JTEKT e-500H

$300,000 - $500,000 (new) Updated 2025-03-15

Key Specifications

Spindle Taper

BT 40

grinding type

CNC cylindrical (OD, ID, face)

max swing

500 mm (19.7 in)

distance between centers

1,000 mm (39.4 in)

z axis guideway

Hydrostatic

x axis drive

Precision ball screw

Overview

The JTEKT e-500H is a larger CNC cylindrical grinding machine in JTEKT's e-series lineup, designed for precision OD, ID, and face grinding of medium to large shaft-type workpieces. With a swing of 500 mm (19.7 in) and longer between-centers distance than the e-420H, it handles larger crankshafts, camshafts, spindles, and tooling components.

The e-500H shares the same core technology platform as the e-420H: hydrostatic Z-axis guideways for frictionless motion, precision ball screw X-axis, high-speed grinding spindle for conventional and CBN wheels, and multi-spindle wheelhead options for combined OD/ID grinding.

The larger work envelope accommodates parts with longer grinding lengths and bigger diameters common in heavy equipment, aerospace, and energy industry applications. The machine supports plunge, traverse, angular, taper, and profile grinding methods.

JTEKT's TOYOPUC control with in-process gauging and thermal compensation provides automated size control. The e-500H includes energy-saving features typical of the e-series including regenerative drives and optimized hydraulic systems.

New JTEKT e-500H machines price $300,000-$500,000 depending on configuration. Competes with Studer S41, Kellenberger KelVaria, and Okuma GP-47N in the larger cylindrical grinding segment.

Full Specifications

Parameter	Value
Grinding Type	CNC cylindrical (OD, ID, face)
Max Swing	500 mm (19.7 in)
Distance Between Centers	1,000 mm (39.4 in)
Z Axis Guideway	Hydrostatic
X Axis Drive	Precision ball screw
Wheel Spindle	High-speed for conventional and CBN
Grinding Methods	Plunge, traverse, angular, taper, profile
Wheelhead Config	Multi-spindle option (OD + ID)
In Process Gauging	Yes, automatic size compensation
Thermal Compensation	Active thermal displacement correction
CNC Control	JTEKT TOYOPUC
Energy Features	Regenerative drives, optimized hydraulics
Machine Weight	6,500 kg (14,330 lb) approx.
Joined	Sep 20, 2023
Messages	6,117
Likes	7,837
Manufacturer	OPS
Model	H.Plus 405
Power Requirement	112 kW
Spindle Taper	BT 40

Specifications sourced from machinio.com — verified 2026-03-28

Strengths & Limitations

Strengths

Larger 500 mm swing and 1,000 mm between centers handles medium to large shafts and spindles
Hydrostatic Z-axis guideway ensures sub-micron surface finishes on larger workpieces
Multi-spindle wheelhead combines OD and ID grinding without re-setup
In-process gauging maintains tolerances automatically across long production runs
Energy-saving e-series features reduce operating costs on continuous production
Supports profile grinding for complex OD geometries beyond simple cylindrical forms

Limitations

$300,000-$500,000 is a significant investment requiring regular grinding work to justify
Larger footprint and weight (6,500 kg) than the e-420H, requiring more floor space
TOYOPUC control is less familiar than Siemens or Fanuc to many grinder operators
Hydrostatic system requires clean, temperature-controlled hydraulic supply
JTEKT's North American grinding service presence is more limited than Studer

Best For

Automotive and heavy equipment OEMs grinding large crankshafts and camshafts Aerospace manufacturers grinding landing gear components and engine shafts Energy industry shops grinding turbine shafts, spindles, and precision rolls Machine tool builders grinding spindle assemblies and precision components Production grinding of medium to large cylindrical parts with sub-micron requirements Shops needing combined OD/ID grinding on larger workpieces in single setup

Frequently Asked Questions

01 What does it cost?

$300,000-$500,000 new depending on configuration and options. Used (2017-2023) $125,000-$275,000.

02 e-420H vs e-500H?

Same technology platform. e-500H has larger swing (500 vs 420 mm), longer between centers (1,000 vs 500 mm), and handles bigger parts. e-500H is physically larger and heavier. Choose based on maximum workpiece size.

03 What surface finish can it achieve?

Sub Ra 0.1 microns with proper wheel selection, dressing, and process parameters. Roundness under 0.5 microns. These specs apply to both conventional and CBN grinding processes.

04 What is profile grinding?

Grinding complex OD shapes beyond simple cylinders -- tapers, radii, shoulders, and contoured profiles using CNC-controlled interpolation. The e-500H supports simultaneous X-Z axis grinding for complex profiles.

05 Energy efficiency features?

The e-series includes regenerative drives that recover braking energy, optimized hydraulic systems that reduce power consumption, and efficient spindle motors. These features can reduce energy costs 15-20% vs previous generation machines.