Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50S 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 SAIJ100BX135-50S
The AirTAC SAIJ100X135-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance. By turning the rear stopper screw, you can trim the effective travel down by up to 50 mm, creating a precise 85-135 mm usable stroke window without swapping out the hardware.
This adjustable nature is invaluable during machine commissioning or product-size changeovers, allowing you to fine-tune the retract end position on the fly. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes a magnet (-S), it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for exact position feedback. The rear adjuster acts purely as a mechanical stop for deceleration and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50S |
|---|---|
| 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 SAIJ100BX135-50S
| 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 SAIJ100BX135-50S Is Used
Product Size Changeovers
Leverage the 85-135 mm travel window to rapidly reconfigure end-stops when switching machinery between different product lengths on the same line.
Precision End-Tuning
Dial in the exact retract position during machine commissioning using the rear stopper, avoiding the need to machine external spacers for the 100 mm bore.
High-Force Positioning
Utilize the 3927N push force at 0.5 MPa to move and position heavy jigs or workpieces, relying on the SUS304 rod for durability in harsh environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX135-50S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, pushing 3927N at 0.5 MPa or 5497N at 0.7 MPa. If your force requirements are lower, stepping down to an 80 mm bore yields 2513N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136N. The 50 mm adjustment range is significantly larger than standard trim codes, making it ideal for lines running multiple product sizes where the end-stop frequently shifts. For fixed-position tasks without variation, a standard SAI cylinder is simpler.
To match this cylinder for an ISO 15552 replacement, confirm the 100 mm bore, 135 mm stroke, 50 mm adjustment, PT tapered port threads, and the -S magnet. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 135 mm, side-load is minimal, but always ensure the load is guided to prevent rod binding. Remember that neither the rear adjuster nor the air cushions function as a lock; for load-holding without live air, select an AirTAC SAIL or BSAI cylinder.
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 SAIJ100BX135-50S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927N of push force and 3681N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 5497N.
The rear adjuster screw allows you to mechanically shorten the nominal 135 mm stroke by up to 50 mm, providing an adjustable travel window of 85 to 135 mm. This stopper only sets the end position and does not lock the load without continuous air pressure.
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