The Shigiya GP-65D is a heavy-duty cylindrical grinder built for precision machining of large, high-mass workpieces. It delivers consistent, repeatable accuracy through a rigid machine platform, stable thermal behavior, and smooth grinding performance across long production runs. As a result, the GP-65D supports dependable throughput while maintaining tight tolerances and consistent part quality in demanding manufacturing environments.
The GP-65D is a powerful heavy-duty CNC cylindrical grinder built to handle high-precision machining on large-diameter and long-length workpieces. Designed for manufacturers who demand accuracy, rigidity, and long-term reliability, this grinder supports tough production requirements across a range of industries. Because of its solid construction and powerful wheel head, this heavy-duty CNC cylindrical grinder delivers unmatched stability, even under heavy grinding loads. It supports both low- and high-volume production with repeatable precision.
As a dedicated large workpiece grinding machine, the GP-65D accommodates oversized shafts, rolls, and cylindrical components with ease. It is engineered for applications where part length and diameter exceed the limits of standard grinders. In addition, the generous swing and distance between centers make this large workpiece grinding machine a strong choice for energy, aerospace, and defense-related parts. The system maintains accuracy across the entire part, regardless of length.
One of the GP-65D’s core features is its function as a table-traversing cylindrical grinder. The table moves smoothly under servo control, allowing precise positioning and controlled feed rates. This ensures that grinding passes remain accurate across long parts. Because of its rigid bed and advanced guideway system, this table-traversing cylindrical grinder minimizes vibration and thermal expansion—critical for maintaining surface finish and dimensional integrity.
Designed for critical tolerances, the GP-65D operates as reliable high-precision grinding equipment. It maintains tight geometry across varied material types, including hardened steels and alloys. As shops take on more complex work, this high-precision grinding equipment supports tighter finishes and finer surface profiles, helping manufacturers meet evolving quality standards.
The GP-65D supports scalable industrial grinding solutions. It integrates into larger machining cells and automation lines, making it ideal for high-throughput shops. Furthermore, these industrial grinding solutions improve part consistency while reducing manual handling and downtime. The GP-65D ensures manufacturers stay competitive through precision and durability.
Metric
| Specifications | Units | |
|---|---|---|
| Swing Over Table | mm | 650 |
| Distance Between Centers | mm | 2200, 3000, 4000, 5000, 6000 |
| Weight Capacity | kg | 3000 |
| Machine Weight | kg | 21,000 / 23,000 / 25,000 / 28,000 |
| Wheel Size OD | mm | 915 / 1065 |
| Wheel size width | mm | 130* |
| Wheel spindle | KW | 15 / 22 |
Standard
| Specifications | Units | |
|---|---|---|
| Swing Over Table | inch | 25.59 |
| Distance Between Centers | inch | 86.62 / 118.11 / 157.48 / 196.85 / 236.22 |
| Weight Capacity | lbs | 6613.87 |
| Machine Weight | Ibs | 46297.08 / 50706.32 / 55115.57 / 61729.43 |
| Wheel Size OD | inch | 36.02 / 41.93 |
| Wheel size width | inch | 5.12* |
| Wheel spindle | HP | 20.12 / 29.5 |
The Shigiya GP-65D is a large CNC cylindrical grinder for programmable OD grinding on large-diameter and long components. A.W. Miller Technical Sales supplies and supports Shigiya grinding equipment throughout New York, Pennsylvania, Maryland, Delaware, Southern New Jersey, and Quebec, with application engineering, installation, training, and factory-certified service.
The 65-class GP-D platform is part of Shigiya’s large table-traverse range. Published GP-65/85/100D data covers 650, 850, and 1,000 mm swing classes, center distances extending to several meters, loads up to 3,000 kg, and a 915 mm grinding wheel. Final machine selection should be based on the complete workpiece, stock allowance, tolerance, surface finish, wheel and dressing package, workholding, gauging, coolant system, automation target, and production rate.
Applications commonly evaluated for the Shigiya GP-65D include:
CNC wheelhead and table control coordinate multiple diameters, shoulders, and traverse zones across long, heavy parts.
Center load, drive torque, steady-rest placement, and crane access must be developed around the real shaft rather than maximum catalog dimensions alone.
Abrasive type, grade, bond, wheel dimensions, dress form, and dressing interval must be matched to material, stock allowance, finish, and cycle time. The GP-65D process should be validated with the complete wheel and coolant package.
Centers or chucking, drive method, support, coolant filtration, temperature control, and gauge strategy determine whether the GP-65D can hold the required size, roundness, cylindricity, and surface finish through production.
GP-65D is configured for programmable OD grinding on large-diameter and long components. The exact operation set depends on wheelhead configuration, dressing, workholding, gauging, and the geometry that must remain tied to one setup.
Review swing, maximum grinding diameter, distance between centers or chuck envelope, supported mass, wheel clearance, steady-rest space, and loading access. Catalog capacity should be reduced by the real fixture and tooling package.
Common evaluations include large rolls and shafts, energy and marine rotors, heavy industrial spindles, large-diameter precision components. Material, stock allowance, tolerance, surface finish, annual volume, and current cycle time determine whether the application is technically and economically appropriate.
Accuracy depends on machine condition, foundation, warm-up, coolant temperature and filtration, wheel balance, dressing, work support, gauging, and compensation. The process capability must be established against the drawing requirement.
A.W. Miller should review the part print, material and hardness, incoming condition, stock allowance, grinding diameters and lengths, tolerance, finish, takt time, loading, gauging, dressing, coolant, and facility requirements.