Airtac MICJ Adjustable Mini Cylinder MICJ20X300-40
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ20X300-40 is a genuine double acting, adjustable stroke + cushion round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke300 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 MICJ20X300-40
Dial in a precise forward stop on site with the AirTAC MICJ20X300-40, a stainless-steel round-body mini cylinder that shortens the extend stroke by up to 40 mm via an external screw. The 300 mm nominal extend retracts fully, while a needle-adjustable air cushion at both ends soaks up high-speed shock for smooth deceleration.
Built with a 20 mm bore and 1/8" port, it delivers 157 N of push force at 0.5 MPa, making its 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 washdown. This SKU lacks a magnet and cannot take sensors; adding the -S variant enables CMSG, DMSG, or EMSG switches.
Airtac MICJ Adjustable Mini Cylinder MICJ20X300-40 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ20X300-40 |
|---|---|
| Series | MICJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MICJ20X300-40
| MICJ | ISO 6432 round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -40 | 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 MICJ20X300-40 Is Used
Adjustable Diverting Gate
Trim the extend stroke up to 40 mm to position a diverting flap exactly over a conveyor lane, using the 157 N push force to move light aluminum gates reliably.
High-Speed Product Stopper
Use the adjustable air cushion to decelerate the 300 mm stroke smoothly at high cycling speeds, preventing impact damage when halting small cartons on a line.
Washdown Pin Insertion
Leverage the stainless steel construction for mildly corrosive environments, pressing lightweight pins with a safe working load of about 94 N without swapping cylinders for depth tweaks.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ20X300-40 the Right Cylinder?
For lighter moves, the 16 mm bore offers 100.5 N push at 0.5 MPa, while heavier setups can step up to the 25 mm bore with 245.3 N. This 20 mm bore fits ISO 6432 mini-cylinder mounting interfaces using LB foot, FA flange, or TC trunnion brackets, but the SDB pivot-block is not available on this adjustable variant. The external screw sets the forward end position but does not lock mid-stroke; the piston drifts on air loss, so add an external rod lock or pilot check valve for held loads.
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 MICJ20X300-40 FAQ
This 20 mm bore cylinder features 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 40 mm on site, while needle valves tune the air cushion at both ends to absorb high-speed shock. The cushion only decelerates near stroke end and does not lock the piston; on air loss the cylinder drifts, so use an external rod lock for holding. This non-S SKU cannot take magnetic 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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