial applications requiring verified compliance.