Stainless steel connecting sleeves/joints for automotive precision parts are core parts for precise connection and stable support of components in automotive power transmission, steering and braking systems. They are made of high-quality stainless steel materials such as 304 and 316L, and are manufactured through precision machining on CNC lathes, cold extrusion molding and polishing processes. Most of them are hollow tubular or stepped shafts, with an inner hole that has an interference fit with shaft parts, and external structures such as threads, slots, and sealing grooves, which are suitable for drive shafts, steering knuckles, brake calipers and other components of different specifications.
Core advantages | Technical highlights | Application value |
Super corrosion resistance | 316L austenitic stainless steel is selected, with a molybdenum content of ≥2%, and no rust after more than 2000 hours of salt spray test | Applicable to coastal and high humidity areas and automobile chassis and brake systems that are exposed to rain, snow, and cleaning agents for a long time, extending the service life of components |
High load-bearing and low wear | Tensile strength ≥520MPa, surface nitrided, hardness up to HV700, with precision ground inner hole (roughness Ra≤0.4μm) | Stable transmission of high torque power of engines and gearboxes, reducing friction loss between shafts and sleeves, and reducing maintenance costs |
High precision adaptability | Dimensional tolerance is controlled at ±0.008mm, cylindrical error ≤0.003mm, and customized interface design is supported | Accurately match the installation requirements of different models and different components to ensure zero gap assembly and improve system transmission efficiency |
Excellent high and low temperature performance | Working temperature range - 50℃ to 180℃, dimensional stability error <0.01% in extreme environments | Adapt to extremely cold and high temperature climates to ensure stable performance of automobiles in scenes such as northern snow and high temperature in deserts |
Lightweight and high strength | Thin-wall design is adopted, which reduces weight by 25% compared with traditional carbon steel sleeves while maintaining the same strength | Help to make automobiles lighter, reduce fuel consumption, and improve control flexibility |
Material and process
.Material selection:
304 stainless steel: excellent overall performance, containing 18% chromium and 8% nickel, suitable for general corrosive environments, such as oil and gas connection parts in the engine compartment.
316L stainless steel: added with molybdenum, with outstanding acid and alkali resistance and seawater corrosion resistance, often used in high corrosion risk parts such as chassis suspension and braking system.
.Processing technology: CNC multi-axis linkage processing technology is used to ensure high-precision molding of complex structures; the surface is mirror polished and passivated to improve the finish and corrosion resistance; some products are integrated through laser welding technology to achieve split structure integration and enhance overall strength.
Item | Specifications | Description |
Inner diameter range | Φ10 - Φ80mm | Covering the adaptation requirements of small sensor shafts to large transmission shafts |
Wall thickness range | 1.2 - 6mm | Customized according to load strength and pressure level |
Tensile strength | 520 - 780MPa | Meet the load requirements under different working conditions |
Surface hardness | HV550 - HV700 | Reduce wear and increase service life |
Protection level | IP67 optional | Applicable to harsh environments such as high dust and wading |
Application scenarios
.Power transmission system: used for connecting the engine crankshaft and flywheel, the gearbox input shaft and the drive shaft, ensuring efficient power transmission and reducing power loss and vibration.
.Steering system: installed between the steering gear and the steering tie rod, high-precision coordination ensures steering accuracy and improves driving control and safety.
.Braking system: adapted to the connection between the brake caliper and the brake disc, corrosion resistance and high strength characteristics ensure stable and reliable braking process and shorten the braking response time.
.New energy vehicles: used for the connection of motor rotor shaft and reducer gear shaft, lightweight design helps to improve vehicle range, while meeting the requirements of high speed and high torque conditions.
Headquarters tel.
E-mail.
China management center add.204, Building A, Phase 3, Jiewei Industrial Park, Shangmugu Community, Pinghu Street, Longgang District, Shenzhen, China
Headquarters tel.+86 134 3077 5139
E-mail.
CN
