Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ25 mm
- Stroke400 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 MAJ25X400-75S
Three-quarters of the way to a half-metre of reach, with an on-site trim of up to 75 mm - that is the MAJ25X400-75S, a double-acting mini cylinder whose extend stop screw sets the final stroke at commissioning. It pushes 245.3 N and pulls 206.1 N at 0.5 MPa, climbing to 343.4 N when supply reaches 0.7 MPa. The 400 mm stroke is beyond the 300 mm standard for bore 25, so expect a made-to-order build time.
AirTAC rolls the stainless barrel, aluminium-alloy covers and stainless block into one sealed round body, and the hard-chrome plated 10 mm rod keeps sliding wear low in gritty or humid plants. Bumper pads are fixed - they blunt end-of-stroke impact but are not adjustable cushions. Halve the 0.5 MPa push and you get roughly 12 kg of vertical lift capability with a 2:1 safety margin, enough to raise a lightweight fixture plate all day.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 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 MAJ25X400-75S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -75 | 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 MAJ25X400-75S Is Used
High-shelf tote lift
Raises plastic totes of about 12 kg between pick levels in a narrow-aisle storage module, guided on twin uprights to spare the rod.
Glue-bead follower
Trails a dispensing head across a 400 mm panel path; commissioning sets the exact working stroke anywhere inside the 75 mm window.
Cable-tension take-up
Keeps steady tension on a long conveyor belt in a recycling plant, where the stainless barrel and chrome rod stand up to dust and wash-hose spray.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S the Right Cylinder?
If 245.3 N at 0.5 MPa is marginal for the job, the MAJ32 offers 402.2 N in the same round-body family; if the load is light, the MAJ20 at 157.0 N costs less. Remember the 75 mm adjuster is a mechanical end stop in the extend direction - it is not a mid-stroke lock, and on air failure the piston moves, so design a mechanical latch for held loads. At this stroke length, rod buckling and side load become real: support the load on external guides and keep thrust aligned with the rod axis. FA flange and LB foot mountings fit the covers, and the standard magnet picks up CMSG / DMSG / EMSG switches for two-point confirmation.
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 MAJ25X400-75S FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; push 343.4 N and pull 288.5 N at 0.7 MPa; 50 kgf theoretical maximum at 1.0 MPa. The extend stroke trims up to 75 mm via the external stop screw, and speed spans 30-800 mm/s.
Its stainless barrel, covers and block are rolled together into a compact riveted body, so there are no tie rods to retighten, and the stainless tube plus hard-chrome rod handle damp environments well. The magnet is standard equipment, ready for CMSG / DMSG / EMSG switches.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X400-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.