Cylindrical grinding machine OGC series

workpiecehorizontalCNC

INTRODUCTION
TOPKING OGC series cylindrical grinders are designed for precision external and internal cylindrical grinding with CNC GUI operation. X- and Z-axes are driven by precision ball screws and servo motors. The integrated CNC control with graphical interface simplifies process setup and reduces programming complexity.

CAPACITY
Swivel Over Table: Ø320 / Ø420 mm
Distance Between Centers: 1500 mm
Max. Grinding Dia.: Ø300 / Ø400 mm
Max. Grinding Length: 1500 mm
Grinding Wheel: Ø405 x 50 x Ø127 mm

MACHINE FEATURES

• USER-FRIENDLY OPERATION SYSTEM : Built-in CNC with GUI guides operators to split complex parts into sequential grinding operations; process editing and dressing are done numerically without manual G/M code programming.
• RIGID MACHINE BASE : Reinforced structural design improves machine rigidity compared with lightweight concepts.
• HYDROSTATIC LUBRICATION SYSTEM : Slideways of table and wheelhead use automatic hydrostatic lubrication for smoother movement and improved feed precision.
• WHEELHEAD CONSTRUCTION : G.W. spindle manufactured from alloy steel SNCM-220 with normalization, quenching, carburizing and cryogenic treatments, followed by precision grinding and mirror finishing; surface hardness ≥ HRC62° to minimize deformation and wear.
• WORKHEAD AND TAILSTOCK : Precision bearings on work spindle; servo-driven workhead with infinitely variable speed; fixed-type spindle for stability; tailstock with oil-bath lubrication and oil gauge for monitoring.
• DIAMOND TOOL HOLDER : Tailstock-mounted diamond holder available; compatible with multiple dressing devices to suit component needs.

GRINDING CYCLE
Representative grinding cycles and dressing diagrams are provided to support process planning.

STANDARD ACCESSORIES

• CNC Controller (Mitsubishi) x 1 set
• Grinding Wheel and Flange x 1 set
• Carbide Tipped Work Centers (2 pcs/set) x 1 set
• Diamond Tool Holder (tailstock mounted type) x 1 set
• Linear Scale for X-axis x 1 set
• Grinding Wheel Inverter x 1 set
• Electric System x 1 set
• Fully Enclosed Splash Guard x 1 set
• Lubrication System x 1 set
• Coolant System x 1 set
• Work Lamp x 1 set
• Tools (Leveling pad) and Tool Box x 1 set

OPTIONAL ACCESSORIES

• Internal Grinding Attachment (incl. one spindle and G.W. inverter)
• Hydraulic Tailstock
• Cam-locked Driving Dogs
• Work Holder 2 pcs/set
• 2-point Steady Rest
• Adjustable 3-point Steady Rest
• Adjustable 3-jaw Scroll Chuck
• Adjustable 4-jaw Scroll Chuck
• Wheel Balancing Stand and Arbor
• Auto. Grinding Wheel Balancer
• Spare Grinding Wheel and Flange
• Roller Dresser Device
• Touch Probe Gauge
• Auto. In-Process Gauge
• Gap Control
• Magnetic Coolant Separator
• Paper Filter
• Oil Mist Collector

TECHNICAL SPECIFICATIONS

• Swing Over Table: Ø320 mm / Ø420 mm
• Distance Between Centers: 1500 mm
• Max. Grinding Diameter: Ø300 mm / Ø400 mm
• Max. Grinding Length: 1500 mm
• Max. Load Held Between Centers: 100 kg / 150 kg
• Center Height (from table to center tip): 160 mm / 210 mm
• Grinding Wheel Size (O.D. x Width x I.D.): Ø405 x 50 x Ø127 mm
• Grinding Wheel Linear Velocity: 45 m/sec
• Worktable Swiveling Angle: -3° ~ +8°
• Workhead Swiveling Angle: -30° ~ +90°
• Workhead Center Taper: MT No. 4
• Spindle Speed: 10 ~ 300 rpm
• Max. Load of Spindle (tool holder included): 35 kg (max. length: 150 mm)
• Tailstock Center Taper: MT No. 4
• Tailstock Center Moving: Manual type
• Tailstock Stroke: 25 mm
• X-axis Travel Max.: 250 mm
• X-axis Rapid Feedrate Speed: 6000 mm/min
• X-axis Auto Feeding Speed: 0.001 ~ 2000 mm/min
• X-axis Min. Feeding Setting: 0.001 mm
• Z-axis Travel Max.: 1805 mm
• Z-axis Rapid Feedrate Speed: 6000 mm/min
• Z-axis Auto Feeding Speed: 0.001 ~ 2000 mm/min
• Z-axis Min. Feeding Setting: 0.001 mm
• Drive Motors - Grinding Wheel Spindle: 3.75 kW (5.5 kW)
• Drive Motors - Workhead Spindle Motor (servo): 1.8 kW (AC servo)
• Drive Motors - Wheelhead Feed X-axis (servo): 1.5 kW (AC servo)
• Drive Motors - Table Feed Z-axis (servo): 3.5 kW (AC servo)
• Wheel Spindle Lubrication Pump: 0.18 kW
• Lubrication Oil Pump: 0.37 kW
• Coolant Pump: 0.18 kW
• Wheel Spindle Lubrication Oil Tank: 18 L
• Lubrication Oil Tank: 22 L
• Machine Dimensions: 6100 x 2470 x 2306 mm
• Net Weight: 4800 kg / 5000 kg
• Center Height (from floor to center tip): 1095 mm / 1145 mm
• Note: * Specifications & dimensions are subject to change without notice.