YCM SV Series VMC
Key Specifications
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Spindle Power
Accuracy
Overview
The YCM SV Series is Yeong Chin Machinery Industries' general-purpose vertical machining center family, covering X-axis travel configurations from 760 mm through 1,080 mm — the SV76A, SV108A, and intermediate models — all built on the same Meehanite iron base and column architecture. The SV Series targets contract manufacturers, job shops, and production facilities needing reliable large-table VMC capability at Taiwanese pricing. YCM has established the SV Series as a stable, well-supported mid-to-large VMC platform across export markets in North America, Europe, and Asia.
SV Series machines use a fixed-column, moving-table design with linear roller guideways on all three axes, providing the combination of high rapid traverse speed and load capacity appropriate for the medium-to-heavy cutting the SV Series is designed around. The column structure is a thick-wall Meehanite iron casting with internal ribbing designed to resist deformation under heavy cutting forces and maintain geometric accuracy over the machine's service life. All critical surfaces are precision ground and hand-scraped at the factory before shipping.
The spindle options across the SV Series range from a 10,000 RPM BT 50 unit (standard on larger models) to a 12,000 RPM BT 40 unit on mid-size configurations, with spindle power from 15 kW to 22 kW depending on model and configuration. The 30-tool arm-type ATC provides adequate capacity for the complex multi-feature parts typical of mold, fixture, and structural component programs. YCM equips SV Series machines with Fanuc 0i-MF Plus as standard, with Mitsubishi M80 available as an alternative for shops standardized on that control platform.
Pricing across the SV Series range spans approximately $85,000 to $160,000 depending on travel configuration, spindle specification, and options. In export markets, YCM supports the SV Series through regional distributors with parts stocking, applications support, and field service. The SV Series competes with the Haas VF-4 and VF-5, the Doosan DNM 5700 and DNM 6700, and the Mazak VCN-530C in the large-travel general-purpose VMC segment — markets where YCM consistently wins on specifications-to-price ratio.
Full Specifications
| Parameter | Value |
|---|---|
| Travel X Range | 760–1,080 mm (29.9–42.5 in) depending on model |
| Y-Axis Travel | 560–600 mm (22.0–23.6 in) depending on model |
| Z-Axis Travel | 560–600 mm (22.0–23.6 in) depending on model |
| Spindle Speed Bt50 | 10,000 RPM (BT 50 large models) |
| Spindle Speed Bt40 | 12,000 RPM (BT 40 mid models) |
| Spindle Motor Power | 15–22 kW (20–30 hp) depending on model |
| Spindle Taper | BT 40 or BT 50 depending on model |
| Guideway Type | Linear roller guideways (all axes) |
| Tool Capacity | 30 (arm-type ATC) |
| Tool Change Time | 2.5 sec (tool-to-tool) |
| Table Size Range | 900 x 560 mm to 1,320 x 600 mm depending on model |
| Max Workpiece Weight | 800–1,200 kg depending on model |
| Rapid Traverse X Y | 36 m/min (1,417 ipm) |
| Rapid Traverse Z | 30 m/min (1,181 ipm) |
| Positioning Accuracy | ±0.005 mm |
| Repeatability | ±0.003 mm |
| CNC Control | Fanuc 0i-MF Plus (Mitsubishi M80 option) |
| Machine Weight Range | 7,500–10,500 kg depending on model |
Strengths & Limitations
Strengths
- Wide travel range (SV76A through SV108A) allows shops to select the exact table size needed without paying for unnecessary capacity — modular approach in a single, proven machine family
- Meehanite iron base and column with precision-ground and hand-scraped surfaces deliver the geometric stability and accuracy that distinguish YCM quality in the Taiwanese VMC market
- Linear roller guideways across all axes balance rapid traverse speed and load capacity for the mixed-material general machining the SV Series is designed for
- Taiwanese-brand pricing delivers BT 50 large-table VMC capability at $110K–$160K — substantially below comparable Japanese machines from Mori Seiki or Okuma
- Fanuc 0i-MF Plus standard control provides universal G-code compatibility and ready integration with standard automation and measurement systems
Limitations
- Linear roller guideways trade some damping capability compared to box-guideway designs — shops doing very heavy interrupted cuts in steel may see more chatter than on box-guide competitors like the Okuma GENOS M560-V
- YCM's North American service infrastructure, while functional, is not as extensive as Haas's nationwide coverage — response times vary by region and can be longer outside major manufacturing corridors
- BT 50 at 10,000 RPM on larger SV Series models limits aluminum high-speed machining efficiency compared to BT 40 or HSK-A63 machines capable of 15,000–20,000 RPM
Best For
Frequently Asked Questions
01
Choose based on the largest part or fixture assembly you need to machine. If your largest parts fit within 760 mm in X and 560 mm in Y, the SV76A provides a smaller footprint and lower cost. If you regularly machine parts above 800 mm in X, or run multi-part fixture setups that extend beyond 900 mm, the SV108A's 1,080 mm X travel and 1,320 mm table are necessary. When in doubt, buy more table than you think you need today — shops consistently report they fill available table length faster than expected as the workload expands.
02
BT 50 is the correct choice for shops doing heavy face milling, large-diameter end milling, and boring in steel, cast iron, and stainless on the SV Series large models. The larger taper provides more drawbar clamping force, higher torque transmission, and better radial rigidity. BT 40 with higher RPM suits shops primarily machining aluminum or light steel where speed and acceleration matter more than maximum torque. The SV76A typically ships in BT 40 configuration; the SV108A is typically BT 50. Confirm the spindle specification with your YCM dealer before ordering.
03
YCM (Yeong Chin Machinery) is one of Taiwan's largest and most experienced machine tool manufacturers, founded in 1954. Compared to Quaser, YCM offers a broader range of machine types and has a larger US distribution network. Compared to Feeler (Fair Friend Group), YCM has stronger brand recognition in North America and Europe. All three Taiwanese builders offer solid quality at competitive prices; differences are often in dealer support quality, parts availability, and specific machine options rather than fundamental quality differences. YCM's Fanuc-standard controls and established North American presence are practical advantages.
04
YCM offers the SV Series with Automatic Pallet Changer (APC) options for lights-out production. The SV Series Fanuc 0i-MF Plus control is compatible with standard robot loading systems via M-code interfaces and Fanuc's robot-to-CNC communication protocol. Through-spindle coolant at 40 or 70 bar is available for automated deep-hole drilling and high-pressure chip flushing. For shops building unmanned production cells, the SV Series with APC provides a practical entry point at a lower capital cost than Japanese alternatives with comparable automation readiness.
05
YCM specifies positioning accuracy of ±0.005 mm and repeatability of ±0.003 mm for the SV Series. In practice, shops consistently report holding ±0.01 mm on turned features and ±0.005 mm on bored hole locations in moderate-production environments. Long-term accuracy retention depends heavily on proper foundation, coolant temperature control, and maintenance. YCM's use of precision-ground slideways and hand-scraped critical surfaces is a quality indicator that supports sustained accuracy in production environments. Most shops report the SV Series holds its initial accuracy well through normal service intervals.
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