Appearance
A well-maintained TBT BTA machine retains 40–60% of value after 5 years. A lesser-known brand with poor documentation retains 15–25%. The difference is not in the iron — it is in brand reputation, parts availability, and the installed base. Service logs alone command a 15–25% premium at resale.
Depreciation Curves by Brand Tier
Deep hole drilling machines follow significantly different depreciation paths based on brand recognition and market position.
| Brand Tier | Examples | Year 1 | Year 3 | Year 5 | Year 10 | Year 15 |
|---|---|---|---|---|---|---|
| Premium European | TBT, UNISIG | 70–80% | 55–65% | 40–60% | 20–35% | 10–20% |
| Mid-range | Mollart, Precihole | 65–75% | 50–60% | 35–50% | 15–25% | 8–15% |
| Regional | Chinese, Korean, Taiwanese | 55–70% | 35–50% | 20–35% | 8–15% | 3–8% |
Why Premium Brands Hold Value
- Installed base: More machines means more demand for spare parts and service expertise
- Parts availability: European manufacturers guarantee parts for 10+ years
- Documentation: Complete manuals, schematics, and software are available
- Service network: Technicians available globally
- Certification: Machines meet CE, UL, or other recognised standards
Factors That Affect Resale Value
Positive Factors (Premium of 5–25% each)
| Factor | Typical Premium |
|---|---|
| Complete service logs | 5–15% |
| Original manuals and drawings | 3–8% |
| Recent spindle rebuild (within 2 years) | 8–15% |
| Spare parts package included | 5–10% |
| Coolant system upgrade | 3–8% |
| CNC control upgrade (recent generation) | 5–15% |
Negative Factors (Discount of 10–40%)
| Factor | Typical Discount |
|---|---|
| Missing documentation | 10–20% |
| Obsolete CNC control (over 15 years old) | 15–30% |
| Coolant system in poor condition | 10–20% |
| Visible way wear or scoring | 15–30% |
| Spindle runout exceeds 0.01 mm | 10–25% |
| Hydraulic leaks | 5–15% |
Depreciation by Machine Type
| Machine Type | Typical Original Price | 5-Year Value | 10-Year Value |
|---|---|---|---|
| Entry gun drilling | $80,000–180,000 | $32,000–90,000 | $16,000–45,000 |
| Production gun drilling | $200,000–400,000 | $80,000–200,000 | $40,000–100,000 |
| BTA drilling machine | $400,000–1,000,000 | $160,000–500,000 | $80,000–250,000 |
| Multi-spindle BTA | $800,000–2,000,000 | $320,000–1,000,000 | $160,000–500,000 |
How to Maximise Resale Value
Record-Keeping
A machine with complete records sells for significantly more than one without:
- Daily production logs
- Coolant concentration and pH test results
- Tooling consumption records
- Spindle vibration test reports
- Coolant pump maintenance history
- CNC backup files and parameter lists
Maintenance That Preserves Value
| Maintenance Item | Frequency | Impact on Resale |
|---|---|---|
| Way cover replacement | Every 5–7 years | High — worn covers signal neglect |
| Coolant system flush | Annual | Medium — prevents pump wear |
| Spindle bearing replacement | Every 8,000–12,000 hours | High — single largest value item |
| Hydraulic oil analysis | Semi-annual | Low — but shows diligence |
| Precision alignment check | Annual | High — proves machine geometry |
Documentation Package for Resale
Prepare this package before listing the machine:
- Original purchase invoice and delivery documents
- Foundation drawing and installation report
- All maintenance logs (digital copies preferred)
- Spindle runout certificate (measured within 90 days of sale)
- Laser alignment report (within 90 days)
- CNC software license keys and backup media
- List of spare parts included
Where to Sell Used Deep Hole Drilling Machines
| Channel | Reach | Commission | Speed |
|---|---|---|---|
| Surplex / industrial auction | Global | 10–20% | 60–90 days |
| CNC resale dealers | Regional | 10–25% | 30–180 days |
| Online marketplace (CNC Machines, Machinio) | Global | 0–5% listing fee | 30–365 days |
| Direct sale to competitor | Local | 0% | 30–60 days |
| Trade-in to manufacturer | Global | — | Bundled with new purchase |
FAQ
Which deep hole drilling machines have the best resale value?
TBT and UNISIG consistently achieve the highest resale values. Their large installed base and parts supply guarantee means buyers pay a premium for these brands even at 10+ years old.
Does reconditioning a machine before sale pay off?
For cosmetic reconditioning (cleaning, repainting), the return is marginal — typically 50–70% of the cost. For functional reconditioning (spindle rebuild, way grinding) the return is higher — 100–150% of the cost, because it expands the buyer pool.
How does CNC control age affect value?
A 10-year-old machine with a Fanuc Series 31i retains 15–25% more value than the same machine with a Fanuc Series 15i. Control generation is one of the strongest predictors of resale value.
Is there a market for very old deep hole drilling machines (20+ years)?
Yes, but limited. Machines 20+ years old sell primarily to developing markets or for specific applications where precision requirements are lower. Value at this age is typically 5–15% of original price.
Can I include the warranty in the sale price?
Manufacturer warranties are generally not transferable. Some extended service agreements may be transferable for a fee. Any remaining warranty coverage should be disclosed to the buyer in writing.
Resale values depend on market conditions, machine condition, and geographic location. The percentages in this article represent typical ranges observed in the global used deep hole drilling machine market as of 2026.