Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 90mm 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
- Stroke90 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 MACJ25X90-20S
Fine end-of-stroke positioning is the point of the MACJ25X90-20S: an external stop screw sets extend travel anywhere from 70 to 90 mm inside its 20 mm window, and the variable air cushion at both ends absorbs the landing. It is double-acting, runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi), and pushes 245.3 N at 0.5 MPa.
That 245.3 N converts to about 25 kg of theoretical vertical lift, or a comfortable 12 kg once you keep a 2:1 margin for real tooling weight. Build quality backs it up: a stainless round barrel riveted to aluminium covers, a hard-chrome plated rod, and a standard piston magnet ready for CMSG, DMSG or EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 90 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 MACJ25X90-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×90 | 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 MACJ25X90-20S Is Used
Lane diverter for parcel chutes
Push 245 N at 0.5 MPa to steer parcels between chutes; extend travel is trimmed from 70 to 90 mm to match each chute width.
Pallet stop on a narrow-aisle transfer car
The round stainless barrel survives outdoor dock air; the end screw sets stopping depth so pallets align with the mast every cycle.
Flap tucker on a carton sealer
Cushioned ends fold flaps without bounce at up to 800 mm/s, and the 20 mm window matches carton heights from 70 to 90 mm.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S the Right Cylinder?
For this force class the 25 mm bore pushes 245 N at 0.5 MPa; drop to the 20 mm bore for 157 N or step up to the 32 mm bore for 402 N if the load shifts, all figures at 0.5 MPa. Pick FA flange or LB foot fixing, with I and Y knuckles available for rod-linkage tooling. Treat the adjuster purely as a position stop: a depressurised piston is free to settle, so plan separate holding for loads that must stay put. With 90 mm of extended rod, keep side loads minimal by guiding the tooling on its own rails.
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 MACJ25X90-20S FAQ
Expect 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push at 0.7 MPa, and a theoretical 50 kgf maximum for the 25 mm bore at 1.0 MPa. Extend travel is trimmed from 70 to 90 mm by the stop screw, the rod is 10 mm with M10x1.25 male thread, ports are 1/8", and speed spans 30-800 mm/s on 0.15-1.0 MPa (22-145 psi).
FA flange and LB foot brackets are the catalogue fixings, and I or Y rod knuckles suit pivot linkages. Adjustable-stroke versions carry no SDB back-cover arrangement. Mounting choice does not change the force ratings, and the standard-fit piston magnet keeps CMSG, DMSG or EMSG switch placement open on any of them.
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.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X90-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.