Airtac SAIJ50 Adjustable Cylinder SAIJ50BX110-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX110-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 110mm 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
- Stroke110 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 SAIJ50BX110-75S
The AirTAC SAIJ50X110-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 35 to 110 mm. Delivering 982 N of push thrust at 0.5 MPa, it bridges the gap between smaller 40 mm bores and larger 63 mm units. The extruded aluminum barrel includes sensor grooves on both sides, and because this variant includes a magnet, it supports direct mounting of CMSE reed or DMSE electronic solid-state switches for precise end-position detection.
This specific SKU uses a SUS304 stainless steel rod (option B) for superior corrosion resistance in humid or washdown environments. It features PT tapered port threads and a G1/4 air connection. The rear adjustment screw acts purely as a mechanical stop to dial in the exact retract position during commissioning or product changeovers without adding external stops. It is not a locking device, so the cylinder cannot hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX110-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX110-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 110 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 SAIJ50BX110-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×110 | 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 SAIJ50BX110-75S Is Used
Variable Product Changeover
Dial in the exact end-stop position on the fly when switching between different package lengths or product heights on a single conveyor line.
Commissioning End-Tuning
Fine-tune the 35-110 mm travel window during machine setup to perfect the seating force without physically replacing the cylinder or adding shims.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for positioning tasks in light manufacturing areas exposed to moisture or washdown chemicals.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX110-75S the Right Cylinder?
Choose this 50 mm bore when an application requires roughly 982 N of push force at 0.5 MPa, stepping up from the 628 N capacity of a 40 mm bore, or when scaling down from the 1559 N thrust of a 63 mm unit to save space and air volume. The 75 mm adjustment range is exceptionally wide, making this cylinder ideal for machines that run multiple product sizes and need a variable end-stop rather than swapping fixed-stroke SAI cylinders. For load-holding requirements without continuous air pressure, integrate an external pilot-operated check valve or select an AirTAC SAIL or BSAI series cylinder instead.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 110 mm nominal stroke, 75 mm adjustment requirement, PT G1/4 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets. Because the 16 mm rod and M12x1.25 thread handle moderate side loads, ensure external guidance is used if the tooling generates off-center forces.
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 SAIJ50BX110-75S FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push thrust and 825 N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw lets you mechanically shorten the nominal 110 mm stroke by up to 75 mm, creating a usable travel window of 35 to 110 mm. It functions as a travel stop to set the retract position and does not lock the load without live air.
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