Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-20S 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 JSIJ40X275-20S
Tuning end positions on-site is effortless with this 40mm JIS profile cylinder, thanks to an external adjuster that shortens the extend stroke by up to 20mm. The hard-anodized aluminum barrel keeps the body more compact than a same-bore ISO 15552 unit. A built-in magnet (-S) allows CMSE/DMSE sensors to drop directly into the side grooves for position detection.
Operating through a G1/4 port, it delivers 628N of push force at 0.5MPa, handling a safe working load of about 377N or roughly 32kg lifted vertically with a 2:1 margin. The nominal 275mm stroke is the maximum; the retract end remains fixed. Note that the air cushion only decelerates the piston, so fit an external rod lock for load holding.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-20S |
|---|---|
| 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 JSIJ40X275-20S
| 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 JSIJ40X275-20S Is Used
Adjustable Stop Pressing
Dial in the exact 255-275mm extend position on-site for pressing sub-assemblies without machining new hard stops.
Transfer Lane Diversion
Fine-tune the diverting stroke length on a conveyor line to accommodate varying package widths quickly.
Vertical Lift Positioning
Lift approximately 32kg of goods vertically and adjust the upper stop safely within the 20mm window.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X275-20S the Right Cylinder?
This 40mm bore yields 628N push at 0.5MPa; step down to a 32mm bore for 402N, or up to a 50mm bore for 982N. The 20mm adjuster is ideal for fine-tuning the extend end position without swapping the cylinder, letting you standardize one spare across slight stroke variants. Mounting options include FA, LB, TC, TCM1, and TCM2. The -S suffix provides a piston magnet for CMSE/DMSE switches. Because the stroke is 275mm, ensure adequate side-load guidance to prevent rod bearing wear.
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 JSIJ40X275-20S FAQ
This 40mm bore cylinder uses a G1/4 port and provides 628N push / 528N pull at 0.5MPa, 879N push / 739N pull at 0.7MPa, with a theoretical maximum of 128kgf at 1.0MPa.
The external stop screw lets you shorten the extend stroke by up to 20mm on-site, giving a usable range of 255-275mm. The nominal 275mm is the maximum, and the retract end is fixed. This mechanism sets the end position and does not lock the load.
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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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