| Description | GVN08C | GVN12C | GVN20C | GVN25C | GVN40C |
|---|---|---|---|---|---|
| Drilling Diameter Range (mm) | Ø2 – Ø8 | Ø3 – Ø12 | Ø5 – Ø20 | Ø8 – Ø25 | Ø8 – Ø40 |
| Spindles (Nos.) | 1 / 2 / 4 | 1 / 2 | |||
| Max. Drilling Depth (mm) | 400 / 600 / 1000 | ||||
| Part OD Range (mm) | 10 – 50 | 12 – 75 | 15 – 100 | ||
| Part Clamping System | Hydraulic Cone Clamping / Chuck Clamping | ||||
| Max. Component Weight (kg) | 30 | 50 | 70 | ||
| Counter Rotation Speed (rpm) | 300 | 140 | |||
| Drill Feed Range (mm/min) | 0 – 1000 | ||||
| Rapid Traverse (mm/min) | 10000 | 8000 | 4000 | ||
| Power per Spindle (kW) | 1.5 | 2.2 | 5.5 | 7.5 | 15 |
| Spindle Speed (rpm) | 2000 – 12000 | 1200 – 10000 | 600 – 6400 | 600 – 3300 | 350 – 3300 |
| Coolant Tank Capacity (liters) | 850 / 900 / 1100 | 1050 / 1100 / 1250 | 2000 | ||
| Max. Coolant Pressure (bar) | 120 | 100 | 80 | 60 | |
Condition used
Control Fanuc Oi-TF
Drilling diameter range 0.315 — 1”
Number of spindles 1
Spindle speeds 600-3,300 rpm.
Power per spindle 10 hp.
Maximum drilling length 40”
Part od range 0.75—3”
Part clamping system Hydraulic cone clamping/
Maximum component weight 88 lbs.
Rapid traverse rate315” per minute
Drill feed range0—8” per minute
Coolant tank capacity277 gallons
Maximum coolant pressure870 psi.
Weight12,500 lbs.
Dimensions16’ 4” W x 8’ L x 7’ H
Chip hopper3’ W x 3’ L x 2’ H
Box of tooling24” W x 12” L x 40” H
Machine featuresPart counter rotation for superior hole straightness
Chuck clamping
(chip conveyor can be removed saving 1’ in width)
Precihole gun drilling machines offer the best combination of output parameters
like hole straightness, surface finish and bore tolerance.
Quick clamping arrangement for ease of loading and unloading parts
Use of ball screw and servo drives for linear motion
Multiple tool steadies to provide solid tube support
Rotating cone or self-centering chuck arrangement for part clamping
High pressure coolant and fine filtration system
Oil chilling and automatic lubrication
