Machines for internal cylindrical grinding

CNC Internal OD/ID Grinding Machine

CNC internal grinders offer exceptional precision, ensuring tight tolerances and superior surface finishes.With fully automated operations, these machines significantly reduce cycle times and increase production efficiency.

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CNC internal grinding machine:usage and main specifications

The MW250A/MWD250A internal cylindrical grinder can grind cylindrical holes with a diameter of 150-500 millimeters and conical holes with a small taper, with a grinding depth of 450 millimeters.
This machine tool is mainly suitable for single batch production, and the worktable has hydraulic transmission and can adjust the working speed infinitely. The grinding wheel can be fed in a small amount, and each reciprocating stroke of the worktable causes the grinding wheel to feed once. The workpiece can be adjusted laterally, and the grinding wheel adjustment action is operated by a hydraulic handle, which can continuously adjust the dressing speed.

Technical parameter of CNC internal grinding machine

1. Grinding aperture	￠150-￠500mm
2. Maximum grinding depth	450mm
3. Workpiece rotation diameter
3.1 Inside the hood	￠510mm
3.2 Outer Cover	￠725mm
4. Maximum rotation angle of the bedside	20°
5. Workpiece speed (stepless speed regulation)	28~320r/min
6. Grinding wheel speed	2450、4200r/min
7. End grinding speed	6000r/min
8. Workbench itinerary	800mm
9. Grinding wheel motor power	5.5KW
10. Headrest motor power	0.75KW
11. Power of oil pump motor	0.75KW
12. Cooling pump motor power	0.125KW
13. End grinding motor power	0.75KW
14. Workpiece motor power	3KW
15. Total power of machine tool	11KW
16. Machine tool external dimensions	386016001850
17. Machine weight	5400KG
18. Power supply for machine tools	3N-50HZ 380V
19. Work accuracy
19.1 Inner hole roundness	0.004mm
19.2 Bore cylindricity	0.008mm
19.3 Surface roughness of inner hole	Ra0.32

Applications of CNC Internal Grinders

CNC internal grinders are widely used across various industries for grinding applications that demand high precision and surface finish. Some typical applications include:

Automotive Industry: Grinding of engine components such as connecting rods, pistons, and cylinder liners.
Aerospace Industry: Precision grinding of turbine blades, engine parts, and landing gear components.
Medical Industry: Manufacturing of surgical instruments and medical implants.
Tool and Die Industry: Grinding of molds, dies, and cutting tools.

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