EWAG RS15 CNC Tool Grinding Machine – Year 2003
Worktable size: 155*205mm
X*Y travel: 490*130mm
B-axis rotation angle: 260°
Oscillation size: 0-70mm
spindle speed: stepless
Cross Worktable clamp: 155 x 205mm
Dimension: 1630*1250*1900mm
Specifications
Manufacturer EWAG
Model RS15
Year 2003
Condition Used
EWAG RS15 CNC Tool Grinding Machine – Technical Evaluation (Year 2003)
1. Technical Evaluation Overview
The EWAG RS15 is a CNC tool grinding machine configured for precision grinding of small to medium-sized tools. Based strictly on the provided data, the machine features a worktable size of 155 × 205 mm with identical dimensions for the cross worktable clamp. Linear axis travels are stated as X: 490 mm and Y: 130 mm, supporting compact workholding and short travel grinding operations.
The machine includes a B-axis rotation range of 260°, enabling multi-angle grinding access around the tool. An oscillation size of 0–70 mm is specified, which supports controlled oscillatory grinding motions. The spindle speed is stepless, although no speed range, spindle power, or spindle type is provided and must be verified.
Overall machine dimensions are 1,630 × 1,250 × 1,900 mm. Several critical technical parameters are not stated, including Z-axis travel (if applicable), grinding wheel size and type, spindle power, control system model, achievable accuracy, dressing system, and coolant configuration. These omissions should be addressed before forming a complete technical conclusion.
2. What to Check Before Buying
Given the limited specification set, inspection should focus on the following areas:
Mechanical and axis system:
Smoothness, repeatability, and backlash of the X and Y axes over the full 490 × 130 mm travel range.
Accuracy and rigidity of the B-axis (260° rotation), including indexing precision and locking stability at multiple angles.
Condition of the oscillation mechanism across the full 0–70 mm range, ensuring consistent motion without vibration.
Grinding spindle and tooling:
Condition of the grinding spindle, including bearing noise, thermal behavior, and runout.
Verification of the stepless spindle speed function, including responsiveness and stability under load.
Confirmation of compatible grinding wheel sizes, mounting system, and guarding, as these are not specified.
CNC and electrical system:
Identification and operational status of the CNC control (model and software version not provided).
Availability of machine parameters, backups, and alarm history.
Condition of electrical cabinets, drives, and cooling components appropriate for a 2003-built machine.
3. Typical Industrial Applications
Based on the stated dimensions and axis configuration, the RS15 is technically suitable for:
Precision grinding of cutting tools and small components that fit within the 155 × 205 mm clamping area.
Multi-angle tool grinding operations utilizing the wide B-axis rotation capability.
Applications requiring controlled oscillation during grinding to improve surface finish and tool geometry consistency.
Specific tool types, diameter ranges, and achievable accuracy levels cannot be confirmed without additional technical data.
4. Common Risks in Used Machines
For used CNC tool grinding machines of this category and age, typical risks include:
Spindle wear, which directly affects surface finish and dimensional accuracy.
Axis wear or backlash, particularly in machines used extensively for precision grinding.
Control system limitations or obsolescence, depending on the unidentified CNC platform and software support.
Incomplete documentation, such as missing electrical diagrams, CNC backups, or tooling data.
5. Maintenance and Service Considerations
With no service history provided, maintenance considerations are limited to general technical aspects:
Regular inspection of spindle condition, axis lubrication, and oscillation mechanisms is essential for maintaining grinding accuracy.
Grinding wheels, dressing components (if installed), and workholding fixtures should be checked for compatibility and wear.
CNC parameters and machine-specific data should be backed up before operation.
Any maintenance or refurbishment planning should be based on an on-site inspection and functional testing rather than assumptions about service intervals or spare part availability.
