Major Machine Specifications
| Single-ended taper Grinding wheel spindle | Double-ended taper Grinding wheel spindle | |||
| CNJ2u-S | CNJ2u-H | CNJ2u-W | ||
| Maximum Tool Size for Grinding | Overall tool length | max.450mm | ||
| Tool diameter | max.φ250mm | |||
| Grinding wheel spindle | Spindle nose taper | ISO No. 30 Single-ended | HSK-A50 Single-ended automatic clamping | ISO No. 30 Double-ended |
| Spindle motor | 5.0/4.0kW | 15.0/11.0kW | 7.5/6.0kW | |
| Spindle speed | 2000〜8000min-1 | |||
| Work Head | Spindle nose taper | ISO No.50 | ||
Machine Body Structure
Double-Ended Tapered Grinding Wheel Spindle Opens New Horizons in Grinding
Grinding wheels can be mounted on both ends, and a minimized protrusion from the grinding wheel spindle nose enhances rigidity and runout precision. Accordingly, it enables to use different griding wheels that matches with various grinding conditions. It also expands the types of tools enable to be processed by avoiding interference with the tool during grinding. Furthermore, it shortens the setup time.
HSK Grinding Wheel Spindle Enhances Grinding Efficiency
Adequate rigidity and runout precision are provided by a grinding wheel spindle that is automatically clamped on two ends, boosting grinding precision while shortening the setup time. This model has the highest output in the series, helping to achieve higher grinding efficiency.
Single-Ended Tapered Basic Specs. ・S Grinding Wheel Spindle
This is the standard spec. grinding wheel for the CNJ2u series. It is a single-ended tapered grinding wheel capable of fully automatically producing and regrinding a wide variety of cutting tools with one chucking operation.
Types of Grinding Wheel Spindle Specifications
| Grinding wheel spindle | SGrinding wheel spindle | WGrinding wheel spindle | HSKGrinding wheel spindle |
| Model | CNJ2u-S | CNJ2u-W | CNJ2u-H |
| Spindle nose taper |  Single-ended taper |
 Double-ended taper |
Single-ended taper |
| ISO No.30 manual clamp | ← | HSK-A50 automatic clamp | |
| Output | 5.0/4.0kW | 7.5/6.0kW | 15.0/11.0kW |
| Wheel spindle speed | 2000〜8000 * 3000〜12000min-1 |
← | 2000〜8000 * 3000〜12000 * 5000〜20000min-1 |
* indicates options
Stable Grinding Precision
Enhanced End R Grinding Precision
The U axis has a unique structure that allows the work head to move back and forth on the swivel arm. This structure allows the R center to be aligned on the swivel axis at all times, regardless of the tool length.
Accordingly only the work head swivel axis (W axis) and work spindle rotation axis (A axis) need to be controlled for R peripheral grinding, and it minimizes factors that have adverse effects on grinding precision.
Extensive Thermal Deformation Measures
Adequate measures have been implemented to control thermal
deformation, including the adoption of oil mist lubrication to minimize the amount of heat generated by the grinding wheel spindle bearings, and separately mounting the grinding wheel spindle automatic temperature controller on the floor in order to prevent heat transfer to the machine.
In addition, the grinding fluid automatic temperature controller (option) minimizes errors in grinding dimensions due to grinding heat and changes in the temperature of the grinding fluid. It maintains stable grinding precision.
Structure Supports Wide Range of Grinding Performance
Since the bed, column, table and other components have more than an adequate level of rigidity, the machine maintains consistently stable grinding performance. The unique design is based on years of experience to allow the CNC controlled axes to flexibly accommodate grinding of a diverse range of multiple types of tools.
Programming System MSPS-Ⅱ
Highly flexible programming system
Programming system with refined easy-to-use functions flexibly responds to grinding of a wide variety of tool shapes.
