Airtac MICJ Adjustable Mini Cylinder MICJ40X350-20S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X350-20S 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 MICJ40X350-20S
Dial in a precise forward stop on-site with the AirTAC MICJ40X350-20S, a stainless-steel round-body mini cylinder featuring a 20 mm adjustable extend stroke. An external stop screw lets you trim the forward end position from 330 to 350 mm without swapping hardware, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. The -S suffix equips this unit with a built-in piston magnet for CMSG, DMSG, or EMSG position switches.
The stainless barrel and rod resist mild corrosion and washdown environments. It uses a 1/4" port and M12x1.25 male rod thread, operating at speeds from 30 to 800 mm/s.
Airtac MICJ Adjustable Mini Cylinder MICJ40X350-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X350-20S |
|---|---|
| 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 MICJ40X350-20S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -20 | 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 MICJ40X350-20S Is Used
Heavy Carton Diverting
Pushes heavy cartons at high speed on a packaging line, using the 20 mm extend adjustment to dial in the exact push distance while the air cushion absorbs the stopping shock of the 32 kg load.
Pallet Stopper Gate
Acts as a high-force stop gate on a roller conveyor, tuning the extend stroke to match pallet width variations and using the dual air cushions to decelerate the impact safely.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X350-20S the Right Cylinder?
Choose this model when you need high force combined with on-site stroke tuning to hit an exact target without machining spacers. The adjustable air cushion is essential for controlling the impact of heavy loads moving at high speed.
Remember that the stop screw sets the extend end position only; it is not a mid-stroke lock. A plain cylinder does not hold its load on air loss, so add an external rod lock or pilot-operated check valve if you need to prevent drift. Mount via LB foot, FA flange, or TC trunnion, noting that the SDB pivot-block is not available on this adjustable variant. Position sensing requires the included -S magnet.
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 MICJ40X350-20S FAQ
At 0.7 MPa, push is 879.6 N and pull is 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 20 mm, letting you set the forward end position on-site. The needle-set adjustable air cushion at both ends decelerates the piston near stroke ends to absorb high-speed shock. The cushion only decelerates; it does not lock or hold position. The -S magnet enables CMSG, DMSG, and EMSG sensors for end-of-stroke detection.
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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