Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40
The AirTAC SAIJ100X550-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel by up to 40 mm. This yields a precise 510-550 mm usable window, letting you dial in the retract end position during commissioning without swapping the cylinder or adding external stops. It delivers a robust 3927 N of push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa.
Equipped with a 25 mm carbon steel rod and an M20x1.5 thread, this 100 mm bore unit handles substantial side loads, though the 550 mm stroke means an external guide is recommended for unsupported lengths. The extruded aluminum barrel includes sensor grooves on both sides, and because no magnet is specified here, you would add the -S option to use CMSE reed or DMSE electronic solid-state switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100 Adjustable Cylinder SAIJ100X550-40 Is Used
Machine Changeover
Fine-tune the 510-550 mm retract position during product size changes on a packaging line without bolting on physical spacers.
End-Stop Calibration
Dial in the exact end of stroke during initial commissioning to prevent over-travel and crush damage on delicate workpieces.
Variable Diverter Stroke
Adjust the pusher travel window on the fly to accommodate different carton widths moving down a handling conveyor.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-40 the Right Cylinder?
Choose this adjustable SAIJ model over a fixed-stroke SAI when your machine setup requires variable end-stops or product-size changeovers on the fly. If you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa; stepping up to 125 mm provides 6136 N. Remember that the rear adjuster acts strictly as a travel stop, not a lock. The SAIJ100X550-40 cannot hold a load without live air pressure. For true load-holding, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI series.
To match this exact ISO 15552 footprint for a direct replacement, verify the 100 mm bore, 550 mm stroke, 40 mm adjustment range, PT tapered port threads, and your preferred mounting from the available SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note that FB, CA, CB, and CR mounts are omitted from this adjustable series.
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 SAIJ100 Adjustable Cylinder SAIJ100X550-40 FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
A rear screw stopper lets you shorten the nominal 550 mm stroke by up to 40 mm, creating a 510-550 mm travel window. It acts as a physical stop and does not lock the load without air pressure.
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