Airtac MICJ Adjustable Mini Cylinder MICJ40X400-50S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X400-50S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke400 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 MICJ40X400-50S
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ40X400-50S. This round-body stainless-steel mini cylinder features an external screw that shortens the extend stroke by up to 50 mm on-site, giving you a usable forward range of 350-400 mm while retract remains full. A needle-set adjustable air cushion at both ends soaks up high-speed shock, letting you set the position and control the impact simultaneously.
The stainless barrel and rod resist mild corrosion and washdown environments. Because this is a -S model, the built-in piston magnet supports CMSG, DMSG, and EMSG sensors. Note that the 1/4" port and larger diameter mean this is a non-ISO-6432 round-body unit.
Airtac MICJ Adjustable Mini Cylinder MICJ40X400-50S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X400-50S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MICJ40X400-50S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -50 | 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 MICJ40X400-50S Is Used
High-Speed Divertor
Handles robust diverting tasks on a packaging line, relying on the adjustable air cushions to absorb shock during rapid 400 mm strokes and prevent end-cap wear.
Vertical Lifting Gate
Lifts materials up to 32 kg safely, using the built-in magnet and EMSG sensor to confirm gate position while the external stop screw sets the precise open height.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X400-50S the Right Cylinder?
The combination of a 50 mm extend trim and dual air cushions is ideal for fast, repeatable set-position moves where you must tune out end-of-stroke impact.
Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot-block is not available on this adjustable-stroke variant. The stop screw sets the forward end position but is not a mid-stroke lock; the cylinder will drift on air loss, so add an external rod lock or pilot check valve if you need to hold a suspended 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 MICJ40X400-50S FAQ
This 40 mm bore cylinder uses a 1/4" port and a 16 mm rod.
An external screw shortens the extend stroke by up to 50 mm on-site, giving a usable range of 350-400 mm, while retract remains full. Needle-set adjustable air cushions at both ends decelerate the piston near stroke ends to absorb shock. The -S suffix means it has a built-in magnet 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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