1994 Shigiya GU-20/50A Universal Cylindrical Grinder (Serial Number: 040235), equipped with factory and aftermarket enhancements including glass scales, a digital readout (DRO), and a steadyrest, are outlined below:
Core Specifications
Machine Type: Universal Cylindrical Grinder (I.D. / O.D.)
Swing Over Table: 7.87" (200 mm)
Distance Between Centers: 19.69" (500 mm)
Maximum Grinding Diameter: 3.93" (100 mm)
Maximum Load Capacity Between Centers: 44 lbs (20 kg)
Wheelhead & Grinding Wheel
Grinding Wheel Size (O.D. × W × I.D.): 12" to 14" × 1" to 2" × 5" Bore (305 mm × 25 mm × 127 mm)
Wheelhead Swivel: ±30°
Maximum Wheelhead Stroke: 8.5"
Infeed System: Type "A" Automatic Hydraulic Infeed (supports plunge grinding, automatic cycle traverse, and spark-out capabilities)
Wheelhead Spindle Motor: 3 HP to 5 HP
Table & Workhead
Table Swivel Range: +9° to -5° (allows precision taper adjustments via dial indicator/vernier scale)
Longitudinal Table Speed: Variable from 2" to 160" IPM
Workhead Taper: MT No. 3 (or MT No. 2 depending on exact workhead option configuration)
Workhead Speed Range: 77 – 650 RPM (pulley adjustable configuration)
Specialized Configuration & Included Accessories
Linear Feedback System: Equipped with high-precision glass scales coupled to a multi-axis Digital Readout (DRO) for tight-tolerance manual sizing and coordinate verification.
Work Support: Includes a dedicated steady-rest to minimize deflection when grinding long or slender workpieces between centers.
Hydraulics & Cycle Management: Automatic fine feed adjustment, adjustable spark-out timer (0 to 30 seconds), table dwell controls, and hydraulic rapid wheel retraction.
Dimensions: 80" Wide × 80" Deep (2,032 mm × 2,032 mm)
Weight: 2,226 lbs (1,010 kg)
FOB: Wood Dale IL 60191 (can recommend local rigger)
Any questions, please ask.
