Airtac SAIJ50 Adjustable Cylinder SAIJ50BX105-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX105-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 105mm 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
- Stroke105 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 SAIJ50BX105-30S
The AirTAC SAIJ50X105-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 105 mm stroke by up to 30 mm for a precise 75-105 mm usable travel window. It provides 982 N of push force and 825 N of pull force at 0.5 MPa, making it well-suited for mid-range actuation. The piston rod is constructed from SUS304 stainless steel (code B) for superior corrosion resistance, and the PT tapered port threads ensure a robust, leak-free pneumatic connection.
This unit includes a built-in magnet (-S) for position sensing, designed to work seamlessly with AirTAC CMSE reed switches and DMSE solid-state electronic sensors housed in the dual-side extruded barrel grooves. The rear adjustment mechanism acts purely as a mechanical stop to fine-tune the end position at commissioning without adding bulky external stops, but it does not lock the load mechanically upon loss of air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX105-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX105-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 105 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 SAIJ50BX105-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×105 | 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 SAIJ50BX105-30S Is Used
Product Changeovers
Quickly adapt the stroke end-position within the 75-105 mm window during line changeovers without physically swapping the cylinder or re-engineering external stop blocks.
End-Position Tuning
Dial in the exact retract distance during machine commissioning to compensate for mechanical tolerances, ensuring precise placement of parts.
Corrosive Environments
The SUS304 stainless steel rod and adjustable travel make it ideal for positioning sensors or actuators in washdown or chemically exposed testing fixtures.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX105-30S the Right Cylinder?
Choose this 50 mm bore if you need more thrust than the 40 mm bore (628 N push at 0.5 MPa) but want to avoid the larger footprint and higher air consumption of a 63 mm cylinder (1559 N push). The 30 mm adjustment range is ideal for applications requiring variable end-stops or fine-tuning during machine setup and product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot provide. Because the total stroke is 105 mm, side-loading is minimal, though an external guide remains recommended for any unsupported lateral loads.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 105 mm stroke, 30 mm adjustment range, PT tapered port threads, and the -S magnet requirement. The SAIJ series utilizes a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Remember that the rear adjuster is a travel stop, not a brake; for true load-holding without live air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants.
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 SAIJ50BX105-30S FAQ
At a standard operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At its maximum rated pressure of 1.0 MPa, it can deliver up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 105 mm stroke by up to 30 mm, creating a usable travel window of 75-105 mm. It is a stop for fine-tuning end-positions, not a lock, and will not hold the load without live air pressure.
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