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The 6004 Deep Groove Ball Bearing is a versatile single-row radial bearing engineered for high load capacity, low noise, and reliable performance in demanding industrial applications. Available in open, shielded (ZZ), and sealed (2RS) configurations, it offers flexible sealing solutions to suit various operating environments.
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The 6004 Deep Groove Ball Bearing is meticulously crafted to serve as the silent, unyielding core of your most critical machinery. When you hold this bearing, the reassuring weight of premium GCr15 steel and the flawless, mirror-like finish of its raceways speak volumes about its manufacturing pedigree. It is designed not merely to rotate, but to fundamentally optimize the kinetic efficiency of your electric motors, fluid pumps, and heavy-duty compressors. By drastically minimizing internal friction, this component reduces energy consumption and thermal buildup, directly translating to cooler operating temperatures and extended maintenance intervals for your equipment. The smooth, whisper-quiet operation—achieved through rigorous Z1 and Z2 noise control standards—eliminates disruptive vibrations that can compromise sensitive industrial assemblies. Whether deployed in agricultural machinery exposed to the elements or high-speed gearboxes requiring absolute precision, this bearing ensures your production lines maintain relentless momentum, safeguarding your operational uptime and driving long-term profitability.
Parameter | Value | Description |
Bearing Model | 6004 | Deep Groove Ball Bearing |
Inner Diameter (d) | 20 mm | Shaft diameter |
Outer Diameter (D) | 42 mm | Housing bore diameter |
Width (B) | 12 mm | Bearing width |
Chamfer (r min) | 1.0 mm | Minimum chamfer size |
Item | Specification |
Bearing Configuration | Single-row deep groove design |
Tolerance Classes | ABEC-1 / ABEC-3 / ABEC-5 |
Noise Control Level | Z1 / Z2 |
Sealing Arrangements | Open / ZZ / 2RS |
Bearing Steel | GCr15 / Stainless steel |
Cage Options | Steel cage / Nylon cage |
Lubrication Type | Grease-filled or oil lubricated |
Operating Temperature | -20°C to +120°C |
Load Type | Value |
Dynamic Load Rating (Cr) | Approx. 9.40 kN |
Static Load Rating (Cor) | Approx. 5.00 kN |
Values shown are typical reference data. Actual ratings may vary depending on clearance class, lubrication, and operating environment.
Bearing Version | Limiting Speed |
Open Type | ~19,000 RPM |
Metal Shield (ZZ) | ~15,000 RPM |
| Rubber Seal (2RS) | ~11,000 RPM |
6004 – Open bearing
6004ZZ – Double metal shielded
6004-2RS / 6004-2RS1 – Double rubber sealed
Engineered for uncompromising resilience, this bearing introduces a new standard of reliability to your mechanical systems. We focus on structural integrity and operational fluidity to solve the most common causes of premature equipment failure.
Frictionless Kinematics: The highly polished raceways and optimized ball geometries work in unison to deliver a silky-smooth rotation, significantly cutting down energy loss and preventing overheating during continuous operation.
Adaptive Environmental Shielding: Whether you are dealing with abrasive dust in construction yards or moisture in fluid handling systems, the versatile sealing options create an impenetrable barrier, locking in vital lubrication and keeping destructive contaminants out.
Acoustic Excellence: Manufactured to strict Z1 and Z2 noise levels, the bearing operates with a muted, refined hum, indicating perfectly balanced internal load distribution and enhancing the overall acoustic profile of your finished machinery.
Thermal Stability: Forged to withstand extreme temperature fluctuations from -20°C to +120°C, the metallurgical structure remains stable, preventing micro-expansions that could lead to seizing or catastrophic failure in high-heat environments.
Achieving perfect mechanical alignment begins with uncompromising dimensional accuracy. The 6004 bearing is manufactured to a strictly standardized profile, ensuring it drops flawlessly into your existing housing bores and onto standard shafts without the need for costly modifications.
Exact 20x42x12mm Profile: The 20 mm inner bore, 42 mm outer diameter, and 12 mm width are machined with microscopic precision, eliminating the risk of shaft slippage or housing distortion during heavy operation.
Optimized Chamfer Design: Featuring a minimum 1.0 mm chamfer, the edges are meticulously contoured to facilitate smooth, bind-free installation, protecting both the bearing and your assembly equipment from accidental scoring.
Universal Replacement Compatibility: Designed to adhere strictly to global industrial dimensional standards, this profile guarantees rapid, hassle-free replacement, minimizing expensive downtime during critical maintenance cycles.
The tactile superiority and extended lifespan of this bearing are direct results of uncompromising material selection and advanced metallurgical processing. We tailor the core materials to conquer the specific environmental demands of your industry.
Premium Alloy Selection: Choose between high-carbon GCr15 bearing steel for maximum load-bearing hardness, or premium stainless steel for unparalleled resistance to corrosive chemicals and moisture.
Advanced Heat Treatment: Our proprietary thermal tempering process alters the molecular structure of the steel, granting it exceptional fatigue resistance to endure millions of rotational cycles without micro-cracking or spalling.
Robust Cage Construction: Available with either a high-tensile steel cage for maximum structural rigidity under heavy vibration, or a lightweight nylon cage designed for high-speed, low-friction applications.
When your machinery is pushed to its absolute limits, the 6004 bearing stands as a bulwark against mechanical stress. It is engineered to shoulder substantial forces while maintaining an incredibly stable rotational axis.
Exceptional Load Ratings: Capable of handling a dynamic load (Cr) of approximately 9.40 kN and a static load (Cor) of 5.00 kN, it effortlessly supports heavy, continuous radial pressures without internal deformation.
High-Velocity Capabilities: The open configuration supports blistering speeds of up to 19,000 RPM, making it the ideal choice for high-velocity electric motors, power tools, and rapid-cycling automation equipment.
Energy-Efficient Operation: By maintaining exceptionally low internal friction even under maximum load and speed, the bearing reduces the power draw of your motors, contributing to a greener, more cost-effective operational footprint for your facility.
A bearing's operational lifespan is inextricably linked to its internal cleanliness and lubrication management. We offer a comprehensive suite of sealing and greasing solutions tailored to conquer the exact environmental challenges your equipment faces.
Versatile Sealing Architectures: Choose the Open type for clean, oil-bathed environments; the ZZ double metal shields for robust protection against larger particulates; or the 2RS double rubber seals for an airtight defense against fine dust and liquids.
Premium Lubrication Profiles: Pre-filled with high-grade grease or prepared for external oil lubrication, the internal cavity is optimized to maintain a consistent hydrodynamic film, preventing destructive metal-on-metal contact.
Application-Specific Greasing: Whether your application requires long-life synthetic grease for inaccessible machinery, high-temperature formulations for thermal processing equipment, or heavy-load pastes, the lubrication is customized to extend operational life.
We understand that off-the-shelf solutions rarely meet the nuanced demands of specialized industrial manufacturing. Our production lines are highly adaptable, offering deep customization to seamlessly integrate with your proprietary equipment designs.
Precision Class Selection: Tailor the runout and dimensional accuracy to your exact engineering needs with ABEC-1, ABEC-3, or ultra-precise ABEC-5 tolerance classes.
Internal Clearance Tuning: Select from C0, C2, or C3 internal clearances to perfectly accommodate specific thermal expansion rates and interference fits inherent to your machinery's operating environment.
Brand Integration: We offer precision laser marking to engrave your unique logos, part numbers, or QR codes directly onto the bearing rings, enhancing your brand visibility and simplifying your inventory tracking.
Tailored Packaging Solutions: From industrial bulk trays designed for automated assembly lines to individually sealed boxes for aftermarket distribution, our packaging adapts entirely to your logistical workflow.
Trust is built on consistency. Every 6004 bearing that leaves our facility is the culmination of rigorous, multi-stage inspection protocols designed to eliminate defects and guarantee uniform performance across massive production runs.
Acoustic and Vibration Testing: Each batch undergoes strict Z1 and Z2 noise level evaluations, ensuring that only the quietest, most perfectly balanced bearings make it into your critical applications.
Dimensional Verification: Advanced optical and laser measurement tools verify that every inner diameter, outer diameter, and width adheres strictly to the specified tolerances, preventing assembly line bottlenecks.
Fatigue and Destructive Testing: Sample units from every production cycle are pushed to their breaking points in simulated extreme environments, verifying that the metallurgical integrity and load capacities meet our stringent safety margins.
Optimizing your procurement strategy is just as important as optimizing your mechanical designs. By partnering directly with a source manufacturer, you unlock significant economic and logistical advantages that strengthen your market position.
Direct-Source Pricing: Eliminating intermediaries allows us to offer highly competitive pricing structures, significantly reducing your bill of materials (BOM) costs for large-scale production runs.
Scalable Production Capacity: Our expansive manufacturing footprint ensures that whether you need a few thousand units for a pilot run or millions for global distribution, your supply chain remains completely uninterrupted.
Lifecycle Technical Support: Beyond the physical product, you gain access to our engineering team for continuous consultation, assisting with application matching, failure analysis, and next-generation product development.
Selecting the right component supplier is a strategic decision that impacts every facet of your manufacturing success. We bring decades of specialized engineering expertise and a relentless commitment to your operational growth.
Unwavering Consistency: We utilize automated, state-of-the-art grinding and assembly lines that remove human error, ensuring the ten-thousandth bearing you receive is exactly as flawless as the first.
Responsive Agility: Our streamlined production planning allows for rapid prototyping and faster turnaround times on custom orders, helping you bring your new equipment to market ahead of the competition.
Global Export Expertise: With extensive experience navigating international shipping, customs documentation, and compliance standards, we ensure your inventory arrives on time and in pristine condition, regardless of your geographic location.
Partnership Mentality: We do not just fulfill orders; we actively collaborate with your procurement and engineering teams to identify cost-saving opportunities and performance upgrades across your entire product portfolio.
The C3 clearance provides a slightly larger internal gap between the balls and raceways compared to the standard C0 clearance. In high-temperature environments, the metal components of the bearing naturally expand. The C3 clearance accommodates this thermal expansion safely, preventing the bearing from seizing internally and ensuring smooth, uninterrupted rotation even under extreme heat stress.
A nylon (polyamide) cage is significantly lighter and possesses natural self-lubricating properties. This reduces the overall rotating mass and internal friction, making it highly advantageous for applications requiring rapid acceleration, high continuous speeds, and lower operating noise. It also performs exceptionally well in environments where slight misalignment might occur.
The 6004-2RS configuration is purposefully designed as a "sealed-for-life" unit. The double rubber seals permanently lock in the optimal amount of factory-applied premium grease while keeping all external contaminants out. This eliminates the need for manual re-lubrication, drastically reducing your ongoing maintenance costs and preventing common over-greasing issues that can blow out seals.
Higher ABEC classes (such as ABEC-3 and ABEC-5) indicate significantly tighter tolerances in the bearing's physical dimensions and rotational runout. For electric motors, this translates to improved shaft alignment, drastically reduced vibration, and lower noise levels. Ultimately, this precision extends the lifespan of both the motor's internal components and the driven equipment it powers.
GCr15 bearing steel is the industry standard, offering exceptional hardness, high load-bearing capacity, and excellent fatigue resistance for most general industrial uses. However, if your equipment operates in highly corrosive environments—such as food processing facilities, chemical plants, or marine applications—stainless steel is the superior choice to prevent rust and material degradation, ensuring sanitary and reliable operation despite having a slightly lower maximum load capacity.
