Full definition
Terms for a sprocket — the toothed wheel that engages a roller chain for power transmission. "Pinon" (piñon, literally "pine nut" — from the tooth shape resemblance) is the universal Spanish technical term understood across all of Latin America and Spain. In Mexico specifically: "catarina" is the colloquial term widely used in workshops and factories — "catarina de cadena" (chain sprocket), "catarina para cadena #40" (sprocket for #40 chain). The origin of "catarina" in this context is debated but is uniquely Mexican. In technical documentation: "piñon" or "rueda dentada para cadena" is standard. For chain drive specifications: the sprocket is identified by: number of teeth (Z), chain pitch (ANSI #25-#240 or ISO 04B-72B), bore diameter, hub type (A, B, or C), and finish (plain bore, keyway, taper-lock, QD). Material: AISI 1045 steel with induction-hardened teeth (50-55 HRC) is standard. For B2B SEO targeting Mexico: include both "catarina" and "piñon" — Mexican maintenance workers searching for replacement sprockets commonly use "catarina" while engineers and purchasing agents may search for "piñon." Both lead to the same product.