USED OKUMA GP/GA-34FII

The Okuma GP/GA-34FII is a versatile CNC cylindrical grinding machine designed for high-precision external grinding of small to medium-sized components. Part of Okuma’s GP/GA-FII series, this machine is engineered to handle a wide range of grinding applications, from simple cylindrical parts to complex profiles, making it suitable for industries such as automotive, hydraulics, aerospace, and general engineering.

The machine supports a maximum grinding diameter of approximately 300 mm and offers multiple distance-between-centers configurations ranging from 350 mm to 1,500 mm, allowing flexibility in handling both short and long workpieces. It uses a grinding wheel of around 455 mm diameter powered by a 7.5 kW spindle motor, delivering consistent grinding performance and stability.

A key feature of the GP/GA-34FII is its rigid construction, including a heavy base design combined with wide V-flat guideways. This structure enhances stability during grinding operations and helps maintain high dimensional accuracy over long production runs. The hydrodynamic wheel spindle further improves rotational precision and reduces vibration, which is critical for achieving fine surface finishes.

The machine is equipped with Okuma’s OSP-P300GA control system, featuring IGAP+ conversational programming that simplifies setup and operation. This enables efficient programming of complex grinding cycles such as plunge, traverse, taper, and form grinding.

In terms of cutting (grinding) time, the GP/GA-34FII is designed to maximize spindle utilization with rapid traverse speeds of approximately 16 m/min, minimizing idle time and improving throughput. Automation compatibility and flexible configurations further enhance its suitability for both high-volume production and mixed-batch manufacturing. Overall, the GP/GA-34FII delivers a strong combination of precision, flexibility, and productivity in cylindrical grinding applications.

OKUMA GP/GA-34FII SPECIFICATIONS

WHY BUY USED OKUMA GP/GA-34FII

Buying a used Okuma GP/GA-34FII is a highly practical option for manufacturers looking to achieve high-precision grinding performance at a significantly reduced cost. Okuma grinding machines are known for their durability, rigid construction, and long-term accuracy, making them particularly attractive in the secondary equipment market. Even older machines can maintain tight tolerances if they have been properly maintained.

One of the biggest advantages of purchasing used is cost efficiency. New CNC cylindrical grinders require a substantial investment, especially when equipped with advanced control systems and automation features. A used GP/GA-34FII provides similar capabilities—such as high-accuracy grinding, flexible workpiece handling, and reliable spindle performance—at a fraction of the original price, allowing businesses to optimize capital allocation.

Grinding time (spindle hours) is one of the most critical factors when evaluating a used unit. Machines with lower grinding hours generally retain better spindle accuracy and guideway condition. For example, a machine from the early 2000s with moderate grinding time may offer better long-term performance than a newer machine that has been heavily used in continuous production. Since grinding accuracy depends heavily on spindle condition, reviewing maintenance history and calibration records is essential.

Another advantage is flexibility. The GP/GA-34FII supports a wide variety of grinding operations, including plunge, traverse, taper, and form grinding. This makes it suitable for diverse production needs, even in a used condition. Additionally, Okuma’s continued parts availability and service support reduce the risks associated with purchasing older equipment.

From a financial perspective, buying used allows for faster return on investment. With lower upfront costs and the ability to maintain high grinding time utilization, a used GP/GA-34FII can quickly contribute to productivity and profitability in precision manufacturing environments.

HOW MUCH DOES A USED OKUMA GP/GA-34FII COST?

The cost of a used Okuma GP/GA-34FII varies depending on factors such as manufacturing year, machine condition, configuration, and most importantly, grinding time (spindle hours). As a mid-size cylindrical grinder, it typically falls within a moderate price range while offering high precision and flexibility.

Machines built before 2000 (or earlier-generation cylindrical grinders comparable to this platform) generally range from $10,000 to $30,000. These machines are the most affordable but often include older control systems and higher wear levels. Grinding time is especially important in this category—machines with high spindle hours may require reconditioning, while low-hour units can still perform effectively for lighter production applications.

Models produced between 2000 and 2010 typically range from $30,000 to $70,000. This segment often provides the best balance between price and performance, offering improved controls, better spindle technology, and enhanced machine rigidity. Units with low to moderate grinding time are particularly desirable, as they can deliver reliable accuracy with manageable maintenance costs.

Machines from 2010 to 2025 generally range from $70,000 to $150,000 or more, depending on configuration, automation integration, and control upgrades. These newer machines benefit from advanced CNC systems, improved efficiency, and better consistency in long production runs.

Grinding time remains the most important pricing factor. A newer machine with excessive spindle hours may be less valuable than an older machine with minimal use. Buyers should carefully evaluate spindle condition, maintenance history, and overall machine accuracy to determine true market value and ensure long-term operational reliability.