Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MACJ25X125-75S
The 75 mm window on this bore 25 MACJ is one of the widest trim ranges offered, so one cylinder can be re-stroked across most of its 125 mm travel as fixture needs change - no re-piping, no new model. A variable air cushion at both ends complements the stop screw by softening whatever final stroke you set. Force stands at 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, peaking around 50 kgf at 1.0 MPa; supply 0.15-1.0 MPa (22-145 psi) and run 30-800 mm/s.
Construction is a rolled stainless barrel with riveted aluminium covers and a hard-chrome plated rod - a package that tolerates humid, occasionally washed-down surroundings without paint flaking off. In practice plan on about 147 N of usable push at 0.5 MPa; that lifts roughly 12 kg vertically with margin, or supports brisk cycle work thanks to the cushions. A magnet is built into the piston as standard, so CMSG, DMSG or EMSG position switches mount straight on.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MACJ25X125-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MACJ25X125-75S Is Used
Escapement on an assembly conveyor
One part at a time is released into the nest, and the wide 75 mm window retunes the release stroke whenever part pitch changes on the line.
Dough-tray indexer in a bakery
The stainless barrel handles humid, regularly wiped-down bakery air, and 245.3 N at 0.5 MPa indexes loaded trays without hammering the covers.
Settable test-rig actuator in a lab fixture
A 75 mm window lets one cylinder serve several test profiles, while the variable cushions protect delicate specimens at end of stroke.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-75S the Right Cylinder?
Compare forces honestly: bore 20 tops out at 157 N push at 0.5 MPa, bore 32 starts at 402.2 N, and this bore 25 delivers 245.3 N - if the load needs more than about 147 N of working force, move up a bore. Keep in mind the external stop only trims extension and cannot hold position when air drops; the rod drifts freely. FA flange and LB foot mount the body, I and Y knuckles handle swivel points, and at 125 mm stroke guide any side load outside the cylinder to spare the 10 mm 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 MACJ25X125-75S FAQ
Double-acting bore 25: 245.3 N push and 206.1 N pull at 0.5 MPa; 343.4 N push and 288.5 N pull at 0.7 MPa; about 50 kgf at 1.0 MPa theoretical. Stroke 125 mm, adjustable window 75 mm, rod 10 mm, ports 1/8", pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, cushioning variable at both ends.
The stop screw sets where the extend stroke finishes inside the 75 mm window, while the variable air cushion at each end is dialed to bleed off end-of-stroke shock. Together they let you run anywhere in the 30-800 mm/s band and still land the load quietly at whatever stroke you trimmed to.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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