Amada Pega 358
Turret Sleeving

Amada Pega 358 at a glance

Era

1990s

Tonnage

33 ton

Stations

58

Turret

Thick turret

Auto-Index

2 A/I

Control

Fanuc 04PC

The Pega line ran 1984–2001 and remains one of the most widely installed Amada families in the world. Out of production, extremely well proven, and the series TSI has sleeved more of than any other.

Where this machine is in its life

A Pega 358 built in 1990s 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 Pega 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 Pega 358 turret wears

At 33 tons, the Pega 358 sits in the workhorse band — mixed duty, mixed material, and usually the machine a shop reaches for first. That versatility is also why its turret wears: it runs the widest range of work, and the stations holding the most-used tools take a disproportionate share of the hits.

With 58 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 Pega 358 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 Pega 358 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 Pega 358 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 Pega 358 carries 2 auto-index stations of its 58. 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 Pega 358 a thick or thin turret machine?

The Pega 358 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.

What the number tells you

Amada model numbers describe the machine. The Pega 358 decodes as a 30-ton class press with a 50 × 80 table — the first digit is tonnage, the other two are table width and length. Its full designation is PEGA-305080.

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

How the Pega 358 compares

Larger-table Pega — 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 Pega models we cover:

• Amada Pega 357 — tonnage 30-33 ton, era 1988-2001.
• Amada Pega 345 King — control Amada 04PC, era 1990.
• Amada Pega 244 — tonnage 22 ton, stations 24, control Fanuc 6M / 04PC.
• Amada Pega 367 — era 1989-93.
• Amada Pega 345 Queen — era 1988-90.
• Amada Pega 255 — tonnage 20 ton, stations 31, era 1980s-90s.
• Amada Pega 344 — control Fanuc 6M, era 1984-88.
• Amada Pega 345 — tonnage 30-33 ton, stations 44 or 58, control Amada 04PC.

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 04PC control

A Pega 358 of this vintage shipped with the Fanuc 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.