Airtac MICJ Adjustable Mini Cylinder MICJ40X30-30S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X30-30S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 30mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke30 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 MICJ40X30-30S
Shave up to 30 mm off the extend end on site with the AirTAC MICJ40X30-30S, a double-acting round-body mini cylinder that pairs an external stop screw with a needle-adjustable air cushion at both ends. You set the exact forward stop without swapping hardware, then dial in the cushion to soak up high-speed impact. The Ø40 mm bore runs on a 1/4" port and a Ø16 mm rod with an M12x1.25 male thread, pushing 628.3 N at 0.5 MPa. The stainless-steel barrel and rod shrug off mild corrosion and washdown.
This variant ships with a built-in magnet (-S) for CMSG, DMSG, or EMSG sensors. It operates at 30-800 mm/s and tolerates pressures up to 1.0 MPa, though the cushion only decelerates the piston near the stroke end—it will not lock or hold the load mid-travel.
Airtac MICJ Adjustable Mini Cylinder MICJ40X30-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X30-30S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MICJ40X30-30S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MICJ40X30-30S Is Used
Heavy Clamping
Drive a 32 kg fixture forward at speed, using the 30 mm extend adjustment to dial in the exact clamp position without machining spacers.
Carton Forming
Push thick corrugated blanks into place on a washdown line, relying on the stainless rod and barrel to resist moisture and cleaning chemicals.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X30-30S the Right Cylinder?
This Ø40 model is the right pick when you need to drive a heavy load quickly and fine-tune the landing. The external screw trims the extend stroke by up to 30 mm, while the dual air cushions prevent endcap slamming at high speeds. Because it lacks an SDB pivot block, use LB foot, FA flange, or TC trunnion mounts, plus CA, U, R, or CM back covers. The -S magnet enables position sensing with CMSG, DMSG, or EMSG switches. Remember that the stop screw sets the end position but does not act as a mid-stroke lock; if you need to hold a load vertically during air loss, install an external rod lock or pilot check valve.
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 MICJ40X30-30S FAQ
This double-acting cylinder uses a 1/4" port and a Ø16 mm rod. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm, and a needle valve adjusts the air cushion at both ends to decelerate the piston before impact. The -S suffix means it has a magnet for CMSG/DMSG/EMSG sensors. The cushion and stop screw do not lock the piston; for vertical load holding on air loss, use an external rod lock or pilot check valve.
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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