Higher Performance. Guaranteed.

You don’t compromise and neither will we. Our mission is to find the best tooling solution for you and deliver it with a personal commitment of efficient and measurable performance improvements. 

Premium tooling is critical to top-level production performance. BIG DAISHOWA manufactures high-performance, high-tolerance tooling. The result is an all-star line-up of products engineered to exacting standards and manufactured with materials and craftsmanship that enable superior performance.

Not every shop requires extreme accuracy or total efficiency. But for those whose challenge is to manufacture with greater responsibility and accuracy and to find products and processes to improve the efficiency of your applications, call us. We want to work with you.


BIG DAISHOWA's high-precision tooling guarantees maximum process reliability and reduction of waste.

Just a few of many concrete examples:


The equation is simple: higher power leads to a shorter processing time, which brings financial gain.

Just a few of many concrete examples:

  • MEGA ER Grip High precision collet, nut, and body outperform standard ER systems with their reliable and stable runout accuracy.
  • Twin-cutter boring heads SW. Without changing any components and without length adjustment, two different roughing methods, RSS and DVS, can be executed.
  • Balanced precision boring head EWB-AL. Made of high tensile aluminum with hard coating. Together with reductions and extensions made in the same way, the weight for long and large diameter tool combinations is reduced by more than 50%. The EWB-AL is designed for cutting speeds up to 2000 m/min and is equipped with a highly accurate self-balancing mechanism.
  • Smart Damper anti-vibration products are designed for deep-hole boring with BIG KAISER’s CKB modular boring system, and also for extended reach milling with both inch- and metric-pilot shell mills and face mills.


BIG DAISHOWA continuously invests in employees and machines to meet the high demands of innovation.

Just a few of many concrete examples:

  • BIG-PLUS Spindle System surpasses all other spindle concepts while offering interchangeability with existing machines and tool holders.
  • CKN: The strongest tool connection for lightweight tools. The newly developed double connector coupling enables the use of aluminum extension tubes which result in a weight reduction of up to 50% compared with steel tool combinations.
  • Series 318. High precision and light boring.
  • Precision boring head EWN 04-7The smallest precision boring head in the world.


Service at BIG DAISHOWA stands for highest supply from stock, prompt delivery service, decades-long spare parts inventory, competent representations all over the world and complete documentation of all products and cutting parameters.

Just a few of many concrete examples: