片岡機械製作所 List of Products and Services

Our company handles a range of products including "piston ring processing machines" such as lathe-type, milling-type, and grinding-type, as well as "overhauls and modifications" for repairs of malfunctioning parts, "cleaning equipment," "camshaft processing machines," and "crankshaft processing machines." We have an in-house integrated system that covers all processes from sales to design, processing, and assembly. We have delivered to 24 countries, with 85% of our sales coming from overseas and 15% from domestic markets. 【Main Clients】 ■ North America, South America, Central America, Europe, Oceania ■ Asia ■ Japan *For more details, please refer to the PDF materials or feel free to contact us.

• Grinding Machine
• Other processing machines
• Other machine tools

At Kataoka Machinery Manufacturing, we possess 20 core technologies that cater to a wide range of fields. We handle dedicated machines for piston rings, camshafts, crankshafts, and new market-specific machines, with a fully integrated in-house production system covering sales, design, processing, and assembly. Through unwavering development in pursuit of diverse and unique shapes, we aim to be a company trusted and loved by customers around the world. 【Business Description】 ■Manufacturing of dedicated machine tools for processing various engine parts *For more details, please refer to the PDF document or feel free to contact us.

• Engine parts
• Other processing machines
• Other machine tools

The piston rings and various seal rings we handle, as well as the dedicated machines for camshaft processing, are unique among processing machines. They realize elliptical and circular shapes through turning, grinding, and polishing processes, and due to their irregular shapes, advanced technology is required for the structure, function, and control of the machines. KATAOKA Engine aims to maintain a precise development stance in response to market demands, regardless of the era. 【KATAOKA Engine's Six Development Stances】 ■ Systematization ■ Intelligence ■ Multiplicity ■ Parallelism ■ Maximum Rigidity ■ Equalization Principle *For more details, please refer to the related links or feel free to contact us.

• Other processing machines
• Grinding Machine

Our company realizes cost reduction, productivity improvement, enhanced operability, and ensured safety through overhauls of existing machines, CNC retrofitting, and systemization. Utilizing established technology and rich experience, we conduct overhauls unique to manufacturers that improve machining accuracy and productivity, as well as enhance safety and operability. We revive outdated KATAOKA dedicated machines at minimal cost. Additionally, in CNC retrofitting, we perform overhauls of outdated KATAOKA dedicated machines and modernize control systems such as CNC at minimal cost. This is expected to yield investment benefits and clearly expresses KATAOKA's design philosophy based on recycling. Please feel free to contact us when needed. [Contents] ■ Overhaul ■ CNC Retrofit ■ Systemization *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

KATAOKA Engine is continuously developing specialized machines that are at the forefront of their time. As a result, in the field of piston ring processing specialized machines, we have commercialized various specialized machines for turning, grinding, and polishing piston rings for various engines, including motorcycles, passenger cars, large trucks, and ultra-large ships, totaling 85 models. In terms of camshafts, we have developed six models of cam milling machines for camshafts used in passenger cars, trucks, generators, and ships, and we are moving forward to meet customer demands with ambitious development similar to that of piston rings. Additionally, based on the technology we have cultivated over many years, we have commercialized five models of turning machines for various non-metallic special sealing rings, continuing product development with a total of 96 models. Even now, we are actively advancing concepts and designs to respond to requests for innovative specialized machines based on medium- to long-term perspectives from various industries. Illuminating a corner of the world... KATAOKA Engine wishes to continue this work in the future. *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

Kataoka Machinery Manufacturing Co., Ltd.'s camshaft machining dedicated machine was developed in 1992 following an unexpected inquiry from an Indian trading company, leading us into an unknown field. Although we were well-versed in piston rings, the lack of technology and know-how regarding camshafts made new development nothing short of a risk for our company. However, in response to our hesitant answer, Mr. Nagpur, the president of Cummins India, offered, "We will cover the development costs." Thus, applying the technology of elliptical machining, the camshaft machining dedicated machine was born. Our past achievements have been recognized, and we have received development requests from both domestic and international sources. The camshaft dedicated machine, which started for generators for the Indian trading company, has now expanded widely to applications for ships and passenger cars. Our challenge in an unknown field leading to new market development is a great source of pride for our company. *For more details, please refer to the related links. Feel free to contact us for more information.*

• Other processing machines

Kataoka Manufacturing Co., Ltd. received a request in 1998 from the Swedish company Dalos to develop a dedicated large ring turning machine for ships. Undeterred by the different manufacturing styles compared to Japan, we took on the challenge of development. We transformed "factory-intensive" processing machines into CNC, realizing customer needs with flexible ideas. Subsequently, we began the order development of the CNC fully automatic super-large piston ring inner and outer diameter cam turning and marking combined machine "VC-1100," yielding new results. Not only do we respond to customer needs, but we also realize proposals that go beyond expectations. This is our style of "undaunted development." *For more details, please refer to the related links. Feel free to contact us for more information.

• Other processing machines

At Kataoka Manufacturing Co., Ltd., we have proposed technological innovations from numerical control (NC) to CNC since the 1980s, even as the entire industry hesitated. Our technological innovation, "CNC," has achieved high quality and short delivery times for the processed products themselves, creating added value not only for manufacturers but also for users. The development of the "DCM-1" began with the request for "machines that are equivalent to or lower in price than mechanical control machines from Germany and Switzerland." Due to the global competition in the automotive industry, engine parts manufacturers are now faced with the challenge of improving quality while considering costs and increasing production speed. In line with the current trends of the times, Kataoka aims to develop more cost-effective dedicated processing machines. *For more details, please refer to the related links. Feel free to contact us for more information.*

• Other processing machines

The "DCM-1" is a semi-automatic composite machine that can perform turning processing with computer-controlled cam shapes for both the inner and outer diameters of rings, as well as gap milling processing, all in one unit. In turning, the processing program is automatically created, significantly reducing the time required for programming. By CNC-izing the cam copying mechanism, high-quality cam shape processing of various shapes can be carried out in a short time and at a low cost. 【Features】 ■ Can perform turning processing and gap milling processing in one unit ■ Significantly reduces the time required for programming ■ No need for troublesome angle and width adjustment work in milling ■ High-quality cam shape processing of various shapes can be carried out in a short time and at a low cost *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines

The "NRC-120" is a fully automatic lathe that simultaneously processes the inner and outer diameters of a single ring using a double-sided crimping method. Two forks arranged around the indexing device located at the center of the machine perform loading/unloading, turning, and marking simultaneously across three processing stations. In the turning processing station, the outer diameter is machined using the front slide and rear slide, while the inner diameter is machined using the inner diameter slide positioned beneath the tailstock. Marking is performed simultaneously with turning using either laser or milling, preventing any discrepancies between the shape and the marking. 【Features】 ■ Fully automatic processing of the inner and outer diameters of a single ring using a double-sided crimping method. ■ Loading/unloading, turning, and marking are performed simultaneously. ■ Marking is done simultaneously with turning using laser or milling, preventing discrepancies between the shape and the marking. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine tools

The "UPG-160" is a compact dedicated machine for piston rings that can perform grinding of various outer diameter shapes of rings fully automatically. It features V&V on the Z-axis of the grinding wheel slide and V&flat on the Y-axis sliding slide, combined with an oil hydrostatic grinding spindle, enabling high-quality finishing grinding. Additionally, by mounting two grinding wheels and performing shift grinding, it is possible to process complex shapes in a single operation, leading to improvements in production efficiency. 【Features】 - Equipped with both CNC through-formed dressing and diamond rolled dressing devices - Capable of fully automatic grinding of various outer diameter shapes of rings - Enables high-quality finishing grinding - Capable of processing complex shapes in a single operation - Achieves improvements in production efficiency *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The SCG-1 is a dedicated machine for camshafts that improves equipment investment efficiency in small-lot production by integrating processes. It is a specialized grinding machine that performs journal grinding, cam lobe grinding, and keyway milling at the shaft end for engine camshafts used in large trucks, construction machinery, and generators in a semi-automatic manner. It can consistently perform aggressive and high-quality machining. 【Features】 - Semi-automatic processing of journal grinding, cam lobe grinding, and keyway milling at the shaft end. - Hydrostatic design of ultra-precision high-rigidity special angular contact bearing supports and grinding cut-in slides of the double grinding slide unit. - Ability to consistently perform aggressive and high-quality machining. - Integration of processes allows for improved equipment investment efficiency in small-lot production. *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "VC-1100" is a dedicated machine for large piston rings that allows for the removal of leftover material and the setup of the next material during processing, thanks to its pallet changer. It is a compound lathe that automatically performs inner and outer diameter cam machining, outer diameter finishing, inner diameter chamfering, and core position marking for the subsequent milling process of ultra-large piston rings for ultra-large vessels. It continuously processes 12 inner and outer rings from cylindrical material and can stock them outside the machine using an unloader. 【Features】 ■ A compound lathe that automatically marks the core position for the milling process. ■ Continuously processes 12 inner and outer rings from cylindrical material and can stock them outside the machine using an unloader. ■ Allows for the removal of leftover material and the setup of the next material during processing with a pallet changer. ■ Programs are automatically created by simply inputting various conditions and data. ■ Enables shortening of delivery times, reduction of costs, and improvement of quality. *For more details, please refer to the PDF document or feel free to contact us.

• Other markings

KATAOKA has maintained the development and production of dedicated piston ring processing machines for nearly 50 years. The challenge to enter the niche market of developing dedicated machines for processing piston rings, which are critical components incorporated into engines for automobiles and ships, began in 1963 (Showa 38). Anticipating a new development in automotive parts manufacturing in Japan, we embarked on an endless journey of developing dedicated machines to achieve high quality, productivity, and cost reduction, continuing to develop and produce over 90 different models since then. In recent years, in response to new demands, we have started the development and production of dedicated machines for processing camshafts, automatic transmissions, and rotary engine sealing rings, leading us into new fields. "Unwavering Development" This is the unique banner that KATAOKA Engine proudly upholds and will never shy away from. KATAOKA Engine responds to customer requests with free and bold ideas that are not bound by conventional thinking, along with reliable technological development capabilities. For more details, please contact us or refer to our catalog.

• Other processing machines