Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-20
The AirTAC Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-20 is a genuine double acting, adjustable stroke JIS-standard air cylinder with a Ø40mm bore and 900mm 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
- Stroke900 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 JSIJ40X900-20
Generating 628 N of push force at 0.5 MPa, this 40 mm bore JIS profile cylinder is built for compact automation. The hard-anodized aluminum barrel leaves out external rods, making the body shorter and more compact than a same-bore ISO 15552 unit. It handles a safe working load of about 377 N, which is roughly 32 kg lifted vertically with a 2:1 margin.
A 20 mm external stop screw lets you fine-tune the extend stroke on-site from 880 to 900 mm without swapping the cylinder. The retract end remains fixed. Air connects via a G1/4 port, and adjustable air cushions of 20.5 mm decelerate the piston at both ends. Note that a plain cylinder drifts on air loss; the cushion only decelerates and does not lock the load.
Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-20 Technical Specifications
| Model | Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-20 |
|---|---|
| Series | JSI JIS-standard profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 JSIJ40X900-20
| JSIJ | JIS-standard profile cylinder (adjustable-stroke type). |
|---|---|
| 40 | Bore size in mm (32 / 40 / 50 / 63 / 80 / 100 / 125). |
| ×900 | 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 JSIJ40X900-20 Is Used
Long-Reach Transfer
Pushes parts down a 900 mm conveyor lane, using the 20 mm adjuster to dial in the exact push-off distance on-site.
Warehouse Divert Gate
Actuates a long diverter arm, shortening the extend stroke by 20 mm to accommodate varying package sizes without changing the cylinder.
Carton Positioning Stop
Deploys a 900 mm stopper fence for large pallets, fine-tuning the end position to align cartons precisely.
Is the Airtac JSIJ32~50 Adjustable Cylinder JSIJ40X900-20 the Right Cylinder?
Size this 40 mm bore against the neighbouring 32 mm and 50 mm options. The 32 mm bore yields 402 N push at 0.5 MPa, while the 50 mm bore jumps to 982 N. Choose the 40 mm bore when you need the 628 N push force and a 16 mm rod. The 20 mm adjustable window is ideal for sharing a spare across stroke variants or fine-tuning the end position on-site. JSIJ mounting options include FA, LB, TC, TCM1, and TCM2. Because the 900 mm stroke is long, always use an external guide to prevent rod bending and side loads. This SKU lacks a magnet, so it cannot take a CMSE or DMSE sensor.
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 JSIJ40X900-20 FAQ
At 0.5 MPa it provides 628 N push and 528 N pull. At 0.7 MPa it delivers 879 N push and 739 N pull. The theoretical maximum force is 128 kgf at 1.0 MPa. It uses a G1/4 port and a 16 mm rod.
The nominal 900 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable extend range of 880 to 900 mm. The retract end is fixed, and this stop is for positioning only, not for holding a load.
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