5-Axis Machining in Vietnam: Shop Classes and Capacity Map

5-axis machining in Vietnam is not one market. It is five classes of shop that look alike on a website and behave differently on a drawing: indexed 3+2 job shops, simultaneous 5-axis job shops, mill-turn shops, mould and die shops and the machining departments of foreign-invested manufacturers. Pick the class from the part first, then the region and the shop. As of October 2026.

5AxisVN is a matching service. We own no machines, we name no shop and we publish no count of shops, because no official count exists that we could open.

Class	How the machine is used	Typical parts	What proves the class	Main risk for a buyer
Indexed 3+2 job shop	Part tilted to a fixed angle, locked, cut with three axes	Housings, manifolds, brackets with angled holes, fixture plates	Machine model with a tilting rotary table, report from a multi-face part	Quotes “5-axis” for work it will index (fine) or for freeform work it cannot do (not fine)
Simultaneous 5-axis job shop	All five axes move during the cut	Impellers, blades, blended fillets, ports, freeform moulds	CAM seat with machine kinematics, a programmer, a report or scan from a freeform part	Few seats and few programmers, so queues and key-person risk
Mill-turn shop	Turning centre with a B-axis milling head, part finished in one chucking	Shafts, valve bodies, fittings with off-axis holes	Machine model with B-axis and sub-spindle, a turned part with milled features	Bar size and length limits, cycle time on large parts
Mould and die shop	5-axis hard milling plus EDM and grinding	Mould inserts, cores, cavities, electrodes	Hardened part report, EDM machines on the list, steel certificates	Tool-room habits: one-off quality, slow on repeat batches
In-house department of a foreign-invested maker	Machines serve the group’s own products first	Parts for the group’s own products; outside work when capacity is free	Whether it is allowed to quote outside work at all	Your lot waits behind the parent’s orders

Why the class matters more than “5-axis”

“5-axis” on a shop’s website covers everything from a 3-axis machine with a rotary table bolted on to a trunnion machine running blade toolpaths all day. The two ends of that range quote differently, schedule differently and fail differently.

Simultaneous 5-axis means all axes move while the tool cuts, so the tool stays at the right angle to a surface that changes shape. It is needed for impellers, turbine-type blades, blended fillets and freeform mould surfaces. It needs CAM software that models the whole machine, a post-processor tuned to that machine and a programmer who uses it every week.

3+2 indexed means the part is rotated to an angle, clamped there and cut with three axes, then moved to the next angle. It gives most of the benefit of five axes on prismatic parts: one setup instead of four, so faces relate through the machine and not through re-clamping. For a housing with ports on three angled faces it is usually the right process and the cheaper one.

Most shops that own a 5-axis machine run most of their work as 3+2. That is not a fault. The fault is a quote that does not say which one was assumed. Our 3+2 versus simultaneous guide goes through the difference feature by feature.

Class by class

Indexed 3+2 job shops

The widest class. A typical floor has several 3-axis vertical machining centres, one or two with a tilting rotary table, and sometimes a compact trunnion 5-axis machine. Work is aluminium and stainless housings, brackets and fixtures in batches from a handful to a few hundred.

Good fit: prismatic parts, tolerances in the standard and precision bands of our tolerance reference, batch work. Weak fit: freeform surfaces, thin blades, deep undercuts.

Simultaneous 5-axis job shops

A smaller class. The difference is not only the machine but the CAM seat and the person behind it. These shops often show a sample impeller or blade and can export a CAM simulation screenshot. Ask for a report or a scan deviation map from a freeform part, not a photo.

Good fit: impellers, ports, blended surfaces, aerospace-type thin-wall parts. Weak fit: simple prismatic parts, where you pay simultaneous rates for indexed work.

Mill-turn shops

Turning centres with a milling spindle on a B axis and often a second spindle. A part with a turned body and milled flats, cross holes or angled ports comes off finished in one chucking. These shops often run steel, stainless and brass bar. The part envelope is set by bar capacity and swing, not table size.

Mould and die shops

Tool rooms that run 5-axis hard milling next to wire and sinker EDM and surface grinding. Many serve the plastic injection and die-casting plants of the electronics and automotive supply chains. Good for hardened inserts, cores and graphite or copper electrodes. Repeat production batches are not their habit, so plan inspection for lot two as carefully as for lot one.

In-house departments of foreign-invested makers

Large manufacturers often run their own machining departments. Some quote outside work when capacity is free; many are not allowed to. If one does quote, ask in writing who decides priority when the parent’s orders rise. The FDI versus local comparison covers ownership in more detail.

Ownership cuts across every class

Each class above exists in foreign-invested and in Vietnamese-owned form. Ownership changes the counterpart, the customer mix and often the report format the shop is used to. It does not change whether a machine runs simultaneous work. Check ownership on the National Business Registration Portal with the shop’s legal name and tax code, and judge capability on evidence.

Region: where the classes sit

Vietnam merged its provinces in mid-2025, from 63 provincial-level units to 34. Industrial areas that buyers still know by their old names now sit inside larger units. We use the new names below.

Region	Provinces and cities (2025 names)	Former names you may still see	Industry mix that drives demand for 5-axis work	Main exit
North	Hanoi, Bac Ninh, Hai Phong, Hung Yen, Phu Tho	Bac Giang (now Bac Ninh), Hai Duong (now Hai Phong), Thai Binh (now Hung Yen), Vinh Phuc (now Phu Tho)	Electronics assembly, motorbike and automotive supply, Japanese and Korean supplier parks	Hai Phong port, Noi Bai airport
South	Ho Chi Minh City, Dong Nai, Tay Ninh	Binh Duong and Ba Ria-Vung Tau (now Ho Chi Minh City), Long An (now Tay Ninh), Binh Phuoc (now Dong Nai)	Mixed industry, machinery, furniture and consumer goods, a large Japanese and Taiwanese supplier base	Cai Mep and Cat Lai ports, Tan Son Nhat airport
Central	Da Nang and neighbours	Quang Nam (now Da Nang)	Smaller base, some automotive and aerospace supply	Da Nang port and airport

Region tells you the lane and the neighbouring industries. It does not tell you the class. The Hanoi and Ho Chi Minh City guide covers ports, distances and transit.

How to verify the class of one shop

1. Machine list with make, model and year. Then look the model up. A trunnion or swivel-head model is a 5-axis machine; a 3-axis model with a rotary table is a 3+2 setup. Our machine brands guide lists the common families.
2. CAM system and programmer. Which software, which version, who writes the toolpaths and whether the post-processor was made for the exact machine. See CAM programming in Vietnam shops.
3. A report from a comparable part, with the customer removed. For a freeform part, a scan deviation map or a CMM profile report.
4. Measurement in-house or outside. A shop that sends every part out cannot correct itself between parts. See inspection labs.
5. The trial. One small lot with a first article report before the volume. Our capability check has the 12 questions in order.

What the classes mean for price and lead time

Class	Cost driver to watch	Lead time driver
Indexed 3+2	Number of tilts and setups, fixture design	Machine queue, material from stock
Simultaneous 5-axis	Programming hours, cycle time on the surface, tool wear	Programmer availability, prove-out
Mill-turn	Bar size, cycle time	Bar delivery, setup slot
Mould and die	Hard milling and EDM hours, steel and heat treatment	Heat treatment subcontract
In-house department	Spare-capacity pricing that can change	Parent’s schedule

We publish no rates. For a country comparison, see Vietnam versus China, Thailand and Mexico.

Using this map in an RFQ

Write the class you expect, or say you do not know and want advice. Mark which features need simultaneous motion and which can be indexed. Give material, certificate type, quantity breaks and the Incoterm. Send the drawing and we match it to up to three shops in the right class, with a reply within 24 business hours.