Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30
The AirTAC SAIJ100X145-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 115-145 mm window without adding external stops. It delivers a robust 3927 N push force at 0.5 MPa, making it well-suited for moving heavy fixtures. This configuration includes a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered ports.
The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure; for dead-load holding, consider the SAIL or BSAI series. This model features a 25 mm rod and M20x1.5 thread, providing high rigidity against side loads. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAIJ100BX145-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100BX145-30 Is Used
Machine Changeover
Dial in the exact 115 to 145 mm travel needed when switching a production line to a new product size, avoiding physical cylinder swaps.
End-Position Tuning
Fine-tune the retract stop during commissioning to perfectly seat heavy components without machining external stop blocks.
Heavy Fixture Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy machining fixtures, using the rear screw to dial in the final resting position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-30 the Right Cylinder?
Choose this 100 mm bore when the 80 mm bore (2513 N push at 0.5 MPa) is insufficient, or step down if the 63 mm bore (1559 N) is enough. An adjustable stroke is selected over a fixed SAI when you need variable end-stops for product changeovers or precise commissioning tuning. To replace an ISO 15552 cylinder, match the 100 mm bore, 145 mm stroke, 30 mm adjustment, PT port, and mounting style. Since the stroke is under 300 mm, side-load risks are moderate, but always guide the load for optimal bearing life.
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 SAIJ100BX145-30 FAQ
At an operating pressure of 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw lets you shorten the 145 mm nominal stroke by up to 30 mm, creating a usable travel window of 115 to 145 mm. This mechanical stop sets the end position but does not lock the load without live air pressure.
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