The Shigiya 45-D is a high-capacity cylindrical grinder built to handle larger diameters and heavier workpieces with consistent precision. It delivers stable grinding performance through a rigid machine structure, dependable thermal control, and smooth, repeatable operation. As a result, the 45-D supports reliable accuracy and consistent part quality in demanding production environments.
The Shigiya G-45D is a hydraulic cylindrical grinder built to meet the demands of medium-size precision grinding. Its solid structure and wide range of capabilities make it ideal for manufacturers who need consistent performance across a variety of applications. With a swing over table of 450 mm (17.72 inches), the G-45D handles a range of workpiece diameters effectively. Moreover, its multiple center length options—from 1,000 mm to 6,000 mm—enable it to support parts up to 200 inches long. This combination of features allows the G-45D to work across diverse industries, such as transportation, aerospace, and general part manufacturing.
Unlike CNC machines that rely on automation, the G-45D emphasizes hands-on precision. Operators can control every grinding pass, which improves accuracy and consistency. The manual cylindrical grinding process gives machinists direct control, ensuring that each component meets strict tolerances. Additionally, its hydraulic system provides smooth table movement, making operations more stable. As a result, users experience fewer dimensional errors and better surface finishes. The G-45D’s strength lies in its ability to repeat high-precision results.
Although the G-45D is considered a medium-size grinder, it supports heavy parts with ease. Its capacity reaches up to 2,200 lbs (1,000 kg), giving it a competitive edge in its category. This means users can grind mid-to-large parts without sacrificing accuracy or requiring a full-size machine. Its heavy-duty design minimizes vibration, helping it maintain stability throughout long grinding cycles. With less vibration, the machine delivers more reliable finishes and tighter tolerance control, even when operating at full capacity.
Whether you’re handling a custom job or a repeat production run, the G-45D adapts easily. Its range of center lengths and high weight capacity make it versatile for many applications. Because of this flexibility, it fits well in both high-volume facilities and small, specialized workshops. Moreover, the grinder’s design emphasizes ease of maintenance. That means operators spend less time adjusting the machine and more time focused on production. This reliability, combined with user-friendly operation, results in higher output and reduced downtime.
Metric
| Specifications | Units | |
|---|---|---|
| Swing Over Table | mm | 450 |
| Distance Between Centers | mm | 1000, 1500, 2200, 3000, 4000, 5000, 6000 |
| Weight Capacity | kg | 1000 |
Standard
| Specifications | Units | |
|---|---|---|
| Swing Over Table | inch | 17.72 |
| Distance Between Centers | inch | |
| Weight Capacity | lbs | 2204.62 |
The Shigiya G-45D is a large-capacity cylindrical grinder for large and heavy shafts requiring stable external cylindrical grinding. 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 45-class machine scales swing, grinding diameter, center distance, and work load for large components. Final capacity varies by model and bed length; the related large Shigiya platforms extend to multi-meter center distances and heavy between-centers loading. 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 G-45D include:
Workhead, tailstock, centers, steady rests, and loading equipment must support the full component mass without bending or damaging finished journals.
Grinding over extended center distances requires careful leveling, thermal stabilization, support placement, and verification of taper along the usable work length.
Abrasive type, grade, bond, wheel dimensions, dress form, and dressing interval must be matched to material, stock allowance, finish, and cycle time. The G-45D 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 G-45D can hold the required size, roundness, cylindricity, and surface finish through production.
The 45-class machine scales swing, grinding diameter, center distance, and work load for large components. Final capacity varies by model and bed length; the related large Shigiya platforms extend to multi-meter center distances and heavy between-centers loading. 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.