Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X25-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X25-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 25mm 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
- Stroke25 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 MACJ25X25-30S
Built around a bore 25 barrel, the MACJ25X25-30S offers the widest fine-trim span in this group: the stop screw ranges over 30 mm, covering the entire 25 mm extend stroke with margin to spare, while both ends cushion the deceleration. Double-acting as always, it delivers 245 N of push and 206 N of pull at 0.5 MPa, and 343 N push with 288 N pull at 0.7 MPa.
Construction follows the AirTAC MA pattern: a high-precision stainless tube with aluminium-alloy covers riveted and rolled into place, plus a hard-chrome plated carbon-steel rod that tolerates washdown and outdoor exposure better than painted-steel minis. The piston magnet is included rather than ordered in, so CMSG, DMSG and EMSG switches retrofit at any time. Size the load at about 147 N of working push at 0.5 MPa - roughly a 12.5 kg vertical lift when you keep a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X25-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X25-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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 MACJ25X25-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 MACJ25X25-30S Is Used
Stamping press part ejector
Ejecting washers from a small press die: the stop screw lets the setter pull the ejector back millimetre by millimetre until parts clear the nest, and 245 N at 0.5 MPa is ample for parts this light.
Process valve lever toggle
Toggling a valve lever in a water-treatment skid: the stainless barrel and chrome rod survive the humid environment, and the 30 mm adjustment span compensates for different lever geometries across valve sizes.
Bin-fill gate on a picking station
Metering small parts into picking bins: the 25 mm stroke opens and closes the gate, cushions keep the top 800 mm/s speed quiet, and a DMSG switch on the built-in magnet confirms closure before the conveyor advances.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X25-30S the Right Cylinder?
Against its neighbours: the bore 20 MA pushes 157 N at 0.5 MPa and the bore 32 reaches 402 N, placing this model in the middle for clamps, sorters and small presses. Remember that the adjuster shortens the extend stroke and holds nothing on its own - with air off the piston drifts, so retain the load by a separate means. With only 25 mm of travel, rod buckling is not a concern; spend the effort on alignment instead, and use an FA flange or LB foot, adding an I or Y knuckle if the linkage pivots. The 1/8" port and M10x1.25 male rod thread match common fixture hardware.
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 MACJ25X25-30S FAQ
Push 245 N and pull 206 N at 0.5 MPa, rising to 343 N push and 288 N pull at 0.7 MPa; theoretical maximum 50 kgf at 1.0 MPa. Supply pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, speed spans 30-800 mm/s, and the extend stroke is 25 mm with a 30 mm stop-screw adjustment span.
The magnet is fitted as standard on every MA-series piston, so CMSG, DMSG and EMSG switches clip onto the stainless barrel without a special order or piston change. Mount them along the bore for position confirmation - just note the adjuster stop only trims the extend stroke and does not hold the piston against air loss.
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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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