Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X40-30S 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 MICJ40X40-30S
Trim the forward stop by up to 30 mm on site without swapping cylinders, and let the needle-set air cushions soak up high-speed shock at both ends. The MICJ40X40-30S is a double-acting, round-body stainless-steel mini cylinder built for exact positioning and heavy miniature loads. The external screw shortens the extend end only, while retract remains full. A built-in magnet (-S) enables CMSG, DMSG and EMSG sensors for precise end-of-stroke detection.
The stainless barrel and rod resist mild corrosion and washdown environments. It features a 1/4" port, a Ø16 mm piston rod, and an M12x1.25 male rod thread, operating at speeds from 30 to 800 mm/s.
Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30S |
|---|---|
| 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 MICJ40X40-30S
| 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 MICJ40X40-30S Is Used
Pallet Stopper Gate
Halt incoming pallets weighing up to 32 kg on a vertical lift, using the adjustable forward stop to tune the gate position precisely on site.
Vertical Lift Gate
Raise and lower material handling gates in washdown zones, benefiting from the stainless construction and dual air cushions for fast 800 mm/s cycling.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X40-30S the Right Cylinder?
As the largest bore, the MICJ40 delivers maximum miniature force with no larger MICJ size available. The adjustable extend stop and dual air cushions are ideal for fast, repetitive moves where you must dial in a specific forward position and control impact shock without custom machining.
This cylinder does not hold position on air loss; the piston drifts, and the cushion only decelerates near the end of the stroke. For suspended loads, install an external rod lock or pilot check valve. Mount using LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers. 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 switches.
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 MICJ40X40-30S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread.
An external screw shortens the extend stroke by up to 30 mm on site, giving a usable extend range of 10 to 40 mm, while retract remains full. Needle-set air cushions at both ends decelerate the piston near stroke ends to absorb high-speed shock. The cylinder does not hold position on air loss; use an external rod lock or pilot check valve for suspended loads.
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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