Products/Equipment
Introduction of main products

A/T components
Spool valve Aluminum
Spool valve Aluminum
We produce this product overcoming the weak points of aluminum which are "sticky and soft" by using lead-free materials. We ensure completed film thickness of 30㎛ and surface hardness of Hv35 or higher for surface treatment to ensure enough resistance to wear against mating parts. External diameter and straightness/cylindricity have actual value of 2㎛.
Quality of materialA6061
DiameterPolishing section∅13/∅9.7
Overall length63mm
Surface treatmentHard alumite treatment
Surface roughness1.3Z
Spool valve Iron
Spool valve Iron
We process this product using six-spindle automatic lathe and pursue a differentiation from competitors by in-house tool layout. We can produce 450 pieces an hour. Furthermore, we remove grinding burrs generated after grinding using barrel machine and applying rustproofing after washing.
Quality of materialSUM22
DiameterPolishing section∅15/∅11.9
Overall length72.5mm
Surface treatmentCarbo-nitriding quenching and tempering
Surface roughness2.8Z
Check valve
Check valve
Check valve is our main product which allows passage of liquid in one direction and prevents the liquid from passing in the opposite direction. Because the surface roughness is precise, we perform internal diameter machining with NC lathe after spindling on six axes and assure you the roughness. We ship this product after implementing all four-hole processing and milling processing in a dedicated processing line.
Quality of materialSUM22
Diameter∅12
Overall length15mm
Surface treatment
Surface roughnessExternal 2.8Z/Internal 5.8Z
A/T solenoid component
Yoke
Yoke
This product is an important part that comprises of sleeve section of the A/T solenoid valve. We use chucker NC and machining center, etc., from forging materials of pure iron to finish up internal and external diameters. No processing is implemented after annealing because we do not want products to have magnetic properties as their function. We assure concentricity of internal and external diameters taking into account the dimensional changes of micron mark after processing and in longitudinal direction.
Quality of materialPure iron
Diameter∅26×∅16
Overall length30mm
Surface treatmentTufftride
Surface roughnessExternal 1.6Z
Spool valve Long
Spool valve Long
This product is used at hydraulic parts, moves in the axial direction, and comprises of hydraulic parts in the space between sleeves.
Quality of materialA6061
Diameter∅11
Overall length48mm
Surface treatmentNon
Surface roughness2.4㎛Rz
Plunger
Plunger
This product is contained in internal diameter part of solenoid yoke and slides repeatedly with high frequency. Therefore, we rigorously check for scratches and damages on products, setting the clearance to mating parts at 15?, and external diameter tolerance at 5? for a single unit. Since the product undergoes a final highly thick film plating, very strict requirements are met for each cutting. Furthermore, we pay full attention until the final treatment of products because these products are made of pure iron.
Quality of materialPure iron
Diameter∅11
Overall length31mm
Surface treatmentElectroless NIiP plating
Surface roughness1.3Z
A/T components
M/T shaft
M/T shaft
This product plays an important role in changing gears when M/T is in the reverse gear. We improved the process design including physical distribution of this product because it weighs over 600g, the heaviest product among our product line. We have configured our lines by utilizing turning center, machining center, and centerless from forge processing for one-by-one production that saves manpower as much as possible by introducing coupling robots, etc.
Quality of materialSCr20
Diameter∅55
Overall length84mm
Surface treatmentCarburizing quenching/tempering
Surface roughnessExternal 1.6Z
VCT components
Sleeve
Sleeve
There are about 30 different cross holes between ∅2 and ∅4.5. We minimized deburring process as much as possible and achieved cost reduction. This product is press-fitted from external diameter and comprises of oil grooves internally. 。
Quality of materialSUM43
Diameter∅14.5
Overall length50mm
Surface treatment-
Surface roughnessRa0.8
Actual machine component
Plunger
Plunger
This product is used in hydraulic shovels and comprises of solenoid operated control valve which is used in hydraulic pressure controller.
Quality of materialSCM415
Diameter∅20
Overall length43
Surface treatmentGas carburizing quenching
Surface roughness-
Shock absorber component
Housing
Housing
Piston slides inside the case where the piston is put in internal diameter to produce damping force. We process this product by deep extrusion using cold forging and perform net shape cutting.
Quality of materialSWCH45K
Diameter∅26
Overall length41
Surface treatment-
Surface roughnessRo1.5