Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X300-30 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke300 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 MICJ40X300-30
Shave up to 30 mm off the forward end position on site with the AirTAC MICJ40X300-30, a double-acting round-body mini cylinder built from stainless steel. The adjustable air cushion at both ends soaks up high-speed shock, letting you set the exact extend stop and control the impact without swapping hardware.
This riveted stainless barrel and rod shrugs off mild corrosion and washdown. Because this SKU lacks the -S magnet, it cannot host CMSG, DMSG or EMSG sensors. Note that Ø40 is a non-ISO-6432 size, and the stop screw merely trims the extend stroke rather than locking mid-travel.
Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MICJ40X300-30
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -30 | 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 MICJ40X300-30 Is Used
Press Fit Tuning
Dial in the exact 270 mm extend stop to seat bearings without over-travel, letting the dual air cushions absorb the 879.6 N high-speed impact at 0.7 MPa.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X300-30 the Right Cylinder?
When sizing this 40 mm bore, dropping down to the Ø32 MICJ drops the 0.5 MPa push force to 402.2 N, while no larger MICJ bore exists. The 30 mm extend adjuster shines in fast set-position moves where you need to dial in a precise 270-300 mm forward stop under high speed, relying on the needle-set air cushions to decelerate the load. The piston drifts on air loss, so fit an external rod lock or pilot check valve if you must hold a suspended load. Mount via LB foot, FA flange or TC trunnion since the SDB pivot-block is unavailable here, and select the -S variant if you need position sensing.
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 MICJ40X300-30 FAQ
An external screw shortens the extend stroke by up to 30 mm on site, while needle valves tune the adjustable air cushions at both ends to decelerate high-speed moves. This SKU has no -S magnet so it cannot take sensors, and the stop screw is not a mid-stroke lock, so use an external rod lock to hold loads.
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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