Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X20-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X20-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 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 MACJ20X20-10S
On a 20 mm stroke, a 10 mm trim window gives you half the travel as on-site adjustment: the MACJ20X20-10S lets you pull the extend stroke down toward 10 mm once the machine is assembled. Double-acting throughout, with a variable air cushion at each end, it converts filtered air at 0.15-1.0 MPa (22-145 psi) into a 157 N push at 0.5 MPa.
For a compact round body, the build is unusually robust: a stainless-steel barrel with aluminium covers rolled and riveted on, plus a hard-chrome plated rod (20 um) that shrugs off condensation inside enclosures and test rigs. Plan on roughly 94 N of usable force at 0.5 MPa - enough to lift about 8 kg vertically with a 2:1 margin - which covers most small clamp-and-hold jobs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X20-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X20-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MACJ20X20-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 MACJ20X20-10S Is Used
PCB test fixture clamp
A 20 mm stroke clamps boards into a nest; about 94 N of working force at 0.5 MPa holds without crushing, and the 10 mm window absorbs nest-height tolerances.
Sample pusher in a lab analyser
Short, cushioned advances move cuvettes or samples between stations; the stainless barrel copes with reagent splashes better than painted bodies.
Print-head or stamp gap setting
Set the extend stroke anywhere within the 10 mm window to match media thickness, no cylinder swap needed when the die or head changes.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X20-10S the Right Cylinder?
The honest comparison at this stroke is the MACJ16 (about 100 N at 0.5 MPa) if your load is lighter, or the MACJ25 (245 N) if you are near the top of bore 20's range. Keep in mind that the adjuster is an extend-stroke end stop, not a mid-stroke lock, so a suspended or falling load needs separate arrest. FA flange and LB foot mountings bolt straight on, I and Y knuckles suit swivelling links, and the standard magnet pairs with CMSG, DMSG or EMSG switches for end-of-travel signals on tight pitch machines.
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 MACJ20X20-10S FAQ
Measured on the effective areas: 157.0 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push and 184.7 N pull at 0.7 MPa; the theoretical maximum is 32.0 kgf at 1.0 MPa. Air supply should be filtered to 40 um and stay within 0.15-1.0 MPa (22-145 psi).
Small strokes often sit deep inside machines where access is poor, so a riveted stainless barrel with a hard-chrome rod keeps working despite splashes, swarf-laden air and occasional washdown. The variable cushions at both ends also matter at short stroke - they let you use the full 30-800 mm/s speed range without the piston ringing off the covers.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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