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68 Series
Home Deep Groove Ball Bearings 68 Series

6807-ZZ Shielded Thin-Section Deep Groove Ball Bearing For Measurement Systems | 35×47×7 mm

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.

6807-ZZ Deep Groove Ball Bearing 35×47×7 mm | 68 Series | Double Shielded Design

Engineered for space-constrained mechanisms that demand both high precision and built-in environmental protection. The internal raceways and rolling elements of the 6807-ZZ are safeguarded by twin steel shields, an intentional design that locks in premium grease for the entire lifespan of the component. It shares the exact 35 × 47 × 7 mm footprint as its open (6807) and sealed (6807-2RS) alternatives. While sealed bearings excel in heavy moisture environments at the cost of speed, the 6807-ZZ thrives in dry, moderately dusty applications where maintaining high RPMs and rapid heat dissipation are critical to system performance.

6807-ZZ Shielded Thin-Section Deep Groove Ball Bearing For Measurement Systems | 35×47×7 mm

Comprehensive Applications

The 6807-ZZ is the bearing of choice when a 35 mm shaft requires reliable, low-friction rotation within a highly restrictive housing space, particularly where external lubrication is not feasible:

Precision Robotics & Automation
  • Rotary joints and articulated arms in lightweight industrial robots.
  • Automated guided vehicle (AGV) internal drive mechanisms.
  • Compact servo motors and stepper motor assemblies.
Power Tools & Light Machinery
  • High-speed spindles in professional-grade power tools.
  • Internal shafts in portable packaging machinery.
  • Textile manufacturing equipment requiring lint-resistant bearings.
Optical & Measurement Systems
  • Gimbal stabilization platforms for cinematography and drones.
  • Rotary encoders and precision measurement turntables.
  • Telescope mounts and scanning equipment.
Hobbyist & Performance Vehicles
  • Drive shafts and gear hubs in large-scale RC models.
  • Lightweight steering columns and throttle bodies in automotive applications.

Key Performance Features

01. Maintenance-Free Shielded Protection

The integration of ZZ dual metal shields eliminates the need for ongoing lubrication maintenance. These pressed steel plates sit closely against the inner ring without making physical contact, effectively keeping dirt and debris out while keeping the factory-applied grease in. This makes the 6807-ZZ ideal for "fit-and-forget" consumer and industrial assemblies.

02. Low Rotational Torque for High Speeds

Because the steel shields do not physically rub against the inner ring (unlike rubber 2RS seals), the bearing experiences practically zero additional friction. This frictionless sealing allows the 6807-ZZ to effortlessly sustain operating speeds of up to 14,000 r/min, reducing energy consumption in battery-powered devices and preventing premature wear in rapid-cycling machinery.

03. Ultra-Slim Profile for Lightweight Engineering

The favorable bore-to-outer-diameter ratio (35 mm to 47 mm) allows mechanical designers to use robust, thicker drive shafts without sacrificing external space. The 6800 series thin-wall design dramatically cuts down the overall weight of the bearing, which is a decisive advantage for aerospace components, drones, and handheld industrial tools.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6800 Series
Basic Designation 6807
Suffix ZZ (Double Pressed Steel Shields)
Bore Diameter (d) 35 mm
Outer Diameter (D) 47 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
Dynamic Load Rating (Cʳ) 4.36 kN
Static Load Rating (C₀ʳ) 3.20 kN
Limiting Speed (Grease) ~14,000 r/min
Limiting Speed (Oil) -
Weight (approx.) 0.028 kg

Interchange Part Numbers

The 6807-ZZ can be universally cross-referenced with equivalent shielded models from premium global brands. Please note that exact suffix designations may vary slightly by manufacturer:

  • SKF: 61807-2Z
  • NSK: 6807ZZ
  • FAG (Schaeffler): 61807-2Z
  • NTN: 6807ZZ
  • KOYO: 6807ZZ
  • NACHI: 6807ZZ
  • Generic / Welink: 6807-ZZ, 61807-ZZ, 6807-2Z

Design & Configuration

The 6807-ZZ utilizes a Conrad-style, single-row ball configuration optimized for tight radial clearances. Its standout feature is the pre-lubricated, double-shielded construction that provides standalone environmental defense without relying on the surrounding housing. With dynamic and static load capacities of 4.36 kN and 3.20 kN respectively, it is highly capable of handling moderate radial loads and light axial loads. Due to its non-contact shielding, the bearing maintains high thermal efficiency and achieves grease-lubricated speeds approaching 14,000 r/min. If your application involves direct water exposure or heavy slurry, a 6807-2RS (rubber sealed) would be necessary. However, for dry, dust-prone environments where maintaining high speed and minimizing parasitic drag are paramount, the 6807-ZZ is the optimal engineering choice.

"When mechanical designs dictate a 35 mm shaft but radial space is strictly constrained, the 6807-ZZ thin-wall bearing provides the perfect balance of low friction and reliable contaminant protection. Its pre-lubricated, shielded architecture ensures maintenance-free longevity for high-speed motors, precision robotics, and lightweight tools."

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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.

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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
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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

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