697 Deep Groove Ball Bearing

Product Description

The 697 Deep Groove Ball Bearing is meticulously engineered to provide frictionless rotation and exceptional structural integrity within highly constrained spatial environments. When integrated into micro-motors, automated conveyor systems, or precision robotics, the finely ground raceways and perfectly spherical rolling elements deliver a whisper-quiet operation that drastically reduces mechanical vibration. The tactile feel of the flawless metallic finish speaks to its rigorous heat-treatment process, ensuring a robust defense against abrasive wear and metal fatigue over countless rotational cycles. By eliminating excess friction, this highly responsive bearing actively lowers operating temperatures and minimizes energy consumption, allowing your end-stage machinery to run longer, cooler, and more efficiently.

Whether deployed in continuous-duty office equipment, sensitive medical devices, or high-speed precision instruments, the seamless interaction between the inner and outer rings guarantees a stable, wobble-free performance. This level of mechanical harmony prolongs the lifespan of your entire assembly, ultimately driving down maintenance downtime and optimizing overall operational productivity. The exacting craftsmanship behind every unit ensures that your final products operate with the premium, smooth-gliding sensation that end-users associate with top-tier engineering.

Bearing Dimensions (Standard)

Performance Parameters (Reference)

Load Ratings (Reference)

Note: Load ratings may vary slightly depending on bearing clearance, material selection, lubrication, and operating conditions.

Speed Limits (Reference)

Common Variants

• 697 – Open type

• 697ZZ – Double metal shields

• 697-2RS / 697-2RS1 – Double rubber seals

Key Features & Highlights

Securing the right motion components is critical to maintaining the operational integrity of your machinery. Our 697 bearings are designed to address the most demanding mechanical challenges, offering a synergistic blend of durability, speed, and precision. By integrating these bearings into your production lines, you immediately upgrade the reliability and market value of your final products.

• Friction Mitigation: Advanced raceway geometry minimizes rolling resistance, translating to lower power consumption and drastically reduced heat generation.

• Acoustic Excellence: Engineered to meet strict Z1 and Z2 noise thresholds, ensuring your end-user experiences a smooth, silent operation.

• Environmental Resilience: Multiple sealing options create an impenetrable barrier against microscopic dust particulates and moisture ingress.

• Thermal Stability: Capable of maintaining structural dimensions and lubrication efficacy in fluctuating temperatures ranging from -20°C up to +120°C.

• Maintenance Reduction: Pre-lubricated with premium grease or oil, dramatically extending the intervals between required servicing and part replacement.

Engineering Dimensions & Performance Metrics

Dimensional & Precision Standards

Achieving flawless assembly requires components with uncompromising dimensional accuracy. We provide a comprehensive range of precision grades from ABEC-1 through ABEC-5, allowing you to select the exact tolerance level required for your specific application. The strict adherence to the 7mm inner diameter, 17mm outer diameter, and 5mm width ensures a perfect interference fit every time, eliminating the friction and wear associated with poorly fitted components.

• Assembly Line Efficiency: Exacting tolerances eliminate the need for manual adjustments during installation, speeding up your production workflow.

• Vibration Eradication: Higher ABEC grades significantly reduce radial runout, preventing micro-wobbles in sensitive electronic devices.

• Consistent Batch Quality: Automated inspection protocols guarantee that every single unit matches the required dimensional profile.

• Scrap Rate Reduction: Perfect dimensional conformity means fewer rejected assemblies and lower material waste on your factory floor.

Core Materials & Heat Treatment

The foundation of any high-performance rotational component lies in its metallurgical composition. We utilize premium-grade Chrome Steel (GCr15) and high-corrosion-resistant Stainless Steel, subjecting them to a meticulously controlled heat treatment process. This creates a hardened surface layer capable of withstanding intense localized pressure while maintaining a tough, fracture-resistant core. The tactile smoothness of the metallic finish is a direct result of this advanced processing.

• Exceptional Wear Resistance: The hardened chrome steel resists surface spalling, extending the operational lifecycle even under continuous load.

• Corrosion Deflection: Stainless steel variants offer robust protection in humid or chemically aggressive environments, preventing premature oxidation.

• Structural Integrity: Advanced quenching and tempering eliminate internal material stresses, preventing micro-cracking during high-speed rotation.

• Heavy-Duty Reliability: The solid metallic structure ensures the bearing maintains its precise spherical geometry without deformation over time.

• Thermal Shock Resistance: The refined grain structure of the steel prevents warping when subjected to rapid temperature fluctuations.

Sealing Structures & Lubrication

Protecting the internal rolling elements from external contaminants is vital for long-term mechanical survival. We offer three distinct configurations: Open for ultra-high-speed oil baths, ZZ (Double Metal Shields) for dust deflection without added friction, and 2RS (Double Rubber Seals) for maximum protection against moisture and fine particulates. These options ensure that the bearing adapts perfectly to your specific environmental challenges.

• Contaminant Exclusion: The 2RS rubber seals create a tight lip against the inner ring, blocking liquid splashes and abrasive grit.

• Customized Lubrication: Available with specialized high-speed, low-noise, or high-temperature greases tailored to your specific operational environment.

• Frictionless Shielding: The ZZ metal shields provide excellent debris protection while allowing the bearing to reach maximum RPMs without thermal buildup.

• Lifetime Lubrication: Sealed and shielded variants are packed with the exact volume of premium grease needed for a maintenance-free lifespan.

Max Speed & Noise Control

In applications where rapid rotation and acoustic discretion are paramount, this bearing excels. The open configuration achieves an impressive 34,000 RPM, effortlessly driving high-velocity automation equipment. Simultaneously, the stringent Z1 and Z2 noise level controls ensure that this high-speed performance does not translate into disruptive auditory output, creating a smoother auditory environment for end-users.

• High-Velocity Capabilities: Precision-honed raceways allow the balls to glide effortlessly, supporting extreme RPMs without catastrophic heat accumulation.

• Acoustic Dampening: Optimized ball-to-raceway conformity drastically cuts down on the high-frequency whining commonly associated with inferior bearings.

• Vibration Isolation: The perfectly balanced rotational dynamics prevent kinetic energy from transferring into the surrounding machinery housing.

Load Capacity & Stability

Despite its miniature footprint, this component is engineered to bear substantial mechanical stress. With a dynamic load rating of approximately 1.95 kN and a static load rating of 0.78 kN, it provides an incredibly stable foundation for pulleys, guide wheels, and conveyor belt rollers that experience constant directional forces. This ensures your equipment remains operational even under unexpected mechanical duress.

• Dynamic Stress Distribution: The deep groove design allows the bearing to accommodate both radial and moderate axial loads simultaneously.

• Shock Absorption: The robust cage and optimized ball complement effectively absorb sudden mechanical shocks without indenting the raceways.

• Continuous Operation: High load thresholds mean the bearing will not overheat or seize when subjected to prolonged, heavy-duty operational cycles.

• Compact Strength: Delivers heavy-duty performance without requiring a larger housing, preserving your sleek, space-saving equipment designs.

Flexible Customization & OEM/ODM

We understand that off-the-shelf solutions rarely meet the nuanced demands of specialized machinery. Our comprehensive OEM and ODM services empower you to dictate the exact specifications of your bearings, from internal clearances (C0, C2, C3) to bespoke lubrication profiles, ensuring absolute alignment with your engineering blueprints and brand identity.

• Clearance Optimization: Select C3 clearance for high-temperature applications to accommodate thermal expansion without seizing.

• Brand Integration: Professional laser marking allows you to engrave your proprietary part numbers or logos directly onto the bearing shields.

• Tailored Packaging: We provide custom industrial packaging solutions designed to integrate smoothly into your automated inventory management systems.

• Engineering Collaboration: Our technical team works alongside your engineers to prototype, test, and validate performance prior to full-scale mass production.

• Material Adaptation: Choose between steel or nylon cages depending on your specific weight, speed, and acoustic requirements.

Supply Chain & Cost Efficiency

Securing a reliable component pipeline is just as important as the component itself. Operating as a direct manufacturer, we eliminate intermediary markups, providing you with premium-grade bearings at highly competitive price points. Our strict adherence to ISO manufacturing standards guarantees that every shipment is identical to the last, safeguarding your production schedules.

• Predictable Lead Times: Massive production capacity ensures your assembly lines never halt due to component shortages.

• Economies of Scale: Optimized manufacturing workflows allow us to pass significant cost savings directly to your procurement department.

• Consistent Reliability: Standardized quality control means you spend less time inspecting incoming goods and more time assembling your products.

• Strategic Partnership: We act as an extension of your own manufacturing ecosystem, adapting our output to match your seasonal demand fluctuations.

Why Choose Us

Partnering with the right supplier transforms your procurement process from a logistical challenge into a strategic advantage. We are dedicated to elevating your manufacturing capabilities through uncompromising quality, rapid responsiveness, and deep technical expertise. Our goal is to help you build better, faster, and more profitably.

• Unmatched Quality Assurance: Every single bearing undergoes rigorous acoustic, dimensional, and visual inspections before it leaves our facility.

• Deep Industry Expertise: Decades of experience engineering motion solutions for the medical, automotive, and consumer electronics sectors.

• Agile Responsiveness: A dedicated account management team ensures your technical queries and order modifications are handled with immediate priority.

• Global Compliance: All materials and processes strictly adhere to international environmental and safety directives, ensuring your end-products remain compliant.

• Long-Term Value: By reducing your defect rates and maintenance claims, our bearings actively improve your brand's reputation and bottom line.

• Custom Engineering Support: Direct access to our metallurgical and mechanical engineers to solve your most complex rotational challenges.

Frequently Asked Questions (FAQ)

Navigating the technical specifications of precision components can be complex. Below, we address the most critical questions our industrial partners ask to ensure they select the perfect bearing configuration for their specific mechanical requirements.

• What is the difference between the ZZ and 2RS sealing options for this model?
  The ZZ configuration utilizes double metal shields that prevent larger debris from entering while allowing for higher rotational speeds due to zero contact friction. The 2RS uses double rubber seals that make physical contact with the inner ring, providing superior protection against moisture and fine dust, though it slightly reduces the maximum RPM limit.

• How do I determine if I need C0, C2, or C3 radial clearance?
  C0 is the standard clearance suitable for most general applications. C2 offers a tighter fit, ideal for precision instruments requiring minimal vibration. C3 provides a larger internal clearance, which is essential if your equipment operates at high temperatures, allowing the metal components to expand safely without causing the bearing to seize.

• Can this bearing handle axial loads, or is it strictly for radial loads?
  Due to its deep groove geometry, this bearing is highly versatile. While primarily designed to support substantial radial loads, it can also accommodate moderate axial (thrust) loads in both directions, making it ideal for applications like electric motors and guide pulleys.

• Are these bearings pre-lubricated, and do they require maintenance?
  All our shielded (ZZ) and sealed (2RS) variants come pre-packed with the precise amount of high-grade lubrication needed for the entire lifespan of the bearing. They are designed to be completely maintenance-free. Open-type bearings, however, will require an external lubrication system such as an oil bath.

• What is the typical lead time for a customized OEM order?
  Standard configurations are usually available for immediate dispatch. For OEM orders requiring custom laser marking, specific grease fills, or non-standard clearances, our engineering team will finalize the prototype within a few days. Once approved, bulk production is rapidly scheduled to meet your precise delivery deadlines, ensuring your supply chain remains uninterrupted.