Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 135mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke135 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50
The AirTAC SAIJ100X135-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 85 to 135 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning without swapping the cylinder or adding external stops. In the 100 mm bore class, it delivers a robust 5497 N push force at 0.7 MPa.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and uses a PT tapered port thread. The rear adjuster acts as a travel stop to set the retraction end position, but it does not hold the load without live air. For position holding without pneumatic pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×135 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX135-50 Is Used
Machine Setup Tuning
Dial in the exact retraction end-stop during initial machine commissioning without machining custom spacers.
Product Size Changeover
Quickly adapt the stroke window from 85 to 135 mm on packaging lines handling varying container sizes.
Clamp Position Adjustment
Fine-tune the clamping travel on stainless steel workpieces where a fixed 135 mm stroke would over-compress.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50 the Right Cylinder?
Choose this 100 mm bore adjustable cylinder when your application requires 5497 N of push force at 0.7 MPa and precise end-position tuning. If your changeover demands less force, stepping down to a 63 mm bore yields 2182 N at 0.7 MPa. The adjustable stroke is ideal for product-size changeovers on a line, whereas a fixed SAI cylinder is preferred when the travel end is absolute and never varies.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 135 mm stroke, 50 mm adjustment range, PT port thread, and SUS304 rod material. Note that SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since the stroke here is under 300 mm, standard side-load risks are minimal, but long unsupported loads still need 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 SAIJ100 Adjustable Cylinder SAIJ100BX135-50 FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. At 0.9 MPa, the push force reaches 7068 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 135 mm down to 85 mm, creating a 50 mm adjustable window. This stopper sets the retraction end position but does not lock or hold the load without continuous air pressure.
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