Hankray builds machining centres, CNC lathes, boring mills, grinders and drilling machines. Castings are aged in our own yard, and every machine is measured to ISO 230-2 and cuts a test piece before it is crated.
20+
Years building machine tools
5
Build stages, every one inspected
ISO 230-2
Machine acceptance standard
12mo
Warranty on main components
Product Range
Five families of metal-cutting machines, built and inspected on our own site. Travels, spindle and control are configured to the part you need to make.
Send us the part you need to make and we will tell you which machine fits, including the cases where a smaller or manual machine does the job.
Discuss Your PartOur Plant
The casting, the machines that cut it, the hall it is assembled in, and what gets measured before it leaves. All four are on one site.
Guideway Choice
We build both. The choice comes down to how much metal you are removing and how fast you need to move between cuts.
A wide machined face sliding directly on the bed, hand-scraped so the two surfaces carry an oil film across their whole contact area.
A block running on recirculating rollers down both sides of a hardened rail, so the moving mass rolls instead of slides.
Where each one belongs
Most work sits in the overlap. Send us the part and we will tell you which way we would build it.
Engineer’s blue transferred to the high spots. Each mark gets cut down by hand, then the surface is checked again.
Box Way Finishing
Metal comes off the way face a few microns at a time with a hand scraper. Between passes the face is checked against a reference straightedge coated in engineer’s blue. The blue transfers to the high spots, those get cut down, and the cycle repeats until the contact points sit evenly across the whole face.
A ground surface is flat, but two ground surfaces meeting each other touch along a narrow band. Scraping leaves a controlled pattern of microscopic hollows that hold oil, so the joint is both tightly mated and continuously lubricated. That is what stops a slide sticking at low feed.
End To End
Ten steps between a part drawing and a machine cutting metal in your plant. The three highlighted are the ones you cannot run from another continent.
Your drawing, material, tolerance and cycle-time target.
Model and travels, with the reasoning behind the recommendation.
Your machine enters the build schedule with a start date and a finish date in writing.
Control, spindle, guideways, ballscrews, tool magazine and coolant, confirmed line by line in writing.
Photographs and measurements at every milestone, sent to you as your machine moves through the shop.
Geometric accuracy to ISO 230-2, a cut test piece, and a report carrying the machine serial number.
Rust protection, crating, container bracing and the full document set.
On site or guided remotely: levelling, power-up and first cut.
At your plant, or at our Suzhou plant before the machine ships.
Spare parts, remote diagnostics and geometry re-checks through the service life.
Steps 04, 05 and 06 are documented and sent to you as they happen.
The Veto
Every machine is measured against ISO 230-2, the international standard for positioning accuracy of numerically controlled axes. These are the checks it goes through before release.
| Check | Reference | How it is measured |
|---|---|---|
| Positioning accuracy, per axis | ISO 230-2 | Laser interferometer, bidirectional, repeated runs along the full travel |
| Repeatability | ISO 230-2 | Derived from the same trace |
| Circular interpolation | ISO 230-4 | Ballbar, both directions |
| Geometric alignment | ISO 10791 | Squareness, parallelism and spindle runout |
| Cutting test | NAS 979 | Cone frustum test piece, measured, photographed and retained |
| Run-in | — | Continuous no-load running, after which the geometry is re-checked |
If a machine misses on any line, it goes back into the shop until it passes. The report that ships with it carries the machine serial number and the measured values, not a pass mark.
No Substitutions
Six assemblies, each named by brand and model on your quotation before anything is ordered.
Brand, model and software options named in the contract, including the option pack. A control can be the right brand and still lack the functions a given part needs.
Taper, power, torque curve, maximum speed and bearing arrangement. Belt-driven, direct-drive or built-in is stated, not implied.
Linear roller or hardened box ways, brand and size, plus whether the mating faces are hand-scraped.
Brand, diameter, pitch, accuracy class and whether they are pretensioned and directly coupled.
Type, capacity, maximum tool weight and diameter, and measured tool-change time.
Through-spindle coolant pressure, tank capacity and chip conveyor type, specified in the contract alongside everything else.
Whatever is written on your quotation is what arrives. Before crating, we photograph the nameplate of every major component and those photographs travel with the machine documents. You can check the serial numbers against your order on the day the crate opens.
Applications
The five sectors we supply most often, and what each one demands from the machine.
Leaving The Plant
Weeks at sea in a salt-laden container, then a crane at the other end. The machine has to arrive holding the accuracy it left with.
Guideways, ballscrews and the spindle taper are coated and wrapped in VCI film. Weeks of sea air is the test, not the warehouse.
Plywood export crates that meet ISPM 15, so the shipment does not sit at your port waiting on timber clearance.
Centre of gravity and sling points are marked on the crate, with the machine weight printed where the rigger will look for it.
Packing list, the serial-numbered inspection report, electrical drawings, operation manual and the spare parts list, in the crate and by email.
After Delivery
What we cover once the machine reaches your plant, and for how long.
An engineer on site, or a guided remote session covering foundation, levelling, power-up, axis checks and the first cut.
Delivered at your plant, or at our Suzhou plant while the machine is still in build.
Wear parts identified by part number at handover, so nothing has to be reverse-engineered from a photograph two years later.
Alarm codes and control data reviewed with our engineers before anyone books a flight.
Twelve months on main components, handled directly by the engineers who built the machine.
Accuracy re-measured against the original acceptance report, so drift is a number rather than an argument.
On Record
Utility model patents held by Hankray.
In Service
Straight Answers
The six questions that come up in almost every first enquiry.
Some are excellent and some are not, and the spread is wider than it is in Japan or Germany. A well-built Chinese machining centre with properly aged castings, hand-scraped ways and a name-brand control will hold tolerance for years. The risk is not the country. It is that a good machine and a poor one look identical in a photograph. The reliable way to tell them apart is the plant: how the castings are aged, whether the guideways are scraped, and what is measured before shipment.
For absolute precision and long-term consistency, Japan, Germany and Switzerland still lead, and we will say so. China competes on value. For general machining, larger work envelopes and production work where the budget will not stretch to a Japanese machine, a well-built Chinese machine with a verifiable acceptance report is usually the rational choice.
The largest domestic names include Haitian Precision, DMTG in Dalian, Shenyang Machine Tool and Jier. For an export purchase, though, the size of the brand matters less than whether that particular plant builds your class of machine well, and whether it can show you measured data for the machine you are buying.
There is no single answer, because the best machine is the one matched to your part. Send us the drawing, the material and the tolerance you need to hold, and we will tell you which class of machine fits, including the cases where a smaller machine will do the job.
Four things drive it: travels and table size, the control package, the spindle, and how much tooling is included. A compact vertical machining centre and a large horizontal with a pallet changer sit an order of magnitude apart. We quote a configuration rather than a headline number, because a headline number is how substitutions get hidden.
In outline: agree the specification, confirm the configuration in writing, place a deposit, monitor the build, run acceptance testing, then release the balance and ship. The step most buyers skip is acceptance testing. Insist on a numbered report and a cut test piece before the machine leaves the country.
Next Step
Anyone buying a machining centre already has a part they need to make. Send us the drawing, the material and the tolerance you need to hold, and we will tell you which machine fits.
