





Founded in 2007, we are an integrated bearing manufacturer and trader. With nearly 20 years of professional production experience, we deliver reliable quality and professional customized solutions.
We are a professional manufacturer of slewing rings. With over 50 experienced staff, we ensure stable production capacity, strict quality control and efficient order response. We provide reliable customized solutions for various industrial applications.
Our factory covers a floor area of over 30,000 square meters, with complete production facilities and sufficient production capacity to support mass production and customized orders.
Our slewing bearings are widely exported to many countries and regions worldwide. We enjoy a good market reputation with consistent product quality and professional after-sales service.
Utilizes high-quality steel materials (such as 50Mn or 42CrMo), combined with an advanced raceway induction hardening process.
Optimized structural design, capable of withstanding high axial, radial, and overturning moments.
Backed by a robust R&D team, we support non-standard customization.
Each product unit possesses a unique identification number, and production data is traceable throughout the entire process.
Industry Trends, Headline News
EXHIBITION NEWS Join Us at Bauma CHINA 202626 Years of Precision in the Making November 24-27, 2026 | Booth N6.735 The countdown has begun! We are excited to announce that Anhui Yuanfeng Slewing Rings Co., Ltd. will be participating in Bauma CHINA 2026, Asia's premier trade fair for construction machinery, building material machines, mining machines, and construction vehicles. As we prepare for this year's event, we have been looking through our archives. From our early days to becoming a trusted partner for clients across more than 20 countries, these past exhibition photos remind us of how far we have come in our 26-year journey. Each handshake, every technical discussion, and each project explored at our booth has helped shape the precision manufacturer we are today. Our Exhibition Journey From Bauma to industry expos around the world -- meeting customers, showcasing quality. ◆ Visit Our Booth We cordially invite you to stop by Booth N6.735, meet our technical team, and discover how our latest manufacturing investments -- including our new 3-meter high-precision grinding capabilities and expanded heat treatment facility -- can support your next project. Event: Bauma CHINA 2026 Date: November 24 - 27, 2026 (Tuesday to Friday) Venue: Shanghai New International Expo Centre (SNIEC) Booth: N6.735 Opening Hours: 09:00 - 17:00 daily ◆ Why Meet Us at N6.735? Whether you are looking for a custom-engineered single-piece solution or a long-term strategic manufacturing partner, we treat every inquiry with the same dedication to quality that has defined Yuanfeng since our founding in 2007. At this year's Bauma CHINA, our team will be showcasing: Single-Row Four-Point Contact Ball Slewing Rings - 200mm to 5,000mm diameter, ideal for cranes and excavators Crossed Roller Slewing Rings - High rigidity for machine tool and robotic applications Three-Row Roller Slewing Rings - Maximum load capacity for heavy-duty applications Custom Solutions - Non-standard designs engineered to your specific load and dimensional requirements Come discuss how our "Zero Backlash" slewing ring solutions, precision-ground with Zeiss CMM inspection, can power your machinery with unmatched reliability. ◆ See You in Shanghai We can't wait to welcome old friends and meet new partners at Booth N6.735. Bauma CHINA 2026 promises to be the most exciting edition yet, and Yuanfeng is ready to make it our best showing ever. Mark your calendar, save the date, and come experience Chinese precision manufacturing at its finest. See you at N6.735! Schedule a Meeting at Bauma CHINA 2026 Let us know when you will be at the show and we will reserve time for a dedicated discussion. Email Us to Book a Meeting Editor & Layout: Daphne Hsu Anhui Yuanfeng Slewing Rings Co., Ltd. Precision slewing ring manufacturer since 2007 | ISO 9001:2015 Certified Email: office@ahyfeng.com / Daphne@ahyfeng.com | Web: www.ahyfeng.com | Tel: +86 18298009271/+86 13965019293
Industry Insight Major Heat / Da Shu July 23 - August 6: How Extreme Temperatures Test Slewing Ring Quality The 12th solar term and the hottest period of the year What is Major Heat ? It is the 12th solar term on the traditional Chinese calendar and the hottest period of the year, falling between July 22-24. In 2026, Da Shu begins on July 23, when the sun reaches 120 degrees of celestial longitude. The name tells the story: Da (great) + Shu (heat) - the peak of summer intensity. In Chinese tradition, this is a season described as "steaming above, boiling below" - a blend of scorching sun, oppressive humidity, and sudden thunderstorms. Ancient scholars compared the accumulated heat to a stove brought into a room: the warmth builds gradually, and by Major Heat the thermal inertia has reached its peak. For an industrial manufacturer, Major Heat is more than a calendar marker. It is a real operational stress test - one that affects material behavior, machining tolerances, and production schedules. At Anhui Yuanfeng, this season demands heightened attention across the entire production line. ◆ How Summer Heat Affects Slewing Ring Manufacturing Three challenges that intensify when the mercury rises 1. Thermal Expansion and Clearance Tolerances Steel expands with heat. For a slewing bearing with a 2,000 mm outer diameter, a 10-degree temperature swing can produce a dimensional change of roughly 0.14 mm - significant enough to shift internal clearance from the designed specification. During Major Heat, workshop temperatures can fluctuate by 15-20 degrees within a single day. A bearing fit measured in the cool morning hours may not represent actual operating conditions during the afternoon heat. How Yuanfeng responds: Critical measurements - raceway dimensions, gear pitch, and final clearance - are conducted in climate-controlled measuring bays. For tight-tolerance orders, we schedule final inspection during consistent thermal conditions and note the ambient temperature on the report. 2. Induction Hardening Consistency Induction hardening of the raceway surface relies on precise heating and quenching cycles. When workshop temperature climbs above 38 degrees Celsius, the cooling efficiency of the quenching medium can shift, potentially affecting hardened layer depth and surface hardness consistency. How Yuanfeng responds: Our heat treatment line monitors quenchant temperature in real time. During Major Heat, we increase hardness-gradient verification frequency - running Rockwell tests on every batch rather than every third batch. 3. Humidity and Corrosion Risk Major Heat brings extreme humidity. The "soil is moist and the air is muggy" - as the ancient description goes - is a warning for metalwork. During monsoon-like rainy periods, corrosion risk on machined steel surfaces increases significantly. How Yuanfeng responds: We apply temporary anti-rust oil earlier in the production flow, reduce inter-operation wait times, and monitor workshop humidity. Finished bearings get an additional protective layer when humidity exceeds 75 percent. ◆ The Wisdom of the Season The Chinese calendar divides Major Heat into three five-day phases: fireflies emerging from the grass, the earth becoming damp and muggy, and heavy rains arriving in succession. These ancient observations carry practical wisdom: extreme conditions, while challenging, prepare the ground for autumn harvest. In manufacturing, the same principle applies. High temperatures reveal stresses in materials and processes that remain invisible in milder conditions. A production line that performs reliably through Da Shu is one designed with safety margin, monitored with care, and operated with discipline. There is a traditional custom called "sending off the Major Heat boat" - launching a decorated vessel into the sea to dispatch summer heat and pray for a smooth harvest. For a manufacturer, this spirit of preparation - anticipating challenges before they arrive - is not a ritual but daily practice. ◆ Crew Well-Being in the Heat Extreme weather tests not only equipment but people. At our Hefei facility, summer workshops operate with adjusted schedules to avoid the most intense midday hours. Hydration stations are placed at every work area, and breaks are scheduled on a shorter cycle. Our heat treatment operators rotate in 45-minute shifts with dedicated cooling-down time - a practice we never compromise on. Major Heat is traditionally a time for fu tea - herbal infusions made from honeysuckle, prunella, and licorice. While we leave remedies to personal preference, the principle that working conditions should adapt to the season is one we take seriously. ◆ From Heat to Harvest Major Heat is the peak of the year warmth, but also the turning point. After Da Shu comes Li Qiu - the Beginning of Autumn. The ancient observation that "heat accumulates and does not rest" reminds us that every extreme is temporary, and that discipline maintained during the hardest conditions carries through to the harvest. At Anhui Yuanfeng Slewing Rings Co., Ltd., we treat every season as part of our quality process - because a bearing that performs reliably through summer worst heat is a bearing you can trust all year round. Editor & Layout: Daphne Hsu Anhui Yuanfeng Slewing Rings Co., Ltd. CE & ISO 9001 Certified Manufacturer Web: www.ahyfeng.com | Email: office@ahyfeng.com / Daphne@ahyfeng.com Tel: +86-18298009271 | +86 13965019293
🌿 Minor Heat / Xiao Shu The Heat Arrives - and So Does the Precision Xiao Shu 2026 | July 7 - July 22 Published: July 7, 2026 . Category: Industry Insights . By Yuanfeng Slewing Rings What is Minor Heat (Xiao Shu)? It is the 11th of the 24 traditional Chinese solar terms, falling on July 7 this year - the moment when summer heat begins to intensify, yet has not yet peaked. In Chinese farming wisdom, it is the season when the earth warms from within, and every living thing - crops, insects, and steel alike - responds to the rising mercury. For the industrial world, Xiao Shu is more than folklore. Rising ambient temperatures create measurable challenges in precision manufacturing, particularly in the production of slewing rings- the large-diameter bearings that enable rotation in excavators, cranes, wind turbines, and solar trackers. . . . How Does Heat Affect Slewing Ring Manufacturing? Thermal stability is not optional in slewing ring production - it is the difference between a bearing that lasts a decade and one that fails within 18 months. As workshop temperatures climb past 35 °C (95 °F), every stage of production, from raw steel storage to final assembly, demands heightened attention. Thermal Expansion and Clearance Tolerances A slewing ring with a 1,200 mm outer diameter expands by approximately 0.14 mm for every 10 °C rise. In a standard Xiao Shu day, the temperature on the workshop floor can swing from 26 °C at dawn to over 42 °C by mid-afternoon - a 16 °C delta that produces dimensional shifts large enough to alter raceway clearance and rolling-element contact patterns. This is why at Yuanfeng, we mandate climate-controlled final assembly for all slewing rings destined for solar-tracker and wind-energy applications, where field temperature variation is itself a design parameter. Heat Treatment Integrity Induction hardening and tempering - the processes that give slewing ring raceways their hardness (HRC 55-62) - are temperature-sensitive recipes. A workshop floor at 38 °C alters quenching-oil viscosity, cooling rates, and final hardness gradients. During the Xiao Shu period, Yuanfeng's QC team increases sampling frequency on hardness testing and dimensional inspection by 30 % to stay within ISO 9001:2015 and GB/T standards. ⚙ Yuanfeng's Heat-Season Quality Protocol > Pre-shift temperature logging in assembly and heat-treatment zones > Extended stabilization dwell for incoming steel stock (24 h in controlled environment before machining) > Increased lubrication intervals for CNC gantries and rotary tables > Coolant temperature monitoring in all grinding and turning operations > Staff rotation schedule to minimize afternoon fatigue risk . . . People Under Pressure: Heat-Season Workforce Management Behind every slewing ring lies a team of machinists, heat-treatment operators, and inspectors. The human body, unlike a CNC machine, has no built-in thermal management system rated for 40 °C continuous operation. During high-temperature periods, Yuanfeng adjusts workshop schedules to a 06:00-12:00 morning shift, allowing crews to complete the bulk of precision work before the day's peak heat, while ensuring electrolyte-enhanced drinking water at every station. This is operational discipline: a fatigued operator's measurement error at the grinding stage can scrap a ¥50,000 slewing ring blank. . . . Eating for the Heat: Traditional Wisdom for Modern Shifts 🥒 Eat Light, Stay Sharp - Bitter Gourd & Mung Bean Soup In traditional Chinese dietary therapy, Xiao Shu is the season to "clear heat and expel dampness" . A bowl of mung bean soup - beans boiled just until they crack, served at room temperature with a touch of rock sugar - replenishes fluids and electrolytes lost through sweat, without caffeine or excess sugar. Stir-fried bitter gourd with garlic drives out internal heat-dampness, leaving you clearer-headed for the afternoon shift. Mung bean soup - the shop floor's summer staple Winter melon - nature's coolant 🧊 A Playful Folk Remedy There's an old Chinese saying: "hug a winter melon and you'll sleep through the heat" . While we can't promise it beats air conditioning, the logic is sound - a winter melon's flesh is over 96 % water, making it noticeably cool to the touch. In traditional Chinese medicine it is classified as a cooling food that dispels summer dampness. Slice it into soup, stuff it with mushrooms, or simply keep one by your bedside - the winter melon is Xiao Shu's most versatile companion. 😄 . . . From Solar Terms to Supply Chains The 24 solar terms are thousands of years old, yet they still describe something real: the earth's rhythm, the predictable cycle of heat and cold, the stress nature applies to every structure - biological or mechanical - that stands in the sun. For a slewing ring manufacturer, Xiao Shu is a reminder that precision is never absolute - it is always relative to temperature, humidity, and the hands that set the dial. Understanding these relationships is what separates a bearing that merely meets spec from one that outlasts the machine it lives in. "Small Heat arrives; the cicadas sing; the steel holds its shape." Stay cool, stay precise. From all of us at Anhui Yuanfeng Slewing Rings Co., Ltd. - Happy Minor Heat. Built to rotate through every season - Yuanfeng slewing rings Editor & Layout: Daphne Hsu Anhui Yuanfeng Slewing Rings Co., Ltd.Hefei, China . ahyfeng.comEmail: office@ahyfeng.com / xudd@ahyfeng.comTel: +86 551-66392651 . WhatsApp: +86 18298009271Single-row / Double-row ball . Cross-roller . Three-row roller slewing rings
We are pleased to announce that a new batch of slewing rings for truck crane applications has completed production and is now awaiting assembly before delivery to our valued customer. These slewing rings are precision-engineered to withstand the demanding loads and continuous rotation required by modern truck-mounted cranes. Each unit has passed our rigorous quality inspection process, including dimensional verification, gear hardness testing, and smooth rotation checks. At Anhui Yuanfeng Slewing Rings Co., Ltd., we are committed to delivering reliable, high-performance slewing solutions for the material handling industry. From design to final inspection, every step reflects our dedication to quality and customer satisfaction. We look forward to the upcoming assembly and seeing these slewing rings in action. Safe lifting and smooth rotation!
On our production floor, a critical and meticulous step is currently taking place: our engineers are carefully loading high-precision steel balls into the raceway of a heavy-duty 2-meter slewing bearing. This specific component is custom-engineered for upcoming truck-mounted crane applications. Rather than a simple final assembly, the insertion of these rolling elements is the heart of the bearing's functionality. Truck-mounted cranes operate under extreme lifting conditions, demanding flawless rotation and immense load-bearing capacity. By meticulously assembling these steel balls into the precisely ground raceway, we ensure optimal load distribution. This minimizes friction and maximizes the stability and safety of the lifting equipment when handling massive loads. Every steel ball must fit perfectly to guarantee smooth, continuous operation. As we complete this vital step, we move closer to the final quality inspection and delivery. We remain fully committed to manufacturing top-tier slewing bearing solutions for global heavy machinery. Stay tuned for more updates from our workshop.
Another exciting update from our new factory! Our brand-new 3-meter grinding machine is taking its final shape—the team is currently installing its heavy-duty sheet metal enclosure (the protective outer shell). While the internal precision testing is complete, this sturdy outer shell is just as important. It keeps the workspace clean, ensures top safety for our team, and protects the machine's high-precision parts. Seeing this giant machine go from bare steel to a fully finished, professional workstation makes us incredibly proud of our nearly 20 years of growth. We are just a few steps away from pressing the "Start" button on this new production line. Stay tuned for more updates!
It is a busy, noisy, and happy day here at the factory. We just finished packing a new batch of bearings, and they are officially ready to head out to their new homes.It is the final step of a long journey, and it’s the one where we make sure everything is perfect before it leaves our sight. Our rule is pretty simple: treat every order like it is our first. We make sure the products are solid, the boxes are strong, and everything is wrapped up tight so it arrives exactly as it should. The truck is on the way! We can’t wait to see these parts get to work.
WE are thrilled to announce that our new factory building is officially completed! To kick off this new chapter, our latest investment—a 3-meter large-scale high-precision grinding machine—is now being moved into position. Why 3 meters? Because we are scaling up to meet the growing global demand for larger, high-performance slewing bearings. Stay tuned as we document the installation of this "heart of precision." ⚙️✨
Anhui Yuanfeng Slewing Rings Co., Ltd, founded in 2007, officially relocated to its new factory building on April 18, 2020. The new site covers over 30,000 square meters. It consists of one standard production workshop and another dedicated workshop for high-precision equipment and product research and development. The new layout greatly improves production capacity, R&D capability and overall operational efficiency, laying a solid foundation for the company’s long-term development in the slewing bearing industry. Looking forward to being your quality partner!
leave a message
Scan to Wechat :
Scan to Whatsapp :
