Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X80-40S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke80 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 MICJ40X80-40S
Dial in a precise forward stop on-site with the AirTAC MICJ40X80-40S, a round-body stainless steel mini cylinder that shortens the extend stroke by up to 40 mm via an external screw. The usable extend range becomes 40 to 80 mm, while retract remains full. An adjustable air cushion at both ends soaks up high-speed shock, letting you set the position and control the impact simultaneously.
Built with a stainless barrel and rod for mild washdown resistance, this double-acting Ø40 mm unit pushes with 628.3 N at 0.5 MPa. It features a 1/4" port, an M12x1.25 male rod thread, and a built-in magnet (-S) for CMSG, DMSG, or EMSG sensors.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MICJ40X80-40S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MICJ40X80-40S Is Used
Package Diverting
Handles 32 kg cartons on a sorting line, using the 40 mm extend trim to dial in the exact pusher distance without swapping hardware.
Pallet Stops
Halts loaded pallets on a conveyor, adjusting the stop screw on-site to accommodate varying pallet depths while absorbing kinetic energy.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-40S the Right Cylinder?
For lighter push needs, the smaller Ø32 bore delivers 402.2 N at 0.5 MPa; if you need more force, there is no larger MICJ bore. This Ø40 model is ideal when you need fast, settable-position moves and want to tune out end-of-stroke shock. The external screw sets the forward end position but is not a mid-stroke lock.
Because a plain cylinder drifts on air loss, add an external rod lock or pilot check valve to hold a suspended load. Mount using LB foot, FA flange, or TC trunnion (SDB is unavailable on this variant). Choose CMSG, DMSG, or EMSG switches to leverage the included -S magnet.
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 MICJ40X80-40S FAQ
This double-acting cylinder has a 1/4" port and an M12x1.25 male rod thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 40 mm, giving a usable forward range of 40-80 mm; retract is always full. Needle-set air cushions at both ends decelerate the piston near stroke end to absorb shock. The cushion only decelerates and is not a brake; the piston will drift on air loss, so use an external rod lock to hold a load. The -S magnet enables CMSG, DMSG, and EMSG 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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