Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X80-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X80-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MACJ25X80-50S
Fixed forward stops without shimming or re-plumbing: the adjuster on this 25 mm bore MACJ shortens the 80 mm extend stroke by anything up to 50 mm, set at commissioning and re-set whenever the product changes. The cylinder is double-acting with a variable air cushion at each end, pushing 245.3 N at 0.5 MPa over a 0.15-1.0 MPa (22-145 psi) range.
Washdown lines and humid cells suit its make-up - stainless barrel, hard-chrome plated rod, riveted aluminium covers - because there is no paint to chip and the rolled joints stay tight. For sizing, lean on about 147 N of the 245.3 N rating for real work; vertically that lifts near 12 kg with a 2:1 margin. Every MA piston carries a standard magnet, so a CMSG / DMSG / EMSG switch fits straight from stock.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X80-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X80-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MACJ25X80-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -50 | 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 MACJ25X80-50S Is Used
Stamping ejector pusher
Sweeping finished brackets off a small press die each cycle; 80 mm of stroke with a 50 mm trim window matches the die opening exactly.
Wire cut-to-length stop
Acting as a length stop on a wire feeder - re-dial the stop screw when the cut length changes instead of swapping cylinders.
Oven door latch actuator
Latching a washdown food oven door, where the stainless barrel and chrome rod stand up to steam better than painted units.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X80-50S the Right Cylinder?
The 16 mm bore tops out at 100.5 N push at 0.5 MPa and the 32 mm bore reaches 402.2 N, so this 245.3 N bore suits mid-range pusher and clamp duty. Remember the -50 adjuster only shortens the extend stroke and will not hold position against a falling load when air is removed - it is a stop, not a brake. Choose the FA flange for face mounting or the LB foot for base mounting; I and Y rod knuckles suit pivoting loads, and adjustable models omit the SDB and back-cover codes. Supply spans 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
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 MACJ25X80-50S FAQ
Push 245.3 N / pull 206.1 N at 0.5 MPa; push 343.4 N / pull 288.5 N at 0.7 MPa; 50 kgf theoretical maximum at 1.0 MPa. Bore 25 mm, rod 10 mm, 1/8" port, M10x1.25 male rod thread, adjustable window 50 mm, working pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
FA flange and LB foot are the standard mounts, with I and Y rod knuckles for pivoting loads; adjustable models have no SDB or back-cover option. A magnet is built in as standard, so CMSG / DMSG / EMSG switches mount without ordering a special piston. The stainless barrel and chrome-plated rod also make the unit suitable for humid or lightly washed-down areas.
Authorized Export Seller
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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