Machine Comparison
JTEKT e-420H vs JTEKT e-500H
JTEKT vs JTEKT · CNC Grinding Machines
Summary
The JTEKT e-420H and JTEKT e-500H are both from JTEKT's cnc grinding machines lineup, making this a common upgrade or lineup decision for shops already invested in the JTEKT ecosystem. These machines are closely matched across most specifications, making the decision more about specific feature priorities, dealer support, and your existing shop ecosystem than raw spec advantages. Both machines are proven performers in production environments and represent solid investments for shops in the market for a cnc grinding machine.
Specifications Comparison
| Specification | JTEKT e-420H | JTEKT e-500H |
|---|---|---|
| Control | JTEKT TOYOPUC | JTEKT TOYOPUC |
| Grinding Type | CNC cylindrical (OD, ID, face) | CNC cylindrical (OD, ID, face) |
| Max Swing | 420 mm (16.5 in) | 500 mm (19.7 in) ▲ |
| Distance Between Centers | 500 mm (19.7 in) | 1,000 mm (39.4 in) ▲ |
| Z Axis Guideway | Hydrostatic | Hydrostatic |
| X Axis Drive | Precision ball screw with backlash compensation | Precision ball screw |
| Wheel Spindle | High-speed for conventional and CBN wheels | High-speed for conventional and CBN |
| Grinding Methods | Plunge, traverse, angular, taper | Plunge, traverse, angular, taper, profile |
| Wheelhead Config | Multi-spindle option (OD + ID) | Multi-spindle option (OD + ID) |
| In Process Gauging | Yes, with automatic size compensation | Yes, automatic size compensation |
| Thermal Compensation | Active thermal displacement correction | Active thermal displacement correction |
| Machine Weight | 5,000 kg (11,023 lb) approx. | 6,500 kg (14,330 lb) approx. ▲ |
| Price Range | $250,000 - $400,000 (new) ▲ | $300,000 - $500,000 (new) |
Advantages
JTEKT e-420H
- More competitive pricing at $250,000 - $400,000 (new) compared to $300,000 - $500,000 (new)
- Backed by JTEKT's dealer and service network for parts and support
- Automotive manufacturers grinding crankshafts, camshafts, and transmission components
JTEKT e-500H
- Superior max swing at 500 mm (19.7 in) vs 420 mm (16.5 in)
- Superior distance between centers at 1,000 mm (39.4 in) vs 500 mm (19.7 in)
- Superior machine weight at 6,500 kg (14,330 lb) approx. vs 5,000 kg (11,023 lb) approx.
Verdict
This is a close matchup. The JTEKT e-420H and JTEKT e-500H trade advantages across different specifications, making neither a clear winner on paper alone. Your decision should come down to practical factors: which dealer is closer, which control system your operators already know, what tooling ecosystem you're invested in, and which machine's specific strengths match your highest-volume work. Get quotes on both, run test cuts with your actual parts if possible, and factor in long-term service and support costs.