Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 100mm stroke, G1/4 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.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- CushionAdjustable, 20.5 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 JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S
Delivering 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder uses an external adjuster to shorten the extend stroke on-site by up to 20 mm. The nominal 100 mm stroke remains the maximum travel, letting you fine-tune the end position without swapping the actuator. It handles about 377 N of safe working load, which means lifting roughly 32 kg vertically with a 2:1 margin. The hard-anodized aluminum barrel omits tie rods entirely, making the body shorter and more compact than a same-bore ISO 15552 unit.
This double-acting single-rod model includes a built-in piston magnet for CMSE/DMSE sensors that mount directly into the side grooves. Air connects via a G1/4 port, and adjustable air cushions at both ends absorb kinetic energy near the stroke limits. The retract end is fixed, while the external stop screw sets the extend endpoint. Remember that the cushion only decelerates; use an external rod lock or pilot-operated check valve if you need to hold a load on air loss.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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, 20.5 mm |
| Max standard stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | 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 JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S Is Used
Press Fit Dialing
Fine-tune the extend endpoint by up to 20 mm on-site to set precise press depths for bearing insertion without machining new hard stops.
Transfer Stroke Trimming
Adjust the pusher extension on a packaging line to handle different carton lengths while keeping the fixed retract position for the home sensor.
Spare Actuator Pooling
Stock one 100 mm nominal cylinder and shorten the extend stroke as needed to cover multiple sub-stroke machine variants during maintenance.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S the Right Cylinder?
When sizing this 40 mm bore actuator, the neighboring 32 mm option offers 402 N push at 0.5 MPa for lighter duties, while the 50 mm bore steps up to 982 N for heavier cycles. The JSIJ series supports Basic, FA, LB, TC, TCM1, and TCM2 mounts. The adjustable stroke is ideal for sharing a spare across stroke variants or dialing in final end positions on the machine. Because this unit has the -S suffix, it accepts CMSE/DMSE reed or electronic switches. For any stroke at or above 300 mm, always guide the load 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 JSIJ32~50 Adjustable Cylinder JSIJ40X100-20S FAQ
At 0.5 MPa it pushes 628 N and pulls 528 N. At 0.7 MPa the push is 879 N and the pull is 739 N. The theoretical maximum force is 128 kgf at 1.0 MPa. The air port is G1/4.
The external stop screw lets you shorten the extend stroke by up to 20 mm on-site, giving a usable extend range of 80 to 100 mm. The nominal 100 mm stroke is the maximum travel, and the retract end remains fixed. This mechanism sets the end position and is not a load lock.
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