The Shigiya GAC-40B is a high-capacity angular cylindrical grinder built for precision grinding of larger, more complex workpieces. It delivers stable, repeatable accuracy through a rigid machine structure, precise axis control, and consistent thermal performance during extended production runs. As a result, the GAC-40B supports dependable throughput while maintaining tight tolerances and consistent part quality.
The Shigiya GAC-40B is a compact CNC angular cylindrical grinder built to deliver accuracy, reliability, and efficiency in a small footprint. Its design supports manufacturers who need to maximize production capabilities while maintaining floor space flexibility. With a swing over table of 16.14 inches, it accommodates a wide range of medium-sized parts, making it suitable for tool rooms and production facilities alike. Moreover, the machine’s compact layout integrates easily into existing manufacturing lines. This makes it an excellent choice for companies seeking to upgrade grinding performance without extensive facility modifications.
One of the GAC-40B’s standout features is its ability to perform simultaneous O.D. and shoulder face grinding. This dual-operation capability reduces the need for multiple setups, helping operators save time and avoid alignment errors. With fewer tool changes and less downtime, throughput increases, and the process becomes more streamlined. In high-volume environments, reducing cycle times can significantly impact overall efficiency. As a result, this grinder is ideal for operations requiring both speed and precision in every part it processes.
The GAC-40B features a powerful grinding spindle available in 10, 15, or 20 HP configurations. It drives a large grinding wheel—24.02 inches in diameter—capable of aggressive material removal or fine finishing. The distance between centers is 13.78 inches, and it supports up to 330 lbs of part weight. These specifications support a wide range of cylindrical grinding tasks while maintaining tight tolerances. Additionally, the machine’s rigid construction minimizes vibration, which enhances surface finish and extends wheel life. Operators benefit from both durability and precision, ensuring consistent output over time.
With its compact form and versatile grinding capability, the Shigiya GAC-40B is engineered for manufacturers who demand precision in a limited space. It handles complex parts with ease and fits well in both automated and manual setups. Whether you’re grinding shafts, tools, or shoulder faces, the GAC-40B delivers consistent results with reduced labor and higher repeatability.
Metric
| Specifications | Units | |
|---|---|---|
| Swing Over Table | mm | 410 |
| Distance Between Centers | mm | 350 |
| Weight Capacity | kg | 150 |
| Machine Weight | kg | 5600 |
| Wheel Size OD | mm | 610 |
| Wheel size width | mm | 50 – 175 |
| Wheel spindle | KW | 7.5 / 11 / 15 |
Standard
| Specifications | Units | |
|---|---|---|
| Swing Over Table | inch | 16.14 |
| Distance Between Centers | inch | 13.78 |
| Weight Capacity | lbs | 330.69 |
| Machine Weight | Ibs | 12345.89 |
| Wheel Size OD | inch | 24.02 |
| Wheel size width | inch | 1.97 – 6.89 |
| Wheel spindle | HP | 10.06 / 14.75 / 20.12 |
The Shigiya GAC-40B is a CNC angular cylindrical grinder for OD diameters and locating faces or shoulders that must be controlled from one setup. 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 40-class angular platform combines radial and face-grinding access. Swing, center distance, wheel angle and width, workhead capacity, and the specific automation or gauging package vary among the GAS, GAE, and GAC configurations. 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 GAC-40B include:
An angular wheel approach reaches cylindrical surfaces and adjacent locating faces while the part remains referenced in one setup.
Wheel form, dressing, corner radius, and approach path must be coordinated where a journal meets a critical shoulder or face.
Abrasive type, grade, bond, wheel dimensions, dress form, and dressing interval must be matched to material, stock allowance, finish, and cycle time. The GAC-40B 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 GAC-40B can hold the required size, roundness, cylindricity, and surface finish through production.
The 40-class angular platform combines radial and face-grinding access. Swing, center distance, wheel angle and width, workhead capacity, and the specific automation or gauging package vary among the GAS, GAE, and GAC configurations. The correct size is the smallest configuration that clears the complete part and workholding while meeting load, wheel, and process requirements.
Yes, when the wheel access, program, work support, and gauge plan allow it. Each diameter and shoulder must be checked for collision, stock condition, wheel form, dwell, traverse direction, and dressing demand.
Automation may include loading, chuck or center confirmation, in-process gauging, wheel dressing, part washing, and discharge. A stable manual process should be proven before unattended recovery logic is finalized.
Wheel specification and condition, dress parameters, work speed, traverse or plunge rate, spark-out, coolant delivery, vibration, and incoming stock all affect finish. A slower feed alone does not correct an unstable grinding system.
Flow, pressure, temperature stability, nozzle placement, filtration level, tank capacity, and material contamination must support both the wheel and tolerance. The coolant system should be treated as part of the machine process.