Universal Precision Internal Grinding Machine YIG-20-MSA (Internal grinding for diameters of 8φ or less)
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 YIG-15SA is one of the larger models. The YIG-20MSA has a maximum grinding range of 200φ, which is +50φ larger, and the spindle can tilt by +15° (half-angle) as standard. It is favored by tool factories and grinding processing companies that perform grinding of gauges and jigs. The center height of the spindle and grinding wheel spindle is 1120mm. Like the YIG-15SA, the YIG-20MSA is designed to allow the operator to lean in and easily operate the handles and levers while observing the processing situation, which is highly appreciated. Additionally, it allows one operator to work with multiple machines, typically 2 to 3 units. The MSA 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 low-volume production of various types, typically 100 to 300 pieces.
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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 with a rotation speed suitable for the processing inner diameter, along with a scroll chuck or hydraulic chuck, is required separately. ○ The maximum rotation speed of the belt-driven, grease-lubricated spindle 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 rotation 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" are included. 【Standard Features】 ○ Grinding wheel spindle inverter ○ Digital positioning of the dresser device (Note 1) ○ Cleaning water switch (automatic/off/manual) ○ Water gun ○ Multiple dressing 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 check 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 200φ ○ Maximum Grinding Length: 200 mm ○ Swing on the Table: φ540 mm ○ Swing inside the Chuck Cover: 370φ ○ Maximum Stroke of the Table: 520 mm ○ Table Speed: Hydraulic stepless 0 to 9 m/min ○ Spindle Rotation Speed: Stepless inverter control 30 to 800 min⁻¹ ○ Spindle Swivel Angle (Half Angle): +15° ○ Grinding Wheel Axis Infeed: 1 division φ0.005 mm (Automatic feed amount maximum φ0.9 mm) ○ Grinding Wheel Axis Movement Distance: Maximum 100 mm ○ Spindle Base Movement Distance: Maximum 200 mm in the longitudinal direction, maximum 240 mm in the cross direction ○ 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.): 2,900 x 1,350 mm ○ Total Weight: 2,200 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.