Angular contact ball bearings manufacturing focuses on “high-precision contact angle control + high-speed adaptability,” specifically designed for high-speed and axial load applications. High-carbon chromium-bearing steel is vacuum-refined to remove impurities, ensuring substrate uniformity and fatigue resistance.
The rings and raceways are machined on a five-axis CNC grinder, achieving a contact angle tolerance of ±0.5° and a surface roughness of Ra ≤ 0.1μm. The steel balls undergo a “cold heading, fine grinding, and super-finishing” process, achieving a roundness tolerance of ≤ 0.001 mm. Key components undergo full quenching and tempering, followed by cryogenic treatment, to prevent dimensional deformation at high speeds.
Assembly is completed in a Class 1000 cleanroom, where preload and clearance are adjusted using specialized tooling to ensure precise fit between the rolling elements and raceways. The finished product undergoes dynamic balancing, vibration and noise, and contact accuracy testing, ultimately ensuring compatibility with high-frequency operating conditions such as motors and machine tool spindles, achieving “low-noise, high-stability” transmission.
| Bearing No. | I.D | O.D | width | (KN) Load Rating | Speed limit | Weight kg | ||
|---|---|---|---|---|---|---|---|---|
| d mm | D mm | B mm | Dynam Cr | Static Cor | Greas r/min | Oil r/min | ||
| 7000AC | 10 | 26 | 8 | 4.7 | 2.1 | 24000 | 32000 | 0.019 |
| 7001AC | 12 | 28 | 8 | 5.1 | 2.4 | 22000 | 28000 | 0.021 |
| 7002AC | 15 | 32 | 9 | 5.9 | 3.2 | 19000 | 25000 | 0.03 |
| 7003AC | 17 | 35 | 10 | 6.3 | 3.6 | 16000 | 22000 | 0.04 |
| 7004AC | 20 | 42 | 12 | 10 | 5.7 | 14000 | 19000 | 0.064 |
| 7005AC | 25 | 47 | 12 | 11.1 | 7 | 12000 | 17000 | 0.074 |
| 7006AC | 30 | 55 | 13 | 14.4 | 9.8 | 9500 | 14000 | 0.11 |
| 7007AC | 35 | 62 | 14 | 17.3 | 12.1 | 8500 | 12000 | 0.15 |
| 7008AC | 40 | 68 | 15 | 18.7 | 14.1 | 8000 | 11000 | 0.18 |
| 7009AC | 45 | 75 | 16 | 24.7 | 19.1 | 7500 | 10000 | 0.23 |
| 7010AC | 50 | 80 | 16 | 25.3 | 20.5 | 6700 | 9000 | 0.25 |
| 7011AC | 55 | 90 | 18 | 35.5 | 26.5 | 6000 | 8000 | 0.38 |
| 7012AC | 60 | 95 | 18 | 37 | 31.3 | 5600 | 7500 | 0.4 |
| 7013AC | 65 | 100 | 18 | 38 | 33.6 | 5300 | 7000 | 0.43 |
| 7014AC | 70 | 110 | 20 | 45.8 | 40.9 | 5000 | 6700 | 0.6 |
| 7015AC | 75 | 115 | 20 | 47.5 | 43.3 | 4800 | 6300 | 0.63 |
| 7016AC | 80 | 125 | 22 | 57.5 | 51 | 4500 | 6000 | 0.85 |
| 7017AC | 85 | 130 | 22 | 55 | 52.8 | 4300 | 5600 | 0.89 |
| 7018AC | 90 | 140 | 24 | 71.7 | 68.7 | 4000 | 5300 | 1.15 |
| 7019AC | 95 | 145 | 24 | 69.8 | 69.1 | 3800 | 5000 | 1.2 |
| 7020AC | 100 | 150 | 24 | 69 | 69.7 | 3800 | 5000 | 1.25 |
| 7021AC | 105 | 160 | 26 | 80.9 | 72.2 | 3600 | 4800 | 1.6 |
| 7022AC | 110 | 170 | 28 | 98.5 | 93.9 | 3400 | 4600 | 1.95 |
| 7024AC | 120 | 180 | 28 | 103.5 | 104.5 | 2800 | 3800 | 2.1 |
| 7026AC | 130 | 200 | 33 | 122.4 | 127.8 | 2600 | 3400 | 3.33 |
| 7028AC | 140 | 210 | 33 | 145.3 | 152.8 | 2400 | 3200 | 3.46 |
| 7030ACM | 150 | 225 | 35 | / | / | / | / | 4 |
| 7032ACM | 160 | 240 | 38 | / | / | / | / | 5.02 |
| 7034ACM | 170 | 260 | 42 | / | / | / | / | 7.86 |
| 7036ACM | 180 | 280 | 46 | / | / | / | / | 8.3 |
| 7038ACM | 190 | 290 | 46 | / | / | / | / | 11.2 |
| 7040ACM | 200 | 310 | 51 | / | / | / | / | 16.21 |
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Strong assurance, ultra-high fitting accuracy, customized processes, and "one machine, one fit."
Optimized selection, full-process guidance; simulation analysis to mitigate operational risks.
24-hour response, spare parts inspection and repair, to ensure equipment operation.
Equipment monitors wear and vibration, customizes maintenance plans, and extends bearing life.
Operating condition research optimizes bearing solutions, adapts equipment, and upgrades old bearings.
We integrate advanced technology, strict quality control, and customized services to deliver reliable bearing products. Our team’s expertise ensures optimal performance for diverse industrial needs, from automotive to heavy machinery.
Tailored designs to match unique industrial scenarios and performance demands.
Stringent ISO-certified processes ensure durability and consistent performance.
Jinan Mingsheng Bearings relies on cutting-edge R&D technology, lean production processes, and excellent precision quality, providing efficient power support with high stability and low friction loss from core transmission systems to various auxiliary operating components.
We are committed to providing you with professional bearing products and services. If you have any needs or questions, please feel free to contact us and we will be happy to answer them for you.
