NTN 6005 LLUC3/5K Deep-Groove Ball Bearing (25x47x12)

Main Description

The NTN 6005 LLUC3/5K is a premium-quality, single-row deep-groove ball bearing, measuring 25 mm (inner diameter) x 47 mm (outer diameter) x 12 mm (width). Its robust design makes it perfectly suited for a wide array of industrial applications demanding reliable performance, low friction, and high durability.

This bearing features rubber sealing on both sides (LLU), effectively protecting the internal components from dust, dirt, and moisture — a vital advantage in harsh operating environments. The C3 radial internal clearance ensures a slightly increased gap within the bearing, allowing for thermal expansion and stabilizing performance under variable temperature and speed conditions. This is particularly useful in heavy-duty machines, electric motors, and rotating assemblies.

Greased with Multemp SRL “5K” high-temperature grease, the bearing operates reliably over a wide temperature range, typically from around -25 °C to +110 °C, making it well-suited for continuous-duty or elevated-temperature zones. The pressed-steel cage ensures structural integrity under dynamic loads while maintaining low noise and smooth rolling behavior.

Performance-wise, this bearing offers a dynamic load rating of approximately 11.2 kN and a static load rating of 5.85 kN, providing a solid and dependable load-bearing capacity. The limiting (grease-lubricated) speed is approximately 9,400 rpm, making it compatible with high-speed applications without compromising lifespan.

Because it lacks electrical insulation, this bearing is best used in applications where no stray current is expected. Mounted in housings or obudowa łożyskowa (bearing housings), it provides flexibility for both OEM and maintenance markets. As part of a bearing unit or integrated into your mechanical system, the 6005 LLUC3/5K stands out as a reliable choice where performance and longevity are critical.

Sections

Applications

• Industrial machinery (gearboxes, conveyors, pumps)

• Electric motors and generators

• Fans, blowers, and blowers in HVAC systems

• Bearing units and housings requiring sealed, high-clearance bearings

Key Advantages

• Long service life thanks to steel cage and deep-groove design

• Effective contamination resistance via dual-sided rubber seals

• Compensation for temperature fluctuations via C3 clearance

• High-temperature lubricant for sustained performance

• Smooth operation at high speeds with low friction

Technical Specifications

• Bore (d): 25 mm

• Outside diameter (D): 47 mm

• Width (B): 12 mm

• Clearance: C3 (increased radial clearance)

• Sealing: LLU (rubber seals both sides)

• Cage: Pressed steel

• Dynamic load: ~11.2 kN

• Static load: ~5.85 kN

• Grease: Multemp SRL “5K”

• Max grease-lubricated speed: ~9,400 rpm

• Operating temperature: -25 °C … +110 °C

• Electrical insulation: None

FAQ

Q1: What does “LLUC3/5K” mean in the bearing designation?
A1: “LLU” indicates rubber seals on both sides. “C3” refers to a slightly increased radial clearance compared to standard-clearance bearings. “5K” denotes the specific high-temperature grease (Multemp SRL) used inside.

Q2: Is this bearing suitable for high-speed applications?
A2: Yes, it supports speeds up to approximately 9,400 rpm when properly greased, making it ideal for dynamic, fast-rotating systems.

Q3: Can this bearing handle high temperatures?
A3: Absolutely. Thanks to the 5K high-temperature grease, it operates reliably in a range from about -25 °C up to +110 °C.

Q4: Does this bearing provide electrical insulation?
A4: No. This model does not have current insulation, so it's not designed for applications where stray electric current flows through the bearing.

Q5: In what types of industrial systems would I typically use this bearing?
A5: You can use it in electric motors, pumps, blowers, gearboxes, and bearing housings, particularly where sealed, durable and temperature-resistant bearings are needed.