Pinion Shaft

The pinion shaft is a key drivetrain component in the power end of mud pumps. It connects the motor or drive system to the internal gear assembly, transmitting rotational energy to the crankshaft to drive the pistons. The pinion shaft plays a vital role in ensuring synchronized, high-efficiency power transfer in demanding drilling conditions.

Engineered from high-strength forged alloy steel and precision-machined to tight tolerances, pinion shafts are built to handle extreme torque, vibration, and continuous rotational loads. Their surface treatments and hardened profiles provide enhanced resistance to wear and fatigue, ensuring longevity in high-duty-cycle environments.

Our pinion shafts are fully compatible with FMC BEAN, ATLAS COPCO (Trido series), and TRIAQUA mud pumps. Each shaft is manufactured to OEM specifications for flawless integration with existing gear systems and reliable long-term performance.