Airtac MTG Stainless Steel Mini Cylinder MTG20X150S
The AirTAC Airtac MTG Stainless Steel Mini Cylinder MTG20X150S is a genuine single acting, pull (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke150 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MTG Stainless Steel Mini Cylinder MTG20X150S
The MTG20X150S is a JIS-standard round-body mini cylinder built for single acting pull duty: an internal spring holds the rod extended at rest, and compressed air retracts (pulls) it on the work stroke. With a 20 mm bore and a 150 mm stroke, it delivers about 84.8 N of net pull at 0.5 MPa and 137.5 N at 0.7 MPa, already after the spring is subtracted. Only one air line is needed, so plumbing stays simple and the valve circuit is minimal - ideal when the motion is a one-way draw, retract, close or tension action. If air is lost, the spring simply pushes the rod back out to its extended rest position.
Construction suits damp and washdown surroundings: a SUS304 stainless barrel, a hard-chrome (20 um) carbon-steel rod, riveted rolled covers and a fixed anti-impact bumper pad that softens the stroke ends without locking or braking a load. The fitted magnet (the S in the code) accepts CMSG, DMSG or EMSG switches for end-of-stroke signalling. Running on air filtered to 40 um at 0.2-1.0 MPa (28-145 psi) with speeds of 50-800 mm/s, it covers a practical working pull of roughly 5 kg (about 0.6 of the rated pull at 0.5 MPa, around 51 N) before you should step up a bore size.
Airtac MTG Stainless Steel Mini Cylinder MTG20X150S Technical Specifications
| Model | Airtac MTG Stainless Steel Mini Cylinder MTG20X150S |
|---|---|
| Series | MTG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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.
Theoretical Output Force (Ø20mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 84.8 N |
| 0.7 MPa | 137.5 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MTG Stainless Steel Mini Cylinder MTG20X150S
| MTG | JIS round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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.
Where the Airtac MTG Stainless Steel Mini Cylinder MTG20X150S Is Used
Retract a locating pin
Air pulls the 8 mm rod in to withdraw a gauge or locating pin from a fixture, and the spring pushes it back out to the ready position the moment air is released - one valve, one line, no return plumbing.
Draw a tape or web tensioner arm
The 84.8 N net pull at 0.5 MPa (about 5 kg of practical working load) is well matched to keeping light webs, tapes or labels under steady tension while the spring takes up the slack on air-off.
Close a sliding shutter or gate
Use the work stroke to close a small guard shutter or chute gate on packaging and assembly equipment; the spring reopens it automatically whenever the air supply drops, giving a fail-safe open position.
Is the Airtac MTG Stainless Steel Mini Cylinder MTG20X150S the Right Cylinder?
Size the MTG20X150S by its net pull, not its bore: 84.8 N at 0.5 MPa and 137.5 N at 0.7 MPa, already net of the spring. A safe rule of thumb is to load it to about 0.6 of the rated pull, roughly 51 N or 5 kg, so verify your draw or retract load against that figure before ordering. Remember the spring-extends / air-retracts behaviour: air pulls the rod in, and the spring returns it out, so the rest position is extended. The minimum working pressure is 0.2 MPa because the spring must be overcome; below that the rod will not retract. The 150 mm stroke is the maximum standard stroke for this bore, since the return spring caps travel - for longer strokes or two-way powered motion, choose the double-acting MG series instead. Mounting options are LB foot, FA flange, CB clevis and SDB pivot, plus I and Y rod knuckles; the fitted magnet allows CMSG, DMSG or EMSG position switches. Ports are 1/8" on every MTG bore, with PT thread standard (G and NPT available).
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting (LB / FA / CB / SDB) & knuckle
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion/impact settings and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MTG Stainless Steel Mini Cylinder MTG20X150S FAQ
The net pull (already after the return spring) is 84.8 N at 0.5 MPa and 137.5 N at 0.7 MPa. Because the spring must be overcome, the minimum working pressure is 0.2 MPa; the full operating range is 0.2-1.0 MPa (28-145 psi), proof pressure is 1.5 MPa (215 psi), temperature spans -20 to +70 C, and speed runs 50-800 mm/s on air filtered to 40 um.
In this pull type the spring extends the rod and air retracts it: apply pressure through the 1/8" port to draw the rod in, release it and the spring pushes the rod back out to rest. The MSG series is the opposite (air pushes, spring returns), while the MG series is double acting with air in both directions and no spring, so it suits two-way travel and strokes beyond the 150 mm spring-return limit. The fitted magnet on this -S model accepts CMSG, DMSG or EMSG switches for position feedback.
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