Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-40S 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 MAJ25X500-40S
A 500 mm stroke in a compact round body sets the MAJ25X500-40S apart: 245.3 N push at 0.5 MPa, 343.4 N at 0.7 MPa, and 206.1 N of pull at 0.5 MPa, all from a riveted stainless barrel that tolerates washdown and outdoor grit. The extend stroke shortens by up to 40 mm via the external stop screw.
Size the job at roughly 147 N of force at 0.5 MPa, close to 12 kg of vertical lift with a 2:1 safety factor. Unlike painted-steel minis, the stainless tube and 20 um hard-chrome rod shrug off moisture and cleaning chemicals. The magnet is built in at no extra option code, feeding CMSG, DMSG or EMSG switches, and the fixed bumper pads decelerate the piston at both ends of travel.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-40S |
|---|---|
| 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 MAJ25X500-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -40 | 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 MAJ25X500-40S Is Used
Camera z-lift
Lifts a vision camera head between inspection heights on a packaging line, staying within the 12 kg vertical-lift equivalent.
Scrap chute gate
Swings a press-shop scrap chute gate open, using 245.3 N of push at 0.5 MPa and the 40 mm window to fine-tune the open position.
Bagging pusher
Pushes filled bags onto a takeaway belt at a bagging station, where the hard-chrome rod survives dusty, damp air.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-40S the Right Cylinder?
Bore 25 standard strokes stop at 300 mm, so the 500 mm travel is a made-to-order item. For comparison, a 20 mm bore pushes 157 N at 0.5 MPa and a 32 mm bore pushes 402.2 N - pick the size your real load needs rather than defaulting upward. The -40 window only limits the extend direction; it cannot lock the rod against drift when pressure is lost, so use a separate clamp to hold position. Mount with an FA flange or LB foot, add an I or Y knuckle at the rod, and support long side loads with an external guide bushing.
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 MAJ25X500-40S FAQ
Expect 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, and a theoretical 50 kgf ceiling at 1.0 MPa. Supply is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi); rod speed 30-800 mm/s; 10 mm rod with M10x1.25 male thread; 1/8" air ports.
FA flange and LB foot brackets, plus I or Y rod knuckles, cover most fixturing. The external stop screw lets you shorten the extend stroke anywhere inside the ordered 40 mm window - it cannot add travel beyond the 500 mm base stroke. Bumper pads at each end are fixed, and since the rod drifts on air loss, a separate clamp is needed to hold position.
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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