Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 MACJ20X80-30S
A 30 mm window gives commissioning real freedom: the MACJ20X80-30S ships as an 80 mm extend-stroke cylinder, and the external stop screw shortens it anywhere inside that 30 mm band once the machine is plumbed. Both ends run a variable air cushion, and double-acting push at 0.5 MPa is 157 N (131.9 N pull), with 219.8 N on tap at 0.7 MPa. Pressure spans 0.15-1.0 MPa (22-145 psi); speed 30-800 mm/s.
Underneath is the MA-series round-body build - stainless tube, hard-chrome 8 mm rod, rolled covers - which is why this mini copes in damp food and outdoor cells where painted bodies corrode. The magnet comes fitted, so CMSG / DMSG / EMSG switches are a bolt-on, not a special order. For sizing, treat about 94 N as the practical push at 0.5 MPa; that is a vertical lift of roughly 8 kg with a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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 MACJ20X80-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 MACJ20X80-30S Is Used
Pallet-stacker fork gate
On electric pallet stackers a 30 mm trim range sets the fork-lock gate per pallet spec, and the stainless barrel copes with cold-store condensation.
PCB pallet stop on SMT loaders
The cushioned ends bring the stop pin to rest without jolting loaded PCB pallets, while 94 N of practical push easily indexes the stop into the rail.
Roof-vent damper actuation
Outdoor vent dampers swing against wind load; 219.8 N push at 0.7 MPa plus the corrosion-resistant chrome rod keep the linkage moving through the seasons.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-30S the Right Cylinder?
The -30S trim band sits between the 20 mm and 40 mm variants, ideal when fixture offsets are still unknown at order time. Need more muscle? Bore 25 reaches 245.3 N push at 0.5 MPa; the bore 16 version at 100.5 N suits lighter heads. Long side-loads should be guided externally since the 8 mm rod is not a bearing. Use FA flange or LB foot mounting, I or Y knuckles for linkages, and note that the stop screw sets the extend end only - with air lost the rod can still move, so clamp loads elsewhere.
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 MACJ20X80-30S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; theoretical maximum 32 kgf at 1.0 MPa. Air is 0.15-1.0 MPa (22-145 psi), rod speed 30-800 mm/s, and the extend stroke is trimmable within the 30 mm window.
The stop screw mechanically shortens the extend stroke anywhere in the 30 mm band, and the variable air cushion at both ends decelerates the piston before contact, so faster cycles up to 800 mm/s land without hammering the covers. It is a positioning stop, not a brake against air loss.
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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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