SMEC HMC-630
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Table Size
Overview
The SMEC HMC-630 is a 630mm pallet horizontal machining center from SMEC, the Korean machine tool brand built on Doosan-group engineering and manufacturing heritage. Designed for production shops requiring multi-sided prismatic machining at high throughput, the HMC-630 delivers the core productivity advantages of horizontal spindle orientation — gravity-assisted chip evacuation, 4-sided pallet access, and high-volume material removal — in a platform positioned at a competitive price point relative to equivalent Japanese horizontal machining centers.
The HMC-630 is built on a T-type column architecture with the workpiece mounted on a rotary B-axis pallet table. The 630 x 630 mm pallet accommodates tombstone-style fixtures for batch production of smaller parts or dedicated workholding for larger prismatic components, with a 750 kg pallet load rating supporting steel and cast iron fixture assemblies. The B-axis standard configuration provides 1-degree indexing; a full-contouring B-axis option is available for 4-axis simultaneous work. An automatic 2-pallet changer (APC) is standard, enabling continuous part loading and unloading while the machine cuts.
The horizontal BT50 spindle runs to 12,000 RPM with 26 kW of continuous power, providing the high spindle torque critical for productive steel and cast iron removal in horizontal machining applications. A 60-tool chain-type ATC is standard, with options to expand to 90 or 120 tool positions for complex programs and lights-out production. Through-spindle coolant is standard on the HMC-630, supporting deep-hole drilling and high-efficiency milling through the spindle and toolholder.
SMEC equips the HMC-630 with Fanuc 31iMB control, providing the full range of horizontal machining center capabilities including 4-axis simultaneous interpolation, pallet management, and factory automation interface support. The machine is equipped with full chip guarding, chip conveyor, and coolant management designed for the high chip volumes characteristic of horizontal machining center production.
The SMEC HMC-630 competes with the DN Solutions DH-630, Hyundai WIA HS-630, and Makino a61nx in the 630mm HMC class. SMEC's Doosan-group heritage and competitive pricing position the HMC-630 as a lower-cost alternative to both Japanese horizontal machines and the full DN Solutions DH lineup. Typical street pricing runs from $380,000 to $550,000 depending on pallet configuration, automation level, and optional features. For production shops and automotive suppliers seeking proven Korean engineering in a 630mm horizontal machining center at a price point below Japanese alternatives, the HMC-630 presents a well-specified and cost-competitive production platform.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 800 mm (31.5 in) |
| Y-Axis Travel | 800 mm (31.5 in) |
| Z-Axis Travel | 900 mm (35.4 in) |
| Table Size | 630 x 630 mm pallet (24.8 x 24.8 in) |
| Max Table Load | 750 kg (1,653 lb) |
| Max Spindle Speed | 12,000 RPM |
| Spindle Motor Power | 26 / 22 kW (35 / 30 hp) |
| Spindle Taper | No. 50 (BT50 / CAT50) |
| Feed Rate Max | 60,000 mm/min X/Y/Z (2,362 ipm) |
| Tool Changer Capacity | 60 tools (chain-type ATC; 90 / 120 tool options) |
| CNC Control | Fanuc 31iMB |
| Machine Weight | Approx. 24,000 kg (52,911 lb) |
Strengths & Limitations
Strengths
- Horizontal spindle orientation with gravity chip evacuation improves surface finish, tool life, and chip management in steel and cast iron production versus vertical machining
- 26 kW BT50 spindle provides the torque and power needed for aggressive material removal in the demanding workpiece materials — cast iron, hardened steel, aluminum structural parts — common in horizontal machining applications
- 60 m/min rapid traverse on all axes delivers fast positioning between features on complex programs, reducing non-productive time in multi-feature parts
- Standard 2-pallet APC enables continuous part loading and maximizes spindle utilization without machine downtime between workpieces
- Doosan-group manufacturing standards and Fanuc 31iMB control provide a proven reliability baseline with broad automation and cell integration capability
Limitations
- SMEC's horizontal machining center dealer and service network is less established than DN Solutions or major Japanese brands in most markets outside Korea
- Capital cost ($380,000+) requires clear productivity and ROI justification through reduced setup time, multi-sided access, or production volume that cannot be served by VMCs
- BT50 tooling system creates tooling cost and inventory incompatibility for shops standardized on BT40 across their VMC fleet
Best For
Frequently Asked Questions
01
The standard HMC-630 B-axis provides 1-degree incremental indexing, enabling 4-sided, 8-sided, and other common prismatic part orientations. An optional full-contouring B-axis with 0.001-degree resolution is available for shops requiring simultaneous 4-axis interpolation — for example, helical milling, angled bore drilling, or contoured surface work that cannot be achieved through simple indexing. The Fanuc 31iMB control supports both indexed and simultaneous 4-axis modes.
02
Both machines are 630mm pallet horizontal machining centers from within the Doosan corporate group, sharing fundamental engineering standards and manufacturing heritage. The DN Solutions DH-630 benefits from the full global DN Solutions dealer and service network, which is more comprehensive in North America and Europe. The SMEC HMC-630 is typically positioned at a lower price point. Specification differences between comparable configurations are relatively minor. Shops with established DN Solutions service relationships should weigh the value of that continuity; buyers comparing fresh should obtain regional pricing and dealer support assessments for both.
03
Yes. In addition to the standard 2-pallet APC, SMEC offers multi-pallet pool configurations for the HMC-630 to support higher levels of automation and unmanned production. Multi-pallet systems with 4, 6, or more pallets can be integrated to allow extended lights-out operation, complex job sequencing, and multi-part program management. Shops planning to build an automated horizontal machining cell should specify their automation requirements early in the procurement process.
04
The SMEC HMC-630 achieves a chip-to-chip time of approximately 4 seconds with the 60-tool ATC, which is competitive for the 630mm HMC class. Combined with the 60 m/min rapid traverse, the machine minimizes non-productive time between cutting operations in complex multi-tool programs. Pallet change time with the 2-pallet APC is approximately 20–25 seconds, allowing the operator to load the next workpiece with minimal impact on machine utilization.
05
Yes. The HMC-630's 26 kW BT50 spindle and rigid column construction support machining of titanium alloys (Ti-6Al-4V) and nickel-based superalloys at appropriate cutting parameters. Horizontal spindle orientation assists chip evacuation in these difficult-to-machine materials where chip re-cutting is a significant concern. Through-spindle coolant is standard on the HMC-630, providing the high-pressure coolant delivery important for titanium and superalloy machining. Shops running significant aerospace superalloy work should consult with SMEC's distributor regarding recommended cutting parameters and tooling for specific alloys.
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Community Discussions
Community discussion — Buyers beware, stay away from this brand. : r/Machinists - Reddit
Community discussion — PSA STAY AWAY FROM SMEC MACHINES : r/Machinists - Reddit
Community discussion — What do you guys think of this machine? : r/machining - Reddit
Community discussion — CAPTO alternatives? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
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