Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X40-30 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 MICJ40X40-30
Dial in the forward stop on-site without swapping cylinders: the AirTAC MICJ40X40-30 uses an external screw to shorten the extend stroke by up to 30 mm, giving a usable forward travel of 10 to 40 mm. This round-body stainless-steel mini cylinder pairs that settable end-position with a needle-adjustable air cushion at both ends, soaking up high-speed shock to deliver smooth deceleration near the stroke end.
The stainless barrel and rod resist mild corrosion and washdown. Note this base SKU lacks a magnet and cannot accept CMSG/DMSG/EMSG sensors; specify the -S variant if you need position detection.
Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30 |
|---|---|
| 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 MICJ40X40-30
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30 Is Used
Carton Flap Folder
Handles rigid packaging flaps at speed, relying on the needle-set air cushions at both ends to decelerate the 40 mm stroke smoothly without slamming.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30 the Right Cylinder?
Size both ways for your force requirements. If 628.3 N at 0.5 MPa is excessive, the next bore down (Ø32) provides 402.2 N; there is no larger standard MICJ bore above Ø40. This Ø40 model is ideal when you need high thrust combined with a fast, settable forward position, as the adjustable stop screw and dual air cushions manage rapid moves without harsh impacts. The stop screw sets the end position but is not a mid-stroke lock. Because a plain cylinder drifts on air loss, add an external rod lock or pilot check valve to hold a suspended load. Mount using LB foot, FA flange, or TC trunnion (SDB pivot-block is not available on this adjustable-stroke build).
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 MICJ40X40-30 FAQ
This 40 mm bore cylinder uses a 1/4" port. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm (usable extend 10-40 mm); retract remains full. Needle valves adjust the air cushion at both ends to decelerate high-speed moves. The cushion only slows the piston near the end of travel and the stop screw sets the end position, but neither acts as a mid-stroke lock. The piston will drift on air loss, so use an external rod lock for holding. This non-S SKU has no magnet for 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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