EMAG EMAG HG 208

$450,000 - $750,000 Updated 2026-03-19

Key Specifications

Max Workpiece ⌀

200 mm (7.9 in)

max workpiece length

800 mm (31.5 in)

x axis travel

mmin

z axis travel

mmin

spindle config option 1

B-axis with 2 external spindles, 500 mm max wheel diameter

spindle config option 2

B-axis with 1 external (500 mm) + 2 internal grinding spindles

Overview

The EMAG HG 208 is a multi-spindle CNC external cylindrical grinder scaled up from the HG 204 to handle longer shaft components up to 200 mm in diameter and 800 mm in length. With 1,600 mm of Z-axis travel and 360 mm of X-axis travel, the HG 208 provides the work envelope for grinding longer shafts, camshafts, transmission components, and multi-journal workpieces that exceed the capacity of the shorter HG 204.

Like its shorter sibling, the HG 208 features a modular B-axis turret system with multiple spindle configurations: a dual external spindle setup with wheels up to 500 mm diameter, a mixed configuration with one external spindle plus two internal grinding spindles, or a triple external spindle arrangement with wheels up to 400 mm. This multi-spindle capability enables complete grinding of complex shaft components — OD, ID, shoulder, and angular — in a single clamping, eliminating the accuracy loss from re-fixturing between separate machines.

The machine incorporates absolute measuring systems with linear glass scales in all axes for consistent positioning accuracy, plus in-process gauging control for real-time diameter and shoulder position monitoring. Contact and crash recognition protects the machine and workpiece during production, while an automatic wheel balancing system maintains grinding quality as wheels wear.

The HG 208’s 1,600 mm Z-axis travel opens up applications that shorter grinders simply cannot reach — multi-journal camshafts, long transmission shafts, and complex components with widely-spaced grinding diameters. The machine competes with long-travel production grinders from Schaudt (CamGrind L), Junker, and Studer (S41) for these applications.

New EMAG HG 208 machines typically price between $450,000 and $750,000 depending on spindle configuration, automation, and options.

Full Specifications

Parameter	Value
Max Workpiece Diameter	200 mm (7.9 in)
Max Workpiece Length	800 mm (31.5 in)
X Axis Travel	mmin
Z Axis Travel	mmin
Spindle Config Option 1	B-axis with 2 external spindles, 500 mm max wheel diameter
Spindle Config Option 2	B-axis with 1 external (500 mm) + 2 internal grinding spindles
Spindle Config Option 3	B-axis with 3 external spindles, 400 mm max wheel diameter
Measuring System	Absolute glass scales in all axes
In Process Gauging	OD and shoulder position control
Crash Recognition	Contact and crash detection system
Wheel Balancing	Automatic balancing unit
Grinding Media	Corundum or CBN
CNC Control	CNC (FANUC or Siemens)
Workpiece Dia Max	mmin
Workpiece Length Max	mmin

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

Strengths & Limitations

Strengths

1,600 mm Z-axis travel handles long shaft components and multi-journal workpieces up to 800 mm that shorter grinders cannot accommodate
Multi-spindle B-axis turret with up to three grinding spindles enables complete OD, ID, and angular grinding in a single clamping
In-process gauging, crash recognition, and automatic wheel balancing ensure consistent quality and machine protection during unattended production
Absolute glass scale measuring systems in all axes maintain positioning accuracy across the full 1,600 mm Z-axis travel range
Mixed spindle configuration (external + internal) combines bore and OD grinding on a single machine eliminating re-fixturing for complex parts
Modular platform shares components with the HG 204 reducing spare parts inventory for shops running both models

Limitations

Premium pricing of $450K-$750K reflects the long-travel multi-spindle complexity requiring high-value or high-volume production to justify
Larger Z-axis travel increases the machine footprint compared to the HG 204 requiring more floor space in production layouts
200 mm maximum workpiece diameter limits the machine to shaft-type components as disc and flange parts require different machine platforms
Multi-spindle setup and process development require experienced grinding engineers and are not plug-and-play solutions

Best For

Automotive manufacturers grinding long transmission shafts, camshafts, and crankshaft components requiring multiple grinding operations in a single setup Drivetrain component producers grinding multi-journal shaft assemblies where maintaining concentricity between widely-spaced diameters is critical Aerospace and defense manufacturers grinding long shaft components in hardened steel and superalloys with tight tolerance requirements Production facilities consolidating multiple grinding operations for long shafts onto a single machine to reduce part handling and improve accuracy Shops grinding motor shafts, compressor shafts, and similar components where combined OD and bore grinding eliminates re-fixturing between machines

Frequently Asked Questions

01 What is the difference between the HG 208 and HG 204?

The primary difference is workpiece length capacity: the HG 208 handles parts up to 800 mm long (vs. 400 mm for the HG 204) with 1,600 mm of Z-axis travel (vs. 1,000 mm). Both share the same 200 mm maximum diameter and modular B-axis multi-spindle configurations.

02 What monitoring features does the HG 208 include?

The HG 208 includes in-process gauging control for real-time diameter and shoulder position measurement, contact and crash recognition to protect the machine and workpiece, and an automatic wheel balancing system that maintains grinding quality as wheels wear.

03 Can the HG 208 grind both OD and bore surfaces?

Yes, with the mixed spindle configuration that combines one external grinding spindle with two internal grinding spindles. This enables complete OD, ID, and shoulder grinding in a single clamping.

04 How does the HG 208 compare to the Schaudt CamGrind L?

Both are long-travel production cylindrical grinders. The Schaudt CamGrind L is specifically optimized for camshaft grinding. The HG 208 is more versatile with its multi-spindle B-axis configurations supporting OD, ID, and angular grinding.