Airtac SAIJ40 Adjustable Cylinder SAIJ40X200-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40X200-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 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 SAIJ40 Adjustable Cylinder SAIJ40X200-40
The AirTAC SAIJ40X200-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 200 mm travel by up to 40 mm. This creates a precise 160-200 mm usable stroke window, allowing you to dial in the exact end position at commissioning without swapping hardware. It delivers 879 N of push force at 0.7 MPa and pulls 528 N, making it a solid mid-range choice. The extruded aluminum barrel includes dual sensor grooves for flexible mounting of CMSE reed or DMSE electronic switches.
A defining benefit of this adjustable variant is eliminating external stops during product changeover. The rear adjuster acts purely as a mechanical travel stop, so it cannot hold a load without live air pressure. For load-holding safety, consider the SAIL or BSAI series instead. This 40 mm bore uses a G1/4 port and an M12x1.25 rod thread, paired with 30 mm cushions at both ends to manage impact energy.
Airtac SAIJ40 Adjustable Cylinder SAIJ40X200-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40X200-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAIJ40X200-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SAIJ40X200-40 Is Used
Machine Changeover
Quickly adapt the retract end-position for different product sizes on a packaging line without bolting on new physical stops.
Commissioning Calibration
Fine-tune the 160-200 mm travel window during initial setup to perfectly time the pick-and-place sequence.
Variable End Stops
Dial in the exact clamping depth on light assembly presses where a fixed 200 mm stroke would apply too much force.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40X200-40 the Right Cylinder?
Choose this 40 mm bore when your application needs 879 N push force at 0.7 MPa. If your load is lighter, stepping down to a 32 mm bore yields 563 N, while moving up to a 50 mm bore provides 1374 N. The 40 mm adjustment range here is ideal for setups requiring variable end-stops or fine-tuning during machine commissioning. Since the stroke is 200 mm, standard mounting supports the load, but always guide unsupported loads to prevent rod side-loading.
To match this ISO 15552 cylinder for a replacement, verify the 200 mm stroke, 40 mm adjustment, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted. Because no magnet is specified, position sensing requires adding a separate piston magnet or external switch setup.
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 SAIJ40X200-40 FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder generates 879 N of push force and 528 N of pull force. It can reach a maximum push force of 1130 N at 0.9 MPa.
The rear adjuster screw lets you shorten the 200 mm nominal stroke by up to 40 mm, providing a usable travel window of 160-200 mm. This stopper sets the end position but does not lock the load without live air pressure.
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