Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 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 MACJ25X100-40S
With 40 mm of on-site trim in the extend stroke, the MACJ25X100-40S saves a redesign whenever the end position shifts on the machine. This double-acting mini cylinder pairs adjustable travel with a variable air cushion at both ends, and its 25 mm bore pushes 245.3 N / pulls 206.1 N at 0.5 MPa across a 0.15-1.0 MPa (22-145 psi) pressure window.
Roughly 147 N of that push is the sensible working figure once you keep a margin under the rating. Construction is a rolled stainless round body over a hard-chrome 10 mm rod, a build that shrugs off washdown where painted-aluminium minis begin to pit, with cushion screws softening landings from 30 to 800 mm/s.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 MACJ25X100-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S Is Used
Sample tray lid press
Presses lids onto lab sample trays; the 40 mm window covers different tray heights on the same benchtop station.
Label head nip on a sleeve machine
Clamps shrink-sleeve film during cutting; adjustable travel keeps the nip point aligned as film roll diameters change.
Bin-advance pawl on a storage carousel
Ratchets storage bins forward one position per cycle; the 245 N push handles loaded bin inertia over 100 mm of travel.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X100-40S the Right Cylinder?
Run the numbers either side of this bore: 20 mm yields roughly 157 N of push at 0.5 MPa and 32 mm yields 402.2 N, while this 25 mm barrel supplies 245.3 N. The stop screw sets extend position only - never count on it as a brake, because an unpressurised piston can still be pushed along by the load.
Fit an FA flange for face mounting or an LB foot set for base mounting, then add I or Y rod knuckles if the load articulates; SDB is not offered on adjustable models. The integral magnet suits CMSG / DMSG / EMSG switches straight from the box.
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 MACJ25X100-40S FAQ
At 0.5 MPa: 245.3 N push, 206.1 N pull. At 0.7 MPa: 343.4 N push, 288.5 N pull. Theoretical peak for bore 25 is 50.0 kgf at 1.0 MPa. Operating band is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
Both ends carry a variable air cushion that you meter down as loads get heavier or cycle speeds climb, protecting the aluminium covers from impact across the full 30-800 mm/s span. The cushion works alongside the 40 mm adjust window, and any supply between 0.15-1.0 MPa (22-145 psi) is accepted.
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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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