KB 2558 PP MGK 25x40x58 Linear Ball Bearing

Precision Linear Ball Bushing for 25 mm Guide Shafts

The KB 2558 PP MGK is a closed-type linear ball bearing (linear bushing) designed for smooth linear motion on 25 mm hardened and precision-ground guide shafts. With dimensions of 25 × 40 × 58 mm, it provides accurate guidance, low friction and reliable performance in linear motion systems. The bearing is equipped with PP seals on both sides, protecting the internal ball circuits against dust and contaminants while helping retain lubricant for extended service life.

Technical Specifications

Product Description

The KB 2558 PP MGK linear bearing is engineered to provide smooth, precise and repeatable linear motion in industrial automation and machinery. Multiple rows of recirculating precision balls continuously circulate inside the bearing, minimizing friction while ensuring accurate shaft guidance and consistent positioning.

Its closed design offers excellent rigidity and stability when mounted in a properly machined housing. Double PP seals protect the rolling elements from dust, chips and other contaminants while reducing lubricant loss, resulting in improved reliability and longer operating life.

The bearing is designed for use with 25 mm hardened linear shafts, making it suitable for applications requiring precision movement, repeatability and low operating resistance.

Key Features

• Precision linear guidance
• Smooth and quiet operation
• Low rolling resistance
• Closed linear bearing design
• Double PP sealing
• Excellent contamination protection
• Long service life with proper lubrication
• Compatible with 25 mm hardened guide shafts
• Easy installation
• Reliable performance in industrial automation

Typical Applications

The KB 2558 PP linear bearing is widely used in:

• CNC machines
• Industrial automation
• Linear guide systems
• Robotics
• Packaging machinery
• Assembly equipment
• Pick-and-place systems
• Industrial printers
• Measuring equipment
• Material handling systems

Final bearing selection should always comply with the machine manufacturer's engineering requirements.

Why Choose a Linear Ball Bearing?

Linear ball bearings are designed to deliver precise straight-line motion while minimizing friction and wear. The recirculating ball system provides excellent positioning accuracy, smooth travel and high operational efficiency.

The PP sealed version offers additional protection against dust and contamination, making it especially suitable for demanding industrial environments where reliability and long maintenance intervals are essential.

FAQ

What is KB 2558 PP MGK?

It is a closed-type linear ball bearing designed for 25 mm guide shafts.

What are the bearing dimensions?

The bearing dimensions are 25 mm × 40 mm × 58 mm.

What does PP mean?

PP indicates that the bearing is fitted with protective seals on both sides to keep contaminants out and lubricant in.

Which shafts is it designed for?

It is intended for use with 25 mm hardened and precision-ground linear guide shafts.

Where are linear ball bearings commonly used?

They are widely used in CNC machines, robotics, industrial automation, packaging equipment and precision manufacturing systems.

Does the bearing require lubrication?

Yes. Proper lubrication according to the machine manufacturer's recommendations ensures optimum performance and maximum service life.