Airtac MICJ Adjustable Mini Cylinder MICJ20X250-20S
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X250-20S 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 MICJ20X250-20S
Dial in a precise forward stop without swapping hardware using this stainless-steel round-body mini cylinder. The external screw trims the extend stroke by up to 20 mm, giving a usable 230-250 mm forward range, while the needle-set air cushion at both ends absorbs high-speed impact. It operates at 30-800 mm/s and features a built-in magnet for position sensing.
Built to the ISO 6432 mounting interface, the Ø20 bore uses an M8x1.25 male rod thread and a 1/8" port. It delivers 157 N of push force at 0.5 MPa, making the safe working load roughly 94 N or about 8 kg of vertical lift with a 2:1 margin. The stainless barrel and rod resist mild corrosion, and the -S magnet supports CMSG, DMSG, and EMSG switches.
Airtac MICJ Adjustable Mini Cylinder MICJ20X250-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X250-20S |
|---|---|
| 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 MICJ20X250-20S
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | 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 MICJ20X250-20S Is Used
Sorter Diverter Stop
Trim the 20 mm extend stop to perfectly position a package stopper arm on a conveyor, letting the air cushion absorb the impact of fast-moving items.
Carton Flap Tucker
Securely tuck flaps on a packaging line using the 157 N push force, fine-tuning the extend end to accommodate varying box widths without changing cylinders.
Light Press Assembly
Press small bearings or pins with an 8 kg vertical lift capacity, using the adjustable forward position to dial in precise downward travel limits.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ20X250-20S the Right Cylinder?
For lighter tasks, the Ø16 bore yields 100.5 N push at 0.5 MPa; if you need more power, stepping up to the Ø25 bore provides 245.3 N. This Ø20 model fits perfectly in the middle, giving 157 N push and 131.9 N pull at 0.5 MPa. The adjustable stop screw is ideal for fast set-position moves, but remember it only sets the end position—it is not a mid-stroke lock. The piston will drift on air loss, so use an external rod lock or pilot check valve for held loads.
You can mount this cylinder using LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers. Note that the SDB pivot-block is not available on this adjustable variant. Because this SKU includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG sensors for reed or electronic switching.
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 MICJ20X250-20S FAQ
This double-acting cylinder uses a 1/8" port and an M8x1.25 male rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
An external screw shortens the extend end position by up to 20 mm on-site, while the retract stroke remains full. Needle valves adjust the air cushion at both ends to decelerate the piston near the ends, reducing shock at high speeds. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors.
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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