Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X200-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X200-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 200mm 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
- Stroke200 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 MACJ25X200-20S
AirTAC sized this MACJ for machines that want long travel plus a short final approach: 200 mm of stroke in a Dia 25 body, adjustable over a 20 mm window, delivering 245.3 N forward and 206.1 N back at 0.5 MPa. The double-acting piston carries a two-way seal that also stores grease, and both ends breathe through a variable cushion you can tune to the load.
Construction is a riveted round body - stainless tube, hard-chrome carbon-steel rod, aluminium covers - which holds up in damp shops where painted minis corrode. Lift math from the 0.5 MPa rating: 245.3 N is about 25 kgf, so halving for margin lets it raise roughly 12.5 kg vertically. Position feedback needs no options; the piston magnet ships standard and pairs with CMSG, DMSG and EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X200-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X200-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 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 MACJ25X200-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -20 | 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 MACJ25X200-20S Is Used
Dial table indexing
Drives the detent or index pin on a rotary assembly dial; the 20 mm window lets technicians re-zero the pin after tooling changes without shimming.
Tote lift at pick station
Raises plastic totes at an order-pick lift; halving the 25 kgf rating leaves roughly 12.5 kg of vertical lift per cylinder with margin.
PCB test fixture clamp
Clamps boards into a flying-probe test rig; the 206.1 N pull force at 0.5 MPa holds the fixture closed through the whole test cycle.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X200-20S the Right Cylinder?
Compare before committing: one bore down, a 20 mm MACJ pushes only 157 N at 0.5 MPa; one bore up, the 32 mm frame gives 402.2 N. Choose FA flange or LB foot mounting, add I or Y knuckles if the tooling needs a swivel joint (no SDB on adjustable models). Note the adjuster only shortens the extend stroke and never holds position when pressure drops - treat it as a stop, not a brake. Long 200 mm strokes on a 10 mm rod punish side load, so carry off-axis weight on external guides.
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 MACJ25X200-20S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa push is 343.4 N and pull 288.5 N; theoretical peak is 50 kgf at 1.0 MPa. Bore 25 uses a 10 mm rod, 1/8" ports and an M10x1.25 rod thread.
No. Every MACJ ships with the piston magnet built in as standard, so CMSG, DMSG or EMSG switches mount directly on the barrel for end-of-stroke or mid-zone detection at no extra option cost.
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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