Enshu GEA480H
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Rapid Traverse
Overview
The Enshu GEA480H is a 480 mm pallet CNC horizontal machining center from Enshu, a Japanese machine tool manufacturer that has specialized in horizontal machining centers for the automotive and precision manufacturing industries since 1938. Enshu's reputation is built around compact, high-rigidity HMC designs with excellent thermal management — machines designed to deliver consistent dimensional accuracy across production shifts in automotive parts manufacturing environments.
The GEA480H's 480 mm square pallet is a slightly larger footprint than the common 400mm pallet class but significantly more compact than the 630mm segment — targeting the gap between small-pallet entry HMCs and full-size 500-630mm machines. This format is well-suited to medium-size automotive components: starter motor housings, differential covers, brake calipers, and transmission covers that fit the 480mm pallet but would be over-provisioned on a 630mm machine.
Enshu's GEA series HMCs use a thermal symmetry design philosophy — the machine structure is designed to be as thermally symmetric as possible so that temperature changes affect all sides equally, minimizing relative displacement between the spindle and workpiece. This approach, combined with Enshu's active coolant temperature control system, sustains dimensional accuracy in production environments where ambient temperature varies between shifts.
At $450,000-$650,000, the GEA480H is positioned in the production HMC segment for automotive and precision manufacturing customers who require Japanese OEM-grade quality at a lower price point than Makino or Matsuura. Enshu's distribution in North America is through specialized dealers with automotive manufacturing application experience.
Full Specifications
| Parameter | Value |
|---|---|
| Pallet Size | 480 x 480 mm (18.9 x 18.9 in) |
| Table Load Capacity | 500 kg (1,102 lb) |
| X-Axis Travel | 670 mm (26.4 in) |
| Y-Axis Travel | 630 mm (24.8 in) |
| Z-Axis Travel | 630 mm (24.8 in) |
| Spindle Speed | 15,000 RPM (20,000 RPM option) |
| Spindle Taper | BIG-PLUS® CAT 40 (OP: BT / HSK) |
| Spindle Motor Power | 22 kW (29.5 hp) |
| Tool Capacity | 60 tools (ATC) |
| Pallet Count | 2 pallets (standard) |
| B Axis Indexing | 1° increments |
| Rapid Traverse Rate | 3543 IPM |
| Positioning Accuracy | ± 0.003 mm |
| CNC Control | Fanuc 31iB |
| Machine Weight | ~13,000 kg (28,660 lb) |
| Metric | Value |
| Pallet | 500mm |
| X Axis Travel | 31.5″ |
| Y Axis Travel | 31.5″ |
| Z Axis Travel | 31.5″ |
| Pallet Capacity | 1100 lbs |
| Spindle Hp | 50 HP |
| Spindle Rpm | 15000 RPM |
| Atc | 60 (OP: 118, 180, 252 & 396) |
| Apc | Dual Rotary |
| Cnc Control | Fanuc 31iMB |
| Dimensions | 232″ x 110″ x 116.3″ |
| Machine | Pallet Size |
| Ge40h | 400mm |
| Ge460h | 400mm |
| Ge480h | 500mm |
| Ge580h | 500mm |
| Ge590h | 630mm |
Specifications sourced from enshuusa.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 480mm pallet hits the gap between 400mm and 630mm segments — right-sized for medium automotive and precision components
- Thermal symmetry design and active coolant temperature control sustains dimensional accuracy across production shifts
- 15,000 RPM (20K option) covers aluminum HSM through hardened steel finishing on the same machine
- 60-tool ATC supports complex automotive component programs without tool capacity limitations
- Enshu's Japanese precision manufacturing reputation for consistent quality in automotive tier-1 supplier environments
Limitations
- 480mm pallet is a non-standard size — fixturing designed for 400mm or 500mm machines may not transfer directly
- Enshu's North American service network is limited versus Makino, Mazak, or Okuma
- 22 kW spindle may be limiting for aggressive cast iron roughing versus 30-50kW spindles in larger HMC classes
- BT40/CAT40 limits maximum tool size for very heavy interrupted cuts compared to BT50 machines
Best For
Frequently Asked Questions
01
Enshu's thermal symmetry design principle positions major structural components — column, spindle head, base, and workholding — as symmetrically as possible around the thermal center of the machine. When temperature changes occur (ambient temperature shifts, spindle warmup, coolant temperature changes), a thermally symmetric structure expands uniformly in all directions, so the relative position of the spindle tip to the workpiece datum changes minimally. An asymmetric design would expand more on one side than the other, causing positional drift. Combined with active coolant temperature control, thermal symmetry is Enshu's approach to long-shift dimensional accuracy.
02
The GEA480H can be equipped with Enshu's pallet pool systems for multiple-pallet automated operation. Because 480mm is not a universal pallet size, fixtures designed for other machines' pallet sizes may require adapter plates. Shops building new Enshu lines typically design fixtures specifically for the 480mm pallet and incorporate standardized work setup points (5-axis datum datums, zero-point clamping systems) that are machine-independent even if the pallet size differs.
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