Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø25mm bore and 300mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- 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 MICJ Adjustable Mini Cylinder MICJ25X300-20S
Tune the forward stop on site without swapping hardware using the AirTAC MICJ25X300-20S, a double-acting stainless-steel round-body mini cylinder. An external screw trims the extend end position by up to 20 mm (yielding a 280-300 mm usable forward stroke), while a needle-set variable air cushion at both ends absorbs high-speed impact. Retract remains a full 300 mm motion.
Built to the ISO 6432 mounting interface, this Ø25 mm bore drops into standard mini brackets and clevises. The stainless barrel and Ø10 mm rod resist mild corrosion and washdown environments. Delivering 245.3 N of push force at 0.5 MPa, it provides a safe working load of roughly 147 N, or a vertical lift of about 12.5 kg with a 2:1 margin. The -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG position sensing.
Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S Is Used
Variable Length Ejection
Dial in the exact 280-300 mm ejection reach on a packaging line to handle different carton depths without changing out the entire cylinder assembly.
High-Speed Transfer
Move 12.5 kg vertically with a 2:1 safety margin while the dual adjustable air cushions soak up end-of-stroke shock during rapid 30-800 mm/s transfers.
Washdown Sorting
Leverage the stainless steel barrel and rod for mildly corrosive washdown environments, using the -S magnet and DMSG sensors to confirm part diversion.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S the Right Cylinder?
When sizing this 25 mm bore, stepping down to the Ø20 model drops the 0.5 MPa push force to 157 N, whereas moving up to the Ø32 bore raises it to 402 N. Choose this Ø25 variant when you need moderate thrust combined with on-the-fly extend positioning and shock absorption at fast cycling speeds. The 1/8" port feeds the 30-800 mm/s speed range effectively.
The adjustable stop screw sets the forward end position but acts purely as a physical stop, not a mid-stroke lock. If the application must hold a load vertically during air loss or valve centering, the piston will drift; pair this cylinder with an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, and TC trunnion (the SDB pivot block is unavailable on this adjustable variant).
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
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 Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MICJ Adjustable Mini Cylinder MICJ25X300-20S FAQ
This Ø25 mm bore cylinder features a 1/8" air port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 20 mm, and the needle-set variable air cushion at both ends decelerates the piston near the stroke ends to absorb high-speed shock. The cushion only decelerates and the screw only sets the end stop; neither acts as a mid-stroke lock, so the piston will drift on air loss.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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