Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X40-20S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM12×1.25
- 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 MICJ40X40-20S
Dial in the forward stop on-site without swapping cylinders: the AirTAC MICJ40X40-20S uses an external screw to shorten the extend end position by up to 20 mm, giving a usable forward range of 20-40 mm. Retract remains full, and the double-acting stainless steel round-body construction resists mild corrosion and washdown environments.
This Ø40 mm round-body mini cylinder pairs that settable stroke with an adjustable air cushion at both ends to soak up high-speed shock. The built-in magnet (-S) supports CMSG, DMSG and EMSG sensors, and the 1/4" port handles the air volume needed for its 30-800 mm/s speed range.
Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
MIJ / MICJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S Is Used
Pallet Stopper Adjustment
Act as an adjustable pallet stop where the dual air cushions absorb the shock of fast incoming loads and the external screw fine-tunes the contact position.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X40-20S the Right Cylinder?
Choose this model when you need fast set-position moves where the 20 mm extend trim and dual needle cushions prevent end-impact. Note that the stop screw sets the end position but is not a mid-stroke lock; the cylinder drifts on air loss, so add an external rod lock or pilot check valve to hold a suspended load.
Mounting uses LB foot, FA flange or TC trunnion (SDB pivot-block is not available on this adjustable variant). Back covers include CA, U, R and CM. Because this SKU includes the -S magnet, you can fit CMSG, DMSG or EMSG switches for position sensing.
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 MICJ40X40-20S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical max force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" port.
An external screw shortens the extend stroke by up to 20 mm on-site, while the retract stroke remains full. Needle-set adjustable air cushions at both ends decelerate the piston near the ends to absorb high-speed shock. This SKU includes a magnet (-S) 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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