Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S
The AirTAC Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø125mm bore and 100mm 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.
- BoreØ125 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- 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 JSIJ125X100-30S
Delivering 6136 N of push force at 0.5 MPa, this 125 mm bore JIS actuator tackles heavy-duty motion while remaining more compact than a same-bore ISO 15552 cylinder. The hard-anodized aluminum profile barrel keeps the unit rigid without external rods. It handles about 3682 N of safe working load, which translates to roughly 313 kg lifted vertically with a 2:1 margin. Air connects via a G1/2 port.
The -30 code means an external adjuster can shorten the extend stroke on-site by up to 30 mm, giving a usable range of 70-100 mm from the fixed retract end. Because this is an -S SKU, a built-in piston magnet pairs directly with CMSE/DMSE switches in the side grooves. Remember that the air cushion only decelerates the load; use an external rod lock or pilot-operated check valve if you need to hold position against gravity.
Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S Technical Specifications
| Model | Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×100 | 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 JSIJ125X100-30S Is Used
Heavy Pallet Lift
Raises loaded pallets in a packaging line, using the 30 mm extend window to fine-tune the exact release height for different container sizes.
Press Clamping
Secures heavy steel blanks during stamping, relying on the 6136 N push force and adjusting the end position to accommodate varied material thicknesses.
Mold Ejection
Pushes large injection molds out of the machine, using the built-in magnet and CMSE sensors to confirm ejection completion before the next cycle.
Is the Airtac JSIJ100~125 Adjustable Cylinder JSIJ125X100-30S the Right Cylinder?
When sizing this actuator, look at the neighboring bores to balance footprint and force. Dropping to a 100 mm bore yields 3927 N push at 0.5 MPa, while this 125 mm unit outputs 6136 N and can hit a theoretical max of 1251 kgf at 1.0 MPa. The adjustable stroke is ideal for sharing one spare across machines that need slightly different extend endpoints, letting you fine-tune the 70-100 mm window on the floor without swapping the cylinder. Mounting options include FA, LB, TC, TCM1, and TCM2 brackets. The -S magnet supports CMSE/DMSE sensors for position feedback. For any stroke length at or above 300 mm, always use a guide rail 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 JSIJ125X100-30S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The external stop screw lets you shorten the extend stroke on-site by up to 30 mm. With a 100 mm nominal stroke, the usable extend range is 70-100 mm, while the retract end remains fixed. The stop sets the end position but does not lock the load.
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Standard models are processed and dispatched in 3-5 business days.
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