Din137 Carbon Steel Belleville Washer Conical Disc Spring Cup Washer

描述

1. Compact, High-Energy Spring Performance
   • Manufactured to DIN 137 Type A/B geometry from quenched-and-tempered carbon or alloy spring steel (65 Mn / 50CrV4), each conical disc converts minimal axial space into clamp forces of 0.4 – 4 kN at 75 % deflection, holding preload after joint relaxation, thermal cycling, or vibration.
   • ≥ 8 µm electro-zinc with trivalent passivation resists red rust for ≥ 120 h neutral-salt-spray; duplex finishes (zinc + epoxy powder) extend endurance to 1 000 h and can be tinted clear, yellow, black, olive, or any RAL/Pantone shade without altering spring rate or torque coefficient.
   • Cold-worked structure (≥ 1 000 MPa tensile) delivers repeatable load–deflection curves across −50 °C … +200 °C; shot-peen compression boosts fatigue life beyond 2 × 10⁶ cycles at 60 % deflection.
   • Polished contact bands (Ra ≤ 1.6 µm) and burr-free edges minimise friction scatter, enabling accurate torque-to-tension conversion with standard Class 8.8–12.9 fasteners.
2. Versatile, Cross-Industry Application Spectrum
   • Automotive & Mobility: Maintains tension on brake-caliper brackets, exhaust couplings, and driveline shafts exposed to heat, vibration, and splash.
   • Industrial Machinery & Automation: Compensates for bearing settle, gasket creep, and frame expansion in gearboxes, servo mounts, and robotic end-effectors.
   • Construction & Heavy Equipment: Absorbs shock loads in boom pivots, crusher housings, and rail joints, preventing bolt loosening under impact.
   • Energy, HVAC & Electronics: Provides low-profile compliance in solar-panel clamps, turbine casings, inverter busbars, and PCB retainers subjected to daily temperature swings.
3. Installer-Friendly, Time-Saving Handling
   • Drop-in replacement for flat M3–M24 washers—simply place the disc with the concave face toward the joint and torque to catalogue values; no shimming, lock nuts, or special tools required.
   • Shallow cone and low solid height fit tight stack-ups where coil springs cannot, enabling lighter assemblies and reduced envelope.
   • Oversized bore and entry chamfer speed manual or robotic insertion over painted or hot-dip-galvanised bolts; knurled or serrated variants add anti-slip bite for joints prone to micro-movement.
   • Supplied in resealable, stackable packs; laser-etched size and load markings plus optional colour-coded coatings simplify sorting, kitting, and on-site verification.
4. Proven Quality & Long-Term Durability
   • 100 % dimensional inspection confirms OD ±0.05 mm, thickness ±0.02 mm, cone angle ±0.5°, and parallelism ≤0.03 mm; Cp/Cpk ≥ 1.67 data archived under ISO 9001, IATF 16949, and EN 1090 systems.
   • Accelerated ageing—500 h cyclic humidity, 100 freeze-thaw cycles, and 1 000 h UV exposure—shows ≥ 95 % preload retention with zero coating delamination.
   • Salt-spray, vibration, and thermal-shock tests validate suitability for coastal, desert, alpine, and industrial atmospheres without supplementary lubrication or maintenance.
   • Lot-level QR codes link each washer to melt chemistry, heat-treat curve, coating batch, and load-deflection record, giving engineers full traceability and confidence for safety-critical assemblies across industries.