Pignon en acier inoxydable #100 | Transmission extra-robuste en acier inoxydable testée aux ultrasons selon la norme ANSI 100

Why Material Integrity Testing Comes Before Machining

At the #40 or #50 pitch scale, an internal void or lamination in the stainless billet might never affect performance — the cross-sections are small enough and load paths redundant enough that a subsurface defect in an off-load zone has little practical consequence. At the #100 pitch, with 31.75 mm chain and roller loads that can exceed 20 kN per tooth in heavy-duty applications, this calculation changes fundamentally. A lamination at the tooth root cross-section can initiate fatigue cracking under cyclic load without any visible surface indication, producing sudden tooth fracture that jams a conveyor, damages downstream equipment, or — in the worst case on an overhead drive — causes an uncontrolled load drop. This is why our Pignon Ever-Power #100 en acier inoxydable production starts with billet inspection, not machine setup. Every bar over 120 mm diameter is ultrasonically tested per ASTM A388 before a single cut is taken. Only UT-cleared material progresses to the shop floor.

PMI Testing and Full Material Traceability

Positive material identification (PMI) is a rapid XRF scan that confirms the elemental composition of each billet against the declared grade. It takes under 60 seconds per piece and eliminates the risk of grade substitution — an issue more common than most buyers realise in the SS long-products market, where 304 and 316 bars look identical and the grade difference is detectable only by chemistry. Our PMI protocol tests every individual billet, not just a sample from each delivery lot. The test record, along with the mill certificate and UT clearance, is retained against the billet heat number and cross-referenced to the finished sprocket serial number on the production traveller document that ships with each order. That chain of traceability — from raw bar to boxed sprocket — is the documentation that satisfies the most stringent OEM quality audits.

Solution Annealing for Maximum Corrosion Resistance

After rough machining, the #100 SS sprocket blanks undergo solution annealing: heating to 1,050–1,100 °C followed by rapid water quench. This dissolves any chromium carbide that may have precipitated during hot-working of the original billet, producing a fully homogenous austenitic microstructure with maximum chromium in solid solution — and therefore maximum corrosion resistance throughout the cross-section. This treatment is standard on all our #100 SS sprockets and is documented on the production traveller.

Spécifications techniques

Applications Where #100 SS Is the Only Viable Answer

Composants de système d'entraînement robustes

• Chaîne à rouleaux ANSI 100 SS — 316 SS, single and duplex strand
• Chaîne SS série lourde 100H — extra-thick outer plates for shock and overload
• Douilles coniques QD de grande taille — SDS 4040–5050 series, stainless versions available
• Custom 316 SS Shafts — turned with keyways and locking collars
• Outils d'alignement de pignons — kits d'alignement laser pour un réglage précis de la ligne de chaîne

Témoignages clients

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