Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 200mm 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
- Stroke200 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 MACJ20X200-30S
A 30 mm adjustable window makes the MACJ20X200-30S easy to commission: wind the external stop screw back and the extend stroke shortens anywhere inside that range. The cylinder is double-acting with variable air cushions at both ends, rated 157 N push and 131.9 N pull at 0.5 MPa, and 219.8 N / 184.7 N at 0.7 MPa. Every unit ships with its magnet in place, ready for CMSG, DMSG or EMSG position sensing.
Under the skin sits a high-precision stainless tube with a hard-chrome plated rod, rolled tightly between aluminium-alloy covers - a build that survives mist, coolant splash and outdoor dust far better than bare-painted minis. Keep the working effort near 94 N at 0.5 MPa, which equals lifting roughly 8 kg vertically with margin. Proof pressure is 1.5 MPa (215 psi) and speed spans 30-800 mm/s.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 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 MACJ20X200-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×200 | 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 MACJ20X200-30S Is Used
Web tensioner
Keeps a film web taut on a packaging machine; with about 94 N of working effort at 0.5 MPa the roller pressure is easy to tune inside the 30 mm window.
Pass-box door push
Swings a cleanroom pass-box door through its final travel, landing cushion-soft at both ends to keep particle shake-down low.
Punch depth stop
Sets punch depth on a small stamping fixture; technicians shorten the extend stroke within the 30 mm window instead of swapping shims.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-30S the Right Cylinder?
Sizing check: at 0.5 MPa this bore pushes 157 N, while bore 16 gives 100.5 N and bore 25 gives 245.3 N - pick the neighbor if your force need sits near either edge. Because 200 mm of stroke magnifies side force at the rod tip, keep the load square or add external guiding. FA flange and LB foot mounts are the options, with I / Y knuckles for articulation. The trim screw shortens the extend stroke within 30 mm; it is not a mid-stroke brake, and the piston coasts if air is lost.
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 MACJ20X200-30S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa expect 219.8 N push and 184.7 N pull. The theoretical maximum stands at 32 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, at 30-800 mm/s.
The barrel is high-precision stainless steel with a hard-chrome plated rod, rolled between aluminium covers, so coolant splash, condensation and outdoor grit cause far less trouble than on painted mini cylinders. The variable air cushion at each end also lets you raise line speed without hammering the covers.
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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