Types of Ballscrew “Rolled Ballscrew, Ground Ballscrew”

Rolled and Ground Ballscrew are two types of ballscrew technologies used for linear motion applications. Here are the key differences:

Rolled Ballscrew:

1. Manufacturing process: Rolled ballscrew is made by rolling the screw thread onto a metal shaft.
2. Accuracy: Rolled ballscrew typically has a lower accuracy (±0.005-0.010 in/ft) compared to ground ballscrew.
3.  Precision: Rolled ballscrew has a lower precision (±0.001-0.005 in/ft) due to the rolling process.
4. Cost: Rolled ballscrew is generally less expensive than ground ballscrew.
5. Lead time: Rolled ballscrew typically has a shorter lead time (1-4 weeks) compared to ground ballscrew.

Ground Ballscrew:

1. Manufacturing process: Ground ballscrew is made by grinding the screw thread onto a metal shaft.
2. Accuracy: Ground ballscrew typically has a higher accuracy (±0.001-0.005 in/ft) compared to rolled ballscrew.
3. Precision: Ground ballscrew has a higher precision (±0.0005-0.002 in/ft) due to the grinding process.
4.  Cost: Ground ballscrew is generally more expensive than rolled ballscrew.
5. Lead time: Ground ballscrew typically has a longer lead time (4-12 weeks) compared to rolled ballscrew.

Key differences:

1.  Accuracy and precision: Ground ballscrew offers higher accuracy and precision compared to rolled ballscrew.
2.  Cost: Rolled ballscrew is generally less expensive than ground ballscrew.
3.  Lead time: Rolled ballscrew typically has a shorter lead time compared to ground ballscrew.

Choosing between Rolled and Ground Ballscrew:

1.  Application requirements: Consider the accuracy, precision, and load requirements of your application.
2. Budget: Determine your budget for the ballscrew.
3. Lead time: Consider the lead time required for your project.

In general, ground ballscrew is suitable for applications requiring high accuracy and precision, such as:

• CNC machines
• Robotics
• Medical equipment
• Aerospace

Rolled ballscrew is suitable for applications requiring lower accuracy and precision, such as:

• Material handling
•  Packaging machinery
• Industrial automation