
The AirTAC Airtac MTG Stainless Steel Mini Cylinder MTG32X125S is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The MTG32X125S is a JIS-standard round-body mini cylinder built as a single acting PULL unit: an internal spring holds the rod out at rest, and compressed air retracts (pulls) it through the 125 mm stroke. At the 32 mm bore this gives about 224.8 N of net pull at 0.5 MPa and 363 N at 0.7 MPa, figures already measured after the spring, so what you see is what reaches the load. Working pressure runs from 0.2 MPa (28 psi) up to 1.0 MPa (145 psi), with a 1.5 MPa (215 psi) proof rating and a speed band of 50 to 800 mm/s.
Because only one air line is needed, plumbing stays simple and the valve count drops, which suits one-way draw, retract and close motions. The 32 mm barrel is SUS304 stainless with a riveted construction and a 12 mm hard-chrome steel rod (male thread M10x1.25), so it shrugs off damp and washdown environments, and a fixed anti-impact bumper pad softens each stroke end. The S code means a magnet is fitted, so CMSG, DMSG or EMSG switches can report rod position. As a rule of thumb, size the live load to about 0.6 of the pull force, roughly 135 N or 13 kg for this cylinder.
| Model | Airtac MTG Stainless Steel Mini Cylinder MTG32X125S |
|---|---|
| Series | MTG JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 150 mm |
Specifications follow the official AirTAC MG-series (JIS standard) datasheet. Barrel: SUS304 stainless steel (round-body, riveted construction); piston rod: carbon steel with 20µm hard-chrome plating. Thread options: PT (blank) / G / NPT.
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 224.8 N |
| 0.7 MPa | 363.0 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
| MTG | JIS round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
| FA / LB / CB / SDB | Mounting: FA flange, LB foot, CB clevis, SDB pivot bracket (with CB). |
MG-family variants: MG / MGC (double acting ±cushion), MSG / MTG (single acting push / pull), MGD / MGCD (double rod ±cushion). Accessories: LB foot, FA flange, CB clevis, SDB pivot block, plus I and Y knuckles. Thread PT (blank) / G / NPT.
Air pulls the pin out of a fixture or die on demand; if air is lost, the spring pushes the pin back to its extended, engaged rest position.
The spring keeps the idler roller pushed out to maintain belt or web tension, and each air stroke retracts the roller for threading or release.
Draw a guard shutter or gate shut with one air line; the spring reopens it automatically the moment pressure drops.
Choose the MTG32X125S when your motion is a one-way pull of about 135 N or less at 0.5 MPa (224.8 N available, 363 N at 0.7 MPa) over a 125 mm stroke. Step down to bore 20 or 25 for lighter draws, or up to bore 40 (339.1 N at 0.5 MPa) for heavier ones. Remember the direction of travel: the spring extends the rod and air retracts it, and the minimum working pressure is 0.2 MPa (28 psi), below which the spring wins. The spring return also caps standard strokes at 150 mm for this bore; if you need two-way powered travel or a longer stroke, move to the double-acting MG series. Mounting options are LB foot, FA flange, CB clevis and SDB pivot, plus I and Y rod knuckles, and the fitted magnet accepts CMSG, DMSG or EMSG switches. Ports are 1/8" on every MTG bore.
Quick checklist
Net pull (already after the spring) is 224.8 N at 0.5 MPa and 363 N at 0.7 MPa. Operating pressure is 0.2 to 1.0 MPa (28-145 psi), proof pressure is 1.5 MPa (215 psi), fluid is air filtered to 40 um, temperature range is -20 to +70 C, and speed is 50 to 800 mm/s. The port is 1/8" and the rod thread is M10x1.25.
In the MTG the spring extends the rod and air retracts (pulls) it, so on air loss the rod returns to its extended rest position; it does not hold a load, and the fixed bumper pad only softens the stroke ends. The MSG is the mirror image (single acting push, spring retracts), while the MG is double acting with powered air in both directions for two-way travel or strokes beyond 150 mm. The S in MTG32X125S means a magnet is fitted for CMSG, DMSG or EMSG position switches.
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