GL Series | JTEKT Machinery North America
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GL Series

GL Series

The GL Series cylindrical grinding machine is purpose-built for dedicated processes in high-production environments, delivering both speed and precision where efficiency matters most. Engineered with a hydrostatic wheelhead bearing and way system, it provides superior rigidity, smooth movement, and long-lasting accuracy under continuous operation. At its core, the machine integrates JTEKT’s patented STAT® BEARING combined with a floating plate design, eliminating metal-to-metal contact while absorbing vibration to achieve exceptional positioning accuracy and consistent grinding quality over extended production runs.

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Long-Term Accuracy. Built for 24/7 Productivity.

The GL Series is thoughtfully crafted with operator usability at its core, ensuring a smooth and intuitive grinding experience. Its ergonomically designed professional handle provides effortless control of the hydraulic system, delivering machine operation that feels as precise and responsive as an NC-controlled process. 

By blending advanced control design with operator-focused usability, the GL Series empowers manufacturers to achieve both precision and productivity with confidence.
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High Rotational Accuracy and Feed Accuracy

STAT BEARING® sets a new standard in spindle technology by combining hydrostatic and hydrodynamic principles into a single, hybrid design. This innovative approach completely eliminates metal-to-metal contact within the bearing, drastically reducing friction, heat generation, and wear.

The result is a spindle system that maintains peak performance and precision over significantly longer service life compared to conventional spindle bearings. With its ability to support heavy loads, absorb vibration, and deliver ultra-smooth rotation, the STAT BEARING® ensures your grinder operates with unmatched accuracy.

Models & Specifications

GL5i-32GL5i-63GL5i-100GL5i-150
Distance Between Centersin (mm)12.6 (320)24.8 (630)39.4 (1,000)59.0 (1,500)
Swing Over TableØ in (mm)12.6 (320)12.6 (320)12.6 (320)12.6 (320)
Grinding Diameter (Max)in (mm)8.6 (220)8.6 (220)8.6 (220)8.6 (220)
Wheel Surface SpeedSFPM (m/s)11,800 (60)11,800 (60)11,800 (60)11,800 (60)
GL6-32GL6-63
Distance Between Centersin (mm)12.6 (320)24.8 (630)
Swing Over TableØ in (mm)15.7 (400)15.7 (400)
Grinding Diameter (Max)in (mm)11.8 (300)11.8 (300)
Wheel Surface SpeedSFPM (m/s)8,860 (45)8,860 (45)
Optional Wheel Surface SpeedSFPM (m/s)11,800 (60)11,800 (60)
GL7-63GL7-100GL7-160GL7-250
Distance Between Centersin (mm)24.8 (630)39.4 (1,000)63 (1,600)98.4 (2,500)
Swing Over TableØ in (mm)15.7 (400)15.7 (400)15.7 (400)15.7 (400)
Grinding Diameter (Max)in (mm)11.8 (300)11.8 (300)11.8 (300) Optional 15.7 (400)11.8 (300) Optional 15.7 (400)
Wheel Surface SpeedSFPM (m/s)8,860 (45)8,860 (45)8,860 (45)8,860 (45)