Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-100S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-100S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 225mm 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.
- BoreØ20 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MACJ20X225-100S
Longer reach with a wide trim: the MACJ20X225-100S offers a 225 mm extend stroke that can be shortened by as much as 100 mm on site. Bore 20 pushes 157 N at 0.5 MPa - about 94 N once you keep a sensible reserve - and retracts with 131.9 N. In lifting terms, count on roughly 8 kg vertical with a 2:1 safety factor.
The round stainless barrel is rolled onto aluminium covers with an internal stainless block, a construction that seals well and survives moisture where painted minis rust. Cushioning is variable at both ends and the piston magnet is standard equipment for CMSG, DMSG and EMSG sensing.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-100S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-100S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MACJ20X225-100S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -100 | 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 MACJ20X225-100S Is Used
Batch pusher at a palletizer infeed
Squares rows of small cases before layer forming; 157 N at 0.5 MPa is enough for the sweep, and 225 mm of stroke covers a wide infeed.
Ejector on a bottle filling line
Pushes underfilled bottles off the rail; the washdown-friendly stainless body takes splash and rinse-down, and the 100 mm window adapts to different bottle formats.
Bearing press-fit on a small shaft line
Seats bearings onto motor shafts; 219.8 N at 0.7 MPa handles light interference fits, with the end cushion softening the seat.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-100S the Right Cylinder?
Bracket the load first: at 0.5 MPa the 16 mm bore offers 100.5 N, this bore 157 N and the 25 mm 245.3 N, so anything near 94 N of working force lands here. A 225 mm stroke magnifies alignment error, so run the payload in guides rather than hanging it on the rod. The 100 mm adjuster shortens the extend stroke only and holds nothing if pressure drops - add an external stop where holding matters. FA flange or LB foot, with PT, G or NPT port threads.
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 MACJ20X225-100S FAQ
Count on 157 N extend and 131.9 N retract at 0.5 MPa, climbing to 219.8 N and 184.7 N at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. Pressure range is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, and the 225 mm extend stroke trims by up to 100 mm.
An external stop screw caps the extend stroke anywhere up to 100 mm short of the full 225 mm; it cannot add length beyond the ordered stroke. Combined with the variable cushion at both ends you can tune both distance and landing. Note it is a position stop, not a mid-stroke brake.
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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.
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Most inquiries answered within 7-8 hours.
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