Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-75S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-75S 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 MAJ25X500-75S
Long reach with a tunable end: MAJ25X500-75S is a double-acting mini cylinder whose external stop screw lets you set the extend stroke anywhere up to 75 mm short of its 500 mm full travel. The 25 mm bore yields 245.3 N at 0.5 MPa; kept conservative, roughly 147 N is available for real work.
Note that 500 mm is a made-to-order length for this bore - the standard chart ends at 300 mm. Construction is a riveted stainless round barrel with a hard-chrome carbon-steel rod (20 um plating), which handles humidity and light washdown far better than painted or plain-aluminium mini bodies. Bumper pads at both ends are fixed: they soften impact but are not an adjustable cushion - specify MACJ when pneumatic cushioning is needed.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-75S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-75S |
|---|---|
| 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 MAJ25X500-75S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×500 | 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 MAJ25X500-75S Is Used
Cup filler elevator
Lowers a filling head into yogurt cups; about 12 kg of vertical lift with a 2:1 margin (245.3 N equals 25 kg raw).
Pallet divert blade
Kicks cartons onto a spur line at the end of a roller conveyor, with the last 75 mm of throw cut back via the stop screw.
Sample tray indexer
Advances lab sample trays inside a humidity-controlled cabinet where the stainless barrel shrugs off condensation.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X500-75S the Right Cylinder?
Compare bores before committing: 20 mm gives 157.0 N, this 25 mm gives 245.3 N, and 32 mm lifts that to 402.2 N at 0.5 MPa. Over a 500 mm stroke, side loads are the main rod killer - add external guidance or pick the FA flange so the 10 mm rod is not bent. Remember the adjuster is an end stop only; on air failure the piston moves freely, so it cannot hold position the way a brake does. The magnet is standard, so CMSG / DMSG / EMSG sensors drop on from day one. Run it on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
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 MAJ25X500-75S FAQ
Full picture for the 25 mm bore: 245.3 N pushing and 206.1 N pulling at 0.5 MPa; 343.4 N pushing and 288.5 N pulling at 0.7 MPa; 50 kgf theoretical ceiling at 1.0 MPa. Ports are 1/8", rod thread M10x1.25, rod 10 mm, and the ordered -75 window is how far the stop screw can shorten extend travel.
The barrel is stainless steel and the 10 mm piston rod carries a 20 um hard-chrome plating, so splash, mist and outdoor air are handled far better than by painted or plain-aluminium minis. The aluminium alloy covers are riveted to the tube, and ports are 1/8" on both covers.
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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