Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-75S 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 MACJ20X225-75S
Built for longer travels, the MACJ20X225-75S swings 157 N at 0.5 MPa (219.8 N at 0.7 MPa) across 225 mm, and the external stop screw lets you trim the extend stroke anywhere inside a 75 mm window without swapping the cylinder. A variable air cushion at both ends absorbs end-of-stroke shock, so faster cycles in the 30-800 mm/s band stay gentle on the covers.
The stainless round barrel with a hard-chrome plated rod handles washdown and humid air far better than painted mini bodies, and the riveted aluminium covers keep the seal tight. Every MA-series piston carries its magnet as standard, so CMSG, DMSG or EMSG switches mount straight on. Plan on roughly 94 N of real pushing force at 0.5 MPa instead of the full rating to leave headroom in your design.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-75S |
|---|---|
| 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 MACJ20X225-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -75 | 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 MACJ20X225-75S Is Used
Carton push-off on packaging conveyors
The 225 mm travel reaches across a 400 mm wide belt, and the 75 mm trim window lets line staff tune the throw whenever carton sizes change.
Z-axis lift in compact pick-and-place cells
The bore generates about 16 kgf at 0.5 MPa, so halving for a 2:1 margin it raises roughly 8 kg trays or fixtures between stations.
Sample slide pusher in lab automation
The cushioned ends stop glass slides from cracking when the rod bottoms out, and the stainless surfaces wipe clean in humid incubator enclosures.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-75S the Right Cylinder?
Bore 16 delivers 100.5 N and bore 25 reaches 245.3 N at 0.5 MPa, so the 20 mm bore at 157 N fits light-to-medium duties between them; step to 25 mm if your load needs over 94 N continuous. The adjuster is a mechanical end stop for the extend stroke, not a mid-stroke brake - if air drops, the rod will still drift, so clamp or support the load separately. Mount via FA flange or LB foot, add I or Y rod knuckles as the job needs (no SDB on adjustable versions). With 225 mm of stroke on an 8 mm rod, keep side loads low or add external guides to avoid rod bending.
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 MACJ20X225-75S FAQ
Double-acting with adjustable stroke and a variable cushion at both ends. At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa, 219.8 N push and 184.7 N pull; theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), air must be filtered to 40 um, speeds run 30-800 mm/s, and the 1/8" port serves this 20 mm bore.
The barrel is stainless steel and the rod is carbon steel with a 20 um hard-chrome plating, so mild splash, condensation and cleaning agents do not chew through a coating the way they do on painted minis. The aluminium covers are riveted onto the tube in a rolling-packed structure that stays sealed over years of cycling.
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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