Ceramic Ball Bearing for Hand Spindles
Model NO.: 608
Separated: Unseparated
Delivery Time: In Stock
OEM Service: Available
Certificate: ISO9001
Inner Diameter: 8 mm
Outer Diameter: 22 mm
Width: 7 mm
Samples Order: Available
Application: High Speed Machines or Hand Spindles
Market: Worldwide
Warranty: 2 Years
Trademark: DEMEK
Transport Package: Single Box or Plastic Tube
Specification: Z1/V1, Z2/V2, Z3/V3
Origin: China
HS Code: 84821000
Overview of Deep Groove Ball Bearings:
Deep groove ball bearings are the most commonly used type of rolling bearings. They are suitable for a wide range of applications due to their design that allows them to handle both radial and axial loads. The raceway grooves on both the inner and outer rings have slightly larger radii than the balls, which makes them ideal for high-speed operations with minimal friction. These bearings are often available in open, shielded, or sealed configurations, and they can be pre-lubricated with grease. Some models may also include snap rings for additional support.
Key Features of Deep Groove Ball Bearings:
- Shield / Closure: Open, Z, ZZ, RS, 2RS, 2RZ
- Snap Ring: N, NR
- Tolerance: ABEC-1, ABEC-3, ABEC-5, ABEC-7
- Vibration Level: V4, V3, V2, V1
- Radial Play: C0, C2, C3, C4
- Material: GCR15
Variants of Deep Groove Ball Bearings:
- With one or two side rubber seals: RS, 2RS
- With one or two side metal shields: Z, ZZ (2Z)
- With a snap ring groove in the outer ring: N
- With a snap ring groove in the outer ring and an external snap ring: NR
Additional Part Numbers:
Below is a table showing various bearing dimensions and specifications:
| Boundary Dimensions (mm) | Basic Load Ratings (kN) | Limiting Speeds (rpm) | Mass (Kg) | Bearing Number |
|--------------------------|--------------------------|------------------------|-----------|----------------|
| d=20, D=47, B=14, rs min=1 | Cr=12.8, Cor=6.65 | Grease=16,000 | 0.106 | 6204-2RS |
| d=20, D=47, B=14, rs min=1 | Cr=12.8, Cor=6.65 | Grease=16,000 | 0.106 | 6204-2RSC3 |
| d=20, D=47, B=14, rs min=1 | Cr=12.8, Cor=6.65 | Grease=18,000 | 0.106 | 6204-RS |
| d=20, D=47, B=14, rs min=1 | Cr=12.8, Cor=6.65 | Grease=18,000 | 0.106 | 6204-RSC3 |
| d=25, D=52, B=15, rs min=1 | Cr=14, Cor=7.85 | Grease=13,000 | 0.128 | 6205-2RS |
| d=25, D=52, B=15, rs min=1 | Cr=14, Cor=7.85 | Grease=13,000 | 0.128 | 6205-2RSC3 |
| d=25, D=52, B=15, rs min=1 | Cr=14, Cor=7.85 | Grease=15,000 | 0.128 | 6205-RS |
| d=25, D=52, B=15, rs min=1 | Cr=14, Cor=7.85 | Grease=15,000 | 0.128 | 6205-RSC3 |
| d=30, D=62, B=16, rs min=1 | Cr=19.5, Cor=11.3 | Grease=11,000 | 0.199 | 6206-2RS |
| d=30, D=62, B=16, rs min=1 | Cr=19.5, Cor=11.3 | Grease=11,000 | 0.199 | 6206-2RSC3 |
| d=30, D=62, B=16, rs min=1 | Cr=19.5, Cor=11.3 | Grease=13,000 | 0.199 | 6206-RS |
| d=30, D=62, B=16, rs min=1 | Cr=19.5, Cor=11.3 | Grease=13,000 | 0.199 | 6206-RSC3 |
| d=35, D=72, B=17, rs min=1.1 | Cr=25.7, Cor=15.3 | Grease=9,800 | 0.288 | 6207-2RS |
| d=35, D=72, B=17, rs min=1.1 | Cr=25.7, Cor=15.3 | Grease=9,800 | 0.288 | 6207-2RSC3 |
| d=35, D=72, B=17, rs min=1.1 | Cr=25.7, Cor=15.3 | Grease=11,000 | 0.288 | 6207-RS |
| d=35, D=72, B=17, rs min=1.1 | Cr=25.7, Cor=15.3 | Grease=11,000 | 0.288 | 6207-RSC3 |
| d=40, D=80, B=18, rs min=1.1 | Cr=29.1, Cor=17.8 | Grease=8,700 | 0.366 | 6208-2RS |
| d=40, D=80, B=18, rs min=1.1 | Cr=29.1, Cor=17.8 | Grease=8,700 | 0.366 | 6208-2RSC3 |
| d=40, D=80, B=18, rs min=1.1 | Cr=29.1, Cor=17.8 | Grease=10,000 | 0.366 | 6208-RS |
| d=40, D=80, B=18, rs min=1.1 | Cr=29.1, Cor=17.8 | Grease=10,000 | 0.366 | 6208-RSC3 |
About Us:
We are a leading bearing manufacturer based in Wuxi City, China. With over 15 years of export experience, we specialize in producing high-quality bearings. Our production equipment is imported from Germany, ensuring our products meet European quality standards. Our brand, DEMEK, offers OEM services and custom non-standard bearings to meet our clients' specific needs. We welcome any inquiries and look forward to serving you.
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Boiler auxiliary equipment mainly includes water supply equipment, ventilation equipment, fuel supply, slag removal and dust removal equipment, steam and water pipes and accessories, detection instruments and automatic control equipment.
1. Water supply equipment
It is composed of water treatment equipment, water supply tank and feed pump 24. Water treatment equipment is used to remove impurities in water, such as oxygen, calcium and magnesium ions, to avoid scaling and corrosion on the inner wall of steam boiler, and to ensure the quality of boiler water supply. The treated boiler feed water is lifted by the feed water pump and then sent to the upper drum through the economizer.
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This is for conveying fuel to boiler, removing ash and purifying flue gas. Belt conveyor, ash conveyor, ash truck and dust remover, etc. For boilers that need to be pre processed with fuel, fuel preparation such as screening, crushing and coal grinding shall also be included. In addition, the dust remover or flue gas desulfurization and denitrification device installed in the flue at the tail of the boiler is an indispensable auxiliary equipment to reduce the smoke pollution and protect the environment.
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