Appearance
Deep hole drilling machines last 20–30 years, but controls and components become obsolete in 5–10. Upgrade kits extend capability at 20–40% of new machine cost. The right upgrades can add 10–15 years of productive life.
Common Upgrade Kits
| Upgrade Type | Typical Cost | Benefit | Payback Period |
|---|---|---|---|
| VFD coolant pump conversion | $5,000–15,000 | 20–35% pump energy reduction | 6–18 months |
| CNC control upgrade | $20,000–60,000 | New features, faster processing, connectivity | 12–24 months |
| High-speed spindle | $15,000–40,000 | Higher RPM capability, new material capability | 6–18 months |
| Coolant system upgrade (higher pressure) | $10,000–30,000 | Better chip evacuation, deeper hole capability | 12–24 months |
| Automated tool changer | $25,000–80,000 | Reduced setup time, lights-out operation | 12–30 months |
| Chip conveyor upgrade | $8,000–25,000 | Better chip handling, less downtime | 12–24 months |
| Filtration system upgrade | $10,000–35,000 | Longer coolant life, better surface finish | 18–36 months |
| Industry 4.0 connectivity kit | $3,000–15,000 | Machine monitoring, predictive maintenance | 12–18 months |
Spindle Upgrade
When to Upgrade Instead of Replace
- Current spindle has excessive runout (>0.01 mm)
- Bearing noise or vibration exceeds 2.5 mm/s RMS
- Need higher RPM for new materials (e.g., aluminium, composites)
- Original spindle is obsolete and replacement parts are unavailable
Upgrade Options
| Option | Cost | Outcome |
|---|---|---|
| Bearing replacement (same spec) | $1,500–4,000 | Restores original performance |
| High-speed bearing upgrade | $3,000–8,000 | 20–40% higher RPM capability |
| Complete spindle cartridge replacement | $8,000–25,000 | New spindle, full warranty |
| Motor upgrade (higher power) | $5,000–15,000 | Higher torque, faster cutting |
Coolant System Upgrade
VFD Conversion
Tip: Pump power follows the cube of speed. Reducing pump speed to 80% reduces power consumption to 51%. A VFD conversion pays for itself in energy savings within 6–18 months.
High-Pressure Upgrade
| Current Pressure | Upgrade Target | Cost | New Capability |
|---|---|---|---|
| 30–50 bar | 80–100 bar | $8,000–18,000 | Deeper holes, better chip evacuation |
| 50–80 bar | 120–200 bar | $15,000–35,000 | Small-diameter deep holes, difficult materials |
CNC Control Upgrade
Benefits of Control Modernisation
- Faster program processing (reduces cycle time by 5–15%)
- New CNC features (tool life management, in-process monitoring)
- Connectivity (OPC UA, MTConnect, network integration)
- Easier programming (conversational programming, CAM compatibility)
- Replacement parts availability (old controls become impossible to repair)
Control Upgrade Considerations
| Factor | Evaluation |
|---|---|
| Compatibility | Does the new control support existing servo drives and motors? |
| Rewiring | Partial or complete electrical panel rewiring required |
| PLC program | Entire PLC program must be rewritten |
| Training | Operators and maintenance need training on new control |
| Machine interface | Coolant system, hydraulics, and auxiliary functions must be integrated |
Automation Upgrades
Tool Changer Retrofit
- Magazine-style tool changer: $25,000–50,000
- Turret-style tool changer: $30,000–80,000
- Includes: tool changer mechanism, CNC integration, safety interlock programming
Part Load/Unload Automation
- Gantry loader: $30,000–70,000
- Robot cell: $50,000–150,000
- Bar feeder: $15,000–40,000
Upgrade vs Replace Decision Framework
| Factor | Upgrade if | Replace if |
|---|---|---|
| Machine age | < 15 years | > 20 years |
| Mechanical condition | Ways in good condition, alignment within spec | Worn ways, spindle damage, alignment not maintainable |
| Cost | Upgrade cost < 40% of replacement cost | Upgrade cost > 50% of replacement cost |
| Production requirements | Current capacity adequate | Need higher production volume |
| New capability | One or two capability gaps | Multiple capability gaps |
| Parts availability | Spare parts available | OEM no longer supports |
FAQ
Is it worth upgrading a 20-year-old deep hole drilling machine?
Only if the machine is mechanically sound (ways, spindle, and alignment are within spec) and the upgrade cost is under 40% of a new machine. Otherwise, replacement is more cost-effective.
Can I upgrade the coolant pressure on an older machine?
Usually yes, but verify the rotary union, seals, and piping are rated for the higher pressure. A pressure increase from 50 to 100 bar often requires replacing seals and the rotary union.
How long does a CNC control upgrade take?
2–6 weeks depending on complexity. Includes: electrical panel redesign, wiring, PLC programming, testing, and commissioning. Budget for 1–2 weeks of production loss.
Do upgrades void what remains of the machine warranty?
If the machine is still under warranty, any upgrade must be approved by the manufacturer. Unauthorised modifications void the warranty.
What is the upgrade with the fastest payback?
VFD coolant pump conversion. Typical payback is 6–18 months from energy savings alone, with no impact on production.
Upgrade feasibility depends on machine model, age, and condition. Consult the manufacturer or qualified retrofit specialist for a technical assessment. This article reflects industry practice as of 2026.