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  5. Processing Contract
  6. Machining of gray cast iron and ductile cast iron.

Machining of gray cast iron and ductile cast iron.

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last updated:Jul 24, 2026

共和精機
共和精機
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I want to outsource FC and FCD parts for agricultural machinery and engines, but I've been turned down by other companies due to concerns about powder clogging and tool wear... for those in the same situation!

"After obtaining a quote for total machining (complete machining) from a round bar according to the drawing, the processing time and material costs skyrocketed, making it unprofitable..." "Although the prototype phase went smoothly, once we transitioned to mass production, the accuracy became unstable, leading to supply concerns..." Are you facing such challenges in the purchasing, procurement, or production technology departments of your manufacturing company? Kyowa Seiki's "Precision Cutting Processing Contract Service for Gray Cast Iron and Ductile Cast Iron" fundamentally resolves these issues. - Cost reduction proposals from the drawing stage that leverage the black skin: We propose a meticulous machining design that considers the shape in advance and leaves 30-50% of the black skin (unprocessed surface) intact. This avoids unnecessary total machining while maintaining part strength and significantly reducing labor hours. - Mass production capacity with 49 machining centers and 27 NC lathes: With approximately 100 machines, including 10 horizontal and 39 vertical machining centers, we ensure stable supply with short lead times and high precision for medium to large lot production. *Download the catalog for case studies and more details!

    Processing Contract
スクリーンショット

Machining of gray cast iron and ductile cast iron.

スクリーンショット 2026-07-24 180606.png
スクリーンショット 2026-07-24 180606.png
  • Special site - Product/service details - https://pr.mono.ipros.com/kyowa-seiki/product/

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basic information

【Main Equipment】 ■ 1 unit of 5-axis machining center ■ 2 units of CAD/CAM ■ 1 unit of 3D printer ■ 1 unit of multi-tasking machine ■ 10 units of horizontal machining center ■ 39 units of vertical machining center ■ 27 units of CNC lathe ■ 11 units of drill press ■ 1 unit of broaching machine ■ 3 units of general-purpose lathe ■ 1 unit of CNC 3D measuring machine ■ 2 units of 3D measuring machine ■ 1 unit of digital microscope ■ 30 other units

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Applications/Examples of results

【Target Applications and Specifications】 - Applicable Industries: Agricultural machinery (tractors), construction machinery, industrial diesel engines, hydraulic and pneumatic equipment, architectural objects, lighting panels - Applicable Materials: Gray cast iron (FC200, FC250, etc.), ductile cast iron (FCD450, FCD600, etc.), aluminum, and other metals - Main Works: Gear cases, brake cams, bearing holders, differential cases (front and rear wheels), brake stoppers, crank bearings, etc.

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Case studies of processing differential cases, gear cases, brake cams, crankshaft bearings, and bearing holders.

Case studies of processing differential cases, gear cases, brake cams, crankshaft bearings, and bearing holders.

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Republic Precision Machinery Co., Ltd. Business Introduction

Republic Precision Machinery Co., Ltd. Business Introduction

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共和精機

共和精機

Machine elements and parts

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Kongō Seiki Co., Ltd. is engaged in the processing and manufacturing of diesel engine parts, tractor parts, and other components at the New Tone Industrial Park in Inashiki City, Ibaraki Prefecture. We can also produce items such as lighting panels and vases based on the CAD data you provide. Please feel free to contact us regarding technology, delivery times, quantities, or anything else.

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