Airtac MICJ Adjustable Mini Cylinder MICJ40X400-40
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X400-40 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 MICJ40X400-40
Dial in a precise forward stop without swapping hardware using the AirTAC MICJ40X400-40, a double-acting round-body mini cylinder built from stainless steel for mild washdown resistance. An external stop screw shortens the extend end position by up to 40 mm on site, yielding a usable forward range of 360-400 mm, while a needle-set variable air cushion at both ends soaks up high-speed shock. This Ø40 bore delivers substantial power, pushing with 628.3 N at 0.5 MPa.
Note that this SKU lacks a magnet and cannot host CMSG, DMSG, or EMSG sensors; order the -S variant if position feedback is required. Furthermore, the stop screw and cushions only decelerate near stroke end—they do not lock the piston mid-cycle or hold the load on air loss.
Airtac MICJ Adjustable Mini Cylinder MICJ40X400-40 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X400-40 |
|---|---|
| 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 MICJ40X400-40
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 MICJ40X400-40 Is Used
Pallet Stopping
Halt 30 kg loaded pallets on a belt line; the dual adjustable air cushions absorb the high-speed impact without slamming.
Vertical Lift Gates
Raise and lower access gates weighing up to 32 kg, relying on the external screw to fine-tune the open position precisely.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X400-40 the Right Cylinder?
This MICJ40X400-40 is ideal when you need to set exact extend positions rapidly and manage heavy kinetic energy, utilizing the adjustable forward stop and dual air cushions to control impact at speeds up to 800 mm/s.
Mount using LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers, noting that the SDB pivot-block is unavailable on this adjustable-stroke variant. Because a standard cylinder drifts when air pressure drops, integrate an external rod lock or pilot-operated check valve if your application requires strict load holding.
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 MICJ40X400-40 FAQ
This Ø40 mm cylinder features a 1/4" port and an M12x1.25 male rod thread.
An external screw shortens the extend stroke by up to 40 mm on site, allowing you to set the exact forward end position without changing the cylinder. The needle-set variable air cushions at both ends decelerate the piston near the stroke ends to absorb high-speed shock. This SKU has no magnet and cannot take sensors; the -S variant is required for CMSG, DMSG, or 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.
Related AirTAC MICJ Cylinders
Request a Quote for Airtac MICJ Adjustable Mini Cylinder MICJ40X400-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.