Airtac SAIJ50 Adjustable Cylinder SAIJ50X185-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50X185-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 185mm 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
- Stroke185 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 SAIJ50X185-50
The AirTAC SAIJ50X185-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push thrust and 825N of pull thrust at 0.5 MPa. By turning the rear stopper screw, you can dial back the nominal 185mm travel by up to 50mm, creating a precise 135-185mm usable stroke window without swapping out the barrel.
This 50mm bore unit features a 20mm carbon steel rod and M16x1.5 rod threading, offering solid resistance to side loads. It uses PT tapered port threads (G1/4) and includes variable air cushions at both ends to decelerate the moving piston. The extruded aluminum barrel omits tie-rods and carries sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ50 Adjustable Cylinder SAIJ50X185-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50X185-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAIJ50X185-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SAIJ50X185-50 Is Used
Product Changeovers
Quickly reposition the retract end-stop by up to 50mm to accommodate varying package lengths on a packaging line without changing the cylinder.
End-Position Tuning
Dial in the exact 135-185mm travel distance during machine commissioning to perfect mating alignment without adding external shims.
Adjustable Diverter
Set a precise stroke limit for a conveyor sorting arm, allowing the retract position to be fine-tuned to the exact product width.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50X185-50 the Right Cylinder?
Choose this 50mm adjustable model when your machine setup requires fine-tuning the retract end-position during commissioning or accommodating product-size changes on a line. If your application needs less force, stepping down to a 40mm bore yields 628N push at 0.5 MPa; stepping up to a 63mm bore provides 1559N. The rear adjuster acts purely as a travel stop and cannot hold a load without live air pressure—use an AirTAC SAIL or BSAI cylinder for fail-safe load holding.
To match this ISO 15552 cylinder for a direct replacement, specify the 50mm bore, 185mm stroke, 50mm adjustment range, PT port threads, and your preferred mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because this specific SKU lacks the -S magnet suffix, it will not trigger position switches without physical modification.
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 SAIJ50X185-50 FAQ
A rear stopper screw lets you shorten the nominal 185mm stroke by up to 50mm. This provides an adjustable travel window of 135 to 185mm so you can set the exact retract end-position at commissioning.
At 0.5 MPa operating pressure, it provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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