Airtac MICJ Adjustable Mini Cylinder MICJ40X350-30S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X350-30S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 350mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke350 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 MICJ40X350-30S
Shave up to 30 mm off the forward end position on-site with the AirTAC MICJ40X350-30S, a double-acting round-body mini cylinder built from stainless steel. A needle-set variable air cushion at both ends soaks up high-speed shock, letting you dial in the exact forward stop and control the impact without swapping hardware. The retract stroke remains full, while the external screw adjusts the extend end only.
Driven by a 1/4" port and a Ø16 mm rod with an M12x1.25 male thread, this Ø40 mm non-ISO-6432 unit pushes 628.3 N and pulls 527.8 N at 0.5 MPa. The stainless barrel and rod resist mild corrosion and washdown environments. With a built-in magnet (-S), it supports CMSG, DMSG, and EMSG sensors for position detection.
Airtac MICJ Adjustable Mini Cylinder MICJ40X350-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X350-30S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MICJ40X350-30S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MICJ40X350-30S Is Used
Vertical Lift Gate
Raising a 30 kg access gate using the full extend stroke, with the 30 mm external stop screw available to fine-tune the exact opening height on-site.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X350-30S the Right Cylinder?
If you need more force than the 628.3 N provided here, note that Ø40 is the largest available MICJ size, so an external rod lock or larger fixed-stroke series would be required. The adjustable 30 mm extend stop plus dual air cushions shine in fast set-position moves where you must absorb end-of-stroke shock. Mount using LB foot, FA flange, or TC trunnion brackets, as the SDB pivot-block is not offered on this adjustable variant. Position holding is not inherent; the piston will drift on air loss, so add a pilot-operated check valve if you need to maintain a vertical load.
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 MICJ40X350-30S FAQ
This double-acting Ø40 mm cylinder uses a 1/4" air 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, while a needle valve adjusts the variable air cushion at both ends to decelerate the piston before impact. The -S suffix means a magnet is built in for CMSG/DMSG/EMSG sensors. The cylinder does not hold position on air loss and will drift; use an external rod lock or pilot check valve for load holding.
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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