Honing Plate G Series High Performance Long Stroke Model
G50L-MM1 G Series Long Stroke Model
The long-length processing version of the versatile G series, ideal for multi-product production, has finally arrived! Thanks to the adoption of a double slide mechanism in the spindle section, the machine remains compact!
The vertical high-speed honing machine G series long stroke model is a versatile series optimized for mass production at a reasonable cost, based on the specifications of the standard model and specialized for long hole processing. The automatic machine expansion method is adopted for the grinding wheel expansion system, which is the heart of the honing machine. It performs precise micro-cutting synchronized with the stroke, enabling ultra-precision machining that improves surface roughness and achieves shape accuracy correction and stable machining diameter in high-precision processing zones even in mass production processes. 6 ADVANTAGES - 10-25% increase in productivity (compared to our company) - Stable high precision (cylindricity, machining diameter, surface roughness) - Ease of use - 90% energy savings (compared to our company) - 15-30% space savings (compared to our company) - Low noise at 70dB Nisshin Seisakusho, as a comprehensive manufacturer of honing machines, selects the machine body, tools, grinding wheels, and jigs comprehensively with unique know-how to achieve ultra-precision machining. We have received high evaluations as a leading manufacturer in Japan from customers in the automotive industry, motorcycles, construction machinery, oil and pneumatic, home appliances, molds, general-purpose engines, sewing machine industries, and more.
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basic information
Covers processing diameters from φ4 to φ50, with a processing length of up to 300mm (350mm). If conditions are met, processing is possible up to a maximum of 350mm. The target products are hydraulic components and high-pressure pump parts that require high precision with processing lengths of 200L to 350L. The spindle section adopts a double slide mechanism for both main and sub, enabling long-length processing while also achieving compactness of opposing machinery. Additionally, control is achieved using a G-type head, realizing high efficiency and energy savings. This double slide mechanism also allows for the use of standard short tools, making it suitable for small-batch production of various types. The photo shows G50L-MM1. Depending on the processing length and conditions, the maximum speed may not be achievable, and the processable length may also be limited by the required processing precision. This specification may change without notice for product improvement, so please feel free to contact us for detailed functionality.
Price range
Delivery Time
※Delivery dates may vary depending on specifications, so please feel free to contact us.
Applications/Examples of results
Cylinders, connecting rods, barrels, nozzles, various gears, turbos, compressors, stator cores, hydraulic parts, pneumatic parts, ceramic parts, power steering, etc. We have received high praise from various customers in the automotive industry, motorcycles, construction machinery, hydraulic and pneumatic sectors, home appliances, general-purpose engines, sewing machine industry, etc., for our inner diameter finishing processes, including injection pumps. Please feel free to contact us regarding pricing and delivery times.
Line up（4）
| Model number | overview |
|---|---|
| G25-MM2 | Ultra-precision! Stable! A versatile model optimal for mass production of various types at a reasonable cost |
| G25-MR2 | Ultra-precision! Stable! A versatile model that enhances productivity by incorporating a rotary table |
| G75-MM1 | The technology cultivated in small diameters is inherited as is! Achieves process consolidation through integrated tools combining rough machining, finishing, and air micro |
| F25G-M2DR | Flexible production changes! A flexible cell model that adapts to production fluctuations according to purpose |
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Company information
Our company is a comprehensive manufacturer of ultra-precision honing machines based in Kyotango City, Kyoto Prefecture. Founded in 1946 as a specialized manufacturer of sewing machine parts, we have since made continuous efforts in the production of various precision machine parts (industrial sewing machine parts, engine parts for automobiles and motorcycles, etc.) and machine tools (vertical automatic honing machines, special grinding machines, etc.), supplying numerous products to the industrial sector. Nisshin ProSOL's unique honing technology, leveraging precision machining techniques, contributes to the rationalization, labor-saving, and high precision of manufacturing processes across diverse industries through proactive expansion into global markets. We changed our company name in April 2025.