Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 1000mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke1000 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20
The AirTAC SAIJ40X1000-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position without swapping components. With a 1000 mm nominal stroke and a 20 mm adjustment range, it provides a usable travel window of 980 to 1000 mm. This bore size delivers 628 N of push force at 0.5 MPa, making it well-suited for moderate load handling over extended distances.
This unit is configured with a SUS304 stainless steel rod for superior corrosion resistance and ships without a magnet. It uses PT tapered ports and offers variable air cushions at both ends to manage kinetic energy. The rear adjuster acts purely as a travel stop to dial in the retract position during commissioning; it does not lock the load without continuous air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAIJ40 Adjustable Cylinder SAIJ40BX1000-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×1000 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 Is Used
Machine Changeover
Dial in the 980-1000 mm retract position precisely during product size changes without machining new hard stops.
Extended Transfer Lines
Pushes moderate loads along long material handling conveyors using 628 N of thrust at 0.5 MPa.
Corrosive Assembly Stations
Leverages the SUS304 stainless steel rod for reliable actuation in environments requiring high corrosion resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 the Right Cylinder?
Choose this 40 mm bore when you need the 628 N thrust at 0.5 MPa but want to avoid the larger footprint and 982 N force of a 50 mm cylinder. The adjustable stroke is ideal for machine setups requiring precise end-position tuning during product changeovers, replacing the need for fixed-stroke SAI cylinders or external stops. To match this cylinder for an ISO 15552 replacement, verify the 1000 mm stroke, 20 mm adjustment, PT G1/4 port, and your required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the stroke is 1000 mm, the 16 mm rod needs external guidance to prevent excessive side-loading and sagging over that long unsupported distance. Remember that the rear adjuster only sets the travel end and is not a locking device; for load-holding without live air, consider an external rod lock or a SAIL cylinder.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ 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 Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX1000-20 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a 980 to 1000 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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