Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-30S 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 MACJ20X225-30S
With a 30 mm trim range on its extend stroke, the MACJ20X225-30S is AirTAC's round-body 20 mm bore mini cylinder in double-acting form, complete with a variable air cushion at both ends and a stainless-steel barrel rolled onto aluminium covers. Push force reaches 157 N at 0.5 MPa and 219.8 N at 0.7 MPa.
The dual cushions let you cycle anywhere in the 30-800 mm/s band and still land soft at end of stroke, which matters when the 8 mm rod carries a light clamp across 225 mm. For sizing, 157 N divided by 9.81 is about 16 kg of theoretical lift - halve it and you can lift roughly 8 kg vertically with margin to spare. Every unit ships with its magnet fitted, ready for CMSG, DMSG or EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-30S |
|---|---|
| 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 MACJ20X225-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -30 | 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 MACJ20X225-30S Is Used
Small-parts ejector
Punching machined bushings off a CNC fixture - the 30 mm window lets the operator set exact eject travel for each part family.
Snack-line diverter
Nudging snack packs onto a cross conveyor; the riveted stainless body copes with frequent hose-down that swells painted minis.
Nest seating check
Confirming part seating in an assembly nest, with a DMSG switch on the standard magnet signalling the trimmed extend position.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X225-30S the Right Cylinder?
Compare before you buy: the 16 mm bore delivers 100.5 N at 0.5 MPa and the 25 mm bore delivers 245.3 N, so pick this 20 mm barrel when your fixture needs the middle 157 N band. Its 30 mm extend trim is a positioning stop, not a load-holding device - pressure loss still lets the rod drift. FA flange and LB foot mounts plus the built-in magnet (CMSG / DMSG / EMSG ready) cover most small-machine layouts; with a 225 mm stroke, keep side loads off the 8 mm rod or guide the load externally.
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 MACJ20X225-30S FAQ
Rated 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a 32 kgf theoretical ceiling at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) of 40 um filtered air and travel between 30 and 800 mm/s.
The round stainless tube with a hard-chrome plated rod shrugs off washdown, condensation and mild chemicals that rust painted steel minis, while the variable cushion at each end tunes soft landings instead of relying on fixed bumpers.
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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