Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 170mm 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.
- BoreØ50 mm
- Stroke170 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAIJ50 Adjustable Cylinder SAIJ50BX170-100S
The AirTAC SAIJ50X170-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 170 mm nominal stroke to a minimum of 70 mm. This wide 100 mm adjustment window is ideal for machines that require rapid repositioning of the end-stop during product changeovers without swapping out the actuator. It delivers 982 N of push thrust at 0.5 MPa, scaling up to 1767 N at 0.9 MPa.
This unit is built with a SUS304 stainless steel rod for superior corrosion resistance and includes a built-in magnet for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel provides sensor grooves on both sides, and fluid is supplied via PT (tapered) G1/4 ports. The rear screw acts purely as a mechanical stop to set the retract position; it does not lock the load, so live air is required to hold position.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 170 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×170 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX170-100S Is Used
Variable Product Changeover
Dial in a completely new end-position for different packaging lengths on the fly, utilizing the full 100 mm adjustment window to avoid physically remounting the cylinder.
Machine Setup Calibration
Fine-tune the retract distance during commissioning to achieve exact positioning of a pressing or clamping head without adding external mechanical stops.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod and 982 N of thrust to reliably move components in food processing or chemical handling lines where moisture is present.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX170-100S the Right Cylinder?
Choose this 50 mm bore when your application needs the 982 N push force at 0.5 MPa. If your load requires less force, stepping down to a 40 mm bore yields 628 N, whereas moving up to a 63 mm bore provides 1559 N. The 100 mm adjustment range on this specific SKU is significantly wider than smaller adjusters, making it the preferred choice for highly variable product sizes rather than a fixed-stroke SAI cylinder.
Because this is a 170 mm stroke, it sits below the 300 mm threshold where external side-load guides become mandatory, but the 20 mm rod diameter still handles moderate side loads well. For true load-holding without continuous air pressure, you would need to step up to an SAIL (air-released lock) or BSAI (clamp-lock) cylinder, as the SAIJ adjuster is only a travel stop. To replace this unit, match the 50 mm bore, 170 mm stroke, 100 mm adjuster, G1/4 PT ports, and the -S magnet, selecting from the SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ50 Adjustable Cylinder SAIJ50BX170-100S FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If you increase the pressure to 0.9 MPa, the push force rises to 1767 N.
The rear adjuster screw lets you shorten the 170 mm nominal stroke by up to 100 mm, creating a usable travel window of 70 to 170 mm. The screw functions as a mechanical stop to set the end position and does not lock the load without live air pressure.
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