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R188 ZZThe R188 ZZ bearing is suitable for industries requiring high precision, such as precision instruments, small motors, medical devices, office equipment, automated robotics, household appliances, electronic devices, model toys, and optical equipment. Its miniature design and high reliability meet the needs of light-load, high-speed applications.
Product structure:
The R188 ZZ bearing has an inner diameter of 8mm, outer diameter of 12.7mm, and width of 3.175mm. It features a deep groove ball structure with metal shields on both sides (ZZ type). Made of stainless steel (e.g., AISI 440C), it typically uses nylon or stamped steel cages and follows C0 clearance standards. Compact and dust-resistant, it is ideal for installations in confined spaces.
Key performance features:
1. High Precision & Low Noise: Precision grinding ensures smooth and quiet operation.
2. Dust Protection: ZZ metal shields effectively block dust and contaminants, extending service life.
3. Corrosion Resistance: Stainless steel construction suits damp or mildly corrosive environments.
4. High-Speed Capability: Optimized raceway design supports speeds up to thousands of RPM.
5. Light-Load Efficiency: Low friction coefficient reduces energy consumption, ideal for precision transmission.
Main application scenarios:
Commonly used in micro-motor spindles, drone gimbals, printer rollers, medical pumps, precision gearboxes, robotic joints, optical fiber equipment rotating parts, measuring instruments, and digital camera lens focus systems. Ideal for motion components requiring dust protection, low maintenance, and miniaturization.
Technical Specifications and Requirements
Dimension Standards: Complies with ISO 1224-1 or ABEC-1 (and above) precision grades.
Load Capacity: Dynamic load ~1.2 kN, static load ~0.5 kN (refer to manufacturer data).
Temperature Range: -30°C to +120°C (stainless steel); grease must match temperature requirements.
Lubrication: Pre-lubricated with general-purpose lithium grease; customizable upon request.
Installation Requirements: Avoid impact or eccentric loading; recommend using professional pressing tools.
Quality Standards: Pass vibration, noise, and rotation accuracy tests; compliant with RoHS environmental directives.
Inch Size Miniature Ball Bearings inner diameter 1.984-38.1mm / 英制微型系列轴承内径1.984-38.1mm
| 内径 | 外径 | 高度 | 倒角 | 基本 | 基本 | 极限转速 | 型号 | |||
| 动负荷 | 静负荷 | Limiting Speed | (Reference) | |||||||
| (D) | (D) | 开放型 | 防尘盖型 | (r) | Cr(N)Basic | Cor(N)Basic |
润滑脂 (Grase) |
润滑剂 (Oil) |
开放型 | 防尘盖型 |
|
(B) (Open) |
(B1) (Shield) |
Dynamic | Static | *1000rpm | (Open) | (Shield) | ||||
| 1.984 | 6.35 | 2.38 | 3.571 | 0.1 | 310 | 108 | 67 | 80 | R1-4 | R1-4ZZS |
| 2.38 | 4.762 | 1.588 | 2.38 | 0.1 | 188 | 60 | 80 | 95 | R133 | R133ZZS |
| 7.938 | 2.779 | 3.571 | 0.15 | 550 | 175 | 60 | 71 | R1-5 | R1-5ZZS | |
| 3.175 | 6.35 | 2.38 | 2.779 | 0.1 | 283 | 95 | 67 | 80 | R144 | R144ZZ |
| 7.938 | 2.779 | 3.571 | 0.1 | 550 | 180 | 60 | 67 | R2-5 | R2-5ZZ | |
| 9.525 | 2.779 | 3.571 | 0.15 | 640 | 225 | 53 | 63 | R2-6 | R2-6ZZ | |
| 9.525 | 3.967 | 3.967 | 0.3 | 630 | 218 | 56 | 67 | R2 | R2ZZ | |
| 12.7 | 4.366 | 4.366 | 0.3 | 640 | 225 | 53 | 63 | R2A | R2AZZ | |
| 3.967 | 7.938 | 2.779 | 3.175 | 0.1 | 360 | 149 | 53 | 63 | R155 | R155ZZS |
| 4.762 | 7.938 | 2.779 | 3.175 | 0.1 | 360 | 149 | 53 | 63 | R156 | R156ZZS |
| 9.525 | 3.175 | 3.175 | 0.1 | 710 | 270 | 50 | 60 | R166 | R166ZZ | |
| 12.7 | 3.967 | 4.978 | 0.3 | 1300 | 485 | 43 | 53 | R3 | R3ZZ | |
| 15.875 | 4.978 | 4.978 | 0.3 | 1310 | 485 | 43 | 53 | R3A | R3AZZ | |
| 6.35 | 9.525 | 3.175 | 3.175 | 0.1 | 375 | 173 | 48 | 56 | R168 | R168ZZS |
| 12.7 | 3.175 | 4.762 | 0.15 | 1080 | 440 | 40 | 50 | R188 | R188ZZ | |
| 15.875 | 4.978 | 4.978 | 0.3 | 1610 | 660 | 38 | 45 | R4B | R4BZZ | |
| 15.875 | 4.978 | 4.978 | 0.3 | 1480 | 615 | 38 | 45 | R4 | R4ZZ | |
| 19.05 | 5.558 | 7.142 | 0.4 | 2340 | 885 | 36 | 43 | R4A | R4AZZ | |
| 7.938 | 12.7 | 3.967 | 3.967 | 0.15 | 540 | 276 | 40 | 48 | R1810 | R1810ZZS |
| 9.525 | 22.225 | 5.558 | 7.142 | 0.4 | 3350 | 1410 | 32 | 38 | R6 | R6ZZ |
| 15.875 | 3.967 | 3.967 | 0.4 | 815 | 411 | 28 | 31 | R1038 | R1038ZZ | |
| 12.7 | 19.05 | 3.967 | 3.967 | 0.4 | 898 | 524 | 21 | 26 | R1212 | R1212ZZ |
| 28.575 | 6.35 | 7.938 | 0.4 | 3930 | 2230 | 24 | 29 | R8 | R8ZZ | |
| 15.875 | 34.925 | 7.144 | 8.731 | 0.8 | 4620 | 2790 | 36 | 40 | R10 | R10ZZ |
| 19.05 | 41.275 | 7.938 | 11.113 | 0.8 | 7240 | 4463 | 41 | 43 | R12 | R12ZZ |
| 22.225 | 47.625 | 9.525 | 12.7 | 0.8 | 7740 | 4960 | 40 | 42 | R14 | R14ZZ |
| 25.4 | 50.8 | 9.525 | 12.7 | 0.8 | 7740 | 5160 | 38 | 45 | R16 | R16ZZ |
| 28.575 | 53.975 | 9.525 | 12.77 | 0.8 | 10180 | 6910 | 28 | 45 | R18 | R18ZZ |
| 31.75 | 57.15 | 9.525 | 12.7 | 0.8 | 10800 | 7520 | 28 | 33 | R20 | R20ZZ |
| 34.925 | 63.5 | 11.112 | 14.288 | 0.8 | 12280 | 8500 | 30 | 38 | R22 | R22ZZ |
| 38.1 | 63.5 | 11.112 | 14.288 | 0.8 | 14350 | 10240 | 32 | 40 | R24 | R24ZZ |
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宁波轴心国际贸易有限公司成立于2025年，总部位于中国东部沿海开放城市宁波，专注轴承及五金配件领域的技术开发与全球销售。依托母公司雄厚的制造基础——12000㎡现代化生产厂房、70+自动化产线、100+专业技术团队，10+年精密制造经验，并通过ISO/RoHS/CE认证，产品广泛应用于家电、食品机械、健身器材、电动工具、机动车辆、医用器械 企业核心优势：
| Model（型号）: | R188 |
| Shield（防尘盖）: | ZZ |
| Precision Rating（精度等级）: | P5 |
| d（内径）: | 6.35 |
| D（外径）: | 12.7 |
| B1（高）: | 4.762 |
| Material（材料）: | GCr15铬钢 |
| Lubrication（润滑方式(定制)）: | 联系客服Contact Customer Service |
| r（倒角）: | 0.15 |
| Cr (N) Basic Dynamic（基本动负荷）: | 1080 |
| Cor (N) Basic Staticc（基本静负荷）: | 440 |
| Limiting Speed Grase（极限转速润滑脂）*1000rpm: | 40 |
| Limiting Speed Oil（极限转速润滑剂）*1000rpm: | 50 |
| Patents: | True |
| Standard Type: | Standard parts |
