Anhui KORBOR Machinery Co., Ltd.,, founded previously known as Ruian KORBOR Camshaft Manufacturing Co., Ltd. in 1999, was initially located in the automobile and motorcycle parts industry zone of Wenzhou, Zhejiang. It moved to Fuzhou, Fujian in 2005, and moved again to Anqing, Anhui in 2023, and was renamed Anhui KORBOR. Anhui KORBOR Machinery Co., Ltd., is China Wholesale DEUTZ Car Camshaft Suppliers And DEUTZ Car Camshaft Company. It is now located in Susong Economic Development Zone, covering an area of 28,000 square meters, with a plant area of 22,000 square meters, a registered capital of 11 million yuan (about US Dollar 1.4 million), and a total investment of over 100 million yuan. It is one of the top camshaft manufacturers in the country.
The camshaft is a key component in engine. We select high-performance alloys and use heat treatment processes, such as tempering, carburizing and quenching to significantly enhance the strength, hardness and wear resistance of the camshaft, ensuring performance in working environments.
With 25 years of innovation and experience, camshaft is our only focus. Anhui KORBOR Machinery Co., Ltd., is China Wholesale DEUTZ Car Camshaft Company. We have efficient production lines and strict quality management systems, achieving high-precision mass production and ensuring that every batch product has the same quality. We follow the IATF16949:2016 standard, maintain the "zero defect" production concept, implement multi-level and all-round quality control for every link in the production process, and win the favor of the global market with high cost performance and stable quality. With customers all over the world, we have established the strategic cooperation with many brands.
Our team is born for higher standards, and continuously iterating, so that every process contains innovative power. At present, our product covers more than 800 automotive and 600 motorcycle camshaft models. KORBOR provides you with mature technology and diversified solutions to help customers achieve greater success.
Meanwhile, we are committed to environmental protection, ensuring a healthy and safe working environment for employees by reducing waste generation, and requiring all partners in the supply chain to comply with strict environmental protection and labor standards. Regularly audit suppliers to promote the implementation of sustainable production methods throughout the entire chain.
From blank casting to finished products, KORBOR provide 1-stop service for each customer with reliable quality and punctual delivery time. Every year, we deliver more than 2.3 million sets of products to global customers and serve the market with professional capabilities. KORBOR is not only your trusted supplier, but also your ideal partner in the field of automotive and motorcycle engine camshafts. Let us work together to create quality with exquisite craftsmanship.
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Anhui KORBOR Machinery Co., Ltd. did not mention the key inspection indicators and standards for DEUTZ automotive camshaft maintenance in its introduction. The following are the key inspection indicators and corresponding general standards for DEUTZ automotive camshafts during maintenance under normal circumstances:
Wear degree
Cam surface wear: The cam surface of the camshaft is the part that directly contacts and produces relative motion with components such as valve tappets, and is prone to wear. Generally speaking, when the wear on the cam surface exceeds 0.2mm to 0.3mm, it is necessary to consider repairing or replacing the camshaft. Tools such as micrometers can be used to measure the diameters of different parts of the cam and compare them with the original design dimensions to determine the wear.
Journal wear: Wear also occurs at the joint between the journal and the bearing. The wear of the journal is usually allowed to be within the range of ±0.03mm to ±0.05mm. If it exceeds this range, it may cause problems such as oil leakage, reduced oil pressure, and unstable camshaft operation. During the inspection, the journal diameter can be measured and the clearance with the inner diameter of the bearing can be calculated for evaluation. The normal clearance is generally between 0.05mm and 0.12mm.
Deformation
Straightness: The straightness of the camshaft is an important indicator. It is usually required that the straightness error within every 100mm length does not exceed 0.01mm to 0.02mm, and the straightness error of the entire length does not exceed 0.05mm to 0.1mm. The camshaft can be placed on a V-block and measured with a dial indicator. The difference between the maximum and minimum readings of the dial indicator is the straightness error.
Distortion: For the camshaft of a multi-cylinder engine, the relative angle position between each cam should meet the design requirements. Generally, the distortion angle should not exceed ±1°. It can be measured with professional angle measurement tools or on specific testing equipment.
Hardness
The overall hardness of the camshaft should meet the requirements of its material and heat treatment process. Generally speaking, the hardness of the camshaft after quenching, tempering and other heat treatments is usually between HRC45 and HRC55. A hardness tester can be used to measure different parts of the camshaft at multiple points to ensure that the overall hardness is uniform and meets the standard.
The hardness of the cam surface and the journal should be slightly higher than other parts to improve wear resistance. Usually, the cam surface hardness should reach HRC50 or above, and the journal hardness should be above HRC48.
Surface quality
Roughness: The surface roughness of the camshaft has an important influence on its friction and wear with other components. Generally, the roughness of the cam surface and the journal surface is required to reach Ra0.8μm to Ra1.6μm. A roughness measuring instrument can be used for detection.
Surface defects: Check the camshaft surface with the naked eye or with the help of a magnifying glass, endoscope and other tools. Cracks, sand holes, pores and other defects are not allowed. If obvious cracks are found on the surface, the camshaft should be replaced regardless of size, because cracks may cause the camshaft to break during operation.
Oil channel blockage
The oil channel inside the camshaft is used to provide lubrication and cooling for the camshaft and bearings, so the oil channel should be kept unobstructed. This can be checked by oil channel pressure test. Under normal circumstances, under the normal operating oil pressure of the engine (generally 200kPa to 400kPa), the pressure loss in the oil channel should not exceed 50kPa. If the pressure loss is too large, it may indicate that the oil channel is blocked.
After disassembly, you can also use a special pipe clearing tool or compressed air to clear and check the oil channel to see if there are any debris, sludge or other blockages.
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