DIN 5406 Stainless Steel Shaft Locking Washer

描述

1. Positive Mechanical Keying & Anti-Back-Off Performance
   • Produced to DIN 5406 specifications, the washer’s precision-lasered inner tongue mates with a shaft keyway while one or two radial locking tabs engage the slots of a slotted (lock) nut, creating a rigid, metal-to-metal lock that resists untightening from torsional pulse, vibration, or thermal cycling.
   • Cold-rolled alloy or carbon steel, tempered to 200–260 HV, supplies just the right ductility for repeated bending of the lock tabs without cracking; stainless (304 / 316) and phosphated or ≥ 8 µm electro-zinc coated options offer corrosion protection from −40 °C to +400 °C.
   • In laboratory endurance tests the assembly maintains ≥ 95 % of the initial tightening torque after 1 000 000 shaft reversals at 50 Hz and survives salt-spray exposure of 120 h (zinc) or 1 000 h (duplex zinc + epoxy) without red rust.
   • Meets or exceeds the concentricity (≤ 0.05 mm TIR) and tab bend-fatigue requirements of ISO 2982-2, ensuring compatibility with high-speed bearing arrangements.
2. Broad, Cross-Industry Application Spectrum
   • Power Transmission & Gearboxes: Locks KM/KML nuts on helical, bevel, and planetary gear sets in conveyors, mixers, and winches.
   • Wind, Hydro & Thermal Turbines: Secures bearing take-up nuts on main shafts and yaw drives where inspection windows are long and reliability paramount.
   • Rail, Marine & Off-Highway Equipment: Prevents nut walk-off on axle journals, propeller shafts, and final drives subject to shock and directional change.
   • Machine Tools, Robotics & Automation: Maintains preload on precision spindle and ball-screw bearings, preserving micron-level positional accuracy during high-cycle operation.
3. Installer-Friendly, Time-Saving Handling
   • Slip the keyed washer over the shaft, tighten the slotted nut to the specified torque, then simply bend the nearest tab into an available nut slot with standard pliers—no chemical adhesive, lockwire, or special fixtures required.
   • Tabs are chamfer-edged to prevent scoring when bent and can be repositioned once for maintenance without loss of bite, reducing consumable usage.
   • Low profile (1.0–3.0 mm thickness range) keeps bearing stack heights compact, allowing drop-in replacement during retrofits without redesigning housings or covers.
   • Supplied in heat-numbered sachets or reel-on-tape strips for clean room, line-side, or automatic dispenser feeding; optional laser-etched size code speeds sorting in multi-diameter kits.
4. Verified Quality & Long-Term Durability
   • 100 % optical inspection of bore diameter, key width ± 0.02 mm, tab thickness ± 0.03 mm, and flatness ≤ 0.03 mm guarantees interchangeability; process Cp/Cpk ≥ 1.33 data archived for ISO 9001, IATF 16949, and AS 9100 audits.
   • Post-forming stress-relief temper eliminates residual stresses, safeguarding tab ductility through repeated bend cycles during service interventions.
   • Duplex-coated variants (zinc + epoxy) withstand 1 000-h xenon-arc weathering and 200 °C bake without flaking or colour shift, ideal for outdoor, offshore, or mildly chemical environments.
   • Each lot carries a QR-coded traceability chain back to melt chemistry, heat-treat batch, coating bath, and mechanical test report, delivering full transparency for aerospace, medical-device, and critical-infrastructure projects.