The High Strength JCB JS140 Excavator Chain Sprocket (also known as drive sprocket or track sprocket) is a precision-engineered power transmission component designed specifically for JCB JS140 series 14-ton class tracked excavators. As the critical drive element of the undercarriage system, the sprocket engages directly with the track chain bushings to transfer torque from the final drive travel motor, propelling the excavator forward and backward across construction sites, mining operations, and heavy earthmoving projects.

Manufactured from high-grade 45Mn alloy steel through precision casting and CNC machining processes, this sprocket delivers exceptional structural integrity and impact resistance. The sprocket teeth undergo full-surface induction hardening and heat treatment, achieving a surface hardness of HRC 52-58 with a deep, uniform hardened layer that ensures long-lasting engagement with the track chain under heavy load conditions and provides wear resistance that maximizes service life. The core maintains internal ductility to withstand heavy shock loads without cracking.

Engineered for the JCB JS140 series—featuring a 14.61-ton operating weight, Cummins 4BT engine producing 75 kW (approximately 92 HP), and a 500mm track width—this sprocket guarantees OEM-spec fitment and dependable performance. The precision-machined tooth profile ensures accurate engagement with the track chain, helping reduce premature wear while extending the service life of key undercarriage components. Available with a smooth finish and corrosion-resistant coating in yellow, black, or customized colors