EV Suppliers

A custom gear job shop in the Chicago area specializing in emergency breakdown replacements and prototypes. Circle Gear & Machine produces one-off and small batch spur, helical, worm and bevel gears up to 48” in diameter, serving steel mills, racing teams, and industrial users since 1951. The company is known for rapid turnaround (“Rush Gear” service) and comprehensive in-house machining (including shaping, hobbing, CNC milling, and grinding). ISO 9001-certified, Circle Gear tackles complex reverse-engineering of obsolete or high-performance gears with craftsmanship and speed.

Long-established gear manufacturer (since 1920) specializing in large custom gearing for industrial and vintage automotive restoration. Franklin Machine & Gear produces spur, helical, bevel gears and sprockets – from a few inches up to 6 feet in diameter – often as one-off or small batch orders. With in-house engineering, welding, and heat treat partners, Franklin can reverse-engineer old gears or create new ones from drawings. Markets range from antique car gearsets to crane and press gears. The company employs an ISO-compliant quality system and prides itself on tackling difficult, oversized gear projects others avoid.