EMAG SN 204
Image: cdn.emag.com, EMAG
Key Specifications
X Travel
Z Travel
Max Workpiece ⌀
max workpiece length
x axis guideway
How much does the EMAG SN 204 cost?
Estimated price range
Our best estimate for a cnc grinding machine in this class — not a quote from EMAG. Configuration moves it a long way.
Overview
The EMAG SN 204 is a grinding machine from EMAG's out-of-round grinding range, rated for workpieces up to 380 mm (15 in) in diameter and riding on 380 mm (15 in) of X travel with a hydrostatic X-axis guideway. EMAG presents it on a single page together with the SN 208, under one shared table.
That shared table is the first thing to understand. Two of its rows carry paired values: maximum workpiece length reads 600 / 950 mm (23.5 / 37.5 in) and Z travel 1,000 / 1,600 mm (39.5 / 63 in). Nothing on the page assigns either value to either model, so a buyer should get the length and Z stroke of the specific SN 204 being quoted in writing rather than assume it is the shorter pair.
The hydrostatic X guideway is the feature that suits the machine to non-round work. In out-of-round grinding the infeed axis moves back and forth continuously as the part turns, and a slide floating on pressurised oil has no stick-slip at those small reversals and damps vibration well. Next to the HG 204, a round-part external grinder that lists 360 mm (14 in) of X and 1,000 mm (39.5 in) of Z, the SN 204 has the longer cross stroke.
No spindle, wheel, control or accuracy data appear in the table.
Full Specifications
| Parameter | Value |
|---|---|
| Max Workpiece Diameter | 380 mm (15 in) |
| Max Workpiece Length | 600 / 950 mm (23.5 / 37.5 in) |
| X Axis Guideway | Hydrostatic guideway |
| X-Axis Travel | 380 mm (15 in) |
| Z-Axis Travel | 1,000 / 1,600 mm (39.5 / 63 in) |
Specifications sourced from emag.com — verified 2026-10-03
Strengths & Limitations
Strengths
- Hydrostatic guideway on the X axis, the axis that does the profiling in out-of-round grinding
- Workpiece diameter up to 380 mm (15 in) with 380 mm (15 in) of X travel
- Listed with workpiece lengths of 600 / 950 mm (23.5 / 37.5 in)
Limitations
- The shared table does not say which length or Z travel belongs to the SN 204, so each must be confirmed per quotation
- No grinding spindle power, wheel size or accuracy figure is listed
Best For
Frequently Asked Questions
01
Not in the published table. EMAG lists both on one page with 380 mm (15 in) diameter capacity, 380 mm (15 in) of X, lengths of 600 / 950 mm (23.5 / 37.5 in) and Z travel of 1,000 / 1,600 mm (39.5 / 63 in), without tying the paired values to a model.
02
The X axis carries the wheel in and out while the part rotates, many times per revolution on a non-round profile. A hydrostatic guideway supports the slide on an oil film, so there is no static friction to overcome at each reversal and the slide damps vibration from the cut.
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