Airtac MICJ Adjustable Mini Cylinder MICJ40X300-75S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X300-75S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke300 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 MICJ40X300-75S
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ40X300-75S, a round-body stainless-steel mini cylinder built for double-acting operation. An external stop screw shortens the extend stroke by up to 75 mm on site, yielding a usable forward range of 225 to 300 mm, while a needle-set variable air cushion at both ends soaks up high-speed shock. The stainless barrel and rod resist mild corrosion and washdown environments.
The built-in -S piston magnet enables CMSG, DMSG, and EMSG position sensing, operating reliably at speeds between 30 and 800 mm/s.
Airtac MICJ Adjustable Mini Cylinder MICJ40X300-75S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X300-75S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MICJ40X300-75S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -75 | 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 MICJ40X300-75S Is Used
Heavy Diverter Gate
Shifts a robust routing gate on a packaging line, using the 75 mm extend adjustment to fine-tune the deflection angle without moving the bracketry, while the dual cushions absorb the impact of the 32 kg load at high speed.
Pallet Stopper Arm
Extends a stopper arm to halt incoming pallets on a roller conveyor, trimming the forward position by up to 75 mm to accommodate varying pallet depths while the stainless build handles dusty washdown zones.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X300-75S the Right Cylinder?
The 75 mm extend adjuster and dual cushions are ideal for fast, settable-position moves, but remember the stop screw only sets the end position—it is not a mid-stroke lock. The air cushion merely decelerates near the stroke end; it will not hold a load on air loss, so add an external rod lock or pilot check valve for vertical safety.
Mounting options include LB foot, FA flange, and TC trunnion brackets, plus CA, U, R, or CM back covers, but note the SDB pivot-block is not available on this adjustable variant. Position sensing is ready out of the box via the internal magnet for 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 MICJ40X300-75S FAQ
At 0.7 MPa, the push increases to 879.6 N and the pull to 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 75 mm on site, but it only sets the forward end position and does not lock the piston mid-stroke. The needle-set variable air cushion at both ends decelerates the load near the stroke ends to absorb high-speed shock, but it will not hold the load on air loss. The -S suffix means a built-in magnet is present 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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