6711-ZZ High-Velocity Thin-Section Ball Bearing | Friction-Minimized Metric Series | 55×68×7 mm
The 6711-ZZ is a specialized thin-section radial bearing engineered for high-speed rotation where space efficiency is a primary design requirement. Featuring dual non-contact metal shields (ZZ), this bearing provides a robust barrier against dust and debris while maintaining the lowest possible rotational friction. With a 55mm bore diameter and a slim 7mm width, it is the premier choice for large-diameter shafting in robotics, optical instruments, and precision automation where thermal buildup must be kept to a minimum.
6711-ZZ Deep Groove Ball Bearing 55x68x7 mm | 6700 Series | Double Metal Shields
A high-precision mechanical component optimized for rapid oscillation and consistent rotational accuracy. The 6711-ZZ belongs to the extra-thin metric series, allowing for significant weight reduction without sacrificing structural stiffness. The non-contact nature of the steel shields allows the bearing to reach significantly higher RPMs compared to sealed versions, making it ideal for precision spindles and high-frequency automated equipment. It effectively supports radial loads and moderate bidirectional axial loads within a highly compact envelope.

The 6711-ZZ is integrated into advanced systems requiring high-speed stability and space-saving geometry:
The 6711-ZZ allows for a 55mm shaft to be supported within a very small radial clearance. This "Thin-Section" geometry is critical for engineers looking to route electrical wiring, pneumatic lines, or coolant through the center of a rotating shaft while keeping the overall machine size manageable and lightweight.
Equipped with two non-contact pressed steel shields, the 6711-ZZ ensures that factory-applied lubrication stays within the raceways while preventing the entry of larger contaminants. Because the shields do not touch the inner ring, there is virtually zero drag, allowing the bearing to operate at higher speeds with much lower heat generation than sealed alternatives.
Manufactured from vacuum-degassed GCr15 chrome steel, this bearing offers exceptional fatigue life and dimensional stability. The high-grade balls and polished raceways ensure minimal vibration and noise, which is vital for sensitive applications like optical tracking and laboratory automation.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 67 Series (Extra-Thin) |
| Basic Designation | 6711 |
| Suffix | ZZ (Double Non-Contact Metal Shields) |
| 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) | 6.35 kN |
| Static Load Rating (C₀ʳ) | 6.65 kN |
| Limiting Speed (Grease) | 8,200 r/min |
| Limiting Speed (Oil) | 10,000 r/min |
| Weight (approx.) | 0.050 kg |
Compatible with the following industry-standard thin-section designations:
The 6711-ZZ is supplied pre-greased for maintenance-free operation under normal conditions. For high-temperature environments or vacuum applications, we can provide customized lubrication options or cage materials. If your application requires protection against liquids or fine dust, we recommend the 6711-2RS (contact rubber seals). Stainless steel (AISI 440C) versions are also available for maximum corrosion resistance in specialized sectors.
"The 6711-ZZ is the definitive solution for engineers demanding high-speed reliability and a minimalist footprint for large-diameter shaft applications."
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Details
The 6708-2RS is an Extra-Thin, Double Rubber-Sealed Deep Groove Ball Bearing designed for applications where space is at an absolute premium. Featuring a unique extremely slim cross-section (6 mm width) and a relatively large 40 mm bore, this bearing provides a compact rolling solution for mechanisms requiring low frictional torque and reliable sealing. Equipped with two contact rubber seals (2RS) , it provides superior protection against moisture and fine contaminants, ensuring long-term, maintenance-free operation in precision instruments and light-duty systems.
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Details
The 6709-ZZ is a precision Thin Section Deep Groove Ball Bearing designed for applications where space is limited and weight reduction is critical. Featuring a double shielded design (ZZ) with pressed steel covers on both sides, it effectively retains grease and excludes light contamination while maintaining minimal rotational torque. With its ultra-slim 45x55x6 mm cross-section, this bearing is engineered for compact mechanical and electromechanical systems .
Details
The 6710-2RS is a precision Thin Section Deep Groove Ball Bearing engineered for applications demanding minimal radial space and enhanced protection. Featuring a double contact rubber seal (2RS) on both sides, it provides superior exclusion of moisture, dust, and fine contaminants while retaining lubricant for extended maintenance-free operation. With its ultra-slim 50x62x6 mm cross-section, this bearing is ideal for compact industrial drives, medical devices, and automation equipment .
Details
Engineered specifically for restricted-space environments, the 6710-ZZ is an ultra-thin section deep groove ball bearing that delivers uncompromising precision without unnecessary bulk. Equipped with dual non-contact metal shields (ZZ), this bearing effectively blocks particulate contamination while permanently retaining its high-quality factory lubrication. Featuring a large 50mm bore, a 62mm outer diameter, and a remarkably slim 6mm width, it is the ultimate solution for robotics, optical equipment, and industrial automation assemblies where weight reduction and tight radial clearances are critical.
Details
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.
Details
The 6711-ZZ is a specialized thin-section radial bearing engineered for high-speed rotation where space efficiency is a primary design requirement. Featuring dual non-contact metal shields (ZZ), this bearing provides a robust barrier against dust and debris while maintaining the lowest possible rotational friction. With a 55mm bore diameter and a slim 7mm width, it is the premier choice for large-diameter shafting in robotics, optical instruments, and precision automation where thermal buildup must be kept to a minimum.
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