Forged Pinion Shafts for Cement Mills & Grinding Mills

The Critical Link for Your Girth Gear Drive System

In the relentless environment of a cement or grinding mill, the pinion shaft is subjected to immense torque, extreme contact stress, and abrasive dust. It is the single most critical component transmitting power to the mill's girth gear. A failure here is not just a part replacement—it's a catastrophic shutdown that costs millions in lost production.

Yile Machinery specializes in manufacturing ultra-reliable, forged pinion shafts for heavy-duty rotary mills and kilns. We engineer and produce these critical components to exceed OEM specifications, ensuring maximum service life and protecting your most valuable assets from unexpected downtime.

Key Features & Benefits:

• Superior Material Strength through Forging: We start with high-grade alloy steel billets (such as EN24, 42CrMo, 34CrNiMo6) and forge them to shape. This process creates a continuous grain flow and refined microstructure, resulting in a pinion shaft with exceptional toughness and resistance to fatigue failure.

• Precision Helical Gear Machining: Using advanced 5-axis CNC gear hobbing and grinding, we produce a perfect helical gear profile. This precision ensures smooth, full-contact meshing with the girth gear, minimizing wear, reducing noise, and maximizing power transmission efficiency.

• Advanced Surface Hardening: The gear teeth undergo a specialized induction hardening or carburizing and quenching process. This creates an extremely hard (HRC 55-60) and wear-resistant surface, while the shaft core remains ductile to absorb shock loads without fracturing.

• Complete "Drop-In" Solution: We deliver fully finished pinion shafts, complete with precision-ground bearing journals and integrated couplings, ready for immediate installation.

• Reverse Engineering Expertise: No drawing? No problem. We can accurately reverse-engineer your worn or failed pinion shaft to produce a brand-new, dimensionally perfect replacement.

Your Partner in Mill Drivetrain Reliability

We are the trusted source for MRO teams and OEMs in the cement, mining, and power generation industries. When you cannot afford failure, you can depend on our components.

Core Applications:

• Cement Mill & Raw Mill Pinions

• Ball Mill & SAG Mill Pinions

• Rotary Kiln & Dryer Drive Pinions

• Any Large Girth Gear Drive System

Protect your production schedule and extend the life of your drivetrain. Partner with Yile Machinery for a pinion shaft built for durability.