Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU
The AirTAC Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 130mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ20 mm
- Stroke130 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU
Generating about 157 N of push force at 0.5 MPa, this double-acting AirTAC mini cylinder packs a 20 mm bore and 130 mm stroke into a compact JIS-standard round body. Because its SUS304 stainless barrel and riveted aluminium covers yield a shorter overall length than a comparable ISO 6432 unit, it drops easily into tight machinery. The -S suffix equips the piston with a magnet for CMSG, DMSG or EMSG reed and electronic switches, while the U flat-end back cover mounts flush against frames.
The riveted rolling-packed structure pairs with a two-way oil-retaining piston seal to sustain smooth motion, and fixed TPU bumper pads soften end-of-stroke impacts. With a 1/8" port and an M8x1.25 male rod thread, it is built for 30-800 mm/s operation. Plan for roughly 94 N of actual work at 0.5 MPa, which translates to lifting an 8 kg part vertically with a 2:1 safety margin.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU Technical Specifications
| Model | Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 130 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×130 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU Is Used
Small Part Ejection
Pushes lightweight plastic mouldings out of a 20 mm bore fixture using 157 N at 0.5 MPa, with the 130 mm stroke clearing the mould platen.
Package Diverting
Extends a deflector gate on a packaging line; the SUS304 barrel shrugs off washdown while the U flat-end back cover bolts directly to the conveyor frame.
PCB Handling
Moves electronic test probes into position, relying on the -S magnet and DMSG switches to confirm the 130 mm extension for precise indexing.
Is the Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU the Right Cylinder?
If your fixture demands less push, dropping down is not an option as 20 mm is the smallest MF bore. Stepping up to the MF25 raises the 0.5 MPa push force to 245.3 N, offering a sturdier alternative for heavier tooling. This 130 mm stroke sits well within the 500 mm standard limit, but long rods invite side-load bending, so guide the load externally to prevent premature seal wear.
Remember that a standard cylinder drifts when air is removed or the valve centres, as the bumper pads only decelerate the stroke end rather than locking the rod. To suspend a load safely mid-stroke, fit an external rod lock or a pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MF20-25 Stainless Steel Mini Cylinder MF20X130SU FAQ
This 20 mm bore cylinder uses a 1/8" port. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
The JIS-standard round body is physically shorter than an ISO 6432 cylinder for the same 130 mm stroke, saving mounting length. It features a SUS304 stainless barrel for mild corrosion resistance, fixed TPU bumper pads to absorb end impacts, and a U flat-end back cover for direct rear mounting.
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