The Shigiya GPH-30B is a high-precision cylindrical grinder built for flexible internal and external grinding of medium-sized components. It delivers stable, repeatable accuracy through a rigid machine structure, precise spindle control, and consistent thermal performance during extended production cycles. As a result, the GPH-30B supports reliable machining of tight-tolerance parts while maintaining consistent grinding quality across varied applications.
The GPH-30B is a compact yet powerful CNC cylindrical grinder engineered for precision and flexibility. Designed to handle both small-batch and high-volume applications, it delivers repeatable accuracy across a range of grinding operations. Its rigid construction and smooth CNC controls ensure consistent results with minimal effort. Because the CNC cylindrical grinder is built for efficiency, it helps manufacturers improve throughput while maintaining part quality. The machine is ideal for aerospace, automotive, and general machining sectors where reliability is key.
The GPH-30B functions as a reliable high-precision grinding machine that meets the needs of shops handling tight tolerances and complex part geometries. Its wheel head and spindle system maintain micron-level accuracy even during long production runs. In addition, this high-precision grinding machine allows operators to grind with confidence, knowing the finish will meet exacting standards. From hardened steels to specialty alloys, the GPH-30B handles challenging materials with ease.
What makes this model truly unique is its role as a versatile CNC grinder with the added benefit of manual feed hand wheels. These hand wheels allow for fine adjustments during setup and low-volume grinding, giving users more control when it matters most. Because the manual feed hand wheels complement the CNC control system, shops can switch between automated cycles and manual fine-tuning without interrupting production. This flexibility makes the GPH-30B a go-to solution for prototype work and regrinds.
The GPH-30B fits seamlessly into modern automated grinding solutions. It integrates easily with robotic loaders and part conveyors, allowing lights-out operation and reduced labor requirements. Moreover, shops using automated grinding solutions benefit from improved part consistency and increased output. The machine’s CNC platform is stable, easy to program, and built for high-mix production environments.
As trusted precision machining equipment, the GPH-30B is engineered for daily use and long-term durability. It maintains accuracy over time while reducing downtime and operating costs. More importantly, the GPH-30B functions as both a high-precision grinding machine and a flexible solution for evolving production needs. Whether producing shafts, bearing races, or custom components, this machine supports your shop’s performance goals.
Metric
| Specifications | Units | |
|---|---|---|
| Swing Over Table | mm | 300 |
| Distance Between Centers | mm | 500, 750, 1000, 1500, 2000 |
| Weight Capacity | kg | 150 |
| Machine Weight | kg | 2800 / 3100 / 3800 / 4600 |
| Wheel Size OD | mm | 405 / 455 / 510 |
| Wheel size width | mm | 100 |
| Wheel spindle | KW | 3.7 / 5.5/7.5 |
Standard
| Specifications | Units | |
|---|---|---|
| Swing Over Table | inch | 11.81 |
| Distance Between Centers | inch | 19.69 / 29.53 / 39.37 / 59.06 / 78.74 |
| Weight Capacity | lbs | 330.69 |
| Machine Weight | Ibs | 6172.94 / 6834.33 / 8377.57 / 10141.26 |
| Wheel Size OD | inch | 15.94 / 17.91 / 20.08 |
| Wheel size width | inch | 3.94 |
| Wheel spindle | HP | 4.96 / 7.38 / 10.06 |
The Shigiya GPH-30B is a high-accuracy CNC cylindrical grinder for stable production grinding where slide control, roundness, and long-cycle consistency are critical. 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 30-class GPH platform is selected by swing and work length, then configured around wheel, support, gauging, and dressing requirements. The usable capacity must include centers, chuck or drive hardware, and any in-process gauge. 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 GPH-30B include:
Controlled wheel infeed and table motion support roundness, straightness, and size consistency over repeated production cycles.
Warm-up, coolant temperature, in-process gauging, wheel wear compensation, and dressing frequency must be planned as one accuracy system.
Abrasive type, grade, bond, wheel dimensions, dress form, and dressing interval must be matched to material, stock allowance, finish, and cycle time. The GPH-30B 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 GPH-30B can hold the required size, roundness, cylindricity, and surface finish through production.
The 30-class GPH platform is selected by swing and work length, then configured around wheel, support, gauging, and dressing requirements. The usable capacity must include centers, chuck or drive hardware, and any in-process gauge. 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.