Model: For ANSI #40 / DIN(ISO)08A chain Size: 12 mm bore clamping pinion with 14 teeth, 12.7 mm (1/2 inch) pitch, 63 mm outer diameter The tension pinion is a flat pinion with a precision bearing (6201Z) that allows the pinion to rotate freely. Tension pinions are usually mounted in a fixed position on a fixed shaft. Material and treatment: Made from high quality #45 steel that undergoes a hardening process to harden the teeth. This increases durability and reduces friction, resulting in a sprocket with high hardness, excellent wear resistance and long service life. Performance and compatibility: The tensioning pinion should not rotate at a higher speed than is permitted for drive pinions of the same size. Each roller chain tension pinion has strong teeth that can hook into the chain. It is recommended that tension pinions have at least three teeth in engagement with the chain. Use scenarios: - Conveyor systems and material handling lines that use ANSI #40 / DIN 08A chain and require reliable tensioning for smooth operation. - Fixed-shaft drive assemblies in packaging lines or other machinery where stable pinion position ensures consistent chain tension. - Small to medium roller chain drives in workshops, agricultural equipment, or light industrial setups where space is limited and a durable, hardening pinion is beneficial.