Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 120mm 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
- Stroke120 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 MACJ25X120-75S
One cylinder, several product sizes: the MACJ25X120-75S offers a 120 mm extend stroke with a wide 75 mm trim window, adjusted on site via the stop screw. It is double-acting, cushioned variably at both ends, and rated 245.3 N push / 206.1 N pull at 0.5 MPa.
At up to 800 mm/s the adjustable air cushion keeps deceleration gentle, so heavier payloads do not hammer the rolled covers on long cycles. A sizing rule of thumb from the rating: count on about 147 N of real work at 0.5 MPa, close to 12 kg of vertical lift with a 2:1 safety factor. The magnet is built in as standard, so CMSG/DMSG/EMSG position switches drop on without special orders.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 120 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 MACJ25X120-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×120 | 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S Is Used
Sorter box stop
Halts mixed-size boxes on a sorting conveyor; the wide 75 mm trim is reset in minutes when carton dimensions change between runs.
Filling line lid press
Presses snap-on lids onto tubs; 245.3 N of push at 0.5 MPa seats the lid while the cushion avoids a sharp slam on tall strokes.
Hopper slide gate
Opens and closes a pellet hopper gate; the stainless barrel and chrome rod cope with dust and occasional washdown around the discharge.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X120-75S the Right Cylinder?
The 10 mm rod on a 120 mm stroke is the long-lever case in this bore - keep side loads off the rod or add external guides, especially near full extension. Force-wise, the MACJ20 (157 N at 0.5 MPa) suits lighter duty while the MACJ32 (402.2 N) handles the next class up. The 75 mm window is an extend-stroke end stop, not a load-holding brake: expect drift if air is lost. Mount by FA flange or LB foot on a 0.15-1.0 MPa (22-145 psi) supply.
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 MACJ25X120-75S FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; push 343.4 N and pull 288.5 N at 0.7 MPa; theoretical maximum 50 kgf at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, rod thread M10x1.25, port 1/8".
Yes. The magnet is standard equipment on every MA cylinder, so CMSG, DMSG or EMSG switches mount directly on the stainless barrel and confirm the trimmed extend position set by the 75 mm stop screw. The stop is a mechanical end limit only - it does not hold the rod against drift when air pressure falls.
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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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