Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 350mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke350 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S
The MAJ25X350-20S pairs a made-to-order 350 mm travel (above the 300 mm standard for bore 25) with a 20 mm window the stop screw trims during commissioning. It is double-acting with fixed anti-impact bumper pads at each end, delivering 245.3 N forward and 206.1 N return at 0.5 MPa, or up to 343.4 N when supply reaches 0.7 MPa. Operating range: 0.15-1.0 MPa (22-145 psi), -20 to +70 C, 30-800 mm/s.
Structurally it is a rolling-packed round body - stainless barrel, aluminium covers, hard-chrome carbon-steel rod - compact enough for tight machine frames and resistant to light washdown. Size real loads around 147 N of usable push, which lifts about 12.5 kg straight up at a 2:1 margin. The standard-fit magnet means CMSG / DMSG / EMSG switches mount without ordering options.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 350 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 300 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S Is Used
Carton sorter kicker
Diverts cartons at a sorter diverter where lane offsets vary by 20 mm between routes; 245 N of push kicks parcel boxes off the main line cleanly.
Bakery tray infeed pusher
Feeds trays into a bakery oven infeed conveyor; floury, humid air is no problem for the stainless barrel and hard-chrome rod.
Solder pallet clamp
Clamps electronics pallets before wave solder; 206.1 N of pull releases the clamp reliably when the cycle reverses.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S the Right Cylinder?
Bore 20 tops out at 157 N push at 0.5 MPa, so if your fixture needs more than that, this 25 mm unit at 245.3 N is the right step; bore 32 waits above with 402.2 N. The 20 mm window covers typical tolerance take-up during set-up. Pair the FA flange or LB foot with I or Y rod knuckles where the load pivots. At 350 mm extension, side thrust becomes the main enemy of the 10 mm rod - guide the part, not the cylinder. And since the adjuster is only a travel stop, unpressurized holding needs a separate locking arrangement.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X350-20S FAQ
245.3 N extend and 206.1 N retract at 0.5 MPa; 343.4 N and 288.5 N respectively at 0.7 MPa; 50.0 kgf maximum theoretical at 1.0 MPa. Pressure window 0.15-1.0 MPa (22-145 psi), temperature -20 to +70 C, speed 30-800 mm/s.
Choose an FA flange or LB foot as the base mounting; I and Y rod knuckles suit pivoting loads, and the adjustable-stroke version carries no SDB or back-cover mount code. Over the 350 mm stroke, keep the 10 mm rod aligned - side loads shorten seal life quickly.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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