Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X25-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X25-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 25mm 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.
- BoreØ32 mm
- Stroke25 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 MACJ32X25-20S
The 20 mm trim window on this MACJ32X25 gives fitters a wider on-site adjustment band: the extend stroke can be walked down from the ordered 25 mm as tooling needs change. It stays double-acting throughout, with a variable cushion at each end to absorb the last of the impact. Push force at 0.5 MPa is 402 N; halved for a 2:1 margin, that is enough to lift about 20 kg vertically.
Underneath sits a rolled stainless barrel with a hard-chrome carbon-steel rod and aluminium covers - a round-body package that shrugs off damp workshops. With the standard magnet, sensor drops from the CMSG, DMSG and EMSG range need no special piston order.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X25-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X25-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 25 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 500 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MACJ32X25-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 MACJ32X25-20S Is Used
Stopper pin on a rotary indexing table
Pops up to arrest parts between stations with 402 N behind it, and the 20 mm window absorbs fixture height differences without reordering a different stroke.
Side-guide actuator for bottle lanes
Sets guide rail gap on a filling line; the cushioned stops stop glass bottles from rattling, and washdown splash is no threat to the stainless barrel.
Sample press in a lab automation cell
Presses microplate lids home with about 241 N of practical working force at 0.5 MPa, while magnet switches confirm each press cycle to the controller.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X25-20S the Right Cylinder?
Sizing check: at 0.5 MPa the next bore down (25 mm) manages 245 N push and the next up (40 mm) 628 N, so 402 N places this cylinder squarely in the mid-mini class. If your task needs the rod parked under load, remember the stop screw trims the extend stroke but is not a brake - pressure holds the position, not the adjuster.
Foot (LB) or flange (FA) plates cover frame mounting, and I or Y rod knuckles take up slight misalignment at the rod end.
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 MACJ32X25-20S FAQ
Push at 0.5 MPa is 402 N and pull at 0.5 MPa is 346 N. At 0.7 MPa the extend side reaches 563 N and the retract side 484 N. The theoretical ceiling at 1.0 MPa works out to 82 kgf. Supply air between 0.15-1.0 MPa (22-145 psi) and travel 30-800 mm/s.
An external stop screw shortens the extend stroke anywhere within the 20 mm window of the ordered 25 mm travel; it cannot lengthen the stroke beyond that. It is a mechanical end stop, so with air removed the piston still moves - treat it as a stroke trim, never a load lock. Both ends also carry a variable air cushion.
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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