Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50
The AirTAC Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50 is a genuine double acting, 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, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50
Dial in exact forward stops on-site with the AirTAC MICJ40X80-50, a round-body stainless steel mini cylinder featuring a 50 mm extend adjustment window. An external stop screw trims the forward end position from 30 to 80 mm, while a needle-set variable air cushion at both ends soaks up high-speed shock. This double-acting actuator uses a 1/4 inch port and a 16 mm rod to deliver 628.3 N of push force at 0.5 MPa.
The stainless barrel and rod resist mild corrosion and washdown environments. It provides a safe working load of about 377 N, capable of vertically lifting around 32 kg with a 2:1 margin. Note this SKU lacks a magnet and cannot accept CMSG, DMSG, or EMSG sensors; the -S variant is required for position sensing.
Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Double acting, 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -50 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50 Is Used
Heavy Diverter Gate
Shifts a weighted routing gate on a packaging line, using the 50 mm extend stop to dial in the exact open angle without machining spacers.
Press Fit Station
Pushes a 30 kg bearing housing into a housing at speed, relying on the dual air cushions to prevent end-of-stroke impact.
Pallet Stopper Arm
Deploys a heavy stop arm to halt pallets on a roller conveyor, trimming the extend position to match varying pallet depths.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X80-50 the Right Cylinder?
For lighter loads, the Ø32 bore yields 402.2 N push at 0.5 MPa, whereas this Ø40 model provides 628.3 N. As the largest available bore, there is no larger MICJ size to step up to. The 50 mm extend stop screw and dual air cushions are ideal for fast, settable-position moves, but remember the screw only sets the end position—it is not a mid-stroke lock.
This cylinder drifts on air loss because the cushion only decelerates near the stroke end. Install an external rod lock or pilot-operated check valve for held loads. Mount using LB foot, FA flange, or TC trunnion brackets, as the SDB pivot block is not offered on adjustable-stroke variants.
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 MICJ40X80-50 FAQ
This double-acting cylinder uses a 1/4 inch port and delivers 628.3 N push and 527.8 N pull at 0.5 MPa. At 0.7 MPa, 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 stroke by up to 50 mm on-site, and needle valves adjust the air cushions at both ends to absorb high-speed shock. This SKU has no magnet for sensors. The cylinder drifts on air loss, so use an external rod lock for holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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