YAMA SEIKI VMB-850 is a high-precision vertical machining center designed for versatile milling operations in job shop and production environments. It features a rigid cast iron structure and box-type column design that provide excellent vibration damping and thermal stability during heavy cutting operations. The VMB-850 is suitable for machining a wide range of materials, including aluminum, steel, cast iron, and engineering plastics, and is commonly used in automotive, aerospace, tooling, mold making, and general manufacturing applications.
The VMB-850 is typically equipped with a high-speed spindle that supports efficient material removal while maintaining excellent surface finish quality. Advanced CNC control systems offer high-speed data processing, smooth contouring, and user-friendly programming capabilities, enabling complex 3D machining and multi-axis interpolation with high repeatability. A large-capacity tool magazine and automatic tool changer allow multi-operation machining in a single setup, reducing cycle times and improving productivity. Precision linear guideways and high-performance servo drive systems further enhance positioning accuracy and machining consistency over long production runs.
Yama Seiki engineered the VMB-850 for durability and long-term industrial use, with robust mechanical components, efficient chip management, and automation-ready features for integration into modern manufacturing cells. Its combination of rigidity, speed, and flexibility makes it a dependable solution for manufacturers seeking a compact and versatile vertical machining platform.
Operator Interface: Jog & override handwheels, diagnostics
COOLANT & CHIP HANDLING
Coolant: Standard flood coolant
Chip Handling: Chip auger or conveyor optional
Coolant Thru-Spindle: Optional on some units
POWER & AIR REQUIREMENTS
Power Supply: 3-phase industrial
Approx. Power Draw: ~25 kVA (typical for this class)
Air Pressure: Required for tool changer and pneumatics
YAMA SEIKI VMB-850 — GENERAL INFORMATION
Model: YAMA SEIKI VMB-850
Machine Type: CNC Vertical Machining Center (VMC)
Manufacturer: Yama Seiki
Designed for general milling, drilling, and tapping of medium parts
Robust box-way construction for rigidity and long service life
Typically fitted with FANUC CNC (Fanuc Oi-MC on many units)
3-axis (X/Y/Z) milling center with automatic tool changer
Popular in general engineering, tooling, aerospace, and automotive environments
YAMA SEIKI VMB-850 — KEY CAPABILITIES
Large work envelope for versatile part size handling
Box-way construction for stiffness and accuracy
FANUC CNC control for reliable and familiar operation
Side ATC with around 24 tools
Geared head or belt spindle options on some units
Good balance of power, travels, and ease of maintenance
INDUSTRIES THAT USE YAMA SEIKI VMB-850
Automotive part machining
General engineering fabrication
Aerospace component milling
Precision tooling & die work
Prototype & batch production machining
TYPICAL PARTS YAMA SEIKI VMB-850 CAN PRODUCE
Medium-size milled housings & covers
Precision brackets & fixtures
Drilled/tapped plates
Structural milled parts
Milling of slots, pockets, and contours
WHY CHOOSE THE YAMA SEIKI VMB-850
Reliable and proven Yama Seiki build quality
FANUC CNC control widely supported
Large travels for versatile machining applications
24-position ATC supports multi-tool jobs
Robust box-way for heavy machining
Good used machine value and availability
Summary Table
PARAMETER
VALUE
X-Axis Travel
~30–33.5″ (~762–850 mm)
Y-Axis Travel
~20–23.6″ (~508–600 mm)
Z-Axis Travel
~23–23.6″ (~584–600 mm)
Table Size
~41.3″ × 23.6″ (~1050 × 600 mm)
Max Table Load
~1,870 lb (~850 kg)
Spindle Speed
~6,000–8,000 rpm
Spindle Power
~15–20 HP
Tool Capacity
~24 tools
Control
FANUC Oi-MC
Rapid Traverse
~788–945 ipm
How much does used YAMA SEIKI VMB-850 cost? Used Machine Price Range (Approximate)
CONFIGURATION
ESTIMATED PRICE (USD)
Used Base Model
$18,000 – $28,000
Mid Spec (coolant thru-spindle, conveyor)
$28,000 – $38,000
High Spec (options / newer control)
$38,000 +
Prices vary depending on build year, spindle hours, tool count, and installed options.
WHY BUY USED YAMA SEIKI VMB-850
Buying a used Yama Seiki VMB-850 can provide significant cost savings while still delivering advanced vertical machining capabilities. Pre-owned machines are ideal for job shops and production facilities looking to expand milling capacity or replace aging equipment without the high capital investment of new machinery. With proper inspection, refurbishment, and maintenance, a used VMB-850 can offer reliable long-term performance, making it a practical and cost-effective investment for manufacturers focused on maximizing productivity and return on capital.
