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CXE Bearings
S6006 -30x55x13mm- stainless steel bearing
S6006 -30x55x13mm- stainless steel bearing
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Bearing weight （kg）：0.12
Inner Diameter (mm) :30mm
Outer Diameter (mm) :55mm
Width (mm):13mm
Basic static load rating（N）:7460N
Basic dynamic load rating (N) :11900N
Grease selection
Grease selection
1. Hangu2-general purpose : (-20℃~+150℃）
2. FM222-Food-grade : (-20℃~+150℃）
3. XHP222-Water-resistant : (-20℃~+150℃）
4. Chevron SRI-2 Grease: (-30℃~+150℃）
5. SuperN-Long-lasting : (-50℃~+150℃）
6. Multemp SRL -low temp : (-50℃~+150℃）
7. Multemp SB-M-high speed/temp: (-40℃~+200℃）
Radial Clearance selection
Radial Clearance selection
The radial clearance values for this bearing model are as follows (in micrometers, um):
1. Why Do Bearings Need "Clearance"?
You might think that the tighter a bearing fits, the better it performs. However, that’s not the case. Bearings require a specific amount of internal clearance to handle two main issues:
Thermal Expansion: Bearings generate heat during operation, causing the metal components to expand. Without enough clearance, this expansion would cause the bearing to seize or "lock up."
Interference Fit: When a bearing is pressed onto a shaft, the inner ring stretches slightly. This physical expansion "consumes" a portion of the original internal clearance.
2. Bearing Clearance Ratings (ISO 5753)
Bearing clearance is typically categorized by the following common levels: C2, C0 (Normal), C3, and C4.
3. When to Choose C2, C0, C3, or C4?
The core logic for selecting a clearance grade is to predict how much "residual clearance" will remain while the bearing is running.
Once installed, the original clearance decreases due to the tight fit and thermal expansion. If the clearance is too small, the bearing will overheat and fail; if it is too large, it will cause vibration and eccentricity.
Here is a selection guide for different working conditions:
1. Choosing C2 (Small Clearance)
Goal: High precision and low vibration.
High Rotational Accuracy: For applications requiring the shaft to be perfectly centered with no "play."
Low Noise: To further suppress vibration in precision small motors.
Operating Conditions: Very precise (light) fits and minimal temperature rise during operation.
Common Applications: CNC machine spindles, small stepper motors, and office automation equipment.
2. Choosing C0 (Standard Clearance) — The Default
Goal: General-purpose balance.
Standard Conditions: Used when the inner ring and shaft have a standard fit, and the outer ring is not overly tight in the housing.
Moderate Temperature: The temperature difference between the bearing and the environment is within 30°C to 50°C
Common Applications: Home appliances, water pumps, gearboxes, and most general machinery.
3. Choosing C3 (Large Clearance) — The Industrial Standard
Goal: Accommodating thermal expansion and tight fits.
Interference Fits: Used when a tight fit is needed to prevent the inner ring from slipping on the shaft; the resulting "expansion" consumes the extra clearance.
High Heat / High Speed: Fast rotation generates friction heat, causing the balls and rings to expand rapidly.
Large Temperature Gradients: When the bearing's operating temperature is significantly higher than the housing temperature.
Common Applications: Industrial motors, automotive wheel hubs, AC compressors, and high-speed centrifuges.
4. Choosing C4 / C5 (Extra Large Clearance)
Goal: Extreme high temperatures.
High-Heat Environments: For bearings in kilns, industrial dryers, or papermaking machines where metal expansion is extreme.
Heavy Shock Loads: When heavy loads might cause slight shaft deformation.
Common Applications: Kiln cars, continuous casters, vibrating screens, and large power generators.
vibration acceleration-dB
vibration acceleration-dB
In the bearing industry, codes like Z1, Z2, and Z3 refer to the vibration acceleration levels of a bearing, which are commonly known as "noise levels."
To put it simply, these codes represent the magnitude of vibration produced by the bearing during operation: the higher the number, the lower the vibration, and the quieter the operation
ISO 15242 Vibration Grade
vibration velocity
vibration velocity
The vibration velocity values for this bearing model, measured in um/s according to the ISO 15242 standard, are as follows:
What is the V-Rating (Vibration Velocity)?
The V-Rating is a critical index for evaluating the overall quality of a bearing under the ISO 15242 standard. It measures vibration velocity (typically in um/s) while the bearing operates under specific speeds and loads to capture vibration energy across low-to-mid frequency ranges.
This rating serves as an international benchmark for operational smoothness. A higher V-Rating (such as V1, V2, or V3) indicates that the bearing has undergone rigorous and precise quality control. This includes:
Superior Raceway Geometry: Strict limits on roundness, waviness, and surface roughness.
High-Precision Components: Enhanced surface finish of the steel balls and minimized eccentricity (ovality) of the retainer/cage.
Exceptional Assembly: Higher rotational accuracy and cleaner internal environments.
In short, a higher ISO 15242 grade ensures that the bearing internal components are more precisely machined and assembled, resulting in quieter performance and a longer service life
S6006 Stainless Steel Bearing (30x55x13mm) Product Introduction
## Product Overview
The S6006 series deep groove ball bearing is a precision mechanical component with dimensions of **30mm bore, 55mm outer diameter, and 13mm width**. Manufactured from high-quality stainless steel, this product maintains all the mechanical properties of standard 6006 bearings while adding exceptional corrosion resistance, making it an ideal choice for humid environments, corrosive conditions, and applications requiring cleanliness.
## Standard Material and Customization Options
### Standard Configuration: AISI 420 Stainless Steel
This S6006 bearing model is **standardly manufactured using AISI 420 martensitic stainless steel**. AISI 420 is a martensitic stainless steel with relatively high carbon content. After appropriate heat treatment, it can achieve a hardness of HRC 50-55, offering:
- Good wear resistance
- Excellent corrosion resistance, suitable for general humid environments
- Good dimensional stability
- Cost-effective material selection
### Extensive Customization Material Options
Based on different application requirements, we offer customization services with the following stainless steel materials:
| Material | Characteristics | Suitable Applications |
|----------|-----------------|----------------------|
| **AISI 440 / 440C** | Highest hardness (HRC 58-62), best wear resistance, good corrosion resistance | High-load, high-wear applications, precision instruments |
| **AISI 304** | Austenitic stainless steel, excellent corrosion resistance, but lower hardness (non-hardenable) | Strong corrosive environments, low-load applications, food contact surfaces |
| **AISI 316** | Superior chemical corrosion resistance, excellent seawater resistance | Marine engineering, chemical equipment, pharmaceutical machinery |
## Technical Specifications
### Dimensions
- **Bore (d):** 30 mm
- **Outer Diameter (D):** 55 mm
- **Width (B):** 13 mm
- **Chamfer (r min):** 1.0 mm
- **Weight:** Approximately 0.11 - 0.12 kg
### Performance Parameters
- **Dynamic Load Rating (Cr):** 12,700 - 13,200 N
- **Static Load Rating (Cor):** 8,000 - 8,300 N
- **Limiting Speed (Grease Lubrication):** Approximately 8,000 - 9,000 RPM
- **Limiting Speed (Oil Lubrication):** Approximately 11,000 - 12,000 RPM
*Note: Specific values may vary slightly depending on the selected material and manufacturing tolerances*
## Structural Variants
The S6006 series bearings are available in various structural forms to meet different installation and usage requirements:
### S6006 (Open Type)
Without any seals or shields, suitable for:
- High-temperature environments (up to +150°C)
- Systems requiring external oil lubrication
- High-speed applications demanding extremely low rotational torque
### S6006-2RS (Double Rubber Sealed)
Equipped with double-sided nitrile rubber (NBR) contact seals, pre-filled with high-quality lubricating grease:
- Excellent dust and water resistance
- Maintenance-free design, ideal for locations difficult to lubricate regularly
- Operating temperature range: -30°C to +110°C
### S6006-2Z / ZZ (Double Metal Shields)
Equipped with double-sided stainless steel shields (non-contact):
- Prevents entry of large particle contaminants
- Extremely low frictional torque
- Suitable for high-speed operation
- Operating temperature range: -40°C to +150°C
## Engineering Considerations for Material Selection
Choosing the appropriate bearing material requires comprehensive consideration of the following factors:
### 1. Environmental Factors
- **General indoor use, occasional moisture exposure**: AISI 420 standard material is sufficient
- **Frequent washing, humid environments**: AISI 440C or 304 recommended
- **Seawater, strong acid/alkali environments**: AISI 316 must be selected
### 2. Load Characteristics
- **High loads, impact loads**: Prioritize high-hardness AISI 440C
- **Light loads, smooth operation**: Both AISI 304 or 316 are suitable
### 3. Temperature Requirements
- **High-temperature environments (>120°C)**: Open type or metal shield variants should be selected, paired with high-temperature lubricants
## Typical Application Fields
Thanks to the excellent characteristics of stainless steel materials and丰富的 customization options, S6006 bearings are widely used in:
- **Food Processing Machinery**: Conveyor belts, mixers, packaging equipment (AISI 304 or 316 recommended)
- **Medical Equipment**: Centrifuges, analytical instruments, surgical devices (AISI 440C recommended)
- **Marine Equipment**: Ship machinery, dock facilities, aquaculture (AISI 316 recommended)
- **Chemical Pharmaceuticals**: Reactors, mixers, filling equipment (AISI 316 recommended)
- **Outdoor Equipment**: Agricultural machinery, garden tools, cleaning equipment (AISI 440C recommended)
- **Precision Instruments**: Optical equipment, laboratory apparatus (AISI 440C recommended)
## Installation and Maintenance Recommendations
### Installation Points
- Apply force to the ring with interference fit during installation
- Avoid impact loads directly on the rolling elements
- Recommended shaft shoulder diameter not less than 35mm, housing shoulder diameter not greater than 50mm
### Maintenance Guidelines
- **Open bearings**: Regularly replenish lubricating grease according to the operating environment
- **Sealed bearings (2RS/ZZ)**: Pre-filled with grease at the factory, maintenance-free under normal usage conditions
- Storage environment should remain dry, with relative humidity <60%
## Quality Assurance
Our S6006 stainless steel bearings are manufactured strictly in accordance with the ISO 9001 quality management system, with precision grade reaching JIS Grade 0 (equivalent to ABEC 1 or higher). Each batch of products undergoes rigorous dimensional inspection and rotational accuracy testing, ensuring that every bearing delivered to our customers performs reliably.
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**S6006 30×55×13mm Stainless Steel Bearing** — Meeting diverse engineering challenges with multiple material options. Whether standard AISI 420 or customized AISI 440C, 304, or 316, we can provide the solution best suited to your application scenario.
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