S-5909K984 3.25" ID x 4 1/8" OD Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Superior load distribution with a large 4 1/8" OD, protecting mating surfaces from damage and extending equipment life.
• Precision fit for 3 1/4" shafts ensured by controlled ID tolerance, minimizing vibration and preventing component loosening.
• Consistent performance guaranteed by tight thickness and OD tolerances, providing reliable spacing and alignment in assemblies.
• Exceptional durability from the high-strength steel construction, resisting deformation under heavy-duty industrial loads.
• Global compliance assurance with RoHS 3 and REACH certifications, meeting stringent international environmental and safety regulations.
• Versatile industrial application as a robust shim or mechanical washer in demanding machinery and equipment.

Professional Applications & Engineering Value

This precision steel washer is engineered to solve critical challenges in heavy machinery and industrial equipment. Its high-tolerance design, with an ID precisely controlled for a 3 1/4" shaft diameter, eliminates play and ensures a secure fit, directly addressing issues of misalignment and fretting corrosion. The robust steel material provides the necessary strength to handle significant axial loads and shock, preventing bolt loosening and maintaining clamp load integrity in vibrating environments. As a heavy-duty industrial washer, it serves as an essential component in power transmission systems, agricultural machinery, and large-scale manufacturing equipment, where reliability and dimensional accuracy are non-negotiable for operational safety and reduced maintenance downtime.

Specification Summary & Compliance

This washer conforms to inch system specifications with an ID of 3.25" (tolerance: +0.002" to +0.017"), OD of 4 1/8" (tolerance: -0.03" to -0.01"), and Thickness of 0.125" (tolerance: -0.002" to +0.001"). It is manufactured for a nominal shaft diameter of 3 1/4". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in global markets.