The GF32Mi-35 by JTEKT Toyoda is a high-precision, single-wheel CBN Crankshaft Grinding Machine engineered for accuracy and high productivity in grinding automotive and small industrial crankshafts.

The GF32Mi series represents the latest generation of crankshaft pin grinders, featuring a linear motor drive for high-response wheelhead feed. This system, combined with a hydrostatic slide way and a lightweight wheelhead, achieves rapid and highly accurate feed mechanisms without motion loss or backlash. The high-response servo system further enhances the accuracy and quality of the pin grinding surface.

The machine’s foundational accuracy is guaranteed by JTEKT’s core technologies: the patented TOYODA STAT BEARING and a floating plate, which deliver high-rigidity performance and long-term stable precision by eliminating bearing wear. The machine’s bed is developed with a 3-point support structure that minimizes the influence of ground change and reduces thermal displacement, ensuring steady machining accuracy over long periods.

Designed for high efficiency, the GF32Mi-35 includes features that dramatically reduce non-cutting time and changeover complexity. It supports automatic center distance adjustment to handle drive section diameter differences and offers a wide range floating chuck. Furthermore, the inclusion of an auto-sizing amplifier in the high-response servo system allows for optimum feed control and contributes to improved dimension accuracy. The machine is controlled by the high-reliability TOYOPUC-GC70 CNC system, which also simplifies wheel replacement procedures.

Key Specifications:

• Type: High Precision Single Wheel CBN Crankshaft Grinder
• Distance Between Centers: 13.8 inches (350 mm)
• Swing Over Table: 12.6 inches (320 mm)
• Maximum Grinding Diameter: 2.7 inches (70 mm)
• Wheel Surface Speed: Capable of high-speed grinding up to 120 meters per second (m/s).
• Wheelhead Drive: Single Linear Motor Wheelhead on Hydrostatic Slide
• Controls: TOYOPUC-GC70 CNC
• Primary Application: High-accuracy grinding of crank pins and main journals on small to medium automotive and industrial engine crankshafts.