Airtac MICJ Adjustable Mini Cylinder MICJ40X15-20S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X15-20S is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 15mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke15 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 MICJ40X15-20S
Dial in a precise forward stop on-site with the AirTAC MICJ40X15-20S, a round-body stainless steel mini cylinder that shortens the extend end position by up to 20 mm via an external screw. Built for rapid motion, it pairs this settable stroke with an adjustable air cushion at both ends to soak up high-speed shock without metal-on-metal impact. The retract stroke remains full length, and the unit operates as a standard double-acting actuator.
The stainless barrel and rod resist mild corrosion and washdown environments. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position switches. Note that Ø40 is a non-ISO-6432 size, and the 1/4" port feeds the larger 16 mm piston rod.
Airtac MICJ Adjustable Mini Cylinder MICJ40X15-20S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X15-20S |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MICJ40X15-20S
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MICJ40X15-20S Is Used
Heavy Diverter Gate
Shifts a robust routing gate on a packaging line, using the 20 mm extend adjuster to fine-tune the diversion angle and the dual air cushions to absorb the impact of fast 32 kg loads.
Pallet Stopper Arm
Deploys a heavy stop arm to halt incoming pallets, using the adjustable needle cushion to decelerate the strike safely without needing an external shock absorber.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X15-20S the Right Cylinder?
The adjustable extend stop and dual needle cushions shine in fast set-position moves where you must tune the forward end point and decelerate a heavy load smoothly. Remember that the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss, so specify an external rod lock or pilot check valve if you must hold a suspended load.
Mounting choices include LB foot, FA flange, and TC trunnion styles, plus CA, U, R, or CM back covers. The SDB pivot block is not available on this adjustable-stroke variant. Use the built-in -S magnet with CMSG, DMSG, or EMSG sensors for precise end-of-stroke confirmation.
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 MICJ40X15-20S FAQ
This double-acting cylinder uses a 1/4" air port and a 16 mm rod. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 20 mm so you can set the exact forward end position without moving the cylinder. The adjustable air cushion at both ends decelerates the piston near the stroke ends to reduce shock; it is not a mid-stroke lock or brake. The -S magnet allows CMSG, DMSG, and EMSG sensors to track position.
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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