
The AirTAC Airtac MTG Stainless Steel Mini Cylinder MTG25X100 is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The AirTAC MTG25X100 is a JIS-standard round-body mini cylinder built as a single acting PULL unit: an internal spring holds the rod extended at rest, and compressed air retracts (pulls) the rod on the work stroke. With a 25 mm bore and 100 mm stroke it delivers about 132.6 N of net pull at 0.5 MPa and 215 N at 0.7 MPa, figures already measured after the spring, so what you see is what the rod actually pulls. One air line is all it needs, since air is only consumed on the pull stroke while the spring does the return out, which simplifies plumbing and cuts valve cost on one-way draw, retract, close, and tension motions.
Construction is a riveted SUS304 stainless barrel with a hard-chromed 10 mm rod (male thread M10x1.25) and a 1/8" port on every bore in the series. Operating pressure is 0.2 to 1.0 MPa (28 to 145 psi) with 1.5 MPa (215 psi) proof, air filtered to 40 um, and a speed range of 50 to 800 mm/s. Fixed anti-impact bumper pads soften the stroke ends but do not lock or hold a load: on air loss the spring pushes the rod back out to its extended rest position. For a realistic working pull, budget roughly 0.6 of the rated force, about 80 N, which is a safe vertical load of around 8 kg for this bore. If you need two-way powered travel or a stroke beyond the 150 mm spring-return limit, step up to the double-acting MG series.
| Model | Airtac MTG Stainless Steel Mini Cylinder MTG25X100 |
|---|---|
| Series | MTG JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 | 132.6 N |
| 0.7 MPa | 215.0 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). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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, and the spring pushes it back into the locked position the moment air is released, a fail-safe fit for clamping nests.
The spring keeps the idler roller pushed out to maintain belt or web tension, while the air stroke retracts the roller for threading or changeover.
On small chutes, guides, and diverters, the 132.6 N pull closes the shutter under air power and the spring reopens it automatically when the valve vents.
Choose the MTG25X100 when your motion is a one-way pull and 132.6 N at 0.5 MPa (about 215 N at 0.7 MPa) covers the load. Bore 20 is the smallest MTG at 84.8 N pull; bore 32 gives 224.8 N and bore 40 gives 339.1 N if you need more. Remember the behaviour: the spring extends the rod, air retracts it, and the minimum working pressure is 0.2 MPa because the spring must be overcome. The spring return caps standard strokes at 150 mm for this bore, so 100 mm is within range; for longer travel or powered return, use the double-acting MG. Mounting options are LB foot, FA flange, CB clevis, and SDB pivot, plus I and Y rod knuckles. Order the -S option if you want position sensing with CMSG, DMSG, or EMSG switches; this non-S model carries no magnet and accepts no sensor.
Quick checklist
The net pull, already after the spring, is 132.6 N at 0.5 MPa and 215 N at 0.7 MPa. Operating pressure is 0.2 to 1.0 MPa (28 to 145 psi) with a 1.5 MPa (215 psi) proof pressure, air filtered to 40 um, and a working temperature of -20 to +70 C. Speed range is 50 to 800 mm/s, and the port is 1/8".
The internal spring extends the rod to its rest position; applying air retracts (pulls) it in. On air loss the rod extends again, so the cylinder does not hold a load and the bumper pad is not a brake. This differs from the MSG, which is a single acting push type, and from the double-acting MG, which powers both directions. Add the -S magnet option to mount CMSG, DMSG, or EMSG switches; without the S code no sensor can be fitted.
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