M7480 Vertical Spindle Surface Grinder with Rotary Table

 1.     M7480/1 Introduction:

This machine is a vertical spindle rotary table surface grinder. It can grind surfaces within a diameter of 800mm (with a maximum height of the workpiece being 350mm) with a surface roughness value (Ra) not exceeding 1.25μm and a parallelism between the ground surface and its base of 0.01mm.

The machine is equipped with an electromagnetic worktable and a vertical grinding head. It efficiently grinds workpieces using the end face of a grinding wheel, making it suitable for rough grinding of rough castings or grinding workpieces with general precision. It is particularly suitable for high-volume production in industries such as automotive, tractor, bearing, and machine tool manufacturing, where it can achieve high productivity.

2. Main specifications and parameters 

2.1 Maximum workpiece size for grinding (diameter × height): φ800×350mm with a new grinding wheel 

2.2 Distance from the center of the worktable to the center of the grinding head: Minimum/Maximum 245mm/725mm 

2.3 Maximum distance from the lower end face of the new grinding wheel to the worktable surface: 350mm 

2.4 Worktable rotation speed (stepless): 5-30 r/min 

2.5 Worktable travel distance: 480mm 

2.6 Worktable travel speed: 3 m/min 

2.7 Grinding wheel dimensions (outer diameter × inner diameter × height): φ500×φ380×150mm 

2.8 Grinding segment dimensions: WT85×100×150×35mm (8 pieces in total) 

2.9 Vertical travel distance of the grinding head: 450mm 

2.10 Rapid travel speed of the grinding head: 0.2m/min 

2.11 Motorized feed speed of the grinding head (stepless): 0.08-1.2 mm/min 

2.12 Vertical travel amount of the grinding head per revolution of the handwheel: 0.5mm

2.13 Vertical travel amount of the grinding head per graduation of the handwheel: 0.005mm 

2.14 Electromagnetic worktable suction range (adjustable): 0-80N/cm 

2.15 Power of the grinding head motor: 30kw 

2.16 Spindle speed of the grinding head: 970r/min 

2.17 Power of the rapid travel motor of the grinding head: 0.75kw 

2.18 Speed of the rapid travel motor of the grinding head: 970 r/min 

2.19 Power/speed of the motorized feed motor of the grinding head: 2.2KW/1400r/min 

2.20 Power of the worktable travel motor: 0.55kw 

2.21 Speed of the worktable travel motor: 1400 r/min 

2.22 Power of the coolant pump motor: 0.45kw 

2.23 Speed of the coolant pump motor: 2800 r/min 

2.24 Power of the worktable rotation motor: 5.5KW 

2.25 Speed of the worktable rotation motor: 1440 r/min 

2.26 Total power of the machine tool: Approximately 36kw 

2.27 Net weight of the machine tool: Approximately 8t 

2.28 Net weight of the machine tool: Approximately 9t 

2.29 Overall dimensions of the machine tool (length × width × height): 2640×1253×2481mm