S-5909K81 50.05 mm ID x 70 mm OD DIN 5405-3, ISO 303 Washers for Needle-Roller Thrust Bearings

Key Features & Benefits at a Glance

• Precision Fit for 50mm Shafts – 50.05mm inner diameter with tight tolerance ensures secure, vibration-resistant mounting in industrial machinery.
• Durable Steel Construction – High-strength steel material provides excellent load distribution and long-term wear resistance under heavy-duty conditions.
• Optimized Dimensions for Stability – 70mm outer diameter and 1mm thickness offer balanced surface coverage, preventing surface damage and loosening.
• Certified to International Standards – DIN 5405-3 and ISO 303 compliance guarantees dimensional accuracy and interchangeability in global applications.
• Strict Tolerance Control – ID tolerance (0 to 0.25mm), OD tolerance (-0.3 to -0.05mm), and thickness tolerance (-0.05 to 0.05mm) ensure consistent performance in precision assemblies.
• Environmental & Regulatory Safety – RoHS 3 and REACH compliance eliminates hazardous substances, supporting sustainable and safe industrial operations.
• Versatile Industrial Use – Ideal as a shim or spacer washer, reducing friction and compensating for gaps in mechanical systems.

Professional Applications & Engineering Value

This metric steel washer is engineered to address common challenges in shaft assembly and industrial machinery, where precise alignment and durability are critical. The 50.05mm ID with controlled tolerance prevents misalignment and reduces wear on 50mm shafts, while the 70mm OD distributes clamping force evenly to avoid surface deformation. Made from robust steel, it withstands high-stress environments, making it suitable for automotive, manufacturing, and heavy equipment applications. Compliance with DIN 5405-3 and ISO 303 standards ensures reliability, and the RoHS 3 and REACH adherence supports eco-friendly operations without compromising performance.

Specification Summary & Compliance

This washer features precise dimensions: Inner Diameter 50.05mm (tolerance 0mm to 0.25mm), Outer Diameter 70mm (tolerance -0.3mm to -0.05mm), and Thickness 1mm (tolerance -0.05mm to 0.05mm), designed for 50mm shaft diameter applications. It conforms to DIN 5405-3 and ISO 303 specifications, ensuring high accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use.