TG4 Series | JTEKT Machinery North America
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TG4 Series

TG4 Series

The JTEKT TG4 Series is a high-precision universal grinding machine designed with programmable wheelhead indexing for unmatched versatility. With multiple configuration options, the TG4 adapts easily to a wide range of part geometries and production requirements—offering exceptional flexibility for both angular and plain-head grinding.

Engineered to deliver maximum productivity in a compact footprint, the TG4 seamlessly handles complex grinding operations on a single platform, reducing setup time while maintaining consistent accuracy and superior surface finishes.

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Single-Chuck Grinding - Versatile Efficiency

The TG4 Series maximizes throughput and accuracy through a fully integrated one-chuck grinding process. By eliminating the need to reposition or turn the workpiece, this system significantly reduces setup time, enhances concentricity, and maintains consistent part geometry throughout the entire cycle. The result is faster production, improved surface quality, and lower equipment costs—ideal for high-volume manufacturers demanding precision and efficiency in every operation.

 

Single-Chuck Grinding diagram
Simplified Setup

Simplified Setup

The TG4 Series streamlines production with a multi-step machining process that combines several operations into a single setup. This integrated approach reduces the need for secondary equipment, minimizes operator intervention, and shortens total cycle time. By simplifying setup and part handling, the TG4 enhances production efficiency, repeatability, and overall machine utilization, delivering more output with fewer resources.

Ideal Wheel Mounting, Minimal Interference

The JTEKT TG4 Series features an optimized wheel mounting configuration that minimizes obstructions between the wheel, workhead, and tailstock. This intelligent design prevents component interference during grinding, ensuring uninterrupted tool access and smoother part transitions. The result is greater machining flexibility, improved part clearance, and enhanced efficiency when performing complex or multi-angle grinding operations—all while maintaining JTEKT’s signature precision and reliability.

 

Ideal Wheel Mounting diagram
Wheel Mounting Patterns diagram

Wheel Mounting Patterns

The JTEKT TG4 Series offers six distinct wheel mounting configurations, allowing operators to tailor the setup to the specific workpiece geometry, grinding position, and accuracy requirements. Each pattern is designed to optimize accessibility, stability, and surface finish, ensuring the ideal wheel engagement for every grinding application. This versatility enables manufacturers to maximize productivity, extend wheel life, and achieve consistent precision across a wide range of part types.
Stat Bearing diagram

Ultimate Long-Term Accuracy

At the heart of our wheel spindle is the proprietary STAT BEARING. This unique design eliminates all metal-to-metal contact in the bearing to reduce wear. This design also features a highly rigid structure with excellent dampening characteristics, leading to excellent rotational accuracy.

Models & Specifications
Distance Between Centersin (mm) 12.6 (320)
Swing Over TableØ in (mm) 12.6 (320)
Grinding Diameter (Max)in (mm)OD: 8.6 (220) ID: 4.7 (120)
Wheel Surface SpeedSFPM (m/s)8,850 (45)
Distance Between Centersin (mm)24.8 (630)
Swing Over TableØ in (mm)12.6 (320)
Grinding Diameter (Max)in (mm)OD: 8.6 (220) ID: 4.7 (120)
Wheel Surface SpeedSFPM (m/s)8,850 (45)