category: Grinding
Hanji MM7120A / MM7120B High-Precision Horizontal Spindle Rectangular Table Surface Grinding Machine (OEM available)
Key information
Machine overview
Longitudinal Speed (Variable) 2–20 m/min
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Specification
| Details | Table Size (W×L) |
|---|---|
| 200×630 mm | Max Grinding Dimensions (W×H×L) |
| 200×320×630 mm | Max Longitudinal Travel |
| 750 mm | Longitudinal Speed (Variable) |
| 2–20 m/min | Max Cross Travel |
| 220 mm | Cross Feed Speed |
| Continuous: 20–1000 mm/min | Intermittent: 0.2–10 mm per stroke |
| T-Slots (Number × Width) | 1×14 mm |
| Max Load Capacity | 104 kg |
| Distance from Spindle Center to Table | Max 445 mm |
| Rapid Vertical Feed Speed | 450 mm/min |
| Spindle Speed | 1500 / 3000 rpm |
| Vertical Micro Feed | 0.002 mm |
| Grinding Wheel Dimensions (D×W×H) | Φ250×25×Φ75 mm |
| Total Power | 5.19 / 5.79 kW |
| Spindle Motor Power | 2.4 / 3 kW |
| Grinding Accuracy | Parallelism of machined surface to base: 0.003 mm per 300 mm |
| Surface Roughness | Ra0.16 μm |
| Net Weight | 2300 kg |
| Gross Weight | 3000 kg |
| Machine Dimensions (L×W×H) | 1900×1205×1750 mm |
| Packing Dimensions (L×W×H) | 2750×1780×2450 mm |
| 4250×1750×2250 mm | Features |
| Cross Slide Structure | : The machine adopts a cross slide design, minimizing thermal deformation and ensuring stable precision. |
| Hydraulic System | : The table's longitudinal movement is driven by a variable vane pump within a closed hydraulic system, ensuring smooth motion, low noise, and minimal oil temperature rise. |
| Cross Feed Mechanism | : The cross slide uses roller guides, with feed driven by an AC variable frequency motor for stepless speed adjustment, allowing fine intermittent and continuous feeds. |
| Spindle Bearings | : The spindle employs small-hole throttling hydrostatic bearings with high rotational accuracy, achieving superior surface finishes. |
| External Oil Tank | : The MM7120B model features an external oil tank for easy maintenance and replacement of the hydraulic system. |
| Standard Accessories | Electromagnetic Chuck: 1 piece |
| Grinding Wheel and Flange: 2 sets | Wheel Balancing Arbor: 1 set |
| Wheel Balancer: 1 piece | Wheel Dresser (without diamond): 1 set |
| Balancing Weights: 5 pieces | Optional Accessories (Additional Cost) |
| Diamond Wheel Dresser: 1 piece | Product details |
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