Miyano Machine Tools: the Japanese benchmark for CNC lathes

History of Miyano: Birth of a global leader in machine tools

Miyano was founded in Japan in 1929 by Toshimori Miyano, initially in the field of high-end tools. In 1948, it began manufacturing automatic lathes, developing Japan's first automatic cam lathe – the AL-S25 model – marking a major advance for Japanese industry. Over the decades, Miyano diversified and perfected its range of machine tools by embracing digital technology (NC then CNC) to remain at the cutting edge.

 

In 2010, Miyano joined the Citizen group, which was interested in its expertise in fixed-head lathes. The following year, Citizen Machinery Co. merged with Miyano to form Citizen Machinery Miyano, consolidating the expertise of both manufacturers. Now part of the Citizen Group, Miyano benefits from global reach while maintaining its identity focused on the most demanding turning operations.

 

Miyano CNC machine range and main models

Miyano offers a comprehensive range of fixed-headstock CNC lathes (fixed spindle) for bar and blank machining, covering a wide range of capacity and complexity requirements. These include:

• BNA Series – Compact lathes (≈42 mm bar capacity) offering sophisticated functions and high precision in a small footprint. Some models already incorporate two turrets and a Y-axis to increase machining flexibility – for example, the BNA-42DHY3, despite its small footprint, has a main turret with a Y-axis and a second 6-station turret allowing simultaneous machining on the main spindle and counter-spindle, thus reducing cycle time.
• BNJ series – Twin-spindle turning centre with double turret, one of which is equipped with a Y-axis. This architecture allows simultaneous machining on both sides of the workpiece. For example, the Miyano BNJ-42SY3 has 7 CNC axes (Ø42 mm bar capacity) with a main spindle and a counter-spindle, a 12-station upper turret (all positions motorised) equipped with a Y-axis, and a 6-station lower turret for secondary operations. This configuration allows complex shapes to be machined in a single pass, working in parallel on both spindles.
• BNE series – Twin-spindle lathe with greater capacity (up to 51 or even 65 mm bar diameter depending on the version) and two turrets. Some high-end variants incorporate two Y axes (one on each turret) to further extend the simultaneous machining possibilities and the number of cutting tools. For example, the BNE-51/65 MYY model has two turrets with 12 stations each, both with a Y-axis, for maximum flexibility.
• ABX series – Very high-capacity CNC lathe (up to 65–80 mm bar diameter) equipped with three turrets. These impressive machines, equipped with multiple Y axes, are designed for the intensive production of complex large-diameter parts, with the possibility of having three tools cutting simultaneously on two spindles. A model such as the ABX-80 THY, for example, offers three turrets with 12 tools each, for parallel operations covering all sides of the part in record time.

Focus on the Miyano BNJ-42SY3 model

The Miyano BNJ-42SY3 twin-spindle CNC lathe model illustrates the manufacturer's expertise in multi-axis turning. The main spindle (speed 6000 rpm for 11 kW of power) and the counter spindle (speed 7000 rpm for 5.5 kW of power) of the BNJ-42SY3 work together to machine the front and rear of parts in a single setup, eliminating the need for manual reworking. Its double turret (12 stations at the top, 6 at the bottom) allows simultaneous operations on each spindle, which drastically reduces the total machining time. The upper turret, equipped with a Y-axis (+/- 40 mm stroke), also allows transverse machining (off-centre drilling or milling), offering great versatility in the shapes that can be produced. Controlled by a modern numerical control system (Fanuc 0i), the BNJ-42SY3 has a total of 7 axes to precisely coordinate all these movements. In summary, this CNC lathe integrates several machines into one: it produces complex parts in a single, fully automated cycle, significantly improving productivity (20,000 [mm/min] rapid feed speed in the Z axis) and manufacturing quality.

 

Typical applications and industrial sectors concerned

Miyano CNC lathes are designed for the mass production of high-precision cylindrical parts and are used in many fields. They are particularly common in the manufacture of automotive products (e.g. axles, bushings, connectors, engine components), aerospace parts (ball joints, landing gear parts, hydraulic components), hydraulic equipment (distributors, fittings) and medical devices and instrumentation (implants, special screws, surgical tool parts). Thanks to their versatility, these machines are suitable for production lines in general mechanical engineering subcontractors as well as in high-tech industries.

In practice, a Miyano lathe can be used to machine complex products with high precision from metal bars (steel, stainless steel, alloys, etc.) of varying diameters and lengths, with optimised cycle times. They are the equipment of choice for precision engineering when it comes to producing large quantities of parts with tight tolerances and impeccable surface quality. For example, in the automotive industry, these machines are valued for the rapid production of engine parts and gearboxes, while in the medical field they can manufacture implant screws and instrument components with micron-level accuracy. Multi-axis capabilities (C and Y axes, rotating tools) also allow light milling operations to be carried out in addition to turning, which broadens the range of products that can be manufactured without secondary operations.

 

Why do manufacturers choose Miyano lathes?

The advantages of Miyano CNC lathes explain why professionals are so enthusiastic about this brand:

• Robustness and cutting stability – Miyano lathes are designed with highly rigid frames and mechanical components capable of withstanding demanding machining operations without vibration. This solid construction ensures excellent tolerance control in heavy machining, contributing to the final quality of the parts.
• Reliability and longevity – The Japanese manufacturing quality of Miyano machines translates into high reliability over time. These ‘built to last’ machine tools operate smoothly for years with proper maintenance, giving manufacturers confidence in the profitability of their investment. Miyano's reputation is built on this consistent long-term performance.
• High productivity – Thanks to multi-axis configurations (Y axes, multiple turrets, counter spindles), a Miyano lathe can perform in a single operation what would traditionally require several machines or set-ups. Simultaneous machining on the main spindle and counter spindle drastically reduces cycle times. Quick tool changes and automation (with bar feeders, part collectors, etc.) minimise downtime, significantly increasing production rates.
• Versatility of the range – Miyano offers a wide range of models covering various diameters, lengths and configurations, allowing each user to find the right machine for their parts. From the short strokes of compact machines to the long strokes of triple-turret turning centres, the Miyano range is suitable for a wide range of applications. This variety is complemented by compatibility with a wide range of accessories and peripherals (automatic bar feeders, conveyors, measuring systems, etc.), offering complete and sustainable turnkey solutions.

In short, choosing Miyano means choosing proven equipment that combines high machining quality, operational reliability and high performance. Manufacturers also appreciate the ease of use of these machines (standard Fanuc CNC interfaces, easy programmability).

 

Buying a Miyano lathe: new or used?

When an industrialist is considering purchasing a Miyano CNC lathe, they must weigh up the choice between buying a new or used machine. A new lathe benefits from the latest technological advances and a manufacturer's warranty, at the cost of a higher investment and delivery times ranging from a few weeks to several months. On the other hand, turning to the second-hand market allows you to obtain a machine immediately, at a much lower cost, while still benefiting from the intrinsic qualities of the brand. Thanks to the robustness and durability of Miyano machines, a well-chosen second-hand machine can easily meet modern production requirements for many years to come.

Of course, the purchase of a used machine must be made in an informed manner. It is important to select a suitable model (technology, capacity, year) and to ensure its actual technical condition. The number of hours of service, the level of maintenance the machine has received, and any upgrades are points to consider. For a non-specialist buyer, assessing these aspects can be complex. This is why many manufacturers call on experts in used machine tools such as Kraffter Machine Tools for support in this process.

 

Advantages of buying used with an expert such as Kraffter Machine Tools

Calling on a specialist such as Kraffter Machine Tools to purchase a used Miyano lathe offers many benefits:

• Technical inspection and refurbishment: Kraffter carries out a complete overhaul of every machine it purchases. This includes a thorough inspection (test bench, technical diagnosis) and any necessary refurbishment work – cleaning, repair of worn or defective components, replacement of parts if necessary. The aim is to deliver a machine that complies with CE safety standards, is fully operational and accurate, and ready to produce.
• Comprehensive logistics management: The company takes care of all the practical steps involved in the transaction. This ranges from on-site dismantling of the purchased lathe to its secure transport (including international transport) and administrative and customs formalities for export, if applicable. 
• Personalised advice and support: By calling on an expert dealer, the buyer benefits from advice on choosing the Miyano model best suited to their needs (preliminary study of the intended applications, comparison of new/used options available). Each customer has a single point of contact who is available to answer technical questions, whether in the UK or abroad. This personalised support guarantees a smooth and reliable purchasing experience.

Are you interested in reselling your Miyano machine tools? We invite you to visit our page dedicated to the resale of your machine tools

 

In short, choosing a used Miyano lathe through Kraffter Machine Tools allows you to secure your investment. The buyer gets a machine that has been rigorously inspected and reconditioned, performing as well as when it was new. They also benefit from the expertise and support of a professional in used machine tools. This approach allows manufacturers to integrate a Miyano lathe into their lines with confidence and fully exploit its advantages to improve their productivity.