The INA KBO2558 PP sealed linear ball bushing (25x40x58 mm) delivers precise, low-friction linear motion while protected against contaminants via double lip seals. With five ball circuits, robust load capacities, and durable construction, it's well suited for CNC, robotics, automation, and motion systems requiring reliability and longevity. Backed by our warehouse in Lublin, Poland, we offer fast 24h shipping for B2B clients globally — making simmering.pl your trusted source for high-end linear motion components.
The KBO2558 PP INA is a precision sealed linear ball bushing (also called linear bearing or ball sleeve) from INA’s KBO series. It is designed for 25 mm shafts, with outer diameter 40 mm, total length 58 mm, and features double-sided lip seals (PP) to provide protection against dust, debris, and contaminants while enabling smooth linear motion.
Double lip seals (PP type) on both sides to block dirt and contaminants
Five ball circuits (rows) for uniform load distribution and stable motion
Low friction coefficient and consistent performance in demanding environments
Durable design suitable for industrial use and continuous operation
Compact form factor ideal for constrained spaces
Compatible with INA KBO series and modular linear systems
| Parameter | Typical Value |
|---|---|
| Bore (shaft size) | 25 mm |
| Outer diameter | 40 mm |
| Length (width) | 58 mm |
| Ball circuits | 5 |
| Dynamic load rating (C) | ~ 2850 N |
| Static load rating (C0) | ~ 2330 N |
| Mass | ~ 0.12 - 0.15 kg |
| Seal type | Double lip seals (2L / PP) |
| Manufactured by | INA (Schaeffler) |
The KBO2558 PP linear bearing is ideal for systems that require precise, reliable linear motion under protection from dust, such as:
CNC machines and milling systems
Automated linear actuators and positioning systems
Packaging machines and conveyors
Robotic motion axes
Optical / measurement equipment
Industrial automation modules
Mount on hardened, ground shaft of 25 mm with appropriate surface finish
Ensure alignment and cleanliness during installation
Use recommended grease or lubricant; seals help retain lubrication
Periodically inspect seal integrity and ensure the environment is free from large particles
Avoid shock loads or transverse impacts to prolong life
📍 Warehouse & Store: Lublin, ul. Smoluchowskiego 1, building 4
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Q: What does “PP” mean in KBO2558 PP?
A: “PP” denotes double-sided lip sealing, i.e. that the linear ball bushing has lip seals on both ends to protect its interior from dust and contaminants.
Q: What are the dimensions of KBO2558 PP?
A: The bearing has dimensions 25 mm (inner bore) x 40 mm (outer diameter) x 58 mm (length).
Q: What is its load capacity?
A: Dynamic load rating is approximately 2850 N, static load rating about 2330 N.
Q: Is this bearing suitable for dusty or harsh environments?
A: Yes — the double lip seals (PP) help block ingress of dust, improving durability in harsher operational settings.
Q: Can I get an unsealed version?
A: Yes, the INA KBO series includes unsealed (open) variants for applications where sealing is not required.
Q: How quickly do you ship?
A: We dispatch from our warehouse in Poland; 24h shipping ensures fast delivery to our B2B customers.
Data sheet