The Best Investment for Your Brown & Sharpe Ultramatic: Logan Clutches

If you rely on Brown & Sharpe Ultramatic screw machines, you may have encountered the frustrating inefficiencies caused by electromagnetic clutches. While these clutches automate precision machining, they come with a major drawback—residual magnetism, which leads to sticking, increased maintenance, and reduced machine efficiency.

At Logan Clutch, we provide a better alternative: our pneumatic multiple disc wet clutches. These innovative clutches eliminate electromagnetic issues, improve tool feed rates, and allow for more aggressive cycle times—helping you maximize your Ultramatic machine’s productivity.

Why Electromagnetic Clutches Are Holding You Back

Electromagnetic clutches use a magnetic field to engage clutch plates. Over time, residual magnetism builds up in the armature plates and disc packs, preventing full disengagement when the clutch is de-energized.

What’s the impact?

🔥 Increased Heat Generation – Sticking causes unwanted friction, overheating, and potential damage to your clutch.
⚙️ Premature Wear & Tear – Constant friction wears out friction materials, shortening the clutch’s lifespan.
🎯 Loss of Precision – If your clutch fails to disengage, your Ultramatic machine loses accuracy, affecting part quality.
💸 Higher Maintenance Costs – More frequent adjustments and part replacements drive up operational costs.

The Logan Clutch Solution: Pneumatic Multiple Disc Wet Clutches

We’ve designed a drop-in replacement for outdated electromagnetic clutches: Logan’s Pneumatic Multiple Disc Wet Clutch. By replacing electromagnetic actuation with pneumatic engagement, we eliminate residual magnetism issues, making your machine faster, more reliable, and lower maintenance.

Key Benefits:

• Smooth, Rapid Engagement & Disengagement – Our air-actuated clutches offer precise and consistent performance with every cycle.
• No More Residual Magnetism – Eliminating electromagnetic reliance means no sticking, no unwanted drag, and longer clutch life.
• Longer Service Life – Our oil-cooled and lubricated wet disc design reduces friction and heat, leading to lower wear rates and fewer breakdowns.
• Increased Precision & Control – Pneumatic actuation allows better control over machining operations, enhancing part quality and repeatability.

Boost Cycle Times with the 4-Speed Spindle Drive Retrokit™

For manufacturers pushing their Ultramatic machines to higher performance levels, our 4-Speed Spindle Drive Retrokit™ is a game-changer. This upgrade enables:

Faster Tool Feed Rates – Achieve higher efficiency across multiple speed ranges.

More Aggressive Cycle Times – Reduce machining time while maintaining precision and reliability.

Extended Tool Life – Minimize tool wear and lower tooling costs.

Customer Success Story:

"We’ve been using Logan Clutches in my Ultramatics, and they haven’t missed a beat. I can reliably change spindle speeds and run more aggressive cycle times—without the hassle, downtime, and expense of the old electromagnetic clutches. Each time a magnetic clutch fails, I replace it with a Logan Clutch!"
– Clippard Industries

Easy Installation & Seamless Integration

Upgrading your Ultramatic machines with Logan Clutches is straightforward. Our pneumatic clutches mount easily using existing interfaces, minimizing downtime and setup headaches.

Each Logan Spindle Drive Retrokit™ includes:

✅ Clutches
✅ Drive Cups & Sprockets
✅ Electrical & Pneumatic Startup Kit
✅ Detailed Installation Schematics

Whether installed in your factory or on-site, our Retrokit ensures a hassle-free transition to a more efficient, high-performing machine.

Take the Next Step – Upgrade Your Ultramatic Machines Today

It’s time to stop dealing with outdated electromagnetic clutch issues and start boosting productivity with Logan Clutch’s pneumatic multiple disc wet clutches.

📞 Let’s Talk! Contact our team at Sales@loganclutch.com to schedule a consultation or Teams call. We’ll help you find the best solution to optimize your Ultramatic machines.