Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S
The AirTAC SAIJ100X500-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 425-500 mm, allowing you to dial back the nominal 500 mm stroke by up to 75 mm during commissioning without adding external stops. Equipped with a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual-side barrel grooves.
This size 100 bore generates 3927 N of push force and 3681 N of pull force at 0.5 MPa, utilizing a G1/2 PT tapered port and a 25 mm carbon steel rod with an M20x1.5 thread. The robust 25 mm rod handles high side loads well, though the 500 mm length still benefits from an external guide. It includes variable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SAIJ100X500-75S Is Used
Machine Setup & Changeover
Fine-tune the 425-500 mm travel window during line changeovers to accommodate different product sizes without physically swapping cylinders.
Variable End-Stop Positioning
Dial in the exact retract position using the rear adjuster screw, perfect for testing stroke limits and optimizing motion sequences at commissioning.
Heavy Load Deceleration
Leverage the 36 mm variable air cushions at both ends combined with the stopper to safely bring heavy 100 mm bore loads to rest over long strokes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-75S the Right Cylinder?
Choose this adjustable SAIJ model when your machine requires precise end-position tuning for product changeovers, stepping down from a bore 125 unit (6136 N push at 0.5 MPa) if you need less force, or up from a bore 80 unit (2513 N push) for higher thrust. The 75 mm adjustment window lets you set variable end-stops on the fly, which is far more efficient than swapping a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding without pressure, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder.
When matching an ISO 15552 replacement, verify your bore size, the 500 mm nominal stroke, the 75 mm adjustment range, G1/2 PT ports, and the -S magnet requirement. Supported SAIJ mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. For any 500 mm stroke application, always factor in an external guide to prevent rod binding under heavy side loads.
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 SAIJ100X500-75S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa, it can deliver up to 801 kgf.
The rear adjuster screw acts as an external stop, allowing you to shorten the effective stroke from 500 mm down to 425 mm. This creates a 75 mm adjustable window for fine-tuning end positions without replacing the cylinder. Note that this is a travel stop, not a lock, and cannot hold a load without live air pressure.
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