The manufacturing process for thrust tapered roller bearings is centered around “high axial load capacity + precise tapered surface fit.” Highly fatigue-resistant bearing steel is selected and vacuum-refined to remove impurities, ensuring matrix strength, toughness, and microstructure uniformity. The tapered raceways of the shaft and housing washers are precision-machined using five-axis CNC grinding machines, achieving a taper tolerance of ±5° and a surface roughness of Ra ≤ 0.1 μm. They undergo full quenching and tempering followed by cryogenic treatment to prevent dimensional deformation under heavy loads.
Roller machining requires multiple precision steps: cold heading to establish the tapered surface foundation, precision grinding to ensure precise fit with the raceway, and super-lapping of the end faces to achieve parallelism ≤ 0.001 mm. The cage is stamped or milled from steel plate, with precisely machined pockets to secure the rollers and prevent misalignment during operation.
Assembly is completed in a Class 1,000 clean workshop, and the axial clearance is adjusted by special tooling to ensure uniform contact of the conical surfaces. The finished product must pass axial static load testing, rotational wear verification, and precision testing and ultimately adapt to large axial load scenarios such as heavy machinery and machine tool spindles to achieve stable transmission with “high load capacity and anti-eccentric load.”
| model | d (mm) | D (mm) | B (mm) | rs (mm) | r1s (mm) | Ce (kN) | Co (kN) | Grease lubrication(r/min) | Oil lubrication(r/min) | (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 7303C | 17 | 47 | 14 | 1 | 0.6 | 1610 | 885 | 23000 | 30000 | 0.12 |
| 04C | 20 | 52 | 15 | 1.1 | 0.6 | 1890 | 1020 | 21000 | 28000 | 0.15 |
| 05C | 25 | 62 | 17 | 1.1 | 0.6 | 2690 | 1560 | 17000 | 23000 | 0.243 |
| 06C | 30 | 72 | 19 | 1.1 | 0.6 | 3290 | 2060 | 17000 | 23000 | 0.243 |
| 06C | 30 | 72 | 19 | 1.1 | 0.6 | 3290 | 2060 | 14000 | 19000 | 0.362 |
| 7307C | 35 | 80 | 21 | 1.5 | 1 | 3870 | 2400 | 13000 | 17000 | 0.475 |
| 08C | 40 | 90 | 23 | 1.5 | 1 | 4720 | 3000 | 12000 | 15000 | 1.675 |
| 09C | 45 | 100 | 25 | 1.5 | 1 | 6030 | 4050 | 10000 | 14000 | 0.875 |
| 10C | 50 | 110 | 27 | 2 | 1 | 7660 | 5260 | 9100 | 12000 | 1.14 |
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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.
