Airtac SAIJ50 Adjustable Cylinder SAIJ50BX165-100
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX165-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 165mm 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
- Stroke165 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 SAIJ50BX165-100
The AirTAC SAIJ50X165-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 165 mm travel back by up to 100 mm, yielding a usable window of 65 to 165 mm. Built with a SUS304 stainless steel rod and PT tapered ports, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa. This bore size uses a 20 mm rod and M16x1.5 thread, providing a robust interface that handles moderate side loads well.
Unlike a fixed-stroke SAI, this adjustable variant lets you dial in the exact retract end-position during commissioning or product changeovers without swapping the cylinder or adding external stops. The rear adjuster acts purely as a mechanical travel stop to set the end position and works alongside the variable air cushions at both ends; it is not a lock and cannot hold a load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for adding CMSE reed or DMSE electronic switches if needed.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX165-100 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX165-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 165 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 SAIJ50BX165-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×165 | 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 SAIJ50BX165-100 Is Used
Variable End-Stop Setup
Dial in the retract position from 65 to 165 mm during machine commissioning to hit the exact stroke needed for a new fixture without machining new spacers.
Product Size Changeover
Quickly adjust the travel window on a packaging line when switching to a different carton size, using the 100 mm trim range to accommodate varying product lengths.
Clamp Position Tuning
Fine-tune the clamping reach on an assembly press by turning the rear adjuster, ensuring the 982 N force is applied at the precise depth required.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX165-100 the Right Cylinder?
Choose this 50 mm bore when your application requires the 982 N push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N, or stepping down from a 63 mm bore delivering 1559 N. The 100 mm adjustment range is ideal for machinery that processes varying product sizes, allowing operators to reposition the retract stop quickly. For load-holding without continuous air pressure, this cylinder is insufficient as the adjuster is only a stop; consider the SAIL or BSAI series, or use an external pilot-operated check valve.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders. The correct mounting set for this SAIJ model includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the 165 mm stroke is under the 300 mm threshold, side-load stress is manageable, but long unsupported strokes still require an external guide.
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 SAIJ50BX165-100 FAQ
At 0.5 MPa operating pressure, the 50 mm bore provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw mechanically stops the piston before the standard 165 mm end cap, allowing you to shorten the effective travel down to 65 mm. It functions as an end-position stop, not a load-holding lock.
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