Airtac SAIJ50 Adjustable Cylinder SAIJ50BX115-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX115-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 115mm 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
- Stroke115 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 SAIJ50BX115-100S
The AirTAC SAIJ50X115-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 50 mm bore, delivering 982 N of push force at 0.5 MPa, and uses a PT tapered port thread. The integrated SUS304 stainless steel rod provides excellent corrosion resistance for demanding environments. Because this specific SKU carries a 100 mm adjustment code on a 115 mm nominal stroke, you gain an exceptionally wide usable travel window from 15 to 115 mm.
This massive adjustment band allows you to dial in the exact retract end-position during commissioning without swapping hardware or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the included magnet (-S) supports position detection via AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop for deceleration alongside the variable air cushions, meaning it will not hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX115-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX115-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 115 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 SAIJ50BX115-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×115 | 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 SAIJ50BX115-100S Is Used
Variable End-Stop Positioning
Ideal for test fixtures or assembly stations where the retract distance must be frequently modified across the 15 to 115 mm range without changing out the cylinder body.
Machine Changeover
Quickly accommodate different product sizes on a single line by turning the rear adjuster to shift the end position, reducing setup time between production runs.
Corrosive Environment Actuation
The SUS304 stainless steel rod makes this cylinder suitable for packaging or food-grade washdown areas where standard carbon steel rods would degrade.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX115-100S the Right Cylinder?
Choose this 50 mm bore adjustable cylinder when an application requires extreme flexibility in end-stop positioning, as the 100 mm adjuster provides a 15-115 mm travel window. If you need less adjustability to save physical space, a smaller adjustment code like -20 is preferable. If your setup requires higher thrust, stepping up to a 63 mm bore yields 1559 N at 0.5 MPa. Keep in mind the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. For load-holding without continuous air pressure, this cylinder is insufficient; you must integrate an external rod lock or look at the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 115 mm nominal stroke, PT port thread, and the -S magnet requirement. The 20 mm piston rod and M16x1.5 rod thread offer robust resistance to side loads, though any stroke at or above 300 mm necessitates an external guide to prevent rod binding.
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 SAIJ50BX115-100S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear mechanical screw allows you to trim the effective stroke by up to 100 mm from the 115 mm nominal length, creating a usable travel window of 15 to 115 mm. It functions as a physical stop and does not lock the load without live air pressure.
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