Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 275mm stroke, G1/4 air ports and adjustable end cushioning. Its no-tie-rod, hard-anodized profile barrel is more compact than an ISO 15552 cylinder of the same bore — a space-saver on tight machines.
- BoreØ40 mm
- Stroke275 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionAdjustable, 20.5 mm
- 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 JSIJ32~50 Adjustable Cylinder JSIJ40X275-30
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder brings compact actuation to tight assemblies. The hard-anodized aluminum barrel omits external rods, making the body noticeably shorter than an ISO 15552 cylinder of the same bore. A G1/4 port supplies the 30-800 mm/s speed range.
The -30 code defines an external stop screw that shortens the extend stroke on-site by up to 30 mm, yielding a usable 245-275 mm range while the retract end remains fixed. This lets you fine-tune the end position without swapping the cylinder. For sizing, it handles a safe working load of about 377 N, translating to roughly 32 kg lifted vertically with a 2:1 margin. Note this plain SKU lacks a magnet and cannot take a CMSE/DMSE sensor.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 | Adjustable, 20.5 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC JSI (JIS standard) datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G. Barrel: hard-anodized aluminum profile (no tie rods).
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×275 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensors. |
JSI-family variants: JSI (double acting), JSID (double rod), JSIJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / TCM1 / TCM2. Thread PT (blank) / G.
Where the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 Is Used
End-Stop Tuning
Dial in the exact 245 to 275 mm extend position on-site for parts that vary slightly in height, avoiding cylinder swaps.
Transfer Diverter
Shorten the extend stroke by 30 mm on the fly to deflect packages of different widths without repositioning the mount.
Compact Lift Stop
Lift roughly 32 kg vertically using the 40 mm bore, then set the external stop screw to halt travel before the maximum 275 mm.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 the Right Cylinder?
Size this 40 mm bore against its neighbours: drop to a 32 mm bore for lighter duties, or step up to a 50 mm bore if you need 982 N of push at 0.5 MPa. The adjustable stroke shines when you need on-site end-position tuning or want a shared spare across stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. For the 275 mm stroke, guide the load to prevent side-load wear on the rod seals. Because this SKU lacks the -S magnet, it cannot support position sensing.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-30 FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa it pushes 879 N and pulls 739 N. The theoretical maximum is 128 kgf at 1.0 MPa. The air port is G1/4.
The 275 mm nominal stroke is the maximum. The external stop screw lets you shorten the extend stroke on-site by up to 30 mm, giving a usable range of 245-275 mm. The retract end is fixed. This mechanism sets the end position and is not a load lock; for holding a load on air loss, use an external rod lock or pilot-operated check valve.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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