Airtac MICJ Adjustable Mini Cylinder MICJ20X250-30S
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X250-30S is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm bore and 250mm 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.
- BoreØ20 mm
- Stroke250 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 MICJ Adjustable Mini Cylinder MICJ20X250-30S
Dial in a precise forward stop on-site with the AirTAC MICJ20X250-30S, a double-acting stainless-steel round-body mini cylinder. An external screw shortens the extend end position by up to 30 mm, giving a usable forward range of 220-250 mm without swapping hardware. Needle-set air cushions at both ends soak up high-speed shock, letting you set the position and control the impact simultaneously.
Built to the ISO 6432 mounting interface, this Ø20 bore drops into standard mini brackets and delivers 157 N of push force at 0.5 MPa. The stainless barrel and rod resist mild corrosion and washdown environments. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG or EMSG position switches. It uses a 1/8" port and an M8x1.25 male rod thread.
Airtac MICJ Adjustable Mini Cylinder MICJ20X250-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X250-30S |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 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 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 (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 MICJ Adjustable Mini Cylinder MICJ20X250-30S
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -30 | 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 MICJ20X250-30S Is Used
Diverter Gate Actuation
Trims the 250 mm extend stroke by 30 mm to hit a diverter flap perfectly, while the dual air cushions absorb shock from 800 mm/s high-speed sorting runs.
Carton Flap Folding
Provides 157 N of push to fold light cardboard flaps. The built-in -S magnet works with DMSG sensors to confirm flap position in washdown-resistant stainless builds.
Light Part Ejection
Ejects 8 kg parts vertically using the 0.5 MPa push force. The adjustable forward stop prevents over-travel, tuning the ejection distance without changing mounts.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ20X250-30S the Right Cylinder?
For lighter tasks, the Ø16 bore outputs 100.5 N push at 0.5 MPa, while stepping up to the Ø25 bore yields 245.3 N if you need more muscle. The Ø20 hits a sweet spot: its 157 N push translates to a safe working load of about 94 N, or a vertical lift of roughly 8 kg with a 2:1 safety margin. The 30 mm extend adjuster and dual air cushions excel in fast, settable-position moves.
Remember that the stop screw sets only the end position and the cushions merely decelerate; neither acts as a mid-stroke lock. The piston will drift on air loss, so fit an external rod lock or pilot check valve to hold a suspended load. You can use LB foot, FA flange or TC trunnion mounts, but the SDB pivot-block is not offered 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 MICJ20X250-30S FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. This Ø20 bore cylinder uses a 1/8" air port and an Ø8 mm piston rod with an M8x1.25 male thread.
An external stop screw shortens the extend stroke by up to 30 mm (usable range 220-250 mm); retract remains full. Needle valves adjust the air cushions at both ends to decelerate the piston before impact. The -S suffix means a piston magnet is built-in for CMSG, DMSG or EMSG sensors. The stop screw is an end-position adjuster, not a mid-stroke lock.
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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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