Airtac SAIJ50 Adjustable Cylinder SAIJ50BX155-75
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX155-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 155mm 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
- Stroke155 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 SAIJ50BX155-75
The AirTAC SAIJ50X155-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 155 mm travel by up to 75 mm. This creates a highly flexible 80-155 mm usable travel window, perfect for dialing in exact end positions during machine commissioning. It delivers 982 N of push thrust at 0.5 MPa, making it a solid mid-range choice for moderate loads.
This specific configuration features a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. While it lacks a standard magnet, the rear adjuster acts purely as a travel stop to set deceleration, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX155-75 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX155-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 155 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 SAIJ50BX155-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×155 | 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 SAIJ50BX155-75 Is Used
Product Changeovers
Quickly shift the end position by up to 75 mm when running different sized products on the same conveyor line, minimizing downtime between batches.
Machine Commissioning
Fine-tune the 80-155 mm travel window during initial setup to hit exact registration marks without machining new hard stops.
Corrosive Environments
Leverage the SUS304 stainless steel rod for packaging or food-grade applications where moisture resistance is critical.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX155-75 the Right Cylinder?
Choose this 50 mm bore when you need more force than a 40 mm cylinder (628 N at 0.5 MPa) but want a smaller footprint than a 63 mm unit (1559 N). The generous 75 mm adjustment range is ideal for product changeovers on a line, letting you shift the end-stop dynamically rather than physically swapping out a fixed-stroke SAI cylinder. To replace an ISO 15552 cylinder, match the 50 mm bore, 155 mm stroke, PT port thread, and your required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Because the nominal stroke is 155 mm, side-load stress is manageable, but always ensure proper guiding for the load. Remember that the rear adjuster is a stop, not a locking mechanism; if you need true load-holding without live air, consider the SAIL or BSAI series instead.
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 SAIJ50BX155-75 FAQ
The rear adjuster screw lets you shorten the effective travel from the nominal 155 mm down to as little as 80 mm, giving you a 75 mm tuning window to set the exact retract end position.
At a standard 0.5 MPa operating pressure, it provides 982 N of push thrust and 825 N of pull thrust. At 0.7 MPa, the push force increases to 1374 N.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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