Core Technology
Heat Treatment
Ball Grinding
Ring Grinding
Automated Production
Heat Treatment
Standard TPI super-precision bearings are made from ultra-clean bearing steels. Through specific heat-treatment, followed by subzero treatment, the higher heat stability and longer service life is achieved with the result that the bearings can run permanently in many cases.
TPI has been investing many capital and resources in the purpose of crossover from radial bearings to precision bearings. In order to enhance bearings’ heat resistance and cycle life, in addition to use ultra clean steel, we also use special heat treatment to process bearings. By means of comparing data between indentation range and difference of bump volume, TPI bearing is superior to other Japanese brands.
Our machine for heat treatment process is mainly continuous furnace however in order to produce bearings for car transmission application, we also invested box furnace system. This not only helps to control quality but guarantee product stability and safety and also improve collision damages when produce large size bearings.
Recent years, to response environment friendly policy from government, TPI is continuously investing ORC system, heat recycle system, wind power system and solar power system. We hope this will be a contribution for global warming issue.
TPI has been investing many capital and resources in the purpose of crossover from radial bearings to precision bearings. In order to enhance bearings’ heat resistance and cycle life, in addition to use ultra clean steel, we also use special heat treatment to process bearings. By means of comparing data between indentation range and difference of bump volume, TPI bearing is superior to other Japanese brands.
Our machine for heat treatment process is mainly continuous furnace however in order to produce bearings for car transmission application, we also invested box furnace system. This not only helps to control quality but guarantee product stability and safety and also improve collision damages when produce large size bearings.
Recent years, to response environment friendly policy from government, TPI is continuously investing ORC system, heat recycle system, wind power system and solar power system. We hope this will be a contribution for global warming issue.
Ball Grinding
Precision steel balls are made in house and all of TPI ball precision class G10 guaranteed and G5 is optional on requests.
TPI produces steel balls and precision is the G10 class. Production history is traceable from raw material to finished product. Being quick response to expanding market demands from customers, we are supplying steel balls with stable quality and higher precision like G5 class. In addition to the same design and process from AKS, TPI keeps investing to improve manufacture process, quality, and precision as well as upgrade production capability. The main factor to affect durability is material and TPI uses ultra clean steel made from Japan for the purpose of providing a stable and durable product to customer. Recent years, TPI is aggressively to invest automated production in responding to the getting worse situation of low birth rate and outflow of talent. The taken measure is also helpful to stable quality, better precision, and assurance of delivery.
TPI produces steel balls and precision is the G10 class. Production history is traceable from raw material to finished product. Being quick response to expanding market demands from customers, we are supplying steel balls with stable quality and higher precision like G5 class. In addition to the same design and process from AKS, TPI keeps investing to improve manufacture process, quality, and precision as well as upgrade production capability. The main factor to affect durability is material and TPI uses ultra clean steel made from Japan for the purpose of providing a stable and durable product to customer. Recent years, TPI is aggressively to invest automated production in responding to the getting worse situation of low birth rate and outflow of talent. The taken measure is also helpful to stable quality, better precision, and assurance of delivery.
Ring Grinding
Standard TPI super precision bearings are manufactured to P4 class according to ISO 492:2002. P2 class is optional on request.
According to ISO 492:2002, TPI produces precision bearing in compliance with P4 class and we are capable to produce P2 level on request. The grinding machines are made from Germany and Japan specially designed for high precision and high rigidity. After grinding inner ring, we use automated inspection machine. Our manufacturing capability reaches Ppk 1.66 above and precision level control is using P2 level. The purpose is to make sure each bearing is made of P4 class and grinding precision for bearing can meet P2 class.
Grinding process is set as automation so it can achieve stable quality output and environment is set with temperature control to avoid measurement deviation resulting from temperature difference.
Spindle of a grinding machine for processing raceway of inner and outer rings for a bearing is with tens of thousands rpm. Precision is directly related to spindle vibration. Any minor unusual vibration will affect the precision after grinding. Therefore, we set surveillance system to monitor spindle vibration to assure production quality. This makes grinding process capability enhanced and yield rate for P4 class reaches 100%. When grinding inner and outer rings, if the diameter of grinding wheel is too big, high speed rotation will result vibration which is because of uneven wheel mass. We installed dynamic balance system as standard equipment for grinding wheel. This minimizes wheel spindle vibration and reduces vibration trace when grinding raceway.
According to ISO 492:2002, TPI produces precision bearing in compliance with P4 class and we are capable to produce P2 level on request. The grinding machines are made from Germany and Japan specially designed for high precision and high rigidity. After grinding inner ring, we use automated inspection machine. Our manufacturing capability reaches Ppk 1.66 above and precision level control is using P2 level. The purpose is to make sure each bearing is made of P4 class and grinding precision for bearing can meet P2 class.
Grinding process is set as automation so it can achieve stable quality output and environment is set with temperature control to avoid measurement deviation resulting from temperature difference.
Spindle of a grinding machine for processing raceway of inner and outer rings for a bearing is with tens of thousands rpm. Precision is directly related to spindle vibration. Any minor unusual vibration will affect the precision after grinding. Therefore, we set surveillance system to monitor spindle vibration to assure production quality. This makes grinding process capability enhanced and yield rate for P4 class reaches 100%. When grinding inner and outer rings, if the diameter of grinding wheel is too big, high speed rotation will result vibration which is because of uneven wheel mass. We installed dynamic balance system as standard equipment for grinding wheel. This minimizes wheel spindle vibration and reduces vibration trace when grinding raceway.
Automated Production
Both dimensions of inner rings and outer rings are automatically measured and matched to meet required dimensional and running accuracy.
