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
67 Series
Home Deep Groove Ball Bearings 67 Series

6705-2RS Thin Section Sealed Deep Groove Ball Bearing | 25×32×4 mm | Precision Robotics & Automation

6705-2RS Thin Section Sealed Deep Groove Ball Bearing | 25×32×4 mm | Precision Robotics & Automation

The 6705-2RS is an ultra-thin section single row deep groove ball bearing designed specifically for applications where space constraints and weight reduction are critical. Equipped with dual rubber contact seals (-2RS), this component offers superior protection against dust, dirt, and moisture while locking in the factory-filled lubricant for its entire lifespan. With a highly compact 25mm bore, a 32mm outer diameter, and an exceptionally slim 4mm profile, it is engineered for precision mechanisms, robotics, and lightweight equipment requiring reliable rotational performance in strictly confined spaces.

6705-2RS Deep Groove Ball Bearing 25x32x4 mm | 67 Series Thin-Walled | Maintenance-Free

This specialized thin-profile bearing excels in delivering smooth, low-friction operation without adding unnecessary bulk to your assembly. The double-sealed configuration ensures the 6705 remains entirely maintenance-free, effectively preventing grease leakage even in demanding or exposed environments. It serves as a crucial element for lightweight rotational systems, supporting moderate radial loads and light axial loads while operating efficiently at high speeds.

6705-2RS Thin Section Sealed Deep Groove Ball Bearing | 25×32×4 mm | Precision Robotics & Automation

Comprehensive Applications

Ideal for compact devices, precision electronics, and automated systems requiring extremely tight clearances and lightweight components:

Hobbyist & RC Models
  • RC Helicopters & Multi-rotors
  • High-Performance RC Cars (Chassis & Hubs)
  • Scale Model Drive Shafts
  • Radio Controlled Boat Propellers
Precision Robotics & Automation
  • Robotic Arm Joints & Articulations
  • Automated Guided Vehicles (AGVs)
  • Drone Gimbal Systems
  • Miniature Stepper Motors
Light Industrial & Electronics
  • Compact Office Automation Equipment
  • Portable Power Tools
  • Micro Gearboxes
  • Automated Packaging Sensors
High-Tech & Optical Equipment
  • Medical Imaging Devices
  • Precision Camera Lenses & Mounts
  • Surveying & Measuring Instruments
  • Telescope Mount Assemblies

Key Performance Features

01. Ultra-Compact & Lightweight Design

Maximizes space efficiency for miniaturized assemblies. The extremely thin 4mm cross-section significantly reduces the overall weight of the machinery without sacrificing precision, making it perfect for weight-sensitive aerospace and drone applications.

02. Dual Contact Sealing (-2RS)

Features premium NBR (Nitrile Butadiene Rubber) seals on both sides to lock in high-quality grease and keep out abrasive contaminants. This ensures a longer operational lifespan with zero maintenance required after installation.

03. Low Torque & High Precision

Manufactured with high-grade GCr15 Chrome Steel and precision tolerances to minimize friction torque. This allows for rapid acceleration, quiet operation, and highly accurate positioning in sensitive electronics.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6700 Series (Ultra-Thin Section)
Basic Designation 6705
Suffix 2RS (Double Rubber Seals)
Bore Diameter (d) 25 mm
Outer Diameter (D) 32 mm
Width (B) 4 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Sealing Material NBR Rubber with Steel Insert
Dynamic Load Rating (Cʳ) 1.48 kN
Static Load Rating (C₀ʳ) 1.15 kN
Limiting Speed (Grease) 14,000 r/min
Limiting Speed (Oil) --
Weight (approx.) 0.007 kg (7 grams)

Interchange Part Numbers

Common manufacturer equivalents include:

  • SKF: 61705-2RS
  • NSK: 6705VV / 6705DDU
  • FAG6705-2RS
  • NTN: 6705LLU
  • KOYO: 6705-2RS
  • NMB: 6705DD

Design & Configuration

The 6705-2RS arrives pre-lubricated and fully sealed, optimized for immediate drop-in installation in high-precision, low-clearance systems. For environments requiring even less rolling friction where contamination is not a primary concern, this model is also available with non-contact metallic shields (6705-ZZ) or in a completely open variant (6705). Please contact our technical team to discuss the ideal sealing solution for your specific application.

"Integrate the 6705-2RS into your next project for space-saving efficiency, unmatched precision, and reliable sealed protection."

Related Products

6704-ZZ Thin Section Ball Bearing highlighting dual pressed steel shields for high-speed low friction operation
6704-ZZ Extra-Thin Deep Groove Ball Bearing | Double Shielded | 20×27×4 mm

Engineered for extreme space limitations, the 6704-ZZ is a single row thin-section ball bearing that delivers high-speed capabilities in a remarkably compact form. Featuring dual pressed steel shields (ZZ), this 20x27x4 mm component effectively guards against coarse debris while retaining the premium factory lubricant. Its ultra-lightweight architecture is highly sought after for advanced robotics, micro-motors, and precision instrumentation where minimizing rotational mass is essential.

Details
6704-2RS Thin Section Ball Bearing showing Double Rubber Contact Seals for Water and Dust Resistance in Outdoor Drones and RC Vehicles
6704-2RS Rubber Sealed Thin Section Deep Groove Ball Bearing | 20×27×4 mm

The 6704-2RS is an ultra-compact, single row ball bearing engineered specifically for constrained spaces where protection against environmental contaminants is an absolute priority. Distinguished by its dual rubber contact seals (2RS), this thin-wall model creates a highly effective barrier against moisture, dust, and abrasive particles while securely retaining its internal lubrication. With its precise 20mm bore, 27mm outer diameter, and slim 4mm profile, the 6704-2RS delivers exceptionally reliable performance for outdoor robotics, fluid-handling devices, and specialized optical gear.

Details
6704 Open Type Thin Section Ball Bearing displaying Exposed Rolling Elements for Oil Lubrication and Maximum Rotational Speed
6704 Open Thin Section Deep Groove Ball Bearing For Semiconductor | 20×27×4 mm

The 6704 is an ultra-lightweight, unsealed single row ball bearing designed for applications where maximum rotational speed and absolute minimum frictional resistance are required. Featuring a classic open architecture, this thin-wall bearing provides direct access to the rolling elements, making it ideal for machinery equipped with continuous oil circulation or oil bath lubrication systems. With its highly compact 20mm bore, 27mm outer diameter, and 4mm width, the 6704 serves as a foundational component for internal, highly protected mechanical assemblies where space is at a premium.

Details
6703-ZZ Thin Section Ball Bearing showing Dual Metal Shields for Debris Resistance and Space-Saving Design
6703-ZZ Thin Section Deep Groove Ball Bearing | Shielded Lightweight Bearing | 17×23×4 mm

The 6703-ZZ is a specialized thin-wall metric ball bearing engineered for applications where strict weight reduction and limited radial space are primary concerns. Featuring two non-contact steel shields (ZZ), this component effectively blocks external particulates while maintaining minimal rotational friction. With an oversized 17mm bore, a compact 23mm outer diameter, and a narrow 4mm width, it is an optimal choice for hollow shaft designs, robotic joints, and advanced aerospace mechanisms.

Details
Chrome Steel 6703-2RS Bearing with High-Performance NBR Seals for Electric Scooters and Robotic Joints
6703-2RS Sealed Thin Section Ball Bearing | Rubber Sealed Space-Saving Bearing | 17×23×4 mm

The 6703-2RS is a high-performance, extra-light series ball bearing designed for mechanical assemblies that demand a balance between compact dimensions and superior protection. Equipped with dual-lip synthetic rubber seals (2RS), this model excels in shielding the internal raceways against moisture, grit, and lubricant leakage. Its thin-wall profile, featuring a 17mm bore and a 23mm outer diameter, makes it an essential component for outdoor robotics, bicycle hubs, and industrial sensors operating in challenging environments.

Details
6703 Open Ball Bearing showing exposed Chrome Steel Balls and Raceway for Zero-Friction High Speed Oil Lubrication
6703 Open Type Thin Section Ball Bearing | Unshielded Metric Bearing | 17×23×4 mm

The 6703 is a premium open-type thin-section ball bearing designed for high-precision assemblies where external lubrication systems are utilized. By eliminating seals and shields, this model offers the absolute minimum starting torque and rotational resistance, allowing for seamless operation in high-speed oil-bath or oil-mist environments. Its 17mm bore and 23mm outer diameter provide a large inner diameter relative to its slim 4mm width, making it a favorite for hollow-shaft sensors and high-frequency instrumentation.

Details
6702-2RS Ball Bearing with Dual Contact Rubber Seals for Moisture and Dust Protection
6702-2RS Thin Section Deep Groove Ball Bearing | Rubber Sealed Lightweight Bearing | 15×21×4 mm

The 6702-2RS is a high-precision, extra-light series bearing engineered for mechanical assemblies where radial space is extremely limited but environmental protection is mandatory. Outfitted with dual contact rubber seals (2RS), this bearing provides a resilient barrier against fine dust, moisture, and lubricant leakage. With a 15mm bore and a slender 4mm width, it is an essential component for high-performance bicycle hubs, robotic joint actuators, and compact medical rotary devices.

Details
6702 Open Type Ball Bearing showing Unshielded Chrome Steel Balls for Zero-Drag and High Speed Oil Lubrication
6702 Open Type Thin Section Ball Bearing | Unshielded Metric Micro Bearing | 15×21×4 mm

The 6702 is a high-precision open-type thin-section bearing designed for advanced mechanical systems that prioritize ultra-low starting torque and unrestricted lubrication access. By omitting integrated seals or shields, this model achieves the lowest possible rotational friction, making it an ideal candidate for high-speed oil-bath environments and sensitive measuring instruments. With a 15mm bore and a slim 4mm profile, the 6702 serves as a critical rotational support for hollow-shaft encoders, robotic joints, and aerospace-grade telemetry systems.

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