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67 Series
Home Deep Groove Ball Bearings 67 Series

6711-2RS Thin-Section Deep Groove Ball Bearing | Sealed Precision Performance | 55×68×7 mm

6711-2RS Thin-Section Deep Groove Ball Bearing | Sealed Precision Performance | 55×68×7 mm

The 6711-2RS is a high-performance, extra-light metric bearing designed for applications where radial space is at a premium and environmental protection is a necessity. Featuring contact rubber seals (2RS) on both sides, this thin-section bearing provides a superior barrier against moisture, dust, and fine particulates compared to shielded versions. With a 55mm bore and a slim 7mm width, it offers a perfect balance of large-diameter shaft support and a minimalist mounting footprint, making it indispensable for modern automated machinery.

6711-2RS Deep Groove Ball Bearing 55x68x7 mm | 6700 Series | Dual Contact Rubber Seals

A precision-machined component optimized for stability and protection. The 6711-2RS utilizes a specialized thin-wall architecture that maintains high rotational accuracy while significantly reducing the overall weight of the housing assembly. The integrated nitrile rubber seals ensure that the high-grade internal lubricant remains contained, even in vertical orientations or environments prone to light splashing. This model is engineered to handle radial loads and moderate thrust loads, providing a reliable, low-maintenance solution for high-tech industrial hardware.

6711-2RS Thin-Section Deep Groove Ball Bearing | Sealed Precision Performance | 55×68×7 mm

Comprehensive Applications

The 6711-2RS is a versatile component found in a wide array of precision-driven sectors:

Industrial Automation & Robotics
  • Multi-axis collaborative robot joints
  • Automated sorting and conveyor pulleys
  • Precision rotary actuators and sensors
  • Robotic gripper rotation units
Medical Imaging & Laboratory Equipment
  • Centrifuge rotor support systems
  • Diagnostic imaging table height adjusters
  • Laboratory fluid agitation mechanisms
  • Specialized surgical lighting pivots
Packaging & Processing Machinery
  • Food-grade filling and capping stations
  • Labeling machine roller supports
  • Heat-sealing mechanism guides
  • Automated weighing and dosing systems
Optical & Telecommunications Hardware
  • Large-scale gimbal stabilization platforms
  • Satellite dish azimuth/elevation drives
  • Remote-operated camera crane joints
  • Precision optical grinding equipment

Key Performance Features

01. Ultra-Thin Radial Cross-Section

The primary advantage of the 6711-2RS is its extremely low-profile design. By maintaining a cross-section of only 6.5mm (radial height), it allows for a significantly larger shaft diameter within a compact outer housing. This enables engineers to design stiffer, more hollow-shaft systems for routing cables or fluids without increasing the machine's overall bulk.

02. Enhanced 2RS Contact Sealing Technology

Unlike shielded bearings, the 2RS configuration utilizes reinforced rubber seals that make physical contact with the inner ring. This creates a highly effective seal that excludes fine dust and prevents grease leakage. This feature makes the 6711-2RS the ideal choice for environments where cleanliness and long-term lubrication retention are prioritized over maximum theoretical speed.

03. High Structural Rigidity vs. Low Weight

Despite its slender dimensions, the 6711-2RS is manufactured from high-density GCr15 chrome steel, providing excellent fatigue resistance and structural integrity. The design minimizes rotational inertia, allowing for rapid acceleration and deceleration in servo-controlled applications, which is vital for high-speed pick-and-place automation.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 67 Series (Extra-Thin)
Basic Designation 6711
Suffix 2RS (Double Contact Rubber Seals)
Bore Diameter (d) 55 mm
Outer Diameter (D) 68 mm
Width (B) 7 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard (P0) / P6 or P5 Available Upon Request
Cage Material Pressed Steel
Dynamic Load Rating (Cʳ) 6.30 kN
Static Load Rating (C₀ʳ) 6.60 kN
Limiting Speed (Grease) 5,300 r/min
Limiting Speed (Oil) 10,000 r/min
Weight (approx.) 0.052 kg

Interchange Part Numbers

Directly compatible with industry-standard thin-section bearings:

  • SKF: 61711-2RS1 / 6711-2RS
  • NSK: 6711DDU
  • FAG: 6711.2RSR
  • NTN: 6711LLU
  • KOYO: 6711-2RS

Design & Configuration

The 6711-2RS comes pre-filled with high-performance lithium-based grease as standard. While the rubber seals provide maximum protection, we also offer the 6711-ZZ (metal shields) for higher-speed applications with lower friction requirements. For specialized industries such as food processing or chemical handling, stainless steel (AISI 440C) versions can be supplied upon request to ensure maximum corrosion resistance.

"The 6711-2RS provides the critical sealing and space-saving geometry required for the next generation of precision automation and medical technology."

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Request a Quote for Ball Bearings

Request a Quote for Ball Bearings
Please submit your inquiry below for detailed product and pricing information. We will get back to you within 24 hours.
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