Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit
68 Series
Home Deep Groove Ball Bearings 68 Series

6809-2RS Thin-Section Deep Groove Ball Bearing for Electric Motors & Automation | 45×58×7 mm

6809-2RS Thin-Section Deep Groove Ball Bearing for Electric Motors & Automation | 45×58×7 mm

The 6809-2RS is a high-precision, single-row deep groove ball bearing belonging to the ultra-thin 6800 series. Equipped with dual-lip synthetic rubber contact seals on both sides, this bearing is engineered to deliver exceptional contamination exclusion and reliable grease retention within an extremely low-profile design. Featuring a 45 mm bore and a 58 mm outer diameter, it provides the ideal solution for large-shaft applications with severe radial space constraints. The factory-prefilled grease and robust rubber seals make the 6809-2RS the industry standard for compact, lightweight mechanisms operating in challenging environments containing dust, debris, or moisture.

6809-2RS Deep Groove Ball Bearing 45×58×7 mm | 68 Series | Double Rubber Seals (2RS)

Designed for modern precision engineering, the 6809-2RS thin-section bearing is built for applications requiring robust shaft support where cross-sectional space is at a premium and relubrication is impractical. The dual contact rubber seals (2RS) establish a physical barrier that prevents airborne particulates, cutting fluids, and moisture from compromising the internal raceways, while locked-in premium grease ensures maintenance-free operation throughout its lifespan. It shares an identical 45 × 58 × 7 mm envelope with its open (6809) and shielded (6809-ZZ) counterparts, allowing for a direct, drop-in upgrade without housing modification. While the shielded 6809-ZZ offers higher limiting speeds via non-contact metal shields, the 6809-2RS is the technically superior choice for any environment where positive sealing and maximum contamination resistance are critical.

6809-2RS Thin-Section Deep Groove Ball Bearing for Electric Motors & Automation | 45×58×7 mm

Comprehensive Applications

The 6809-2RS excels in applications where a large-diameter 45 mm shaft must be supported within a thin-walled, lightweight housing:

Electric Motors & Drones
  • High-efficiency BLDC motor rotors
  • Industrial fan drives,
  • Large-scale drone main shafts
Textile & Printing Machinery
  • High-speed printing press rollers
  • Textile spinning spindles
  • Paper handling equipment
Bicycle Components
  • Premium bicycle bottom brackets
  • E-bike mid-drive motors
  • Oversized wheel hubs
Fitness & Medical Equipment
  • Treadmill rollers
  • Rotary medical scanning tables
  • Physical therapy apparatus

Key Performance Features

01. Factory-Sealed Lubrication for Maintenance-Free Longevity

The high-performance synthetic rubber seals lock in a precise factory grease charge, preventing lubricant leakage or throw-off under continuous rotation. This self-contained design eliminates the need for external oiling systems or scheduled regreasing intervals. For enclosed robot joints or tightly packaged electric motors where access is restricted, the 6809-2RS guarantees reliable performance from initial installation to the end of its service cycle.

02. Ultra-Thin Profile for Lightweight & Compact Designs

With a radial section height of just 6.5 mm, the 6809-2RS allows engineers to optimize space and drastically reduce overall system weight. Upgrading from an open or shielded variant to this sealed configuration requires zero housing redesign, making it a highly cost-effective solution for performance optimization without dimensional penalties.

03. Heavy-Duty Contact Seals for Demanding Environments

Operating environments for modern machinery often involve fine dust, moisture, or chemical mists. The 6809-2RS tackles this via oil-resistant nitrile rubber (NBR) lip seals bonded to the outer ring that exert light contact pressure against the inner ring shoulder. This creates an impermeable seal directly at the bearing boundary, bypassing the need for complex, heavy external sealing arrangements in the housing.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6800 Series (Ultra-Thin / Metric)
Basic Designation 6809
Suffix Double Contact Rubber Seal (2RS / LLU / DD)
Bore Diameter (d) 45 mm
Outer Diameter (D) 58 mm
Width (B) 7 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / SAE 52100)
Precision Class ISO Class 6 (ABEC-3) / Class 5 (ABEC-5) Available
Cage Design Pressed Steel (Ribbon Type)
Dynamic Load Rating (Cʳ) 6.20 kN
Static Load Rating (C₀ʳ) 5.40 kN
Limiting Speed (Grease) ~6,300 r/min
Limiting Speed (Oil) N/A — Permanently Grease Lubricated
Weight (approx.) 0.040 kg

Interchange Part Numbers

The 6809-2RS is fully interchangeable with the following manufacturer part numbers:

  • SKF: 61809-2RS1
  • NSK: 6809DD / 6809DDU
  • FAG (Schaeffler): 61809-2RSR
  • NTN: 6809LLU / 6809LLB
  • KOYO: 6809-2RS
  • NACHI: 6809-2NSE
  • Generic: 6809RS, MR6809-2RS, 6809UU, 1809-2RS

Design & Configuration

The light-contact rubber seals introduce a minor frictional torque compared to the non-contact shields of the 6809-ZZ, adjusting the maximum grease speed to 6,300 RPM. For high-speed applications operating in pristine, enclosed conditions, the 6809-ZZ should be considered. However, for real-world industrial environments where contamination is a constant threat, the 6809-2RS delivers the ultimate balance of space-saving geometry and robust environmental defense.

"The 6809-2RS is optimized for applications where radial space is limited but load requirements remain significant. Despite its slim 7 mm width, advanced raceway honing and premium ball selection yield a dynamic load rating of 6.20 kN."

Related Products

High Speed 6810-ZZ Thin Section Bearing showing Double Steel Shields (ZZ) for Low Friction Rotation in Robotics and UAV Gimbals
6810-ZZ Thin Section Deep Groove Ball Bearing For High-Speed & Lightweight Assemblies | 50×65×7 mm

The 6810-ZZ is a precision single-row thin-section ball bearing from the 6800 (61800) series, equipped with non-contact pressed steel shields on both sides. Featuring a 50 mm bore diameter paired with an exceptionally slim 65 mm outer diameter and 7 mm width, this bearing is engineered to provide reliable radial and axial support while significantly reducing overall assembly weight. The combination of an ultra-thin cross-section and low-friction metal shielding makes the 6810-ZZ the premier choice for applications demanding rapid rotational speeds, minimal heat generation, and strict space limitations.

Details
High Performance 6000 RPM 6810 2RS Bearing - GCr15 Chrome Steel P5 Precision Grade for Industrial Machinery and Electric Motors
6810-2RS Ultra-Slim Deep Groove Ball Bearing For Industrial Automation & Rotary Encoders | 50×65×7 mm

Engineered for highly confined radial spaces, the 6810-2RS is an extra-light, single-row deep groove ball bearing belonging to the specialized 6800 thin-section series. It is equipped with dual-lip contact rubber seals bonded firmly to the outer raceway, creating a reliable barrier against fine particulate matter and fluid spray. Measuring a substantial 50 mm in inner diameter while maintaining a mere 65 mm outer diameter and 7 mm width, this component allows engineers to utilize wider, stiffer shafts without incurring penalties in machine bulk or weight. The combination of its thin cross-section and integrated sealing makes the 6810-2RS the primary choice for automated systems operating in environments compromised by dust, lint, or moisture.

Details
6809-ZZ Thin Section Ball Bearing showing Double Pressed Steel Shields for Dust Protection and Low Friction Rotation
6809-ZZ Thin-Section Deep Groove Ball Bearing For Industrial Automation & Robotics | 45×58×7 mm

The 6809-ZZ is a single-row, thin-section deep groove ball bearing from the 6800 series, fitted with non-contact pressed steel shields on both faces. Featuring a 45 mm bore and a highly compact 58 mm outer diameter, it occupies one of the slimmest profiles available for large-shaft metric ball bearings. This unique geometry—combining a large internal diameter with a minimal 7 mm cross-section—makes the 6809-ZZ the definitive choice for space-constrained assemblies where weight reduction and low-friction rotation are paramount. The double steel shields retain the factory grease fill while preventing the ingress of large particulate matter, ensuring extended service life without the thermal drag associated with rubber seals.

Details
GCr15 Chrome Steel 6809-2RS Radial Bearing ABEC 3 Grade for Electric Motors, Robotics, and Bicycle Bottom Brackets
6809-2RS Thin-Section Deep Groove Ball Bearing for Electric Motors & Automation | 45×58×7 mm

The 6809-2RS is a high-precision, single-row deep groove ball bearing belonging to the ultra-thin 6800 series. Equipped with dual-lip synthetic rubber contact seals on both sides, this bearing is engineered to deliver exceptional contamination exclusion and reliable grease retention within an extremely low-profile design. Featuring a 45 mm bore and a 58 mm outer diameter, it provides the ideal solution for large-shaft applications with severe radial space constraints. The factory-prefilled grease and robust rubber seals make the 6809-2RS the industry standard for compact, lightweight mechanisms operating in challenging environments containing dust, debris, or moisture.

Details
6808-2RS Thin Section Ball Bearing showing Double Contact Rubber Seals for Superior Dust and Moisture Protection
6808-2RS Thin Section Deep Groove Ball Bearing For Robotics & Lightweight Assemblies | 40×52×7 mm

The 6808-2RS is a single-row thin-section deep groove ball bearing from the 6800 series, fully sealed on both sides with contact rubber lips that ride directly against the inner ring shoulder. Featuring a 40 mm bore and a highly compact 52 mm outer diameter, it offers an exceptionally slim 7 mm cross-section. This geometry delivers essential weight reduction and space savings without sacrificing the contamination exclusion and long-term grease retention of a fully sealed unit. This combination—a large 40 mm bore within a narrow 52 mm envelope, integrated contact seals, and life-time lubrication—makes the 6808-2RS the optimal solution for precision machinery operating in dusty, damp, or debris-prone environments where standard-sized bearings would be too bulky or heavy.

Details
6808 Open Thin Section Ball Bearing showing Unshielded Design for Maximum Lubrication Flow and Ultra Low Friction
6808 Open Thin-Section Deep Groove Ball Bearing For Oil-Lubricated & Enclosed Systems | 40×52×7 mm

The 6808 is a single-row, thin-section miniature deep groove ball bearing from the 6800 series, manufactured in an open configuration without shields or seals. Featuring a 40 mm bore and a highly compact 52 mm outer diameter, it delivers an extremely slim 7 mm cross-section. This open-type design is specifically engineered for internal machinery applications where the bearing operates within an already sealed housing, such as an oil bath or centralized lubrication system. By omitting the sealing components, the 6808 Open achieves the lowest possible starting and running torque, making it the premier choice for ultra-high-speed, space-constrained assemblies where frictional losses must be completely minimized.

Details
Premium 35x47x7mm 6807 ZZ Bearing Replacement for SKF 61807-2Z and NSK 6807ZZ used in Precision Robotics
6807-ZZ Shielded Thin-Section Deep Groove Ball Bearing For Measurement Systems | 35×47×7 mm

Belonging to the ultra-compact 6800 series, the 6807-ZZ is a single-row, thin-section deep groove ball bearing equipped with dual metal shields. With a 35 mm bore, a 47 mm outer diameter, and a slim 7 mm profile, this bearing delivers exceptional space-saving advantages. Unlike open-type bearings, the 6807-ZZ features non-contact steel shields on both sides, making it a maintenance-free, factory-greased solution. It is specifically engineered to retain lubricants internally while effectively blocking dust, metallic shavings, and other external contaminants. This shielded configuration provides a perfect balance—offering robust environmental protection without introducing the heavy rotational drag associated with rubber seals, ensuring high-speed capability with minimal friction.

Details
Pre-lubricated 6807 2RS Deep Groove Bearing - GCr15 Chrome Steel ABEC-3 Grade for Robotics and Automation
6807-2RS Thin-Section Deep Groove Ball Bearing For Harsh Environments & Low-Maintenance Systems | 35×47×7 mm

Engineered for uncompromising protection, the 6807-2RS is a single-row, thin-section deep groove ball bearing from the 6800 series, equipped with contact rubber seals on both sides. With a 35 mm inner bore and a 47 mm outer diameter, it maintains an ultra-slim 7 mm profile. Unlike open-type variants, this sealed design is purpose-built for external or exposed machinery where the bearing must defend against moisture, dust, and particulate contamination. Factory-packed with premium quality grease, the 6807-2RS locks in its own lubrication for the entirety of its lifespan. By utilizing heavy-duty NBR (Nitrile Butadiene Rubber) seals, this bearing minimizes maintenance requirements, making it the superior choice for space-constrained applications operating in demanding, less-than-clean environments.

Details

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Submit

Home

Products

whatsApp

contact