Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-50S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-50S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke275 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM18×1.5
- 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 JSIJ50X275-50S
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore JIS profile cylinder features an external adjuster that lets you shorten the extend stroke on site by up to 50 mm. The nominal 275 mm stroke remains the maximum travel, while the retract end stays fixed, allowing precise end-position tuning without swapping the whole unit. Because it is a JIS build with an extruded hard-anodized aluminum barrel, the overall body is shorter and more compact than a same-bore ISO 15552 cylinder. The integrated -S magnet supports CMSE/DMSE sensors in the side grooves for exact position feedback.
In practical terms, the unit handles a safe working load of about 589 N, which translates to lifting roughly 50 kg vertically with a 2:1 safety margin. Air connects via a G1/4 port, and adjustable air cushions of 20.5 mm at each end absorb kinetic energy near the stroke limits. Remember that the cushion only decelerates the piston; a plain cylinder cannot hold a load on air loss, so fit an external rod lock or pilot-operated check valve if you need to prevent drift.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-50S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-50S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M18×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 JSIJ50X275-50S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 50 | 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 JSIJ50X275-50S Is Used
Stroke Tuning on Clamping Jigs
Dial in the exact clamping reach on machining jigs by shortening the extend stroke up to 50 mm on site, accommodating different part heights without changing the cylinder.
Adjustable Transfer Stops
Use the external stop screw to alter the pusher position on a conveyor line, allowing rapid format changes for varying package sizes while retaining full 275 mm travel when needed.
Vertical Lift Positioning
Lift loads up to 50 kg vertically and fine-tune the upper stopping point precisely, ensuring delicate placement without overextending the mechanism.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ50X275-50S the Right Cylinder?
When sizing this model, look at the neighbouring bores: a 40 mm bore gives 628 N push at 0.5 MPa, while a 63 mm bore yields 1559 N, so the 50 mm bore at 982 N is the right middle ground for medium force tasks. The -50 mm adjustable window is especially useful when you need to fine-tune the extend end position on the machine or want a single shared spare across slightly different stroke variants. You can mount it using the FA, LB, TC, TCM1, or TCM2 brackets. The built-in -S magnet allows CMSE/DMSE switches to drop directly into the barrel grooves. Because the 275 mm stroke exceeds 300 mm when combined with the bore, ensure you guide the load to prevent excessive side loading on the rod.
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 JSIJ50X275-50S FAQ
This 50 mm bore cylinder has a G1/4 air port. It generates 982 N push and 825 N pull at 0.5 MPa, increasing to 1374 N push and 1154 N pull at 0.7 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa.
The external adjuster lets you shorten the extend stroke by up to 50 mm on site, giving a usable extend range of 225-275 mm. The nominal 275 mm stroke is the maximum travel, and the retract end remains fixed. This mechanism sets the end position and does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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