
Introducing the SMG SH-550 CNC Gear Hobbing Machine
Engineered and manufactured in South Korea, the SMG SH-550 CNC Gear Hobbing Machine delivers the capacity, rigidity, and versatility required for large-diameter gear production. Designed for manufacturers seeking a dependable platform for demanding gear-cutting applications, the SH-550 combines a substantial work envelope with six-axis CNC control and a robust production-ready configuration.
The SH-550 accommodates workpieces up to Ø410 mm with a ring loader and up to Ø550 mm in a stand-alone, manually loaded configuration. With a maximum capacity of M8, equivalent to 3.175 DP, the machine is well suited for producing larger spur, helical, and other precision gear components. A Ø330 mm worktable and maximum table speed of 200 rpm provide the foundation for stable, accurate machining across a wide range of applications.
At the center of the SH-550 is a high-performance hob head capable of accepting hobs up to Ø190 × 230 mm. The hob spindle delivers 15 kW of output, operates at speeds up to 1,000 rpm, and provides 210 mm of tangential hob-shift travel. A ±45-degree hob-head swivel range and BBT40 hob-arbor taper provide the flexibility and rigidity needed for a variety of gear geometries and cutting processes.
The machine is equipped with a Siemens 828D CNC control and six controlled axes—X, Y, Z, A, B, and C. Rapid traverse rates of 12 m/min on the X and Z axes and 5 m/min on the Y axis support efficient positioning and reduced non-cutting time. The standard configuration also includes wet and dry cutting capability, a C-axis oil cooler, automatic lubrication, hob-centering equipment, an electrical-cabinet air conditioner, and a UPS-powered automatic retract system.
Machine Capacity
Maximum workpiece diameter with ring loader: Ø410 mm
Maximum workpiece diameter manual load: Ø550 mm
Maximum module: M8
Diametral-pitch equivalent: 3.175 DP
Maximum table speed: 200 rpm
Table diameter: Ø330 mm
Hob Head
Maximum hob diameter/length: Ø190 × 230 mm
Maximum hob speed: 1,000 rpm
Maximum Y-axis hob-shift travel: 210 mm
Hob-head swivel angle: ±45°
Hob-arbor taper: BBT40
Hob-spindle output: 15 kW
Working Range
X-axis radial travel: 370 mm
X-axis operating range: 15–385 mm
Z-axis axial travel: 370 mm
Z-axis operating range: 150–520 mm
Optional Z-axis travel: 600 mm
Optional Z-axis operating range: 150–750 mm
Tailstock-center travel: 400 mm
Tailstock operating range: 305–705 mm
Rapid Traverse Rates
X-axis radial rapid traverse: 12 m/min
Z-axis axial rapid traverse: 12 m/min
Y-axis tangential rapid traverse: 5 m/min
Control and Machine Data
Number of CNC axes: 6 — X, Y, Z, A, B, and C
CNC control system: Siemens 828D
Operating voltage: 380 V, three-phase, 50/60 Hz
Voltage tolerance: ±10%
Frequency tolerance: ±2%
Floor space, L × W × H: 2,876 × 3,329 × 2,990 mm
Approximate machine weight: 11,200 kg
English-language nameplate, operator interface, and manuals
Metric machine scale
| Air Conditioned Electrical Cabinet |
| Hob Arbor Set (Size-Customer Choice) |
| Hydraulic System |
| Magnetic Separator with Large Capacity Chip Box |
| Oil Mist Collector |
| Siemens or FANUC |
| UPS for auto-retract |
| Wet/Dry Cutting System |
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