INA KN 12 B PP - Linear Ball Bearing 12x22x32 mm

High-Precision Linear Motion Bearing for CNC, Automation and Robotics

The INA KN 12 B PP is a high-quality linear ball bearing designed for precise and smooth linear motion. With dimensions 12 x 22 x 32 mm, this bearing fits 12 mm guide shafts and provides reliable support for linear movements in CNC machines, automation systems, and mechanical assemblies.

Often searched as KN12BPP, INA KN 12 B PP, or linear ball bushing 12 mm, this bearing features dual PP seals for protection against dust and contaminants, extending its operational life in demanding environments.

✅ Technical Specifications

• Manufacturer: INA (Schaeffler Group)

• Model: KN 12 B PP

• Dimensions: 12x22x32 mm (IDxODxLength)

• Bearing type: Linear ball bushing (closed type)

• Material: Hardened steel outer shell, plastic (PP) cage

• Sealing: PP seals on both sides

• Dynamic load rating: approx. 870 N

• Static load rating: approx. 740 N

• Recommended shaft tolerance: h6 / h7

• Operating temperature: -20 °C to +80 °C

• Lubrication: Pre-lubricated, re-lubrication possible

⚙️ Key Features & Benefits

• Smooth linear motion - low-friction operation and precise guidance

• Compact size (12x22x32 mm) - perfect for tight-space installations

• PP seals - protect against dust and contamination

• Noise reduction - plastic cage ensures quieter operation

• Easy installation - compatible with standard 12 mm linear shafts

• Reliable INA quality - precision and long service life guaranteed

📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4
🚚 24h shipping - fast and efficient order processing

❓ FAQ - Frequently Asked Questions

Q1: What does “B PP” mean in KN 12 B PP?
“B” refers to the linear series type, while “PP” indicates plastic end seals or cage components providing extra protection.

Q2: What’s the difference between the open and closed versions?
The closed version (B PP) is fully enclosed, protecting the rolling elements from debris and extending bearing life.

Q3: Does it require lubrication?
Yes, it is pre-lubricated but can be re-lubricated when used in high-load or dusty environments.

Q4: What shafts is it compatible with?
It fits Ø 12 mm precision ground shafts with tolerance h6 / h7 for optimal performance.

Q5: Where is this bearing commonly used?
In CNC machines, automation systems, linear guides, 3D printers, and robotic assemblies.

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