Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S
The AirTAC SAIJ100X500-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and provides a usable travel window of 450-500mm, letting you dial back the nominal 500mm stroke by up to 50mm during commissioning. The SUS304 stainless steel rod and PT tapered port threads are configured for demanding environments.
The rear adjustment screw acts strictly as a travel stop to fine-tune the retract end position without adding external stops or swapping the cylinder. It is not a locking device, so you must maintain live air to hold a load. For position holding without pressure, consider an external rod lock or the related SAIL or BSAI series. This extruded aluminum profile cylinder supports AirTAC CMSE reed and DMSE electronic sensors via its dual side grooves.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100BX500-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SAIJ100BX500-50S Is Used
Machine Changeover
Quickly reconfigure the retract end-position by up to 50mm when switching product sizes on a packaging line, avoiding mechanical cylinder swaps.
End-Stop Tuning
Fine-tune the 450-500mm travel window at commissioning to perfectly seat heavy assemblies without fabricating external stopper blocks.
Heavy Forming Press
Leverage 3927N of push force at 0.5 MPa to drive heavy stamping or forming tools, using the rear screw to set precise retraction depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-50S the Right Cylinder?
Choose this 100mm bore when an 80mm bore (2513N push at 0.5 MPa) lacks thrust or a 125mm bore (6136N) is oversized. The 50mm adjustment range is ideal for product changeovers on automated lines, allowing variable end-stops without replacing the cylinder. As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints using the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts, omitting FB, CA, CB, and CR options.
With a 500mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide rigidity, but the long unsupported extension requires an external guide to prevent side-load damage. The variable air cushions at both ends decelerate the travel, operating at speeds of 30-800mm/s. For fixed travel without the adjuster, the standard SAI series is the alternative.
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 SAIJ100BX500-50S FAQ
At 0.5 MPa it provides 3927N push force and 3681N pull force. At 0.7 MPa the push force increases to 5497N, and it reaches a maximum of 801 kgf at 1.0 MPa.
The rear adjuster screw lets you trim the effective travel back from the 500mm nominal stroke by up to 50mm, creating a 450-500mm usable window. It functions as a mechanical stop to set the end position and does not lock the load without live air pressure.
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