Airtac MG Stainless Steel Mini Air Cylinder MG20X25
The AirTAC Airtac MG Stainless Steel Mini Air Cylinder MG20X25 is a genuine double acting JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
About the Airtac MG Stainless Steel Mini Air Cylinder MG20X25
With a 20 mm bore and a short 25 mm stroke, this MG delivers about 157 N push and 131.9 N pull at 0.5 MPa (219.8 N / 184.7 N at 0.7 MPa) while running double acting on filtered air from 0.15-1.0 MPa = 22-145 psi. The JIS round body pairs a SUS304 stainless barrel with a hard-chrome plated rod, so it shrugs off damp washdown corners where painted minis swell and flake. A fixed anti-impact bumper pad softens each direction change at the stroke end; it decelerates only and is not an adjustable air cushion.
Practically, the 157 N push at 0.5 MPa means you should plan for roughly 94 N of real work (about 9.5 kg lifted vertically with a 2:1 margin), which suits light clamping and small part transfer. Because the frame follows the JIS mini-cylinder standard, it drops onto standard JIS brackets and I / Y rod knuckles without re-machining. This SKU carries no magnet, so CMSG / DMSG / EMSG switches cannot be fitted - order the S code if sensing is needed.
Airtac MG Stainless Steel Mini Air Cylinder MG20X25 Technical Specifications
| Model | Airtac MG Stainless Steel Mini Air Cylinder MG20X25 |
|---|---|
| Series | MG JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 anti-impact bumper pads |
| Max standard stroke | Up to 500 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 | 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 MG Stainless Steel Mini Air Cylinder MG20X25
| MG | JIS round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MG Stainless Steel Mini Air Cylinder MG20X25 Is Used
Small fixture clamping
The 157 N push at 0.5 MPa (about 94 N usable) is enough to hold light aluminium or plastic workpieces in drilling and assembly jigs over the short 25 mm clamp travel.
Packaging line reject pusher
A 25 mm stroke sweeps small cartons or blisters off a conveyor lane; the fixed bumper pad softens the kick at each end of the fast 30-800 mm/s cycle.
Lab and test station actuation
The SUS304 stainless barrel and hard-chrome rod tolerate the washdown and mild chemicals of bench-top test rigs, lifting parts of about 9.5 kg vertically with margin.
Is the Airtac MG Stainless Steel Mini Air Cylinder MG20X25 the Right Cylinder?
At 157 N push at 0.5 MPa this bore 20 sits at the bottom of the MG range; step up to bore 25 (245 N) for heavier clamps or drop to a smaller AirTAC series if 157 N is already generous. If your cycle needs adjustable end-of-stroke damping for higher speeds or heavier moving mass, the cushioned MGC variant is the right family instead. Mount it with LB foot, FA flange, CB clevis or SDB pivot, and add the S magnet code if you later want CMSG / DMSG / EMSG switches. Note that when air is lost the piston drifts freely - for a held position fit an external rod lock or a pilot check valve. The 25 mm stroke keeps rod bending negligible, but keep side loads off the 8 mm rod in any fixture.
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 0.15 – 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 MG Stainless Steel Mini Air Cylinder MG20X25 FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N; at 0.7 MPa that rises to 219.8 N push and 184.7 N pull. The theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa = 22-145 psi with a 1.5 MPa = 215 psi proof pressure, and speed spans 30-800 mm/s.
Not on this SKU. It has no built-in magnet (no S code in the model number), so CMSG / DMSG / EMSG switches cannot detect the piston. Order the magnet version (MG20X25S) if you need end-of-stroke sensing. The cylinder itself is a JIS round-body stainless mini with a 1/8" port and an 8 mm rod with M8x1.25 male thread.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MG Stainless Steel Mini Air Cylinder MG20X25
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.