The Cincinnati Milacron CT 110-7 is a classic hydraulic injection molding machine manufactured in 1996. Known for its durability, precision, and reliability, this machine has been a workhorse in the plastics manufacturing industry for decades. Whether you’re a machine operator, a plant manager, or a used equipment buyer, understanding the features, specifications, and maintenance requirements of the CT 110-7 can help you maximize its performance.
In this blog post, we’ll dive deep into:
- The history and significance of Cincinnati Milacron
- Key specifications of the CT 110-7 model
- Advantages of using this machine
- Common maintenance and troubleshooting tips
- Where to find parts and support today
By the end, you’ll have a thorough understanding of why the CT 110-7 remains a trusted machine in injection molding operations.
A Brief History of Cincinnati Milacron
Before diving into the CT 110-7, it’s essential to understand the legacy of Cincinnati Milacron, one of the most respected names in industrial machinery.
- Founded in 1884, Cincinnati Milacron was a pioneer in machine tool manufacturing before expanding into plastics machinery.
- The company was a leader in hydraulic injection molding machines, setting industry standards for performance and innovation.
- In 1998, the plastics machinery division was sold to Uniloy Milacron, which later became part of Milacron LLC.
- Today, Milacron’s legacy continues under Hillenbrand Inc., but many older models like the CT 110-7 remain in operation worldwide.
The 1996 CT 110-7 was built during a time when hydraulic machines dominated the market before electric models gained prominence. Despite newer technologies, many manufacturers still prefer hydraulic machines like the CT 110-7 for their robustness and cost-effectiveness.
Key Specifications of the Cincinnati Milacron CT 110-7 (1996)
The CT 110-7 is a 110-ton hydraulic injection molding machine designed for medium-sized molding applications. Below are its critical specifications:
1. Clamping System
- Clamping Force: 110 U.S. tons (approximately 100 metric tons)
- Tie Bar Spacing: Typically around 19.7″ x 19.7″ (500mm x 500mm)
- Mold Height Range: Adjustable, usually between 6″ to 24″ (150mm to 600mm)
- Platen Size: Varies, but often around 27.5″ x 27.5″ (700mm x 700mm)
2. Injection Unit
- Screw Diameter: ~1.8″ to 2.5″ (45mm to 65mm, depending on configuration)
- Injection Pressure: Up to 20,000 psi (1,380 bar)
- Shot Capacity: Approximately 8 to 16 oz (230 to 450 grams) depending on material
- Recovery Rate: Varies by screw design but typically 10-20 lbs/hour
3. Hydraulic System
- Pump Type: Variable displacement piston pump
- Motor Power: ~15 to 20 HP (11 to 15 kW)
- Hydraulic Pressure: Up to 2,000 psi (140 bar)
4. Control System
- 1996 models likely feature a “Templifier” or early CNC controls
- Basic programming capabilities for injection speed, pressure, and cycle times
- Manual override options for adjustments
5. Materials Compatibility
- Designed for thermoplastics such as:
- Polyethylene (PE)
- Polypropylene (PP)
- ABS
- Polystyrene (PS)
- Nylon
- Can also process some engineering resins with proper screw/barrel configuration
Advantages of the CT 110-7 Cincinnati Milacron
Why do manufacturers still rely on the CT 110-7 even after nearly three decades? Here are some key benefits:
1. Durability & Longevity
- Built with heavy-duty steel frames and high-quality hydraulic components.
- Many machines from the 1990s are still operational with proper maintenance.
2. Cost-Effective Operation
- Hydraulic machines like the CT 110-7 are cheaper to maintain than electric models.
- Replacement parts are often more affordable compared to newer CNC-electric machines.
3. Flexibility in Molding Applications
- Suitable for small to medium-sized parts (e.g., automotive components, consumer goods, medical devices).
- Adjustable parameters allow for different resins and mold configurations.
4. Simple Maintenance & Repairs
- Hydraulic systems are easier to troubleshoot than complex servo-electric systems.
- Many technicians are familiar with older Milacron models, making repairs straightforward.
Common Maintenance & Troubleshooting Tips
To keep a 1996 CT 110-7 running smoothly, regular maintenance is crucial. Here are some key areas to monitor:
1. Hydraulic System Maintenance
- Check hydraulic oil regularly (contamination can damage pumps).
- Replace filters every 6-12 months.
- Inspect hoses and seals for leaks.
2. Clamping Unit Inspection
- Lubricate tie bars to prevent sticking.
- Check mold alignment to avoid uneven wear.
3. Injection Unit Care
- Clean the screw and barrel to prevent material buildup.
- Monitor screw wear—excessive wear reduces efficiency.
4. Electrical & Control System Checks
- Inspect wiring for fraying or corrosion (older machines may have aging components).
- Backup control parameters in case of system failure.
5. Common Issues & Fixes
| Problem | Possible Cause | Solution |
|---|---|---|
| Low injection pressure | Worn hydraulic pump | Check pump, replace if needed |
| Mold not clamping | Low hydraulic fluid | Top up oil, check for leaks |
| Overheating | Clogged cooler or dirty oil | Clean cooler, replace oil |
| Electrical faults | Old relays or wiring | Inspect control panel, replace faulty parts |
Finding Parts & Support for the CT 110-7 in 2024
Since the CT 110-7 is nearly 30 years old, finding replacement parts can be challenging but not impossible. Here are some options:
1. Used Parts Suppliers
- Companies like Plastics Machinery Group, Kingsbury, and Premier Equipment specialize in used Milacron parts.
- eBay and Machinery Marketplace often have listings for components like hydraulic pumps, screws, and control boards.
2. Aftermarket & Rebuilt Components
- Some manufacturers produce aftermarket hydraulic seals, valves, and screws compatible with older Milacron machines.
- Rebuilding services are available for critical parts like pumps and injection units.
3. Technical Support & Manuals
- Original manuals can sometimes be found in PDF form online.
- Milacron user forums and Facebook groups can provide troubleshooting advice.
Conclusion: Is the CT 110-7 Still a Good Investment?
The Cincinnati Milacron CT 110-7 (1996) remains a reliable, cost-effective injection molding machine for manufacturers who prioritize durability over high-speed precision. While newer electric machines offer faster cycles and energy efficiency, the CT 110-7 is an excellent choice for:
