Airtac MICJ Adjustable Mini Cylinder MICJ40X250-50
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X250-50 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 MICJ40X250-50
Dial in a precise forward stop on-site with the AirTAC MICJ40X250-50, a double-acting round-body mini cylinder featuring a 50 mm adjustable extend stroke. An external screw trims the forward end position down from the 250 mm nominal maximum without swapping hardware, while a needle-set adjustable air cushion at both ends soaks up high-speed shock. This Ø40 mm bore operates on a 1/4" port and hits speeds of 30-800 mm/s.
Because this is a non-magnetic SKU, it cannot accept CMSG, DMSG, or EMSG sensors; you would need the -S variant for position detection. Note that the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss, so add an external rod lock or pilot check valve for held loads.
Airtac MICJ Adjustable Mini Cylinder MICJ40X250-50 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X250-50 |
|---|---|
| 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 MICJ40X250-50
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X250-50 Is Used
Heavy Part Clamping
Secure heavy machined components with up to 879.6 N of clamping force at 0.7 MPa, fine-tuning the 50 mm extend stop to match varying part widths perfectly.
Pallet Deceleration
Use the dual adjustable air cushions to safely absorb the kinetic energy of fast-moving 30 kg pallets arriving at a 250 mm transfer station without slamming.
Vertical Lift Gates
Lift packaging flow gates weighing around 32 kg, relying on the external stop screw to set the exact 220 mm open height required for carton clearance.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X250-50 the Right Cylinder?
The 50 mm extend adjuster paired with the dual air cushions is specifically valuable for fast, settable-position moves where you need to tune out impact shock at the end of travel without re-engineering the fixture. Mount using LB foot, FA flange, or TC trunnion brackets, plus CA, U, R, or CM back covers; the SDB pivot-block is not available on this adjustable-stroke build. Since this SKU lacks a magnet, it cannot host sensors.
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 MICJ40X250-50 FAQ
This 40 mm bore cylinder features a 1/4" port and an M12x1.25 male rod thread.
An external stop screw shortens the extend stroke by up to 50 mm on-site, letting you set the exact forward end position; retract remains full length. Needle valves adjust the air cushion at both ends to decelerate the piston before impact. This SKU has no magnet, so it cannot accept position sensors.
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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