The GC20Mi-63 by JTEKT Toyoda is a high-speed CNC Camshaft Grinding Machine designed for high productivity and the stable, high-accuracy grinding of automotive camshafts.

The GC20Mi-63 is part of JTEKT’s GC series, renowned for its flexibility and speed. This model is a CBN-capable machine that is compact, yet delivers high precision grinding, making it a cost-competitive solution for production. It is engineered with the automotive industry in mind. It features the JTEKT original and patented TOYODA STAT BEARING and floating plate, ensuring the wheel spindle’s durability and high accuracy by eliminating metal-to-metal contact.

Key to its performance is the advanced motion system. It employs a highly responsive wheelhead feed mechanism using a static pressure slide way and linear motor drives. This system is virtually free from lost motion and backlash, allowing for superior “chasing” and consistent, accurate grinding of concave profile cam lobes. The high-response wheelhead and servo system promise high-quality pin and journal grinding surfaces.

The GC20Mi-63 offers an extended capacity for longer camshafts compared to other models in the series. It can be equipped with a direct drive system for wheel speeds up to 160 meters per second. Shop owners have the option of a CBN wheel to maximize grinding efficiency, and operators can easily control the process through the JTEKT Machinery GC50 controls.

Key Specifications:

• Type: High Speed Camshaft Grinder
• Distance Between Centers: 24.8 inches (630 mm)
• Swing Over Table: 12.6 inches (320 mm)
• Maximum Grinding Diameter: 11.8 inches (300 mm)
• Standard Wheel Surface Speed: 23500 SFPM (120 m/s) with optional speeds up to 160 m/s
• Controls: Toyoda GC50
• Features: NC quill workhead for high-accuracy rotational adjustments and profiling
• Primary Application: Grinding cam lobes and journals on longer automotive camshafts in mass production environments.