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The 6804 deep groove ball bearing is a compact, single-row radial bearing engineered for high-speed operation and reliable performance under moderate loads. It offers low noise, smooth rotation, and versatile sealing options, making it an ideal solution for precision machinery and industrial applications.
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The 6804 Deep Groove Ball Bearing is meticulously crafted to serve as the silent, unyielding core of your most critical rotary machinery. When you handle this bearing, the substantial weight of the premium GCr15 bearing steel and the flawless, mirror-like finish of the micro-polished raceways immediately communicate industrial-grade durability and uncompromising craftsmanship. In operation, it transforms erratic mechanical energy into a seamless, whisper-quiet rotation, effectively eliminating the harsh vibrations and grating noises that typically signal premature component wear and impending failure. By maintaining rigorous structural integrity under continuous, high-speed stress, this bearing directly resolves the costly issue of unexpected machinery downtime. Whether integrated into a high-velocity electric motor or a heavy-duty industrial fluid compressor, the precision-engineered internal geometry minimizes thermal expansion and eradicates rolling resistance. This means your equipment runs significantly cooler, consumes far less power, and requires drastically fewer maintenance interventions over its operational lifespan, ultimately driving down the total cost of ownership for your entire facility.
Parameter | Value | Description |
Bearing Model | 6804 | Deep Groove Ball Bearing |
Inner Diameter (d) | 20 mm | Shaft diameter |
Outer Diameter (D) | 32 mm | Housing bore diameter |
Width (B) | 7 mm | Bearing width |
Chamfer (r min) | 0.3 mm | Minimum chamfer size |
Item | Specification |
Bearing Structure | Single-row deep groove ball bearing |
Precision Grades | ABEC-1 / ABEC-3 / ABEC-5 |
Noise Level | Z1 / Z2 |
Seal / Shield Options | Open / ZZ / 2RS |
Material | GCr15 bearing steel / Stainless steel |
Cage Type | Steel cage / Polyamide cage |
Lubrication | Pre-greased or oil lubrication |
Operating Temperature | -20°C to +120°C |
Load Type | Value |
Dynamic Load Rating (Cr) | Approx. 5.50 kN |
Static Load Rating (Cor) | Approx. 2.60 kN |
Load values are reference data; actual performance may vary based on bearing clearance, lubrication type, and operational conditions.
Bearing Version | Limiting Speed |
Open Type | ~24,000 RPM |
Metal Shield (ZZ) | ~19,000 RPM |
| Rubber Seal (2RS) | ~14,000 RPM |
6804 – Open type
6804ZZ – Double metal shielded
6804-2RS / 6804-2RS1 – Double rubber sealed
Equipping your mechanical systems with our 6804 bearing translates directly to enhanced operational fluency and significantly extended service intervals. We have engineered this specific component to address the most demanding friction and load challenges found in continuous-duty industrial applications. The tactile smoothness of its rotation is a direct testament to the advanced micro-polishing techniques applied during manufacturing, ensuring that every single revolution is as efficient and stable as the first.
Friction Eradication: The highly refined raceway curvature significantly reduces rolling resistance, lowering energy consumption across your motor or drive systems and preventing heat accumulation.
Acoustic Management: Operating within stringent Z1 and Z2 noise thresholds, it eliminates the disruptive mechanical whine often associated with high-speed rotation, creating a safer auditory environment.
Thermal Resilience: Capable of maintaining dimensional stability across a broad thermal spectrum, it prevents catastrophic lock-ups even when subjected to the intense heat of continuous processing.
Vibration Dampening: The precise ball-to-raceway conformity absorbs micro-shocks, protecting sensitive adjacent components from vibration-induced metal fatigue and misalignment.
Our engineering approach focuses on delivering measurable improvements to your machinery. Below is a detailed breakdown of how this bearing performs across critical operational dimensions.
Achieving flawless mechanical alignment begins with exact dimensional conformity. This standard 20x32x7mm compact bearing is machined with uncompromising precision, featuring a 0.3mm minimum chamfer that facilitates smooth, binding-free installation into tight housing bores. By offering multiple precision tiers, we ensure your specific engineering tolerances are met without compromise.
Guaranteed ABEC-1, ABEC-3, and ABEC-5 grades to match your exact runout and concentricity requirements.
Eliminates shaft wobble and micro-misalignment, preserving the structural integrity of the entire drive train.
Streamlined drop-in replacement capability drastically reduces assembly line bottlenecks and maintenance time.
The physical endurance of a bearing dictates the lifespan of the machine it supports. By utilizing ultra-dense GCr15 bearing steel or premium corrosion-resistant stainless steel, this component offers a substantial, unyielding metallic structure capable of resisting intense surface fatigue. The rigorous, controlled heat-treatment process hardens the steel deeply, preventing the micro-spalling and pitting that quickly ruin lesser components.
Maintains structural rigidity and resists deformation in extreme temperatures ranging from -20°C to +120°C.
Deep-hardened matrix ensures exceptional wear resistance over millions of high-speed rotational cycles.
Stainless steel variants completely neutralize the threat of moisture-induced oxidation and chemical corrosion.
Environmental contamination is the primary adversary of mechanical longevity. To combat this, we provide tailored shielding solutions that act as an impenetrable fortress for the internal rolling elements. Whether your equipment operates in a pristine laboratory or a dust-choked processing facility, the right sealing configuration traps vital lubrication inside while locking destructive particulates out.
Open Configuration: Perfect for enclosed, oil-bathed environments requiring maximum rotational speeds up to 24,000 RPM.
ZZ Metal Shields: Deflects heavy metallic debris and airborne dust, maintaining pristine internal raceways without adding friction.
2RS Rubber Seals: Creates a hermetic, waterproof barrier that completely stops fluid ingress and prevents lubricant leakage in harsh conditions.
Industrial productivity relies on components that do not flinch under pressure. Engineered for both high-velocity and moderate-load scenarios, this bearing confidently handles a dynamic load rating of 5.50 kN and a static load of 2.60 kN. You can physically hear the difference as the refined acoustic ratings ensure a whisper-quiet operation even when pushed to blistering speeds.
Seamlessly manages combined radial and light axial loads without excessive heat generation or cage stress.
Prevents catastrophic cage failure during rapid acceleration and sudden deceleration phases.
Ensures consistent, uninterrupted power transmission, maximizing the output efficiency of your machinery.
Versatility is a critical metric for supply chain consolidation. The highly adaptable nature of this bearing makes it the definitive choice for a vast array of critical industrial sectors. By standardizing around this specific form factor, procurement teams can drastically simplify their inventory management while elevating the performance of multiple product lines simultaneously.
Serves as the silent, reliable powerhouse in small to medium electric motors and automotive alternators.
Provides the relentless, leak-free reliability required by industrial fluid pumps and high-pressure compressors.
Drives the smooth, continuous motion of automated conveyor systems, robotics, and precision tooling machinery.
Off-the-shelf solutions rarely meet the nuanced demands of specialized engineering projects. We offer a deeply integrated customization program that aligns the bearing's physical characteristics directly with your operational blueprints. From adjusting internal clearances to applying specialized lubricants, every parameter can be tuned to solve your specific mechanical challenges.
Selectable C0, C2, or C3 internal clearances to accommodate varying levels of thermal expansion and shaft fits.
Application-specific grease injection, including high-speed, low-noise, or extreme-temperature synthetic formulations.
Bespoke laser engraving and tailored packaging solutions to reinforce your proprietary brand identity and ease inventory sorting.
In today's competitive manufacturing landscape, securing a reliable, cost-effective component pipeline is paramount. As a direct manufacturer, we eliminate intermediary markups, delivering premium engineering at highly aggressive factory-direct pricing. This strategic sourcing advantage empowers your procurement department to significantly reduce bill-of-materials costs while ensuring uninterrupted production schedules.
Consistent volume manufacturing guarantees stable, on-time deliveries for large-scale production runs.
Eliminates redundant feature premiums, ensuring you only pay for the exact performance specifications your application requires.
Dedicated long-term supply agreements protect your operations from unexpected market shortages and price volatility.
Partnering with a proven manufacturer transforms a simple component purchase into a strategic operational advantage. We understand that your assembly lines cannot afford delays, and your brand reputation cannot survive component failures in the field. By maintaining absolute control over the metallurgical sourcing, precision machining, and final acoustic testing, we deliver a product that consistently exceeds international industrial standards. Our commitment goes far beyond the factory floor; we act as a dedicated extension of your own engineering and procurement teams.
Uncompromising Quality Control: Every single batch undergoes rigorous multi-point automated inspections, ensuring that the dimensional tolerances and load capacities you specify are exactly what you receive.
Scalable Manufacturing: Whether you are prototyping a new electric drive or ramping up for global distribution, our production facilities scale instantly to meet your volume requirements.
Engineering Support: Our technical specialists collaborate directly with your design team to recommend the optimal sealing, lubrication, and clearance configurations for your specific machinery.
Streamlined Logistics: We optimize global shipping routes and packaging protocols to ensure your inventory arrives pristine, organized, and perfectly on schedule.
Navigating the technical nuances of component selection is critical for optimal machine performance. Below, we address the most pressing engineering and procurement inquiries regarding this specific deep groove ball bearing to help you make an informed, confident sourcing decision.
Q1: How does the choice between ZZ and 2RS configurations impact the limiting speed of the bearing?
The sealing mechanism directly influences thermal friction. The ZZ (metal shield) offers a non-contact barrier, allowing for higher speeds up to 19,000 RPM with excellent dust deflection. The 2RS (rubber seal) creates a physical contact barrier for superior waterproofing, which introduces slight friction, safely limiting the maximum speed to 14,000 RPM.
Q2: Can this bearing accommodate axial loads in addition to its primary radial load capacity?
Yes. The deep, precisely honed raceway geometry of this single-row design allows it to comfortably manage moderate radial loads (up to 5.50 kN dynamic) while simultaneously supporting light to moderate axial loads in both directions, making it highly versatile for electric motor shafts.
Q3: What are the primary benefits of selecting a polyamide cage over a standard steel cage?
A polyamide (synthetic resin) cage significantly reduces the overall weight of the bearing and operates with inherently lower internal friction. This translates to quieter operation, better performance under rapid acceleration, and enhanced survival rates during marginal lubrication conditions compared to traditional steel cages.
Q4: How do you ensure consistent quality for high-volume procurement orders?
We employ automated, closed-loop CNC machining paired with laser-guided dimensional scanning on the production line. This guarantees that whether you order one thousand or one million units, every single bearing maintains the exact ABEC precision grade, chamfer dimensions, and runout tolerances specified.
Q5: Is it possible to specify a custom internal clearance (e.g., C3) for high-temperature applications?
Absolutely. For environments where the shaft and housing experience significant thermal expansion, we highly recommend and supply the C3 internal clearance option. This extra microscopic space prevents the rolling elements from binding as the metal expands under high operating temperatures up to +120°C.
