Airtac MICJ Adjustable Mini Cylinder MICJ40X250-100S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X250-100S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 250mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke250 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 MICJ40X250-100S
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ40X250-100S, a round-body stainless-steel mini cylinder that shortens the extend stroke by up to 100 mm on site.
A needle-set adjustable air cushion at both ends soaks up high-speed shock to protect your tooling, operating reliably at speeds from 30 to 800 mm/s. The stainless barrel and piston rod resist mild corrosion and washdown environments. Note that this Ø40 size is a non-ISO-6432 round-body design, and the external stop screw sets the end position but does not function as a mid-stroke lock.
Airtac MICJ Adjustable Mini Cylinder MICJ40X250-100S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X250-100S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MICJ40X250-100S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -100 | 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 MICJ40X250-100S Is Used
Heavy Carton Diversion
Pushes heavy cartons at high speed on a packaging line, using the 100 mm extend adjustment to dial in the exact push distance while the dual air cushions absorb the impact.
Pallet Stop Gate
Acts as an adjustable stop gate for heavy pallets, trimming the forward position on site without hardware changes and handling the load with a 377 N safe working margin.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X250-100S the Right Cylinder?
When sizing this 40 mm bore, moving down to a 32 mm bore drops the 0.5 MPa push force to 402.2 N, while no larger standard MICJ bore exists. The adjustable stop and dual air cushions are ideal for fast, settable-position moves, but remember the cylinder drifts on air loss—the cushion only decelerates near the stroke end and never acts as a brake. For a held load, install an external rod lock or pilot check valve.
Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot-block is not available on this adjustable-stroke variant. Because this SKU includes the -S magnet, you can directly mount CMSG, DMSG, or EMSG switches for reed or electronic sensing.
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 MICJ40X250-100S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 100 mm, while a needle-set adjustable air cushion at both ends decelerates the piston at high speed. The -S magnet enables CMSG/DMSG/EMSG sensors. The stop screw sets the end position but is not a mid-stroke lock; the cylinder will drift on air loss, so use an external rod lock for 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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