Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X350-20
The AirTAC JSIJ100~125 Adjustable Cylinder JSIJ100X350-20 is a genuine double acting, double rod, adjustable stroke JIS-standard air cylinder with a Ø100mm bore and 350mm 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
- Stroke350 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 JSIJ100X350-20
Its external adjuster allows you to shorten the extend stroke on-site by up to 20 mm, giving a usable range of 330 to 350 mm without swapping the cylinder. The retract end remains fixed. Because the nominal 350 mm stroke is the maximum, you can fine-tune the stopping point perfectly during machine commissioning.
Built to JIS standards with an extruded hard-anodized aluminum profile barrel, it is noticeably shorter and more compact than a same-bore ISO 15552 cylinder. The G1/2 port feeds the 32 mm rod, and adjustable 33 mm air cushions decelerate the payload at both ends. Note this plain SKU lacks a magnet and cannot take a sensor; you would need the -S variant for CMSE or DMSE switches.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X350-20 Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X350-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 350 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 JSIJ100X350-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 100 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×350 | 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 JSIJ100X350-20 Is Used
Press Die Clearance
Dial in the exact 330 to 350 mm extend position during setup to safely clear press dies, using the external adjuster to fine-tune the heavy 100 mm bore stroke without remounting hardware.
Pallet Stopper Gate
Act as a heavy pallet stop gate where the 20 mm on-site shortening window lets operators tweak the stopping distance as conveyor product sizes change on the line.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ100X350-20 the Right Cylinder?
The 100 mm bore sits in a strong middle ground at 3927 N, making it ideal for medium-heavy payloads. The 20 mm adjustable window is highly useful when you want a shared spare across slightly different stroke variants or need to dial in a final end position on-site. JSIJ mounting options include Basic, FA, LB, TC, TCM1, and TCM2. Because the 350 mm stroke is fairly long, always use external guides to prevent rod bending and manage side loads. Remember that a plain cylinder drifts on air loss, so add an external rod lock or pilot-operated check valve if you need to hold a load vertically.
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 JSIJ100X350-20 FAQ
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. This 100 mm bore model uses a G1/2 air port and a 32 mm piston rod.
The external stop screw lets you shorten the extend stroke on-site by up to 20 mm. The usable extend range is 330 to 350 mm, with the nominal 350 mm being the maximum. The retract end is fixed. This mechanism only 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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