Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 275mm stroke, G1/2 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.
- BoreØ100 mm
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM26×1.5
- CushionAdjustable, 33 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 JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S
The hard-anodized aluminum extrusion omits tie rods entirely, and the G1/2 port handles the air volume needed for dynamic response. A built-in piston magnet (-S) lets you drop CMSE or DMSE reed and electronic switches directly into the side grooves for position sensing.
The -20 code means an external stop screw lets you trim the extend stroke by up to 20 mm on site, giving a usable forward travel of 255 to 275 mm while the retract end stays fixed. You can fine-tune the end position without physically swapping the cylinder, which is ideal when sharing a spare across slightly different machine variants. Factoring a conservative safety margin, it handles about 2356 N of real work, translating to a vertical lift of roughly 200 kg. Remember that the adjustable stop sets the end position; it does not hold the load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M26×1.5 |
| 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, 33 mm |
| Max standard stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3525 N | 3525 N |
| 0.7 MPa | 4935 N | 4935 N |
| Max (@1.0 MPa) | 719 kgf | |
JSIJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative).
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | 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 JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S Is Used
Press Fit Tuning
Trim the 20 mm extend window on-site to dial in the exact seating depth of a bearing without changing the physical cylinder setup.
Pallet Stop Adjustment
Shorten the forward stroke from 275 mm to 255 mm to accommodate varying pallet dimensions on a shared conveyor line.
Vertical Lift Limit
Leverage the 200 kg vertical lift capacity and adjust the downward travel to prevent mechanical crashes at the bottom of the stroke.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S the Right Cylinder?
The adjustable stroke is a major advantage when you need on-site end-position tuning or want a single spare cylinder to cover several stroke variants. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because this model includes the -S magnet, it is ready for CMSE/DMSE sensors. For any stroke at or over 300 mm, always use a guide rail to prevent side-load damage to the rod seals.
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 JSIJ100~125 Adjustable Cylinder JSIJ100X275-20S FAQ
The theoretical maximum force is 801 kgf at 1.0 MPa. The air port is G1/2.
The nominal stroke is 275 mm, which is the maximum extend travel. An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 255 to 275 mm. The retract end is fixed, and this stop only sets position; it does not lock the load.
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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.
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Most inquiries answered within 7-8 hours.
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