Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 250mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke250 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 MAJ25X250-30S
Stop screw travel of 30 mm makes this bore-25 unit a changeover-friendlier alternative to fixed-stroke minis: the MAJ25X250-30S is double acting, and one external screw pulls the extend stroke back to 220 mm from a full 250 mm without re-plumbing anything. At 0.5 MPa (72 psi) it delivers 245.3 N forward and 206.1 N returning, indexing small trays and carriers at 30 to 800 mm/s.
Lift check for buyers: 245.3 N converts to roughly 25 kg of vertical pull at 0.5 MPa, so holding lifts to about 12 kg keeps a 2:1 margin. The round, riveted body - stainless tube rolled onto aluminium covers with a stainless block - stays slim in tight frames, while the hard-chrome 10 mm rod and grease-retaining two-way piston seal ride out damp shop air. A magnet comes standard in every MA piston, so DMSG or EMSG switches clip on from stock.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MAJ25X250-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -30 | 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 MAJ25X250-30S Is Used
Case flag pusher
Kicking cartons past a checkweigher flag on a case packer: the 245.3 N push at 0.5 MPa moves light cartons briskly, and the 30 mm trim absorbs carton-size changes between 220 and 250 mm.
Drill jig clamp
Clamping thin sheet in a drill jig - 245.3 N at 0.5 MPa holds thin stock firmly, and the standard piston magnet feeds a DMSG switch to prove clamped before cycle start.
Shuttle table indexing
Advancing a small shuttle table one station on an assembly bench, with stroke-end bumper pads absorbing the stop at both ends of each 250 mm move.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X250-30S the Right Cylinder?
Run the sizing math against neighbours: MAJ20 manages 157.0 N at 0.5 MPa and MAJ32 reaches 402.2 N, so this 25 mm bore is the middle choice for medium loads. The 30 mm window is trim-only - it never lengthens the stroke past 250 mm, and the screw will not arrest a drifting rod when air fails, so fit an external stop where holding counts. FA flange and LB foot mounts suit most frames, with I and Y rod knuckles for pivoting joints. Ports are 1/8" and the rod thread is M10x1.25; brace long workpieces at this 250 mm reach so bending loads stay off the rod.
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 MAJ25X250-30S FAQ
At 0.5 MPa (72 psi): 245.3 N push, 206.1 N pull. At 0.7 MPa (101 psi): 343.4 N push, 288.5 N pull. Maximum theoretical force is 50 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), speed 30-800 mm/s, temperature -20 to +70 C.
Fixed anti-impact bumper pads, built into both covers of this MAJ. They decelerate the piston at the ends of travel but are not adjustable air cushions - if you need tunable cushioning, the MACJ adjustable-cushion family is the related type. The pads work the same whether the extend stroke sits at the full 250 mm or trimmed to 220 mm by the stop screw.
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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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