Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-20S 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 SAIJ100BX50-20S
The AirTAC SAIJ100X50-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and features a 20mm adjustment range, creating a precise 30-50mm usable travel window for dialing in end positions. This cylinder includes a SUS304 stainless steel piston rod and a PT tapered port thread.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract position during commissioning without adding external stops. It does not hold the load without live air; for pilot-operated check valve or lock requirements, consider the SAIL or BSAI series. This -S variant includes a magnet for CMSE reed and DMSE electronic sensors, and uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-20S |
|---|---|
| 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 SAIJ100BX50-20S
| 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 SAIJ100BX50-20S Is Used
Machine Changeover
Dial in the 30-50mm travel window during product size transitions without swapping the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the retract stop during commissioning to perfect a high-force pressing or holding operation.
Automated Clamping
Apply up to 3927N of push force at 0.5 MPa to secure heavy workpieces, adjusting the stroke to accommodate varying part thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX50-20S the Right Cylinder?
Choose this 100mm bore cylinder when an application requires high force (3927N push at 0.5 MPa) alongside precise end-position tuning. If your process needs less force, stepping down to an 80mm bore yields 2513N push force. The 20mm adjustable travel window is ideal for product-size changeovers on a line, avoiding the need to physically swap out a fixed-stroke SAI cylinder. Because the 50mm nominal stroke is short, external side-load guides are less critical here, but the robust 25mm rod and M20x1.5 thread handle high stress well.
When replacing an ISO 15552 cylinder, match the 100mm bore, 50mm stroke, PT tapered port thread, and the desired mounting accessory. The -S magnet enables position sensing with AirTAC CMSE or DMSE switches, and the B code rod material provides SUS304 stainless steel corrosion resistance.
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 SAIJ100BX50-20S FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back by up to 20mm. With the 50mm nominal stroke, this creates a usable travel window of 30-50mm for fine-tuning the end position during setup.
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