Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X275-20 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 JSIJ100X275-20
The hard-anodized aluminium barrel keeps the overall body shorter and more compact than a same-bore ISO 15552 unit, which helps when machine footprint is tight.
The -20 suffix means an external adjuster can shorten the extend stroke on-site by up to 20 mm, giving a usable forward travel of 255 to 275 mm while the retract end stays fixed. You fine-tune the end position without swapping the cylinder itself. This no-magnet SKU cannot take a CMSE or DMSE sensor; you need the -S variant for that. It uses a G1/2 port, a 32 mm rod, and adjustable air cushions at both ends to decelerate the load smoothly.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20 |
|---|---|
| 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 JSIJ100X275-20
| 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 JSIJ100X275-20 Is Used
Divert Gate Tuning
Powers a heavy divert gate on a packaging line, using the 20 mm adjuster to fine-tune the gate stop position for different carton widths without changing hardware.
Pallet Stop Adjustment
Acts as an end-stop for loaded pallets, where the external screw allows operators to shorten the extend stroke by 20 mm to accommodate varying pallet overhang.
Press Head Positioning
Drives a light assembly press head, letting maintenance shift the 275 mm maximum forward travel down to 255 mm to set a precise lower dead point on-site.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X275-20 the Right Cylinder?
When sizing, stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while moving up to 125 mm raises it to 6136 N. The on-site adjustability is ideal when you need to share one spare cylinder across several stroke variants or dial in a final end position after mechanical changes. Mounting options include FA, LB, TC, TCM1, and TCM2. Because this is a 275 mm stroke, fit a guide rail to absorb any side-load and prevent rod binding. Note that a plain cylinder drifts on air loss; fit an external rod lock or pilot-operated check valve if the load must be held.
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 JSIJ100X275-20 FAQ
At 0.5 MPa it pushes with 3927 N and pulls with 3574 N. At 0.7 MPa the push is 5497 N and the pull is 5003 N. The theoretical maximum force is 801 kgf at 1.0 MPa. It has a 32 mm rod, M26x1.5 rod thread, and a G1/2 port.
The 275 mm nominal stroke is the maximum forward travel. The external adjuster 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. This mechanism sets the end position and does not lock the load.
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