At JMC, continuous improvement in performance, durability, and reliability is central to our product development philosophy. As part of our commitment to supplying robust, high-quality crushing equipment to the UK and European markets, we are pleased to announce a major design upgrade across our entire jaw crusher range.
From 2026, all JMC jaw crusher models will be manufactured with a cast pitman as standard.
This enhancement represents a significant step forward in structural integrity and long-term performance for our machines, particularly in demanding recycling, quarrying, and demolition applications.
Why the Pitman Matters in Jaw Crusher Performance
The pitman is one of the most highly stressed components in a jaw crusher. It transmits the eccentric motion from the drive system to the moving jaw, operating under continuous cyclic loading, high impact forces, and vibration.
Historically, pitmen have been produced either as welded fabrications or as single-piece castings. While fabricated designs can be effective in light-duty or low-cycle applications, modern crushing demands increasingly favour cast components for long-term durability and fatigue resistance.
Key Benefits of a Cast Pitman in the JMC Jaw Crusher Range
1. Superior Fatigue Strength
A cast pitman is manufactured as a single, homogenous component with no welded joints or heat-affected zones. This significantly reduces stress concentrations and improves resistance to fatigue cracking under continuous crushing cycles.
2. Improved Structural Integrity
Casting allows smoother transitions between sections and optimised load paths, ensuring forces are distributed evenly throughout the pitman. This results in greater overall rigidity and reduced risk of structural distortion over time.
3. Increased Reliability in Heavy-Duty Applications
For operators processing hard rock, reinforced concrete, or abrasive recycled materials, a cast pitman offers enhanced impact resistance and longer service life, even under severe operating conditions.
4. Enhanced Bearing and Alignment Accuracy
Critical interfaces such as bearing housings and toggle contact points benefit from improved dimensional stability, supporting better alignment, reduced wear, and smoother machine operation.
5. Lower Lifetime Operating Costs
Although a cast pitman represents a higher manufacturing specification, it delivers tangible long-term value through:
- Reduced risk of structural failure
- Longer service intervals
- Lower maintenance and repair requirements
- Improved machine uptime
Designed for Modern Crushing Demands
This design upgrade aligns the JMC jaw crusher series with best practice seen in premium, heavy-duty crushing equipment worldwide. The move to cast pitmen supports our focus on:
- Reliability in recycling and quarry environments
- Consistent performance with hard and abrasive feed material
- Reduced whole-life cost of ownership
Standard Across the Entire JMC Jaw Crusher Series
From compact mobile units to larger static and tracked machines, every JMC jaw crusher supplied from 2026 onwards will incorporate a cast pitman as standard equipment—not an optional upgrade.
This change reflects our long-term commitment to engineering-led design and ensuring our customers receive equipment built to withstand real-world working conditions.
Looking Ahead
As material processing demands continue to increase, JMC will remain focused on strengthening core components, improving reliability, and delivering crushers that perform consistently day after day.
If you would like further technical information on the 2026 JMC jaw crusher series or advice on selecting the right machine for your application, please contact our technical team.
In Summary the benefits of a cast pitman from a welded fabrication pitman
| Attribute | Cast Pitman | Welded Fabrication Pitman |
|---|---|---|
| Material Uniformity | ✓ High | ✗ Lower |
| Fatigue Life | ✓ Superior | ✗ Reduced |
| Dimensional Accuracy | ✓ High | ✗ Variable |
| Stress Concentrations | ✓ Low | ✗ High at welds |
| Maintenance Frequency | ✓ Lower | ✗ Higher |
| Lifecycle Cost | ✓ Competitive | ✗ Often higher long-term |
