Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X50-20S
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X50-20S is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 50mm 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
- Stroke50 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 JSIJ100X50-20S
Its extruded hard-anodized aluminum barrel omits tie rods entirely, making the overall body shorter and more compact than a same-bore ISO 15552 unit. The integrated -S piston magnet allows CMSE/DMSE sensors to drop directly into the side grooves for precise end-of-stroke detection.
The -20 code means an external adjuster can shorten the 50 mm extend stroke on-site by up to 20 mm, yielding a usable 30 to 50 mm forward travel without swapping the cylinder. The retract end remains fixed, and the G1/2 port handles the required air volume. Note that the adjustable stop sets the end position; it does not lock the load on air loss.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X50-20S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X50-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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 JSIJ100X50-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×50 | 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 JSIJ100X50-20S Is Used
Press Fit Tuning
Dial in the exact 30 to 50 mm insertion depth for bearing presses on-site using the external adjuster, avoiding cylinder swaps when part tolerances vary.
Vertical Lift Gate
Raise and lower a 200 kg material gate vertically, relying on the compact JIS profile to fit within tight overhead machine clearances.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X50-20S the Right Cylinder?
The 20 mm extend-shortening window is ideal for fine-tuning the end position during machine commissioning or sharing a single spare SKU across slightly different stroke variants. You can mount it using FA, LB, TC, TCM1, or TCM2 brackets. The -S magnet supports reed or electronic switches. For any stroke length at or above 300 mm, always use external guide rails to prevent side-load damage to the rod seal.
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 JSIJ100X50-20S FAQ
The theoretical maximum force is 801 kgf at 1.0 MPa.
The 50 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 extend range of 30 to 50 mm. The retract end is fixed, and this mechanism only sets the end position; it does not hold the load without live air pressure.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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