What does the TZ251 specification cover?
The reviewed TZ251 specification lists turning and drilling limits alongside spindle and driven-tool speeds. The parameter table below presents selected documented values, not a complete machining-process or supplied-equipment specification.
- Maximum machining diameter: 26 mm.
- One-time machining length: three times the bar diameter without a guide bush, or 220 mm with a guide bush.
- Main-spindle and sub-spindle maximum speeds are listed separately at 8000 rpm each.
- Maximum front drilling diameter: 12 mm; maximum side driven-tool speed: 6000 rpm.
How should the machine presentation be interpreted?
The cover is a source-derived TZ-series bare-machine illustration used to explain the machine arrangement. It is not a photograph of a specific supplied machine, not an engineering drawing or a performance test. Confirm the required supplied configuration during application review.
What should you send for application review?
Send the workpiece drawing, material grade, bar diameter, required machining length, tolerances, operations and production volume. Include the destination country and electrical requirements so the team can review the application and proposed configuration. Request a quote for your part, or explore the machine catalogue.
Common TZ251 selection questions
What is the maximum machining diameter?
The reviewed TZ251 specification states 26 mm. Check the actual part geometry and workholding requirements with the team before choosing a machining setup.
Is the one-time machining length always 220 mm?
No. The specification states 220 mm with a guide bush. Without a guide bush, it states three times the bar diameter. Preserve this distinction when reviewing the part.
Are the main and sub-spindle speeds the same?
Each has a documented maximum speed of 8000 rpm. The side driven-tool limit is separate at 6000 rpm. These maxima are not prescribed cutting speeds for every material or operation.
Does the bare-machine illustration prove the exact supplied configuration?
No. It is a TZ-series presentation, not an exact-unit photograph or proof of included equipment. Confirm the supplied configuration against the application requirements.
What information is needed to discuss a TZ251?
Provide the drawing, material grade, bar diameter, machining length, tolerances, operations, production volume, destination and electrical requirements. These details support a part-specific review.