Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-75S 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 MACJ20X80-75S
A 75 mm window covers nearly the whole 80 mm stroke, so one MACJ20X80-75S can be trimmed from full travel down to a 5 mm extend throw as the fixture evolves. It stays double-acting throughout, with variable air cushions at both ends to soften arrival at whichever stop you dial in.
Force output is the same as any 20 mm MACJ: 157 N push and 132 N pull at 0.5 MPa, climbing to 220 N at 0.7 MPa. For lifting chores that is roughly 16 kgf of raw capacity - size real vertical loads at about 8 kg to keep a 2:1 margin. The riveted stainless round body and hard-chrome plated rod shrug off condensation and mild washdown that corrode painted minis.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-75S |
|---|---|
| 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 MACJ20X80-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 MACJ20X80-75S Is Used
Parcel diverter pushes in a courier sortation hub
Stroking anywhere between 5 and 80 mm lets one cylinder serve several chute widths, and 157 N at 0.5 MPa nudges lightweight parcels across reliably.
Glue nozzle advance on a carton closer
The 75 mm trim range matches bead start points to carton sizes; dual air cushions prevent the nozzle from snapping back at end of stroke.
Index lock on a small rotary assembly table
An 8 kg safe vertical equivalent makes the bore suitable for light locking duties, while the stainless barrel survives coolant mist near machining cells.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X80-75S the Right Cylinder?
Step down to a 16 mm bore for about 100 N at 0.5 MPa, or up to 25 mm for 245 N, when the load sits outside this band. The adjuster is an extend-stop only, not a lock - under air loss the piston drifts, so fit a holding valve for suspended loads. Mount with the FA flange, LB foot or an I / Y knuckle, and count on the built-in magnet pairing with DMSG or EMSG switches straight from stock.
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 MACJ20X80-75S FAQ
Figures for the 20 mm bore: 157 N push / 132 N pull at 0.5 MPa and 220 N push at 0.7 MPa, peaking near 32 kgf theoretically. Pressure runs 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi); speed 30-800 mm/s; 1/8" port; M8x1.25 rod thread; extend travel trims up to 75 mm.
FA flange and LB foot are the standard fixes, with I and Y rod knuckles for linkage work; the adjustable version has no SDB or back-cover code. If you later need force from both rod ends, the MACD double-rod model shares the same platform.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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