Jaw Plate
C100
PITMAN, ASSY PN#910557
If you’re running a Metso Nordberg C100, you already know it’s one of the most reliable jaw crushers in the industry. But even the best-engineered machines have a "command center"—a single component that bears the brunt of every ton of rock processed. In the C100, that is the Pitman Assembly (Part No. 910557)1.
The pitman assembly is crucial for the crushing action in a Metso Nordberg C100 jaw crusher. It is the moving part driven by an eccentric shaft2, responsible for squeezing rock against the fixed jaw die, ensuring efficient crushing performance.
The pitman assembly is a colossal piece of cast steel weighing approximately 5,668 kg. It undergoes millions of cycles of pressure, making it essential for maintaining productivity. Understanding its importance can prevent production standstills.
What is the Pitman Assembly (PN 910557)?
In simple terms, the pitman is the massive, moving part that defines the crushing action. While the frame of the crusher remains stationary, the pitman moves back and forth, driven by an eccentric shaft2.
The pitman assembly in the Nordberg C100 is designed to withstand extreme pressure cycles due to its high-quality cast steel construction3. It actively squeezes rock against the fixed jaw die, ensuring successful fracture.
Let's dive deeper into understanding the pitman assembly. It operates similarly to a human jaw, applying pressure to fracture the rock. This movement ensures efficient crushing, making it a critical component in the Nordberg C100 jaw crusher.
Pitman Assembly Breakdown
| Component | Function |
|---|---|
| Pitman Body | Supports movement, defines crushing action |
| Eccentric Shaft | Drives pitman movement |
| Bearings | Allow smooth movement, reduce friction |
| Toggle Plate | Connects pitman, ensures proper seating |
The pitman assembly relies heavily on its components. The eccentric shaft2 and bearings facilitate movement, while the toggle plate4 ensures a secure connection, preventing damage.
Why This Specific Component Fails?
Because the pitman is the primary moving part, it is subject to immense fatigue. If you are a maintenance manager, these are the three areas where the PN 910557 usually runs into trouble:
Pitman assembly failures often result from bearing housing wear5, fatigue cracking6, and seat damage. Proper maintenance and timely inspections are crucial to prevent these issues.
Delving into the failure causes, bearing housing wear5 occurs when dust bypasses seals, generating heat and potential shaft seizure. Fatigue cracking develops over time, requiring regular non-destructive testing7. Seat damage stems from improper toggle seating, leading to wear and potential damage.
Potential Failures Breakdown
| Failure Type | Cause |
|---|---|
| Bearing Housing Wear | Dust bypass, heat generation |
| Fatigue Cracking | Stress from hard ores, microscopic cracks |
| Seat Damage | Improper toggle seating, wear |
Understanding these failure causes allows for targeted maintenance, preventing unscheduled shutdowns and extending pitman assembly life.
Maintenance Tips: Keeping PN 910557 in the Game?
You don't want to replace a pitman assembly often—it’s a massive capital expense. To extend the life of your PN 910557, keep these three tips in your shift-lead’s playbook:
Regular lubrication, CSS monitoring8, and toggle area inspections9 can significantly extend the pitman assembly's lifespan. These practices minimize wear and ensure optimal performance.
Exploring maintenance strategies, proper lubrication cycles ensure bearing longevity. Monitoring CSS prevents undue stress, while toggle area inspections9 catch uneven wear early, preventing major damage.
Maintenance Strategies
| Strategy | Benefit |
|---|---|
| Lubrication Cycles | Extends bearing lifespan |
| CSS Monitoring | Prevents stress, optimizes performance |
| Toggle Area Inspection | Early wear detection |
Implementing these strategies maintains pitman assembly performance, reducing downtime and capital expenses.
Final Thoughts
The Pitman Assembly (PN 910557) isn't just a part; it’s the engine of your crushing operation. Understanding its role and its vulnerabilities is the difference between a high-production season and an expensive, unscheduled shutdown.
Looking for a replacement Pitman or the associated bearings for your C100? Always ensure you have your serial number ready10 (like the s/n 15147 often seen with this PN) to ensure a perfect fit for your eccentric shaft2 and toggle arrangement.
Would you like me to provide the specific torque settings for the pitman's toggle seat bolts next?
Understanding the Pitman Assembly's role is crucial for maintaining the efficiency and longevity of your Metso Nordberg C100 jaw crusher. ↩
Learn how the eccentric shaft is vital for the movement of the pitman, ensuring effective rock crushing in jaw crushers. ↩
Discover the benefits of using high-quality cast steel in Pitman Assemblies for durability and performance under extreme pressure. ↩
Learn about the toggle plate's function in ensuring proper seating and preventing damage in jaw crushers. ↩
Explore the common causes of bearing housing wear to prevent potential failures and maintain crusher efficiency. ↩
Understand the impact of fatigue cracking on crusher components to implement preventive maintenance strategies. ↩
Explore how non-destructive testing helps in identifying potential issues in crusher components without causing damage. ↩
Find out how CSS monitoring can prevent stress and optimize the performance of jaw crushers. ↩
Discover how regular toggle area inspections can detect early wear and prevent major damage in jaw crushers. ↩
Ensure a perfect fit for replacement parts by understanding the importance of having the serial number ready when ordering. ↩
