Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 500mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke500 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 MAJ25X500-30S
For long-travel work in wet or dusty plants, the MAJ25X500-30S combines a rolled stainless round body with a 25 mm bore and a 500 mm stroke whose extend limit can be trimmed by up to 30 mm via an external screw. Push is 245.3 N at 0.5 MPa and 343.4 N at 0.7 MPa; pull at 0.5 MPa is 206.1 N.
Treat 0.5 MPa as roughly 147 N of usable force for sizing, which is about 12 kg of vertical lift at a 2:1 margin. The two-way piston seal doubles as a grease reservoir, cutting lube attention between services. Every unit carries a standard magnet for CMSG, DMSG and EMSG reed switches, and the bumper pads take the sting out of stroke end without adjustable cushioning, which remains a MACJ feature.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 500 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 MAJ25X500-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×500 | 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 MAJ25X500-30S Is Used
Crate diverter
Diverts plastic crates between two bottling-line lanes with a 245.3 N push at 0.5 MPa, trimming arrival position within the 30 mm window.
Greenhouse vent push
Opens heavy roof vents on a commercial greenhouse, where the stainless barrel handles humidity season after season.
SMT pallet stop
Halts solder pallets at an SMT loading station; the standard magnet signals home via a CMSG switch.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-30S the Right Cylinder?
Since bore 25 tops out at 300 mm standard, the 500 mm stroke is built to order. Downsize to a 20 mm bore (157 N push at 0.5 MPa) when the load is light; upsize to 32 mm (402.2 N) for heavier pushes. The adjuster is an extend-stop, not a position lock - on air loss the rod still moves, so hold the load by other means. Fix with an FA flange or LB foot and pick I or Y rod knuckles as needed; on a stroke this long, align the load or add external guides so bending stress stays off the chrome 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 MAJ25X500-30S FAQ
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa: 343.4 N push and 288.5 N pull. Theoretical maximum force at 1.0 MPa is 50 kgf. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, proof tested at 1.5 MPa (215 psi), and strokes at 30-800 mm/s through 1/8" ports.
A magnet is standard in every MAJ piston, so CMSG, DMSG or EMSG reed switches clamp straight onto the barrel and signal end positions without a special-order cylinder. The trim screw itself is only a mechanical extend stop; on air loss the rod can still drift, so do not use it to park a load.
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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