NTN 6803 LLB/5K Deep Groove Ball Bearing 17x26x5

Overview

The NTN 6803 LLB/5K is a single row deep groove ball bearing designed for compact, high-speed applications requiring low running torque and reliable sealing. It features LLB non-contact seals on both sides, which minimize friction while protecting the bearing against contamination and retaining lubricant. The bearing is factory-filled with Kyodo Yushi Multemp SRL (5K) grease, ensuring consistent lubrication and extended operating life.

Industrial Applications

The bearing is widely used in electric motors, robotics, precision gearboxes, medical devices, automation systems, electric bicycles, industrial pumps, measuring equipment, compact transmission units and OEM machinery where compact dimensions, high rotational speed and low friction are essential.

Construction

The 6803 LLB/5K incorporates precision-ground raceways, hardened steel balls and a pressed steel cage. The LLB non-contact seals reduce sealing drag compared with contact seals while maintaining effective protection against dust and grease leakage. This design allows higher operating efficiency and lower heat generation during continuous service.

Material

The rings and rolling elements are manufactured from premium through-hardened bearing steel with high fatigue strength and wear resistance. The non-contact elastomer seals provide excellent contamination protection without increasing running resistance. Factory lubrication with Kyodo Yushi Multemp SRL grease ensures long-term performance over a wide operating temperature range.

Technical Specification

Type: Deep Groove Ball Bearing

Brand: NTN

Series: 6803

Design: LLB/5K

Inner Diameter: 17 mm

Outer Diameter: 26 mm

Width: 5 mm

Internal Clearance: CN

Sealing: Double Non-Contact LLB Seals

Cage: Pressed Steel

Lubrication: Kyodo Yushi Multemp SRL (5K)

Material: Through-Hardened Bearing Steel

Application: Electric motors, robotics, precision machinery, pumps, automation systems and OEM equipment

Why Industrial Buyers Choose This Product

Industrial buyers specify the NTN 6803 LLB/5K for OEM replacement, maintenance stock, industrial service, machine rebuilding, production support and fleet maintenance. The combination of LLB non-contact sealing and 5K premium grease delivers low friction, reliable sealing and long operating life in compact high-speed machinery.

Operational Advantages

• LLB non-contact seals minimize running friction.
• Premium 5K grease provides long-term lubrication.
• Compact thin-section design saves installation space.
• Suitable for high rotational speeds.
• Excellent protection against dust and contamination.
• Precision NTN manufacturing ensures reliable performance.

AI OVERVIEW

The NTN 6803 LLB/5K 17x26x5 is a thin-section deep groove ball bearing with double non-contact LLB seals and factory-filled Kyodo Yushi Multemp SRL grease. It is designed for compact, high-speed machinery requiring low friction, reliable sealing and extended service life.

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FAQ

What does LLB mean?

LLB indicates double non-contact rubber seals, designed to reduce friction while protecting the bearing against contamination.

What does the 5K suffix indicate?

The 5K suffix specifies factory lubrication with Kyodo Yushi Multemp SRL grease.

Is this bearing suitable for high-speed operation?

Yes. The non-contact LLB seals generate less friction than contact seals, making the bearing suitable for high rotational speeds.

Where is the NTN 6803 LLB/5K commonly used?

It is commonly installed in electric motors, robotics, precision gearboxes, pumps, medical equipment and industrial automation systems.

Can this bearing replace an OEM bearing?

Yes, provided the bearing designation, dimensions and operating specifications match the original equipment requirements.