Airtac MICJ Adjustable Mini Cylinder MICJ40X25-20S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X25-20S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke25 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 MICJ40X25-20S
Dial in a precise forward stop on-site with the AirTAC MICJ40X25-20S, a round-body stainless-steel mini cylinder featuring an adjustable extend stroke and an adjustable air cushion at both ends. An external screw trims the extend end position by up to 20 mm, letting you set the exact forward stop without swapping hardware, while the needle valves soak up high-speed shock.
The stainless barrel and rod resist mild corrosion and washdown environments. Because this is a 40 mm bore, it is a non-ISO-6432 round-body design built for heavier duty. The integrated -S magnet supports CMSG, DMSG, and EMSG sensors for position tracking.
Airtac MICJ Adjustable Mini Cylinder MICJ40X25-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X25-20S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 MICJ40X25-20S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MICJ40X25-20S Is Used
Heavy Diverter Gate
Shifts a heavy routing gate on a packaging line. The 20 mm extend stop sets the exact deflection angle, while the air cushion absorbs the impact of the 32 kg load at high speed.
Press Pin Insertion
Drives a pin into an assembly housing.
Pallet Stopper Arm
Deploys a stop arm to halt incoming pallets. The needle cushion decelerates the 40 mm bore smoothly at the end of travel, preventing bounce when the load hits the stop.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X25-20S the Right Cylinder?
Since 40 mm is the largest available bore in this series, there is no larger MICJ size to step up to if your load requires more force. The adjustable extend stop paired with the dual air cushions is ideal for fast, settable-position moves that need controlled deceleration to prevent end-of-stroke impact.
For mounting, you can use LB foot, FA flange, or TC trunnion brackets, but note that the SDB pivot-block is not available on this adjustable-stroke variant. The stop screw sets the 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. The -S magnet enables CMSG, DMSG, and EMSG switches for exact position feedback.
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 MICJ40X25-20S FAQ
At 0.7 MPa, the push force is 879.6 N and the pull force is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 20 mm, letting you set the forward end position on-site; retract remains full. Needle valves provide an adjustable air cushion at both ends to decelerate high-speed moves. The -S magnet allows CMSG, DMSG, and EMSG sensors for position detection, and the stainless construction resists mild corrosion.
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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