Amada Coma 567
Turret Sleeving

Amada Coma 567 at a glance

Era

1984-94

Tonnage

50-55 ton

Stations

44-72

Turret

Thick turret

Auto-Index

2 A/I

Hit Rate

300 spm

Control

Fanuc 6M / 04PC

The Coma line ran from the 1970s to 1994 and is long out of production. These are heavily built machines and a great many are still in daily service, which is precisely why turret restoration matters on them — there is no factory-fresh replacement to buy.

Where this machine is in its life

A Coma 567 built in 1984-94 has been earning for three decades or more. Machines of this generation are usually fully depreciated, well understood by the people running them, and producing perfectly acceptable work — right up until turret wear starts showing in the parts.

That is the decision point most Coma owners reach. The mechanical structure of these machines is heavily built and typically still sound; what has aged is the turret bores, and often the control. Neither requires replacing the machine.

How a Coma 567 turret wears

At 50 tons, the Coma 567 is in the heavy class, and that changes how the turret wears. Every stroke puts substantial force through the station bore. Wear here is driven by load rather than cycle count, and it tends to show first in the stations carrying the largest tools on the thickest material.

With 44-72 stations, work is spread across a wide turret, which is why wear on these machines is so rarely uniform. In practice a handful of stations carry the common tools and wear out well ahead of the rest. Most Coma 567 jobs are partial as a result — the worn stations are sleeved and the sound ones are left alone, which keeps both cost and downtime down.

The tell is always the same: the fault stays with the station rather than following the tool. Move a tool that is producing bad parts to another station — if it runs clean there, the bore is worn, and new tooling will not change that. See holes out of round or burring on punched parts for the full diagnosis.

What sleeving a Coma 567 involves

Each worn bore is machined to a precise oversize and a hardened USA-made steel sleeve is pressed in with an interference fit, restoring the station to Amada factory tolerance — typically within 0.0002″. Engineers travel to you; the Coma 567 never ships. 2–3 days of downtime, typically $8,000–$25,000 depending on scope. After the first install your own maintenance staff can replace sleeves in future.

Set against $100,000–$500,000+ for a replacement machine — see sleeve or replace, including where replacing genuinely wins.

2 A/I on this machine

The Coma 567 carries 2 A/I. Auto-index stations rotate tooling in 0.01° increments through gears, bearings and a rotary encoder mechanism — all in constant motion, all wearing. Symptoms are angular drift, indexing errors, alarm codes and parts punched off-angle.

TSI rebuilds them completely and calibrates before sign-off, routinely in the same visit as sleeving. Auto-index refurbishment · diagnosing angle errors.

Is the Coma 567 a thick or thin turret machine?

The Coma 567 is a thick turret machine. Thick and thin describe the turret, not automatically the tooling — the two are quoted separately, and a machine has to be identified on both counts before sleeves or tooling are ordered.

Tonnage will not tell you either: several 22-ton Amada machines run thick turrets. If you are not certain what your press carries, send us the model and serial number and we will confirm it. See also thick vs thin turret and how Amada model numbers work.

Turret configurations for the Coma 567

The Coma 567 was not built with one turret. Amada offered more than one layout, so the station count does not follow from the model name — it has to be read off the machine. These are the configurations documented for this model:

A–E are Amada tool-station sizes: A ½″, B 1¼″, C 2″, D 3½″, E 4½″. A blank size column means the station and auto-index totals are confirmed but the factory A–E mix is not — we would rather leave it open than guess it.

Confirm before you quote. Because the Coma 567 exists in more than one layout, we verify the turret from the serial number or a photograph before pricing any sleeving. If you send us the serial number we will tell you which of the above you have, and how many stations that means. Send us the serial number.

What the number tells you

Amada model numbers describe the machine. The Coma 567 decodes as a 50-ton class press with a 60 × 70 table — the first digit is tonnage, the other two are table width and length. Its full designation is COMA-506070.

How to read an Amada model number — useful when your paperwork and your badge disagree.

How the Coma 567 compares

Often paired with plasma head — that is what sets this machine apart on the spec sheet.

These machines are easy to mix up, and the difference matters when you are quoting a turret job. Against the other Coma models we cover:

• Amada Coma 557 — stations 58, auto-index Yes, control Fanuc 04PC.
• Amada Coma 555 — tonnage 50 ton, stations 46, control Fanuc 6M.
• Amada Coma 588 — tonnage 50 ton, auto-index 4 A/I.

Sleeving is the same process across all of them. What changes is scope, and scope follows station count and how hard the machine has been run.

The Fanuc 6M / 04PC control

A Coma 567 of this vintage shipped with the Fanuc 6M / 04PC. If yours is still original, it is very likely the oldest thing on the machine — and the part most likely to strand it, because a control fault on an obsolete system is harder to solve than any mechanical wear.

TSI performs FANUC-based retrofits that keep full programming compatibility, so existing programs continue to run unmodified. Done in the same visit as turret work, it is one shutdown rather than two. See control upgrades.

Amada Coma 567 documentation

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Full libraries: manuals and parts lists.