Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-10S 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 MACJ20X80-10S
Small trim, tight control: the MACJ20X80-10S gives an 80 mm extend stroke that can be shortened on site by up to 10 mm with the stop screw, and every stop lands on a variable air cushion. Double-acting bore 20 output reaches 157 N push and 131.9 N pull at 0.5 MPa, enough for light pick-and-place heads and gate latches. Running range is 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
The riveted stainless round barrel shrugs off mild corrosion and washdown far better than painted-steel minis, and the hard-chrome 8 mm rod keeps scoring away in damp shops. A magnet is built in as standard, so CMSG or DMSG switches clip on without a special piston. Plan on roughly 94 N of real work at 0.5 MPa rather than the full 157 N rating, and the bore will lift about 8 kg vertically with a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-10S |
|---|---|
| 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 MACJ20X80-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -10 | 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 MACJ20X80-10S Is Used
Bottling line stop-gate positioning
A 10 mm trim window lets a bottle-stop gate on a filling conveyor be set precisely per bottle pitch, with cushions absorbing the gate landing at up to 800 mm/s.
Carton tab press-off
About 94 N of practical force at 0.5 MPa is ample to snap perforated tabs on folding cartons before sealing, in humid packing halls where the stainless barrel resists condensation.
Sample slide eject in lab analysers
Pushing sample slides off a tray needs only a few newtons; the 8 kg vertical-lift headroom and standard magnet feed an EMSG switch for slide-present detection.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-10S the Right Cylinder?
MACJ20X80-10S suits fixtures needing only a few millimetres of final adjustment; the -20S variant doubles the trim range if commissioning demands it, bore 16 at 100.5 N push (0.5 MPa) fits tighter envelopes, and bore 25 at 245.3 N adds about 55% more force for heavier heads. The stop screw is a mechanical extend-end stop, not a mid-stroke lock, so the rod still drifts on air loss. FA flange or LB foot mounts with I / Y knuckles cover the fixings, and the 1/8 inch port keeps manifolds compact.
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 MACJ20X80-10S FAQ
At 0.5 MPa the bore 20 barrel delivers 157 N push and 131.9 N pull; at 0.7 MPa that rises to 219.8 N push and 184.7 N pull. The theoretical ceiling is 32 kgf at 1.0 MPa. Air supply spans 0.15-1.0 MPa (22-145 psi) and rod speed 30-800 mm/s.
Yes. Every MACJ20X80-10S ships with a magnet already fitted, so CMSG, DMSG or EMSG switches mount straight onto the stainless barrel. The 10 mm stop screw shortens the extend stroke only - it is not a mid-stroke brake.
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