EMAG UG Series
Image: emag.com, EMAG
Key Specifications
X Travel
Z Travel
grinding length range
max workpiece weight
od spindle power
grinding wheel size
How much does the EMAG UG Series 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 UG Series is a family of universal cylindrical grinders sold in four grinding lengths: 400 mm for the UG 400, 630 mm for the UG 630, 1000 mm for the UG 1000 and 1500 mm for the UG 1500. Across the range EMAG lists center heights of 175 / 225 mm (7 / 9 in), workpieces up to 120 kg (264.5 lb) and a direct-drive motor spindle of 7.5 / 11 kW (10 / 15 hp) for external grinding.
The defining feature is the B-axis, which swivels -15 to +225 degrees and positions to plus/minus 2 arc-seconds. On a universal grinder that swivel is what lets outside diameters, faces and bores be finished in one clamping, because the external wheel and an internal spindle can each be turned to the work. EMAG backs the range with accuracy figures of 0.5 micrometers roundness and < 1 micrometer concentricity, which is the class of work for bearing seats and precision spindles.
The page lists a 500 x 63 mm (19.7 x 2.5 in) grinding wheel and a maximum peripheral speed of 50 m/s. The UG 400 brochure gives a 500 x 40 (50ROS) x 203.2 mm (20 x 1.5 (50ROS) x 8 in) wheel at 60 m/s for that model, so wheel width and speed should be read per model rather than for the family.
Travel figures need the same care. The series page gives 320 mm (12.5 in) of X and 1,240 mm (49 in) of Z, while the longest model grinds 1,500 mm (59 in); one Z figure cannot cover every length, so ask for the stroke of the model you are buying. The control is FANUC 0i-TF Plus, with FANUC 31 iB Plus as an option.
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Length Range | 400 - 1,500 mm (15.7 - 59.1 in) depending on model |
| Max Workpiece Weight | 120 kg (264.5 lb) |
| OD Spindle Power | 7.5 / 11 kW (10 / 15 hp) |
| Grinding Wheel Size | 500 x 63 mm (19.7 x 2.5 in) |
| Max Peripheral Speed | 50 m/s |
| B Axis Swivel | -15 to +225 degrees |
| B Axis Positioning Accuracy | plus/minus 2 arc-seconds |
| Roundness Accuracy | 0.5 micrometers |
| Concentricity Accuracy | < 1 micrometer |
| Spindle Type | Direct-drive motor spindle |
| CNC Control | FANUC 0i-TF Plus (FANUC 31 iB Plus optional) |
| Max Grinding Length | 1,500 mm (59 in) |
| Center Height | 175 / 225 mm (7 / 9 in) |
| Z-Axis Travel | 1,240 mm (49 in) |
| X-Axis Travel | 320 mm (12.5 in) |
| Grinding Length by Model | UG 400: 400 mm; UG 630: 630 mm; UG 1000: 1000 mm; UG 1500: 1500 mm |
Specifications sourced from emag.com — verified 2026-10-03
Strengths & Limitations
Strengths
- Four grinding lengths from 400 - 1,500 mm (15.7 - 59.1 in) on one machine concept
- B-axis swivel of -15 to +225 degrees, positioned to plus/minus 2 arc-seconds
- Listed accuracy of 0.5 micrometers roundness and < 1 micrometer concentricity
- Direct-drive motor spindle for external grinding at 7.5 / 11 kW (10 / 15 hp)
- Workpieces up to 120 kg (264.5 lb)
Limitations
- Maximum peripheral speed on the series page is 50 m/s, so high-speed CBN work needs checking per model
- The listed Z travel of 1,240 mm (49 in) is shorter than the 1,500 mm (59 in) grinding length, so travel must be confirmed per model
- Center height stops at 225 mm (9 in), which caps the swing for large-diameter parts
- FANUC 31 iB Plus is an option, not the standard control
Best For
Frequently Asked Questions
01
Four, named by grinding length: the UG 400 (400 mm), UG 630 (630 mm), UG 1000 (1000 mm) and UG 1500 (1500 mm). They share the B-axis concept and the control, with center heights of 175 / 225 mm (7 / 9 in) and spindle power of 7.5 / 11 kW (10 / 15 hp).
02
Roundness of 0.5 micrometers and concentricity of < 1 micrometer, with the B-axis positioning to plus/minus 2 arc-seconds. These are EMAG's figures for the series; ask how they are measured and on which part before using them in an acceptance test.
03
The direct-drive external grinding spindle is listed at 7.5 / 11 kW (10 / 15 hp). The page does not say which models carry which rating; the UG 400 brochure gives 7.5 kW (10.1 hp) for that model.
04
The series page lists a 500 x 63 mm (19.7 x 2.5 in) wheel and a maximum peripheral speed of 50 m/s. The UG 400 brochure lists a 500 x 40 (50ROS) x 203.2 mm (20 x 1.5 (50ROS) x 8 in) wheel at 60 m/s, so confirm wheel width and speed for your model.
Videos
EMAGLLC
EMAG
