TREGO SM 125 Formtool Grinder for Precision Valve Seat Tool Regrinding
The TREGO SM 125 is a compact and precise formtool grinder, designed for professional regrinding of multi-angle valve seat cutting tools.
Compatible with tools from Mira, Serdi, Rottler, Berco, Newen, AZ, and others, it offers versatility, high-quality finish, and ease of use.
DESCRIPTION
The TREGO SM 125 is a professional-grade formtool grinder developed specifically for reconditioning multi-angle valve seat cutting tools and counterbore tools, particularly those of the Mira type. Its robust construction and precise engineering make it an essential machine for any engine rebuilding or cylinder head repair workshop where high-accuracy tool maintenance is required.
At the core of the SM 125 is a fine-grit, Ø 125 mm diamond grinding wheel that operates at 2,770 rpm. This ensures a clean, controlled material removal process and delivers a consistently smooth surface finish. The grinding wheel is easily replaceable, allowing the operator to maintain optimal performance with minimal downtime.
One of the key technical features of this formtool grinder is the adjustable cutting angle, which can be set from 0° to 10° in both positive and negative directions using a graduated dial. This flexibility is crucial when working on different types of cutting geometries. The SM 125 is capable of grinding all three surfaces of the tool bit, even on the longer Mira BB-type tools, thanks to its thoughtful mechanical design that prioritizes both access and stability.
The machine is supplied with a standard toolholder designed for Mira valve seat cutters, but it is also compatible with additional toolholders for Serdi, Rottler, Robins, , Berco, Newen, AZ tools, making it a versatile solution for workshops handling a range of cutting systems. The toolholder provides secure positioning and reliable alignment throughout the grinding process, which contributes to repeatable results and extended tool life.
For improved visibility and operator comfort, the SM 125 includes a built-in LED light that clearly illuminates the grinding area. Additionally, the unit is equipped with a connection port for external dust extraction, helping to maintain a clean working environment and prevent abrasive dust from compromising the machine’s components. The presence of separate switches for the motor and lighting, along with an infeed handwheel for fine adjustment of grinding depth, enhances ease of use and precision.
Powered by a 0.25 kW motor and running on a standard 220 V, 50 Hz single-phase supply, the TREGO SM 125 offers compatibility with typical workshop electrical systems. Its compact footprint, functional design, and reliable performance make it an ideal choice for operators needing an efficient and accurate formtool grinder for valve seat tool maintenance and regrinding applications.
TECHNICAL DATA
| Grinding wheel diameter | Ø 125 mm |
| Rotation speed | 2270 RPM |
| Motor power | 0,25 kW |
| Electrical requirements | 220 V – 50 Hz – 1 Ph |
| Dimensions | 325 × 325 × 210 mm |
| Weight | 14 Kg |
STANDARD EQUIPMENT
- Toolholder for Mira-type valve seat cutting tools
- Cutting angle adjustment system from 0° to 10°, positive and negative
- Fine-grit diamond grinding wheel Ø 125 mm
- Integrated LED work light
- Connection port for dust extraction
- Micrometric handwheel for depth adjustment
OPTIONALS AND ACCESSORIES
- Special adapter for non-standard inserts
