G300
OD Grinder
G300 OD Grinder
High precision CNC Cylindrical grinding
The Weldon G300 is a mid-sized, high-precision CNC cylindrical grinder designed to produce parts either between centers or in a chucking mode.
Although capable of running in a high production environment, the G300 also provides the flexibility to grind a wide variety of part configurations with minimal set-up.
Available with either a straight or angular wheelhead (factory set) the G300 can grind outside diameters, shoulders and faces in a single set-up. The CNC control can address complex form grinding (tapers, radii, etc.) via form dressed wheels or profiling.
FEATURES
FANUC Series 0i-TD CNC control with an 8.4″ color LCD and servo drives featuring FANUC AC digital technology. Includes a battery backup absolute feedback system eliminating the need to reference at each start-up.
Cast iron machine base providing stiffness, vibration control and thermal stability.
Pressurized Vee & Flat way system for smooth controlled linear motion.
Straight (S) or angular (A) wheelhead with hydrodynamic spindle bearings for superior surface finishes and roundness capability
16” x 3” (S) or 20” x 4” (A) wheel guard with adjustable hood and coolant nozzle plumbing.
10 hp AC wheel drive with variable speed drive to maintain constant sfpm.
Combination live and dead spindle workhead with straight recess spindle nose and #5 MT center.
Fixed position diamond holder behind the workhead for CNC dress routines.
Hydraulically actuated tailstock, 1.6” quill movement, with #4 MT center and 7.75” manual quill adjustment.
Full enclosure with manual sliding door assembly and multiple maintenance access window panels. Includes safety interlock.
OPTIONS
In-process gage for automatic size control.
Automatic lateral locator, wheelhead mounted, featuring a Renishaw probe.
Automatic wheel balancer, pulley side mounting.
Electric rotary dressing systems for extended diamond life when processing with standard abrasives.
Work holding solutions can be addressed with a variety of systems such as manual and powered jaw chucks, collet chucks, magnetic faceplates, vacuum chucks, expanding arbors, pitch-line chucks and custom fixtures.
Coolant supply and filtration systems are available to suit any application; magnetic, fabric, cyclonic, pressure, and combination filtration units can be provided.
Acoustic emissions sensor for gap elimination, crash detection and touch dressing.
Automation via FANUC 6 Axis robots can be factory integrated on a turnkey basis.
Capacity
- Maximum work swing: 11.8″ (300mm)
- Maximum distance between centers: 20″ (500mm) or 40″ (1000mm)
- Work piece weight: 330 lbs.
Workhead (Live and Dead Spindle)
- Motor: 2 hp
- Work speeds (variable): 0 – 1000 rpm
- Center taper: #5 Morse
- Through hole: 1.75″
Wheelhead
- Motor: 10 hp, T.E.F.C.
- Speed (variable): 8,500 sfpm (nominal)
- Travel distance: 13.75″
- Rapid travel rate: 630″ / minute
- Programmable feed rate: .000010″ – 200″ / minute
- Straight or angle: 0˚ or 30˚ fixed
- Wheel spindle bearing: Hydrodynamic
Grinding Wheel
- Maximum OD wheel diameter: 16″(S) or 20″(A)
- Maximum wheel width: 3″(S) or 4″(A)
- Wheel size throw away: 12″(S) or 16″(A)
Tailstock
- Center taper: #4 Morse
- Quill travel distance: 1.6″
- Quill advance / retraction: Hydraulic
- Quill manual adjustment: 7.75″
Table Drives
- FANUC AC digital servo drives: 2.1 hp
- Travel distance: 27.5″ (700mm) or 47.2″ (1200mm)
- Rapid-traverse rate: 785″ / minute
- Programmable feedrate: 0.000010″- 200″ / minute
- Swivel taper adjust: +/- 5˚
- Way construction: Ground Vee & Flat, pressurized
- Position feedback resolution: 0.00001″
Lubrication
- Wheel spindle: Recirculating hydraulic oil
- Ways: Automatic lube oil
- Ballscrews: Automatic lube oil
- Workhead spindle: Permanent grease packed
- Note: Safety detect interlock to prevent cycling if low air pressure or low oil is sensed
Electrical Specs
- Standard voltage: 208 VAC, 3-phase, 60 Hertz
- Note: Any other voltage must be referred to factory for price and delivery.
Pneumatics
- Air moisture: 70° F. dew point maximum
- Air pressure: 80 psi
- Air volume: 5 scfm
- Note: System requires a filtered and dry air source
Tank Capacities
- Slide lubrication oil tank: 0.8 gallon
- Wheel spindle lubrication tank: 4 gallon
Machine Dimensions and Construction
- Width: 111″ or 131″
- Depth: 147″
- Height: 76″
- Centerline workpiece, height from floor: 45″
- Weight: 11,000 or 14,000 lbs.
- Construction: Cast Iron
- Foundation: 6″ concrete floor is recommended
CNC Control Specifications - FANUC 0i-TD
- Manual pulse generator
- Full linear and circular contouring and positioning capabilities
- FANUC AC digital servo systems
- Direct RPM programming or constant surface speed
- Built-in diagnostics
- 8.4″ LCD color display
- Automatic recognition of EIA or ISO coding
- Decimal point programming
- RS 232 / Ethernet / Memory Card / USN interface
- 0.000010” command resolution
- Automatic update of offset
- Program storage, 1280 meters