About this product
1. 1-axis position indicator
2. Distance between centers: 20-1/2"
3. Max. swiveling dia.: 9-1/2"
4. Max. external grinding length × dia.: 19-11/16" × 7-7/8"
5. Max. internal grinding depth: 4-15/16"
6. Taper MT4 and 5" Jaw chuck
7. Circulating cooling system
8. Suitable for External grinding and internal grinding
1. Precision-ground guide rail ensure maximum accuracy across the entire workpiece length and accommodate high workpiece weights.
2. The adjustable grinding spindle features superior bearings and provides for maximum precision and surface quality.
3. The heavy-duty spindle head swivels 90° to the left and to the right; the work spindle head swivels 3°
4. The machine can grind the inner hole
5. Spindle of the wheel head uses the dynamic pressure bearing spindle of big-tapered telescope-feed and high-precision, which has the high rotation precision and long time maintenance.
6. Grinding wheel feed mechanism uses gear structure, which is flexible and accurate to operate.
7. The hydraulic drive system uses screw feed which is low noise.
8. The speed spindle head runs on precision bearings, assuring greater spindle stability and providing outstanding accuracy for external and internal diameter grinding and face grinding.
Model: | M1420 | |
CAPACITY | ||
Height of Center | 5" | 125mm |
Distance Between Centers | 20-1/2" | 520mm |
Max. Swiveling Diameter | 9-1/2" | 240mm |
Max. External Grinding Length | 19-11/16" | 500mm |
Range of External Grinding Dia. | 13/64" to 7-7/8" | 5 to 200mm |
Max. Internal Grinding Depth (over φ45mm) | 4-15/16" | 125mm |
Range of Internal Grinding Dia. | 1/2" to 3-1/8" | 13 to 80mm |
Max. Load Between Centers | 110 lbs | 50kg |
TABLE | ||
Swivel Angle | +9°, -9° | |
Handwheel Feed per Rotation | 0.393"/rev. | |
WORKHEAD & TAILSTOCK | ||
Workhead Center Taper | MT#4 | |
Workhead Swivel Angle | +90º, -90º | |
Workhead Spindle Speed RPM | 63 / 125 / 250 / 500 RPM | |
Workhead Spindle Rotation | Forward & Reverse | |
Tailstock Work Center Taper | MT#4 | |
Internal Grinding Device Spindle Speed | 12250 / 14848 / 19600 RPM | |
Tailstock Quill Travel | 1" | 25mm |
Max. Load of Spindle | 33 lbs. | 15kg |
WHEELHEAD | ||
Grinding Wheel Size (O.D. x Width x I.D.) |
15-3/4" × 1-9/16" × 8" | 400 × 40 × 203mm |
Grinding Wheel Maximum Peripheral Velocity | 114 ft/sec | 35 m/sec |
Wheelhead Swivel Angle | +3°, -3° | |
Wheelhead Rack Fast Feeding | 1-3/8" | 35mm |
Max. Wheelhead Travel | 2-3/4" | 70mm |
Handwheel Feed per Graduation | Rough:
0.00025" Fine: 0.0001" |
|
Handwheel Feed per Revolution | Rough: 0.05" | |
POWER | ||
Power | Three-phase 220V 60hz 25A | |
Wheel Spindle Motor | 5.4 hp | 4 kw |
Workhead Motor | 1 hp | 0.75 kw |
Hydraulic Pump Motor | 1.5 hp | 1.1 kw |
Coolant Pump Motor | 0.16 hp | 0.125 kw |
Internal Grinding Spindle Motor | 0.7 hp | 0.55 kw |
MACHINE | ||
Packaging Size | 78-3/4"" × 74-3/4" × 74-3/4" | 2000 × 1900 × 1900mm |
Net Weight | 5622 lbs | 2550kg |
Gross Weight | 6174 lbs | 2800kg |
Standard Accessories: |
1. Balancing mandrel |
2. Wheel balancing stand |
3. Three jaw chuck |
4. Internal grinding attachment |
5. Wheel flange |
6. Coolant tank |
7. Stand grinding wheel dresser |