Airtac MICJ Adjustable Mini Cylinder MICJ40X450-20
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X450-20 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke450 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 MICJ40X450-20
Trim the forward stop by up to 20 mm on site without swapping hardware using this stainless round-body mini cylinder. The external screw shortens the extend end position (usable forward travel 430-450 mm), while a needle-set adjustable air cushion at both ends soaks up high-speed shock. This double-acting 40 mm bore unit pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa.
Built with a stainless steel barrel and Ø16 mm rod for mild washdown resistance, it runs on a 1/4" port at 30-800 mm/s. Because this SKU lacks a magnet, it cannot take position sensors; order the -S variant to enable CMSG, DMSG or EMSG switches.
Airtac MICJ Adjustable Mini Cylinder MICJ40X450-20 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X450-20 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 MICJ40X450-20
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 MICJ40X450-20 Is Used
Heavy Carton Diversion
Pushes loaded pallets or heavy cartons at speed on a conveyor, using the 20 mm extend trim to dial in the exact push-off distance while the dual air cushion absorbs the impact at the end of the 450 mm stroke.
Pallet Stop Gate
Acts as a robust stop gate for heavy pallets entering a wrapping station, using the needle-set cushion to decelerate the load smoothly without slamming the cylinder body.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X450-20 the Right Cylinder?
There is no larger bore in the MICJ family, making this the top choice for heavy mini-cylinder tasks. The adjustable stop plus dual air cushion is ideal when you need fast set-position moves with controlled deceleration at the extremes.
Remember that the stop screw only sets the extend end position—it is not a mid-stroke lock. The piston will drift on air loss, so fit an external rod lock or pilot check valve for held loads. Mount via LB foot, FA flange or TC trunnion (SDB pivot-block is not offered), and note again that this non-magnetic version cannot accept sensors.
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 MICJ40X450-20 FAQ
This 40 mm bore cylinder uses a 1/4" port. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the 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 end position by up to 20 mm (retract remains full stroke), and a needle valve adjusts the air cushion at both ends to absorb high-speed shock. The cushion only decelerates near stroke end—it is not a lock. This non-magnetic SKU cannot take sensors; use the -S version for CMSG/DMSG/EMSG switches.
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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