Mazak HTC 400
Manufacturer specifications, what it is built to do, the years we have seen them listed, what tooling fits, and what to check on one. MTE also buys them outright.
What the Mazak HTC 400 is
The Mazak HTC 400 is a CNC horizontal machining center — a machine for production milling with a horizontal spindle and pallet changer, so one pallet runs while the next is being loaded — chips fall clear and the machine runs unattended.
What it is built to do
From the figures the manufacturer publishes, a Mazak HTC 400 suits:
- work up to the published 660 table rating
- No. 40 tooling at up to 10,000 - stepless
Selling a used Mazak HTC 400
Mazak's own pages use three names for this machine. The 1998 horizontal page calls it the HTC-400, the 1998 list of used Mazak machines carries both an HTC 400S and an HTC 400-KY, and the horizontal page from late 2000 names an HTC-400N. None of those pages says what the S, KY or N stands for, so copy the model exactly as the plate prints it. That list dates the 400S to 5/96 and the 400-KY to 6/96, so give the manufacture date from the plate beside the model.
Both HTC entries on that 1998 used-machine list give an M-Plus 12 Control, a 10,000 RPM spindle and 24 tools, and the 1999 copy of the list shows the same two machines. Photograph the start screen so the control model and its software version are on record. If part programs, tool data or a parameter backup are kept on a disk or a PC beside the machine, say so and list what is there.
The 400S on Mazak's list shows what an optioned unit could carry: thru spindle coolant, auto tool length measurement, rigid tapping, a side exit scraper conveyor, 1000M of extra memory and an optical probe. The 400-KY entry names a side exit hinge type conveyor and auto tool length measurement. The 400S line also names EIA/ISO Auto Tool Length Measurement, so check whether your control offers EIA/ISO programs as well as Mazatrol. Then list only the items your machine has.
Mazak gave the HTC-400 a two-pallet changer and an indexing table as standard, and its 1998 page talks about putting a tombstone fixture on that table to reach several sides of one part, or to hold several parts in one setup. Count the pallets, then list every tombstone and fixture that goes with the machine, with the part each one holds. Mazak pitched the machine as an automated alternative to a vertical machining center, so expect a buyer to ask for that pallet and fixture count first.
By late 2000 the horizontal page described the HTC-400N with a standard 1 degree indexing table and a standard two-pallet changer. The 1998 HTC-400 page says the table indexes but gives no step size. Index your table through a few positions, write down the smallest step the control will take, and say whether the plate carries the N. The 2000 page marks the Ultra and FH series, not the HTC-400N, as Palletech expandable.
Mazak's 1998 table gives X, Y and Z strokes of 22, 20 and 20 in, a 15.7 in square table rated for 660 lbs, a 40 taper spindle up to 10,000 rpm on a 15 hp maximum rating, and a 1,180 ipm traverse rate. The same page gives a six second pallet change, 5.5 seconds chip to chip for the 24 tool changer, and a heavy cast-iron meehanite frame. The 1998 page and the 2000 page both say the second pallet takes part loading out of the machining cycle.
Mazak's 1998 page for its Windows CAMWARE software names the M-plus among the controls it writes Mazatrol programs for off line, from DXF or IGS drawing files, and says a finished program goes to the control over an RS232C serial cable or Ethernet. If this HTC was programmed that way, list the software and its version, keep the PC or the files, and say which link the shop used to load programs.
On Mazak's year 2000 page from late 1998, the Mazatrol M-Plus appears in the list of Mitsubishi milling controls the maker tested and found safe from a year 2000 fault, next to the M-32A, M32B, M-1 and M-2. Keep a copy of that page for a buyer who asks about dates on a 1990s control, and still power the machine up and read the date the screen shows.
Sources: Mazak Corporation, archived copy from 1998, read November 1, 2026; Mazak Corporation, archived copy, read September 16, 2026; Mazak Corporation, archived copy from 2000, read November 1, 2026; Mazak Corporation, archived copy from 1998, read November 5, 2026; Mazak Corporation, archived copy from 1998, read November 5, 2026; Mazak Corporation, archived copy from 1998, read November 5, 2026.
Mazak HTC 400 specifications
Source: archived manufacturer page.
3 independent dealer listings were also read alongside the manufacturer document and are recorded in our sourcing record. They are not where these figures come from.
What fits a Mazak HTC 400
Each of these follows from a published specification above, which is named beside it.
40-taper toolholders
This is a 40-taper spindle — the 7:24 steep taper that CAT-40, BT-40 and DIN 69871 (SK-40) holders all share. They share the taper and nothing else that matters: the retention knob and the flange form differ between those standards, so holders do not swap between them without changing pull studs. Knowing which standard a machine was tooled for is worth doing before the holders are packed.
Derived from — Spindle taper: No. 40
What years the Mazak HTC 400 was built
Across the units we have tracked, build years run from 1995 to 1999. Observed across 25 marketplaces, not a manufacturer build record. The manufacturer specifies Mazatrol M Plus, so a unit on an older control is an early one or a retrofit.
Mazak HTC 400 machines on the market now
We track listings across 25 used-machinery marketplaces, and every competitor in this market is one of them, so this is a view none of them can produce for themselves. Right now there are 8 units of this exact designation on the market, drawn from 3 independent sources, spanning model years 1995 to 1999. A seller is competing with those units, which is why condition, tooling and control generation decide the number.
We count only listings whose model is spelled as this machine’s own designation. Near spellings that may be a different variant are excluded rather than counted, so this is a floor on what is out there, not a total.
What affects the value of a used Mazak HTC 400
- Control. The manufacturer specifies Mazatrol M Plus.
- Build year. The units we tracked were built from 1995 to 1999, across 5 model years.
- Against the published figures. The manufacturer gives max spindle speed 10,000 - stepless, spindle motor power 15 max. rating, tool capacity 24 tools - 5.5 sec. chip to chip and X-axis travel 22 in.
What to check on a Mazak HTC 400
The same list whichever side of the deal you are on.
- Six second pallet change. Mazak quotes six seconds for a pallet change. Run several changes back to back, time them, and watch that each pallet seats and clamps on the first try. Load the outside pallet while a program runs on the other one.
- Tombstone weight against 660 lbs. The 15.7 in square table is rated for 660 lbs. Weigh each tombstone that goes with the machine, or read its weight off the drawing, and put the figure in the fixture list so a buyer can add the part weight to it.
- Stepless spindle to 10,000 rpm. Mazak lists a 40 taper spindle, stepless up to 10,000 rpm, on a 15 hp maximum rating. Hold it at top speed for several minutes, feel the housing for heat, and record which 40 taper holder standard the shop used.
- All 24 tool stations. The changer holds 24 tools at 5.5 seconds chip to chip. Step the magazine through all 24 stations with real changes, mark any station that hangs, and count how many holders are loaded.
- Coolant through the spindle and the probe. Thru spindle coolant and an optical probe both appear on the 400S in Mazak's used list. If your unit has them, run coolant out of a drilled holder and take one probe reading, then name both in the option list.
- Rigid tapping and tool length. That list also names rigid tapping and auto tool length measurement. Tap one hole in a scrap block and measure one tool length with the measuring unit, so you can say both of them work.
- Which side exit conveyor. Mazak's list shows two conveyor types on these machines, a side exit scraper type and a side exit hinge type. Look at the conveyor, note which kind yours is, and run it forward and in reverse.
- Serial port and program transfer. Mazak's CAMWARE page says a finished program can be sent to a Mazatrol control over an RS232C serial cable. Find the serial port on the cabinet, say whether a cable stays with the machine, and load one short program through it.
- Parameters saved before shutdown. Mazak's 1998 outline for its Basic Daily course has trainees save programs and parameters to CMT or another device. Make that copy from this control before the power goes off, and keep it with the machine.
Sources: Mazak Corporation, archived copy, read September 16, 2026; Mazak Corporation, archived copy from 1998, read November 1, 2026; Mazak Corporation, archived copy from 1998, read November 5, 2026; Mazak Corporation, archived copy from 1998, read November 5, 2026.
Mazak HTC 400 control and manuals
- Control Mazatrol M Plus
Mazak's UK site says its iCONNECT customer portal holds the manuals and machine specifications for each machine a registered Mazak customer owns.
Source: Mazak, October 24, 2026.
Machines buyers cross-shop with the Mazak HTC 400
Other CNC horizontal machining centers in this directory. We publish no pallet size for this machine, so these are ordered by how often people search for them rather than by size.
Makino A81NX
- Pallet size
- 630 mm x 630 mm
- X-axis travel
- 900 mm
- Y-axis travel
- 900 mm
- Spindle taper
- CAT50 (HSK-A100 opt)
Mazak H-400N
- X-axis travel
- 560 mm
- Y-axis travel
- 510 mm
- Spindle taper
- 40 taper
Dealer-sourced figures, not manufacturer published.
Makino A61NX-5E
- Pallet size
- 400 × 400 mm
- X-axis travel
- 730 mm
- Y-axis travel
- 730 mm
The rest of the CNC horizontal machining centers in this directory: Mazak FH-6800 · Mazak FH480X · Mazak HCN-4000
Browse the whole CNC Horizontal Machining Centers (HMC) catalog, or see everything we buy from Mazak.
Have a Mazak HTC 400 to sell?
We are the buyer, not a broker. No listing, no consignment, no waiting for someone else to find a buyer. Quote in 24 to 48 hours, and we can arrange rigging, freight and the pickup.
