Airtac MICJ Adjustable Mini Cylinder MICJ40X250-75
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X250-75 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 250mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke250 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 MICJ40X250-75
Dial in a precise forward stop on-site with the AirTAC MICJ40X250-75, a round-body stainless steel mini cylinder featuring a 75 mm adjustable extend stroke. An external screw trims the forward end position down from the 250 mm nominal maximum, letting you set the exact reach without swapping hardware. A needle-set variable air cushion at both ends soaks up high-speed shock to protect your tooling.
The stainless barrel and rod resist mild corrosion and washdown environments. Note this SKU lacks a magnet and cannot host CMSG/DMSG/EMSG sensors.
Airtac MICJ Adjustable Mini Cylinder MICJ40X250-75 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X250-75 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MICJ40X250-75
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -75 | 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 MICJ40X250-75 Is Used
Pallet Positioning Stop
Halts loaded pallets on a roller line; the dual adjustable air cushions absorb the impact of fast-moving 30 kg loads, while the extend stop screw dials in the exact halt point.
Vertical Pressing
Applies downward clamping pressure for assembly tasks. The stainless construction handles mildly corrosive fluids, and the forward stop ensures consistent 175 mm to 250 mm press depths.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X250-75 the Right Cylinder?
The dual adjustable cushions are essential for managing the inertia of those heavier loads operating at speeds up to 800 mm/s.
Remember that the external stop screw sets only the extend end position; it is not a mid-stroke lock. The cylinder will drift and the piston will not hold its load if air pressure is lost or the valve is centered—use an external rod lock or pilot-operated check valve for suspended loads. Mount using LB foot, FA flange, or TC trunnion brackets, as the SDB pivot-block is not available for this adjustable variant.
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 MICJ40X250-75 FAQ
This 40 mm bore double-acting cylinder uses a 1/4" air port.
An external screw shortens the extend stroke by up to 75 mm on-site, giving a usable forward range of 175-250 mm; retract remains full. Needle valves adjust the variable air cushions at both ends to decelerate high-speed impacts. This SKU has no magnet (-S required for CMSG/DMSG/EMSG sensors), and the stop screw is an end-position setter, not a mid-stroke lock.
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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