Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30
The AirTAC SAIJ100X550-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927 Newtons of push force at 0.5 MPa, stepping up to 7068 Newtons at 0.9 MPa. The built-in rear stopper screw allows you to trim the nominal 550 mm travel back by up to 30 mm, creating a precise 520-550 mm usable window for commissioning.
This variant uses a SUS304 stainless steel rod (code B) for superior corrosion resistance and ships with PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for position holding, consider a SAIL or BSAI series cylinder.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 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 SAIJ100BX550-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100BX550-30 Is Used
Machine Setup & Changeover
Fine-tune the 520-550 mm end position during product line changeovers without replacing the entire cylinder or adding external mechanical stops.
Variable End-Stop Positioning
Dial in the exact retraction point on packaging lines or testing fixtures where the target position varies slightly between production runs.
Heavy-Duty Actuation
Leverage the 7068 N push force at 0.9 MPa to move heavy pallets or tooling, using the adjustable stop to safely limit the travel window.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-30 the Right Cylinder?
Choose this 100 mm bore when a 80 mm bore (2513 N push at 0.5 MPa) is insufficient, but a 125 mm unit (6136 N) would be excessive. The adjustable 520-550 mm window is ideal for fine-tuning end positions during machine setup or product changeover, eliminating the need to swap cylinders or bolt on external stops. Because the stroke is 550 mm, the 25 mm rod handles side loads well, but an external guide rail is still recommended for long unsupported travel. This SAIJ model uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
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 SAIJ100BX550-30 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw lets you shorten the 550 mm nominal stroke by up to 30 mm, providing a usable travel window of 520-550 mm. The adjuster acts as a stop and does not lock the load without live air pressure.
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Standard models usually ship in 3-4 days.
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