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Help CenterHeavy-Duty Precision Bearing P4 Grade 60-80 HRC Chrome Steel Inner Dia 50mm C3 Clearance
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Henan San Kuang Machinery Technology Co., Ltd. is a professional manufacturer established in 2022, located in Luoyang, Henan, China. With a factory size of 10,000–30,000 square meters and 51–100 employees, we specialize in producing high-quality bearings for demanding industrial applications. Our Heavy-Duty Precision Bearing P4 Grade 60-80 HRC Chrome Steel Inner Dia 50mm C3 Clearance is engineered to deliver exceptional performance under extreme loads and high speeds. This bearing combines the robustness of chrome steel with precise manufacturing tolerances, ensuring reliable operation in critical machinery.
The bearing is crafted from premium chrome steel (GCr15) with a hardness range of 60–80 HRC, providing excellent wear resistance and long service life. The P4 grade precision ensures minimal runout and vibration, making it ideal for applications where accuracy and stability are paramount. The C3 clearance (greater than normal clearance) accommodates thermal expansion and high-speed rotation, reducing the risk of premature failure.
Key Features & Technical Specifications
- Material: High-grade chrome steel (GCr15) – ensures superior hardness and durability.
- Hardness: 60–80 HRC – optimized for heavy load applications and resistance to deformation.
- Precision Grade: P4 (ISO Class 4) – guarantees tight dimensional tolerances and low noise.
- Internal Clearance: C3 – allows for thermal expansion and high-speed operation.
- Inner Diameter: 50 mm – standard size for many industrial shafts.
- Heavy-Duty Design: Reinforced raceways and thicker rolling elements to withstand shock loads.
- Low Friction: Advanced surface finishing reduces torque and energy consumption.
- Versatile Application: Suitable for machine tools, gearboxes, pumps, compressors, and heavy machinery.
Technical Parameters (Typical Values)
| Parameter | Value |
| Inner Diameter (d) | 50 mm |
| Outer Diameter (D) | Available upon request (customizable) |
| Width (B) | Available upon request (customizable) |
| Dynamic Load Rating (Cr) | Depends on bearing series – contact us for details |
| Static Load Rating (Cor) | Depends on bearing series – contact us for details |
| Limiting Speed (Grease) | Optimized for high-speed applications |
| Cage Material | Steel cage (standard), polymer cage optional |
Benefits for Your Application
- Extended Service Life: The 60–80 HRC hardness and chrome steel construction reduce wear, even under continuous heavy loads.
- Enhanced Precision: P4 grade ensures minimal runout, improving machine accuracy and reducing vibration.
- Thermal Stability: C3 clearance prevents binding during temperature changes, allowing reliable operation in varying conditions.
- Cost-Effective: Lower maintenance frequency and longer replacement intervals save your operation money.
- Versatile Compatibility: Standard 50 mm inner diameter fits many common shaft sizes, reducing customization needs.
Trust & Reliability
Henan San Kuang Machinery Technology Co., Ltd. has achieved multiple certifications including ISO9001, ISO14000, OHSAS18001, SA8000, TL900, QS9000, HACCP, and others (refer to our company profile for full list). Our factory spans 10,000–30,000 square meters with a dedicated team of 51–100 skilled workers, and we export annually valued at US$2.5 Million – US$5 Million to markets across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major ports such as Shanghai, Lianyungang, Qingdao, and Tianjin, ensuring timely delivery.
We are committed to providing high-quality products that meet your exact specifications. Every bearing undergoes rigorous quality control checks to ensure it meets P4 grade and hardness requirements. Our technical team is available to assist with custom dimensions, special coatings, or packaging. Choose Henan San Kuang as your trusted partner for heavy-duty precision bearings.
Contact us today for a quote or to discuss your specific requirements. We look forward to supporting your business with reliable bearing solutions.
Frequently Asked Questions (FAQ)
-
What is the difference between P4 and P0 grade bearings?
P4 grade is a precision class with tighter tolerances (ISO Class 4), suitable for high-speed and high-accuracy applications. P0 is standard grade for general use. -
Can this bearing be used in food processing equipment?
While the bearing itself is chrome steel, additional seals or coatings may be required for food-grade applications. Please contact us for custom solutions. -
What is the maximum operating temperature for this bearing?
Chrome steel bearings typically operate up to 120°C. For higher temperatures, special heat treatment or alternate materials can be discussed. -
Do you offer other inner diameters or outer diameters?
Yes, we can customize dimensions based on your requirements. Minimum order quantities may apply. -
Is the C3 clearance suitable for all shaft fits?
C3 clearance is recommended for applications with thermal expansion or high speeds. For tight fits, standard clearance (CN) may be better. Consult our engineers for advice. -
How do I ensure the bearing is lubricated properly?
This bearing is supplied without lubrication (open type). You can apply grease or oil according to your operating conditions. We also offer pre-lubricated versions. -
What packaging options are available for export?
Standard export packaging includes anti-rust oil, plastic wrap, and carton/wooden crate. Special packaging (e.g., vacuum-sealed) is available upon request. -
Can I get a sample before bulk order?
Sample orders are welcome. Lead time and shipping costs will be communicated upon inquiry.
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