Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 50mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ25 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
- 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S
With a 30 mm trim window the MACJ25X50-30S takes a 50 mm extend stroke and shortens it anywhere down to 20 mm on site - no cylinder swap, just turn the stop screw. It is double-acting with a variable air cushion at both ends, so you can run 30-800 mm/s and still land the rod quietly. At 0.5 MPa this bore pushes 245.3 N and pulls 206.1 N; at 0.7 MPa the push climbs to 343.4 N.
Construction is a round stainless-steel barrel with a hard-chrome plated rod, riveted to aluminium covers - a sealed body that shrugs off damp shop air and washdown where painted minis corrode. The magnet is built in as standard, so CMSG, DMSG or EMSG switches drop straight on. Budget roughly 147 N of real work at 0.5 MPa instead of the full 245.3 N rating and the drive keeps a healthy margin for years.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S Is Used
Carton flap tucker
On a case packer, trimming the extend stroke by up to 30 mm lets one cylinder set flaps on small and tall cartons; 245.3 N at 0.5 MPa closes them without crush marks.
Reject pusher
A 50 mm stroke trimmed to size pushes off-spec bottles off a beverage line; the variable cushions at both ends stop the rod from banging at cycle speeds up to 800 mm/s.
Reagent tray lift
Lifts about 12.5 kg vertically with a 2:1 margin, ideal for raising sample trays in an analyzer, while the stainless barrel copes with routine wipe-downs.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S the Right Cylinder?
Compare before you buy: bore 20 delivers 157.0 N at 0.5 MPa if the load is light, while bore 32 reaches 402.2 N when the job grows. Note the stop screw sets the extend position only - it is a mechanical end stop, not a brake, so the piston will still drift if air pressure is lost. Mount on an FA flange or LB foot and add I or Y rod knuckles where the linkage needs a pivot. The 10 mm rod handles this short 50 mm stroke well; guide heavy or overhung loads externally rather than side-loading 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 On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X50-30S FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa the figures are 343.4 N push and 288.5 N pull, with a theoretical peak of 50 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and speed spans 30-800 mm/s.
No. The piston magnet is standard on every MA cylinder, so CMSG, DMSG or EMSG reed and Hall switches clip onto the barrel without a special-order piston or retrofit kit.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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