Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MACJ20X25-10S
Need a 15-25 mm working throw you can tune on the machine? The MACJ20X25-10S runs double-acting on air with an adjustable extend stroke: the stop screw shortens travel anywhere within the ordered 10 mm window, and a variable air cushion at each end tames end-of-stroke bang even at the full 30-800 mm/s speed range. Push force is 157 N at 0.5 MPa.
Its stainless tube and hard-chrome plated rod resist the splash and condensation that rust painted mini cylinders, while the built-in magnet (standard, not an option) lets CMSG, DMSG or EMSG switches report position with no special piston order. For a 2:1 lift margin, count on raising roughly 8 kg vertically, since the bore generates about 16 kgf at 0.5 MPa before derating.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MACJ20X25-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MACJ20X25-10S Is Used
Ejecting finished parts from a small punch die
A 25 mm throw clears the nest, and trimming down to 15 mm keeps thin shims from being knocked off the stack.
Connector latch press on PCB assembly fixtures
157 N at 0.5 MPa seats latches without over-driving them, and the cushion softens the final millimetres of travel.
Presence confirm pusher on a bottle filling line
The magnet plus a CMSG switch verifies each bottle reached the stop, and the stainless body rinses off during washdown shifts.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X25-10S the Right Cylinder?
At 157 N push at 0.5 MPa this bore sits between the 16 mm size (100.5 N) and the 25 mm size (245.3 N); drop to 16 mm for lighter latches, go 25 mm if the load pushes back harder. Remember the trim screw is an extend-stroke stop only - it will not hold a load if air pressure is lost, and it never adds travel beyond 25 mm. FA flange or LB foot mounting, with I and Y rod knuckles available; the adjustable series omits the SDB option.
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 MACJ20X25-10S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa push rises to 219.8 N and pull to 184.7 N; the theoretical ceiling is 32 kgf at 1.0 MPa. The cylinder is double-acting with adjustable stroke, runs on 0.15-1.0 MPa (22-145 psi) air, and connects through a 1/8" port on this 20 mm bore.
Yes. The stop screw adjusts the extend stroke inside the 10 mm window, and because the magnet ships as standard, DMSG or EMSG switches can sit along the stainless barrel for end-of-travel or mid-window signals without modifying the cylinder.
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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.
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Most inquiries answered within 7-8 hours.
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