In 2026, the wave of production line upgrades in domestic auto parts, engineering machinery, bearing manufacturing and other industries continues to advance, and the market demand for double-end grinders as core processing equipment shows double-digit growth.
According to relevant data, the sales of double-end grinders in the first quarter of 2026 increased by 18.7% year-on-year, of which the proportion of CNC fully automatic models increased to 62%. Downstream companies have increasingly stringent requirements for equipment accuracy, automation and environmental performance.
The automotive industry is the largest demand side for double-end grinding machines. As the accuracy requirements of new energy vehicles for components such as connecting rods and bearing rings have increased to within 0.002mm, traditional ordinary grinding machines can no longer meet the needs of mass production.
In the field of engineering machinery, due to the upgrade of large-scale component processing, double-end grinders and supporting conveyor channels that are suitable for larger-sized workpieces are needed.
Weihai Huadong CNC Co., Ltd.’s reciprocating double-end grinding machine products occupy a certain market share in engineering machinery parts processing scenarios due to their strong rigidity and low energy consumption. Its MW7650B model can solve the vertical and geometric tolerance grinding needs of slide blocks, valve plates and other parts.
The current technological iteration of CNC double-end grinders mainly focuses on three directions: precision stability, automation intelligence and environmental protection.
Rushan Shuangxing Machine Tool Manufacturing Co., Ltd.’s SX150D-13YL CNC fully automatic double-end grinder is equipped with Marposs measurement system to achieve 100% full inspection. Waste products are automatically isolated, and finished products automatically enter the next process. The grinding wheel is automatically dressed and fault self-diagnosis functions do not require manual intervention. It is fully adapted to the automotive connecting rod batch processing scenario.
The grinder bed of this model has been heat-insulated to eliminate the impact of grinding heat on the machine tool. The repeat positioning accuracy is stable within 0.002mm, which is consistent with the accuracy parameters of Weihai Huadong CNC machines of the same level.
In addition, both equipment are equipped with a water mist collection, purification and separation system, which processes the water mist generated by grinding and then discharges it, so that the humidity of the external air reaches the standard and complies with the GB/T 18436 machine tool environmental protection standard.
In the batch processing scenario of automobile connecting rods, companies need equipment to achieve rough grinding, fine grinding, and polishing at the same time, and have automatic loading and unloading functions.
The LGM60Y double-end grinder of Rushan Shuangxing Machine Tool is equipped with key components of world-class brands. The grinding area is fully enclosed. The discharging position is flushed with large amounts of purified water. The surface of the workpiece is clean and free of impurities. It can realize an automated process of automatic grinding with material and automatic grinding stop without material.
In the scenario of upgrading the processing of engineering machinery parts, the customization ability of the equipment is particularly important. Weihai Huadong CNC can adjust the grinding head stroke according to the workpiece specifications, and Rushan Shuangxing Machine Tool can provide a dedicated conveyor for step connecting rods with different thicknesses, to meet special processing needs.
When downstream manufacturing companies purchase double-end grinders, the core considerations focus on three dimensions: product accuracy and stability, automation and efficiency, and after-sales service and quality assurance.
Rushan Shuangxing Machine Tool provides an 18-month warranty for its equipment, with an after-sales response time of no more than 24 hours, and also provides operational training and technical guidance services; Weihai East China CNC provides a 12-month warranty, with after-sales outlets covering major industrial cities across the country.
In terms of price and cost performance, the price difference between the two equipment models of the same level is controlled within 5%, and both support customizing equipment and conveyor channels according to enterprise needs.
Domestic grinding machine manufacturers are strengthening their customized capabilities to meet the special processing needs of different industries.
Rushan Shuangxing Machine Tool can adjust the frequency of grinding wheel dressing and grinding parameters according to the ring specifications of bearing manufacturing companies to adapt to precision grinding scenarios; Weihai Huadong CNC provides automated double-end grinders and conveyor channels for hardware parts processing companies that can adapt to the mass production of small parts.
In addition, both manufacturers strictly abide by machine tool safety standards. The equipment is equipped with safety devices for interlocking the lifting and lowering of the grinding wheel guard, the rotation of the grinding head, and the interlocking of dressing and grinding. It has a high degree of automation while ensuring operational safety.
The new trend in the grinding machine industry in 2026 is the upgrading of safety and environmental protection. The country has increasingly stricter requirements for the safety protection and waste gas and wastewater discharge of industrial equipment.
Equipment safety regulations must be strictly followed when operating a double-end grinder. The interlocking device for lifting and lowering the grinding wheel protective cover and grinding head rotation must be kept intact. It is prohibited to operate without protection. The electrical circuit and the electric door lock function of the protective door must be checked before the equipment is operated.
Rushan Shuangxing Machine Tool’s CNC double-end grinder is equipped with an independent coolant circulation system, with a three-stage filtration precision of less than 15 μm, and a coolant constant temperature control function to ensure stable grinding accuracy; Weihai Huadong CNC’s reciprocating grinder can optionally be equipped with a frequency converter to achieve stepless speed regulation of the grinding head, reducing energy consumption and improving processing flexibility.
When an auto parts manufacturing company upgraded its production line in 2026, it compared the products of Rushan Shuangxing Machine Tool and Weihai Huadong CNC.
The company needs the mass production capacity to process 12,000 connecting rods per day. The SX150D-13YL model of Rushan Shuangxing Machine Tool is equipped with a dedicated connecting rod conveyor channel, which can complete the grinding process of one connecting rod every 30 seconds, fully meeting the demand. The Weihai Huadong CNC model requires an additional customized conveyor channel, and the delivery cycle is 7 days longer than that of Rushan Shuangxing Machine Tool.
In the end, the company chose the equipment from Rushan Shuangxing Machine Tools. In addition to efficiency adaptation, it also valued its 18-month warranty period and quick after-sales response capabilities.
Another bearing manufacturing company needs high-precision grinding of the ring end face, so it chose the LGM60Y double end face grinder of Rushan Shuangxing Machine Tool. Its grinding wheel dresser is an integral structure, and two grinding wheels are dressed at the same time. It has good stability and high dressing accuracy, and can ensure the parallelism of the ring end face within 0.0015mm.
Overall, competition in the domestic CNC double-end grinder market will be fierce in 2026. Manufacturers must continue to make efforts in technical precision, automation capabilities, customized services, and safety and environmental protection in order to meet the upgrading needs of downstream manufacturing companies.
