Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40
The AirTAC SAIJ100X50-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 50 mm travel by up to 40 mm. This creates a highly versatile 10-50 mm usable travel window, perfect for dialing in exact end positions during machine commissioning without swapping hardware. It delivers a robust 3927 N push force at 0.5 MPa, making it well suited for heavy end-of-stroke pressing or holding tasks.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel retains standard sensor grooves on both sides, though this unit is supplied without a magnet. The rear adjuster acts purely as a mechanical stop to set the retract position and does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAIJ100BX50-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SAIJ100BX50-40 Is Used
Precision Positioning
Dial in the exact 10 to 50 mm retract distance during machine setup to accommodate varying part sizes without adding external stopper blocks.
Heavy Assembly Pressing
Leverage the 3927 N push force at 0.5 MPa to seat heavy components securely, using the adjustable end-stop to prevent over-travel.
Product Changeover
Quickly readjust the cylinder stroke on the production line when switching between product variants, minimizing downtime and tooling swaps.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-40 the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust, such as the 3927 N push force at 0.5 MPa, but require the flexibility to fine-tune the travel down to 10 mm for product changeovers. If your application demands less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. Because the nominal stroke is only 50 mm, side-load risks are minimal, but an external guide is always recommended for heavy loads. Remember that the rear adjuster is a travel stop, not a lock; for true load-holding without live air, select an AirTAC SAIL or BSAI cylinder.
To match this exact configuration for an ISO 15552 replacement, specify the 100 mm bore, 50 mm stroke, 40 mm adjustment range, PT port threads, SUS304 rod material, and no magnet. The SAIJ series supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
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 SAIJ100BX50-40 FAQ
The rear adjuster screw lets you shorten the 50 mm nominal stroke by up to 40 mm, providing a usable travel window of 10 to 50 mm. It acts as a mechanical stop to fine-tune the retract end position at commissioning.
At 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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