KB12 UU NB — Sealed Linear Ball Bushing (12 mm)
Processing time: 2-3 days
€20.96
(net)
Price for: 1pcs.
The KB12 UU NB is a sealed, double-sided linear ball bushing with a 12 mm bore, designed to provide durable, precise, low-friction linear motion. With four ball circuits and protective seals, it is suited for demanding industrial and automation applications. Backed by our warehouse in Lublin and 24h shipping, simmering.pl is your trusted supplier for high-quality linear motion components.
High-Precision Sealed KB12UU NB Linear Bearing for Smooth Motion
Include phrases such as:
“KB12 UU NB”, “KB12UU NB linear bearing”, “12 mm sealed linear bushing”, “sealed linear ball bushing 12 mm”, “NB KB12UU NB”, “linear motion bearing 12 mm sealed”, “KB series linear bearing”, “closed type linear bearing 12 mm”
Product Description (SEO-Optimized, Technical)
Overview
The KB12 UU NB is a sealed linear ball bushing (linear bearing) from NB’s KB series, engineered for use with 12 mm shafts. With double-sided lip seals (“UU”), it offers protection from dust and contaminants while delivering smooth, low-friction linear motion in a compact form.
Key Features & Advantages
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Sealed (UU type): protects internal balls from dust, debris, and contaminants
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Four ball circuits: ensures even load distribution and reduced vibration
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Built for low friction and high repeatability
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Durable construction suitable for industrial use
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Compact size: ideal for systems with limited space
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Compatible with NB’s KB series
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Balanced performance for both axial and radial loading in linear motion axes
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Inner diameter (shaft size) | 12 mm |
| Outer diameter | 22 mm |
| Overall length | 32 mm |
| Number of ball circuits | 4 |
| Dynamic load rating (Cr) | ~ 510 N |
| Static load rating (Cor) | ~ 784 N |
| Sealing | Double lip seals (“UU”) |
| Brand / Series | NB, KB series |
Applications
The KB12 UU NB linear bearing is ideal for use in industrial automation, precision machinery, robotics, CNC machines, linear stages, and other systems that require reliable, low-friction linear guidance in harsh or dusty environments.
Installation & Maintenance Notes
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Use a straight, clean 12 mm shaft with minimal surface roughness
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Ensure correct alignment of shaft and bearing
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Apply recommended grease or lubricant for longer life
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Regularly inspect seals and clean the external environment
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Avoid shock loads or side impacts on the bearing during operation
📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4
🚚 24h shipping - fast and efficient order processing
FAQ (Frequently Asked Questions)
Q: What does “UU” mean in KB12 UU NB?
A: It indicates that the bearing has double-sided lip seals (sealed on both sides) to protect against dust and contaminants.
Q: What is the inner diameter of this bearing?
A: The inner bore (shaft size) is 12 mm.
Q: Can this bearing handle heavy loads?
A: Yes — it has a dynamic load rating of approximately 510 N and static rating around 784 N.
Q: Is this bearing suitable for dusty or contaminated environments?
A: Yes — the sealed “UU” design helps prevent ingress of dust and debris, improving longevity in harsher settings.
Q: Can I order an unsealed variant?
A: Yes — NB’s KB series also includes open (non-sealed) or other variants depending on requirements.
Q: How quickly do you ship?
A: We offer 24h shipping from our warehouse in Lublin to serve our B2B customers globally.
KB 12 UU NB
Processing time: 2-3 days
Data sheet
- Diameter in. (mm)
- 12
- Diameter out. (mm)
- 22
- Height (mm)
- 32
- Mark
- NB
The KB12 UU NB is a sealed, double-sided linear ball bushing with a 12 mm bore, designed to provide durable, precise, low-friction linear motion. With four ball circuits and protective seals, it is suited for demanding industrial and automation applications. Backed by our warehouse in Lublin and 24h shipping, simmering.pl is your trusted supplier for high-quality linear motion components.