Product Overview

The FMI Vertical Cylindrical Grinding Machine series delivers customized precision versatile grinding, designed for heavy and non-cylindrical workpieces requiring OD, ID, and end-face grinding. The gantry bridge structure combined with a hydrostatic rotary table provides exceptional mechanical rigidity and grinding precision — achieving cylindricity of 1.081um and roundness below 1um. Equipped with  Siemens controllers and a 15" touchscreen conversational interface, operators need only input machining parameters — no manual programming required.

Key Features

• High precision, high stability, optimal operating space — vertical orientation eliminates gravity effects for consistent accuracy
• Suitable for heavy and non-cylindrical workpieces; heavy parts can be crane-loaded onto fixtures
• Gantry bridge structure with excellent mechanical rigidity; rails positioned above bridge to avoid grinding coolant effects
• Fully enclosed guard with oil mist collector — prevents coolant leakage
• Flexible single or dual spindle configuration with optional ATC
• FANUC or Siemens controller with 15" large touchscreen conversational interface
• Conversational programming — intuitive operation without manual G-code programming
• Dual-spindle models support high/low speed wheels or vertical/horizontal combined spindles for high-efficiency machining

Machine Structure

▸ X Axis: Four linear guideways for high-rigidity guidance

▸ Y Axis: Minimal extension design — high rigidity, low vibration, shortest overhang distance

▸ Guideways / Ball Screws: Swiss/German/Japanese brand linear guideways and ball screws (optional linear motor)

▸ Gantry Bridge: Symmetrical gantry structure with minimal thermal deformation (optional mineral casting); rails above bridge avoid coolant effects

▸ Base: One-piece cast base (optional mineral casting)

▸ Spindle: Built-in high-speed spindle HSK100/HDK63; optional dual spindles (vertical + horizontal) or B-axis swivel head; optional ATC

▸ Rotary Table: Hydrostatic precision rotary table, accuracy +-1um (optional built-in DD direct-drive servo motor)

Grinding Applications

Supports multiple grinding modes:

• Cylindrical
• Positive taper
• Upper and end-face
• Inner face
• Negative taper
• Wide taper
• Arc profile
• Custom profile
• Horizontal

Special Machining Capabilities:

• Power dressing
• Taper and flat (mixed-pass) grinding
• Square workpiece inner hole grinding
• Cam profile (non-circular) grinding
• B-axis swivel head grinding
• ATC multi-process automatic tool-change grinding
• Combined vertical + horizontal dual-spindle compound grinding

Machining Precision — Actual Measurement Results

Workpiece: OD Phi180 x L160mm actual grinding inspection report

• Cylindricity: 1.081 um
• Roundness: < 1 um
• Coaxiality Coax ISO: 0.2240 um
• Coaxiality Coax DIN: 0.2240 um

(Verified using TALYROND 565 precision measurement instrument)

Machine Series and Specifications

• Single Spindle with ATC: DN-300 to DN-2000 series
• Single Spindle without ATC: DN-301 to DN-2001 series
• Dual Vertical Spindle without ATC: DN-202 to DN-2002 series
• One Vertical One Horizontal Spindle without ATC: DN-306F to DN-2006F series
• One Vertical One Horizontal Spindle with ATC: DN-308F to DN-2008F series

Key Specification Ranges:

▸ Workable Diameter: Phi200mm to Phi2500mm

▸ Max Workpiece Height: 280mm to 2180mm (model dependent)

▸ Max ATC Opening Height: 450mm to 1000mm (model dependent)

▸ Workable Speed: 20 to 500rpm (model dependent)

▸ Max Load of Table: 100kg to 8,000kg (model dependent)

▸ Machine Weight: 13T to 38T (model dependent)

▸ X/Z Axis Travel: 300mm to 3200mm (model dependent)

Standard Accessories

• Working lamp
• Paper filter
• Magnetic separator
• Wheel adaptors x 3 sets
• Dressing seat
• Oil chiller for spindle
• Oil chiller for rotary table
• Tool cabinet with tools

Optional Accessories (Partial List)

• Mineral cast construction
• Touch probe
• Online measuring system
• Roller dressing attachment
• Diamond dressing roller
• B axis swivel structure
• Anti-collision system
• Spindle monitoring system
• Permanent magnetic chuck
• Hydraulic / Manual 3-jaw chuck
• Customized fixture
• Diamond pen x 1 set
• DD rotary table
• Linear motor
• Oil chiller for coolant tank
• Auto door
• Auto wheel balancing system
• Air conditioner for electrical cabinet
• Transformer
• Voltage stabilizer
• Customized specification upon request