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Help CenterDeep Groove Ball Bearing 6004-C3 Clearance for CNC Machinery
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As a leading manufacturer established in 2014, Henan San Kuang Machinery Technology Co., Ltd. leverages our 10,000-30,000 square meter facility and dedicated team of 51-100 professionals to produce precision components like the Deep Groove Ball Bearing 6004-C3. Engineered specifically for demanding CNC machinery applications, this bearing delivers exceptional reliability under high-speed operation and variable loads. Our commitment to quality, evidenced by certifications including ISO 9001, ISO 14000, and TS 16949, ensures every bearing meets rigorous international standards. With an annual export value of US$2.5 Million - US$5 Million to global markets like North America, Europe, and Southeast Asia, we understand the critical role dependable bearings play in your production efficiency.
Key Features & Technical Specifications:
Optimized C3 Radial Internal Clearance: Specifically designed with a greater-than-normal radial internal clearance (C3 grade). This is crucial for CNC machinery applications where operational heat generation causes bearing components to expand. The C3 clearance accommodates this thermal expansion, preventing excessive preload, reducing friction heat buildup, minimizing noise, and significantly extending bearing service life.
High-Precision Construction: Manufactured to exacting tolerances (ABEC 1/P0 standard or higher available upon request) for smooth, vibration-free rotation essential for CNC machining accuracy and surface finish quality.
Robust Chrome Steel Material: Made from high-carbon chromium steel (GCr15 equivalent), hardened and tempered for superior load-carrying capacity, wear resistance, and durability against the rigors of CNC operations.
Effective Sealing Options: Available with various sealing configurations (Shields: ZZ, 2RS, or open) to protect against contaminants like coolant mist, metal chips, and dust, while retaining lubrication.
High-Speed Capability: Precision-ground raceways and balls enable smooth operation at the high rotational speeds typical of CNC spindles and feed drives.
Versatile Mounting: Standard deep groove design allows for handling combined radial and axial loads, simplifying installation in diverse CNC machine configurations.
Technical Data Table:
| Parameter | Value | Unit |
|---|---|---|
| Designation | 6004-C3 | - |
| Inner Diameter (d) | 20 | mm |
| Outer Diameter (D) | 42 | mm |
| Width (B) | 12 | mm |
| Dynamic Load Rating (Cr) | 9.38 | kN |
| Static Load Rating (Cor) | 5.02 | kN |
| Limiting Speed (Grease) | 19000 | rpm |
| Limiting Speed (Oil) | 24000 | rpm |
| Weight (approx.) | 0.068 | kg |
Benefits for Your CNC Operations:
Enhanced Machine Uptime: Reduced risk of premature failure due to thermal seizure thanks to C3 clearance, minimizing costly production interruptions.
Improved Machining Precision: High running accuracy ensures consistent part quality and surface finishes.
Lower Operating Costs: Extended bearing life and reduced maintenance frequency translate to significant cost savings.
Reduced Vibration & Noise: Smoother operation contributes to a better working environment and protects sensitive machine components.
Reliability in Harsh Conditions: Sealed options provide robust protection against common CNC workshop contaminants.
Trust Henan San Kuang Machinery Technology for your critical bearing needs. Our established manufacturing capabilities, backed by ISO 9001, ISO 14000, and TS 16949 certifications, guarantee consistent quality and performance. We efficiently serve a global clientele across North America, Europe, Asia, and beyond, shipping reliably from major Chinese ports like Shanghai, Qingdao, and Tianjin. The 6004-C3 Deep Groove Ball Bearing embodies our commitment to providing durable, high-performance components that keep your CNC machinery running smoothly and profitably. Experience the difference precision engineering makes – contact us today for competitive pricing and reliable delivery.
Frequently Asked Questions (FAQ):
Q: Why is C3 clearance specifically recommended for CNC machinery bearings?
A: CNC spindles and drives generate significant operational heat. C3 clearance provides extra internal space to accommodate thermal expansion of bearing components, preventing binding, excessive friction, heat generation, and premature failure, ensuring reliable high-speed operation.Q: What lubrication is typically used in these 6004-C3 bearings?
A: They are commonly pre-lubricated with high-quality lithium-based grease suitable for high speeds and moderate temperatures. Specific grease type can be customized based on application requirements (e.g., higher temperature, food grade).Q: Can I use a standard clearance (C0/CN) bearing instead of C3 in my CNC machine?
A: Using a standard clearance bearing in a high-heat application like CNC machinery risks insufficient clearance once heated, leading to increased friction, overheating, excessive noise, vibration, and drastically reduced bearing life. C3 is strongly recommended.Q: What are the differences between ZZ (metal shields) and 2RS (rubber seals) for this bearing?
A: ZZ metal shields offer basic protection against large particles with minimal friction, ideal for clean environments or high speeds. 2RS rubber seals provide superior protection against fine dust, moisture, and coolant mist but introduce slightly more friction, potentially limiting very high speeds. Choose based on contamination level and speed requirements.Q: Are these bearings suitable for high axial loads?
A: While deep groove ball bearings can handle moderate axial loads in addition to radial loads, they are not primarily designed for heavy axial thrust. For applications with significant axial loads, consider angular contact ball bearings or thrust bearings.Q: What is the expected service life of this 6004-C3 bearing under normal CNC operating conditions?
A: Service life depends heavily on operating conditions (load, speed, temperature, contamination, lubrication). Under correct installation, adequate lubrication, and within rated load/speed, these bearings are designed for long service life, often exceeding 10,000 hours. Proper maintenance is key.Q: Do you offer different precision grades (e.g., ABEC 3, ABEC 5) for the 6004-C3?
A: Yes. While our standard offering meets ABEC 1/P0 tolerances, higher precision grades (ABEC 3/P6, ABEC 5/P5) are available upon request for applications demanding ultra-high running accuracy and minimum vibration.Q: What packaging options are available for bulk orders?
A: We offer various industrial packaging options, including plastic tubes (qty 25-50), bulk cartons, or customized packaging per customer requirements to ensure safe transit and storage.
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