A general-purpose precision internal grinding machine with push-button analog control that maximizes the benefits of manual operation; both new and remanufactured machines are eligible for the "Monozukuri Subsidy."
The smallest general-purpose precision internal grinding machine in the YIG series is the YIG-15SA model. It has a proven roundness measurement of 0.07μm. The spindle and grinding wheel spindle have a lower center height of 1080mm, which is highly appreciated as it allows the operator to lean in and easily operate the handles and levers while observing the machining conditions. Additionally, one operator can work with 2 to 3 machines simultaneously. The SA model offers a choice between a "semi-automatic grinding cycle" for processing single items and a "fully automatic grinding cycle" for continuous processing of identical items. It is suitable for small-batch production of various types, ranging from 100 to 300 pieces. The spindle swivel angle of the YIG-15SA is +5° (half angle). The workpieces to be ground are expected to be straight items such as automotive parts, motorcycle components, and electrical parts, with small and short inner diameters.
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basic information
【Features】 ○ The diameter of the grinding wheel used is 90% or less of the processing inner diameter. ○ A spindle for the grinding wheel with an appropriate rotational speed, a scroll chuck, or a hydraulic chuck is required separately. ○ The maximum rotational speed of the grease-lubricated grinding wheel spindle with belt drive is 40,000 rpm, and for oil mist lubrication, it is 60,000 rpm. ○ For inner diameter grinding of 8φ or less, if a grinding wheel speed of 60,000 rpm or more is required, please contact us. (For built-in motor high-frequency spindle specifications, etc.) ○ When purchasing the main unit, accessories such as "hydraulic tank," "oil cooler," and "coolant tank with BUNRI magnetic separator" will be included. 【Standard Features】 ○ Grinding wheel spindle inverter ○ Digital positioning of the dresser device (Note 1) ○ Cleaning water switch (automatic/off/manual) ○ Water gun ○ Multiple dress Note 1: This can be reverted to the specifications of the old-style dresser upon submission of a pledge. *For other functions and details, please refer to the Irino Kiko channel on YouTube. https://youtube.com/@irinokiko
Price range
P7
Delivery Time
※The delivery time is approximately four months after placing the order. Depending on the timing, we also have models available for immediate delivery.
Applications/Examples of results
【Specifications】 ○ Control panel: Push-button analog control ○ Grinding range (diameter): 8φ to 150φ ○ Maximum grinding length: 150 mm ○ Swing on the reciprocating table: φ400 mm ○ Swing inside the chuck cover: 310φ ○ Maximum stroke of the reciprocating table: 520 mm ○ Reciprocating table speed: Hydraulic stepless, 0 to 9 m/min ○ Spindle rotation speed: Stepless inverter control, 30 to 800 min⁻¹ ○ Spindle turning angle (half angle): +5° ○ Grinding wheel axis feed: 1 scale, φ0.005 mm (automatic feed amount maximum φ0.9 mm) ○ Grinding wheel axis movement distance: Maximum 100 mm ○ Feed: Hydraulic stepless, automatic feed ○ Motors: Spindle 1.5 kW 4P, grinding wheel axis 2.2 kW 2P, hydraulic 1.5 kW 4P, cooling water 100 W 2P, magnetic separator 25 W 4P ○ Oil tank capacity: 90 L ○ Cooling water tank capacity: 120 L ○ Floor area (including hydraulic and cooling water tanks, etc.): 2,700 x 1,700 mm ○ Total weight: 2,000 kg ○ Recommended grinding fluid: Sanwa Chemical Industry, Samic Cool Air 122 (emulsion type water-soluble grinding oil) ○ Recommended hydraulic oil: Nippon Sun Oil, Lube Way 150 (VG-32)
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Company information
Irino Kiko Co., Ltd. (a full member of the Japan Precision Machinery Manufacturers' Association) manufactures precision internal grinding machines capable of processing difficult-to-cut materials and meeting high precision requirements. We have achieved roundness of 0.07μm, generally maintaining levels around 0.1 to 0.2μm for machine deliveries. Professional engineers are continuously developing and manufacturing products in areas such as the main body of internal grinding machines, spindle axes, jigs, and electrical control. We manufacture, sell, and repair general-purpose and hybrid precision internal grinding machines, large general-purpose precision internal grinding machines, NC precision internal grinding machines, spindle axes (grease-lubricated and oil mist-lubricated), and rotating tools (Kere). We also have a track record of developing, manufacturing, and selling special internal grinding machines tailored to specific workpieces. Currently located in the Kurihama industrial area of Yokosuka City, we will be relocating to the Yokosuka Research Park (YRP) in October 2025. https://yrp.co.jp/ Planned construction site: 7-3 Hikari no Oka, Yokosuka City, Kanagawa Prefecture Our professional engineers, specializing in the manufacturing of internal grinding machines and machine tools, will continue to support the industry and meet your needs.