Airtac MICJ Adjustable Mini Cylinder MICJ40X75-20S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X75-20S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 75mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke75 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 MICJ40X75-20S
Trimming the forward stop by up to 20 mm on-site, this double-acting round-body mini cylinder lets you dial in a 55-75 mm extend position without swapping hardware. An adjustable air cushion at both ends absorbs high-speed shock, while the stainless barrel and rod resist mild corrosion and washdown environments.
Because the built-in magnet (-S) is present, you can mount CMSG, DMSG, or EMSG sensors for position detection. The needle cushion only decelerates the piston near the stroke end; it does not lock the load.
Airtac MICJ Adjustable Mini Cylinder MICJ40X75-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X75-20S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MICJ40X75-20S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MICJ40X75-20S Is Used
Heavy Clamping Press
Dial in the 55-75 mm extend stop to clamp 32 kg assemblies securely, relying on the adjustable air cushion to prevent impact damage at high cycling speeds.
Carton Forming Stop
Set the exact end position for folding large packaging flaps, letting the needle cushion absorb the shock of rapid 800 mm/s movements.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X75-20S the Right Cylinder?
As the largest standard round-body mini cylinder in the series, there is no larger bore available. The external stop screw and dual adjustable cushions excel in fast set-position moves where you must tune the impact.
Mount using LB foot, FA flange, or TC trunnion brackets, noting that the SDB pivot-block is not available on this adjustable variant. Remember that the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss. Use an external rod lock or pilot check valve if you need to hold a suspended load.
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 MICJ40X75-20S FAQ
This Ø40 mm bore cylinder features a 1/4" port and an M12x1.25 male rod thread.
An external screw shortens the extend stroke by up to 20 mm on-site, while a needle valve adjusts the air cushion at both ends to soak up high-speed shock. The -S suffix means it has a magnet for CMSG/DMSG/EMSG sensors. The cushion only decelerates the piston; it does not lock the load, so the rod will drift on air loss.
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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