Last verified against the primary source on Sep 12, 2026.
~$37,800 to ~$99,500 used. Spindle economics match the VF-series ($4,800–$7,200 rebuild vs $16,000–$24,000 replace); the 1,000 PSI through-spindle coolant makes the rotary-union seal a scheduled wear item and a real bearing-killer. Also inspect the pallet changer and 4th-axis for backlash.
Confidence 55%4 observed comparables
As of Sep 11, 2026What can make the cheap machine expensive?
| Component | Severity | Documented repair cost |
|---|---|---|
| Spindle bearing | high | $4,800–$24,000 |
| Coolant intrusion into spindle | high | not yet verified |
| Pallet Pool fault cluster | medium | not yet verified |
Haas VF/EC-series spindle economics: rebuild $4,800–$7,200, replacement spindle $16,000–$24,000 before install. Runout under 0.0002" pre-failure is a rebuild candidate; above 0.0005" the shaft may be compromised. Check spindle runout and listen for grinding/whining at high RPM before buying.
$4,800–$24,000EC-400PP units run 1,000 PSI through-spindle coolant; high-pressure rotary-union seals are a scheduled wear item and a documented coolant-intrusion path that ruins bearings. Verify seal condition and TSC pressure.
Cost not yet verifiedOne owner of a new EC-400 PP reported a cluster of faults: "Pallet changer door problems, tool changer door brackets fell off allowing arm to smash into the lower door, tools stick in the spindle if run for more than 30 minutes... high pressure pump periodically does not work (welded tools, no coolant)... chip augers had to be replaced." Presented as one extreme case, not typical (another poster: "This never ever happens with Haas, ever, as a rule"), but a checklist of what to inspect on a used pallet-pool machine.
Cost not yet verifiedA Haas VF-series rebuild has come in between $4,800 and $7,200 … a replacement spindle for the same machine … runs $16,000 to $24,000 before install.
Common questions
How much does a used Haas EC-400 cost?
Observed listings range roughly $37,800 to $99,500 depending on age, condition, and configuration (as of 2026-09-11).
What fails on the Haas EC-400?
The most cited concerns in our evidence record: Spindle bearing, Coolant intrusion into spindle, Pallet Pool fault cluster. See the risk breakdown above for details and sources.
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From the research record
- PRICE (SECONDARY, Machinio aggregate + live listing, as-of 2026-09-11): 2004–2005 $37,800–$50,500; 2006 $39,750; 2008 $49,900; 2013 $99,500; EC-400PP 2012 (probing, 1000 PSI TSC, 70A) contact-for-price (https://www.machinio.com/models/haas/ec-400). Machinio bands are multi-listing aggregates; observations is a floor.
- POWER: HMC with pallet changer — high amperage (listings show 70 A), 3-phase, heavy; professional rigging and leveling required.
- CONTROL: proprietary Haas control; Fanuc lifetime-support contrast applies.
Sources
- Haas EC-400 used prices (model page)web · research-cited · accessed 2026-09-11
- Spindle Rebuild vs Replace Economicsweb · research-cited · accessed 2026-09-11
- Coolant Intrusion Damageweb · research-cited · accessed 2026-09-11
- FANUC CNC Systems (lifetime-support statement)official · verified-official · accessed 2026-09-11
- EC400 PP owner report (Practical Machinist)forum · verified-primary · accessed 2026-09-12
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