Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X30-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X30-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 30mm 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
- Stroke30 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 MACJ20X30-10S
Fine trim on a short throw: this double-acting MACJ carries a 30 mm stroke that the stop screw shortens by up to 10 mm on site, with a variable air cushion softening both ends of travel. The riveted stainless round barrel and hard-chrome plated rod take splashes, coolants and outdoor damp that would corrode an ordinary aluminium mini body. Running window: 0.15-1.0 MPa (22-145 psi), 30-800 mm/s, proof 1.5 MPa (215 psi).
Output at 0.5 MPa is 157 N forward - call it 94 N of practical force so the cylinder keeps reserve, enough to hoist around 8 kg vertically with margin to spare. Because the magnet is built in as standard, CMSG, DMSG or EMSG switches bolt on for end-of-stroke signalling. Remember the adjuster sets an extend-side stop; it is not a mid-stroke lock and the rod can coast if air pressure disappears.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X30-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X30-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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 MACJ20X30-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 MACJ20X30-10S Is Used
SMT feeder stopper
Nudges PCB magazines into the feeder latch, the 10 mm trim giving exact pocket alignment without shimming.
Reagent tray indexing
Advances a tray one slot in a lab analyzer; the stainless barrel wipes clean between washdown protocols.
Label head kick-off
Taps rejected packs off a labeling conveyor, with the end cushion tuned so labels are not bruised.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X30-10S the Right Cylinder?
MACJ16 tops out at 100.5 N push (0.5 MPa) and MACJ25 reaches 245.3 N - pick this 20 mm bore when the load sits between the two. Where repeatability matters, set the extend stop inside the 10 mm window rather than tuning cushions alone. FA and LB mountings plus I or Y knuckles cover most fixtures; PT, G and NPT ports are on offer. The stop positions the rod but will not arrest it when supply fails.
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 MACJ20X30-10S FAQ
At 0.5 MPa: 157 N push and 131.9 N pull. At 0.7 MPa: 219.8 N push and 184.7 N pull. Maximum theoretical force is 32 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s, with the extend stroke adjustable inside the 10 mm window.
Yes - the variable air cushion at each end is set by the cover adjust screws to suit speed and load, and the extend stroke is shortened by the external stop anywhere within the 10 mm window. The stop is a position setter only; it does not lock the rod when pressure is lost.
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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