USED OKUMA GP/GA-36FII

The Okuma GP/GA-36FII is a high-capacity CNC cylindrical grinding machine designed for precision external grinding of medium-to-large and long shaft-type components. As part of Okuma’s GP/GA-FII series, this model is engineered to handle a wide variety of grinding applications while maintaining high rigidity, accuracy, and production efficiency. It is particularly well-suited for industries such as automotive, aerospace, heavy equipment, and general engineering where long components and tight tolerances are required.

A defining feature of the GP/GA-36FII is its ability to handle long workpieces. The machine offers multiple distance-between-centers configurations ranging from 350 mm up to 1,500 mm, along with a maximum grinding diameter of approximately 300 mm. This makes it ideal for grinding long shafts, multi-journal components, and parts requiring multiple grinding passes in a single setup.

The machine is equipped with a large grinding wheel (around 610 mm diameter) powered by a 15 kW spindle motor, providing both stability and high material removal capability. The hydrodynamic wheel spindle ensures smooth rotation and minimal vibration, which is critical for achieving fine surface finishes and maintaining dimensional accuracy over long grinding cycles.

Its rigid construction includes a heavy-duty base and wide V-flat guideways, which enhance stability during operation and reduce deflection when machining longer parts. The machine is controlled by Okuma’s OSP-P300GA system with IGAP+ conversational programming, enabling efficient setup and operation even for complex grinding cycles such as plunge, traverse, taper, and form grinding.

Designed for high grinding time utilization, the GP/GA-36FII features rapid traverse speeds of approximately 15 m/min, reducing non-productive time and improving throughput. Overall, it offers a strong combination of length capacity, precision, and productivity, making it a reliable solution for demanding cylindrical grinding applications.

OKUMA GP/GA-36FII SPECIFICATIONS

WHY BUY USED OKUMA GP/GA-36FII

Buying a used Okuma GP/GA-36FII is a highly practical option for manufacturers looking to acquire long-part grinding capability without the high cost of a new machine. Machines in this category are built with heavy-duty construction and precision components, allowing them to maintain performance over extended periods when properly maintained.

One of the main advantages of purchasing used is cost efficiency. Large-capacity cylindrical grinders like the GP/GA-36FII represent a significant capital investment when new. A used machine allows businesses to access the same long-bed grinding capability, high spindle power, and precision performance at a fraction of the original price, improving overall return on investment.

Grinding time (spindle hours) is one of the most critical factors when evaluating a used unit. Machines with lower grinding hours tend to retain better spindle accuracy and guideway condition. For example, a machine from the early 2010s with moderate grinding time may offer better long-term reliability than a newer unit that has been heavily used in continuous production. Since this model is often used for long shaft grinding, wear on guideways and steady-rest support areas should be carefully inspected.

Another advantage is process capability. The GP/GA-36FII can handle multi-journal grinding, long traverse operations, and complex geometries in a single setup. Even in a used condition, this capability can significantly improve workflow efficiency by reducing setups and handling time. Additionally, Okuma’s continued parts availability and service support help reduce ownership risk.

From a financial perspective, buying used enables faster payback. With lower upfront costs and the ability to sustain long grinding cycles, a used GP/GA-36FII can quickly contribute to production output and profitability in precision manufacturing environments.

HOW MUCH DOES A USED OKUMA GP/GA-36FII COST?

The cost of a used Okuma GP/GA-36FII varies depending on factors such as manufacturing year, machine condition, configuration, and most importantly, grinding time (spindle hours). As a larger and longer-bed cylindrical grinder, it typically commands higher prices than smaller models like the GP/GA-26W or GP/GA-34FII.

Machines built before 2000 (or earlier-generation long-bed cylindrical grinders comparable to this platform) generally range from $15,000 to $45,000. These machines are the most affordable but may include older control systems and higher wear levels. Grinding time is especially important—machines with high spindle hours may require reconditioning, while low-hour units can still be viable for lighter production work.

Models produced between 2000 and 2010 typically range from $45,000 to $100,000. This segment often provides the best balance between price and performance, offering improved controls, better spindle technology, and enhanced 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 $100,000 to $220,000 or more, depending on configuration, automation integration, and control upgrades. Newer machines of this model have been reported in the range of approximately $230,000 to $310,000 when purchased new, providing context for depreciation in the used market.

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, guideway wear, and maintenance history to determine true market value and ensure long-term operational reliability.