Airtac MICJ Adjustable Mini Cylinder MICJ40X250-40
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X250-40 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 MICJ40X250-40
Dial in the forward stop without swapping cylinders: the AirTAC MICJ40X250-40 uses an external screw to shorten the extend end position by up to 40 mm on site, giving a usable forward range of 210-250 mm. This round-body stainless steel mini cylinder pairs that on-site adjustability with a needle-set variable air cushion at both ends to soak up high-speed shock.
The stainless barrel and rod resist mild corrosion and washdown environments. Because this SKU lacks the -S magnet option, it cannot accept CMSG, DMSG or EMSG sensors. It is a double-acting actuator operating at 30-800 mm/s, and the stop screw sets the end position but is not a mid-stroke lock.
Airtac MICJ Adjustable Mini Cylinder MICJ40X250-40 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X250-40 |
|---|---|
| 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 MICJ40X250-40
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -40 | 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 MICJ40X250-40 Is Used
Adjustable Press Stop
Trim the 250 mm extend stroke by up to 40 mm to set a precise lower press position, using the dual air cushions to absorb the impact of fast 628 N moves.
Heavy Pallet Lift
Vertically lift approximately 32 kg pallets in washdown zones; the stainless construction resists mild corrosion while the 1/4" port delivers the needed volume.
High-Speed Diverter
Divert heavier packages at up to 800 mm/s. The needle-set cushions soak up the end-of-stroke shock, protecting the 40 mm bore mechanism from premature wear.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X250-40 the Right Cylinder?
The adjustable extend stop plus dual air cushions shine in fast set-position moves where you must tune the impact deceleration on site.
For mounting, choose LB foot, FA flange or TC trunnion brackets, plus CA, U, R or CM back covers (the SDB pivot-block is not available on this adjustable-stroke build). Remember that a plain cylinder drifts on air loss: the cushion only decelerates near the stroke end and never acts as a brake. Use an external rod lock or pilot-operated 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 MICJ40X250-40 FAQ
This 40 mm bore cylinder features a 1/4" air port and a Ø16 mm rod.
An external screw shortens the extend stroke by up to 40 mm (retract remains full), while needle-set air cushions at both ends decelerate the piston near stroke ends. It does not hold position on air loss, so use an external rod lock for suspended loads. This SKU has no magnet and cannot take 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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