Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S
The AirTAC SAIJ100X275-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 245 to 275 mm usable travel window, allowing you to dial back the nominal 275 mm stroke by up to 30 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa (7068 N at 0.9 MPa), it handles heavy loads with precision.
This variant features a standard carbon steel piston rod and a built-in magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic solid-state switches. The extruded aluminum barrel includes sensor grooves on both sides, and the rear stopper acts purely as a travel end deceleration device, not a load-holding lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100X275-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SAIJ100X275-30S Is Used
Machine Changeover
Dial in the 245-275 mm travel window during product size transitions to set new end stops without physically remounting the actuator.
Variable End-Stop Positioning
Fine-tune the retraction point on a heavy conveyor diverter where the exact package stop location needs on-site calibration.
Heavy Assembly Pressing
Leverage the 7068 N push force at 0.9 MPa to seat large components, using the rear screw to precisely set the pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-30S the Right Cylinder?
Selecting this 100 mm bore cylinder makes sense when your application requires substantial thrust—such as the 3927 N push force at 0.5 MPa—but still demands exact end-position tuning. If your process needs less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. Choose this adjustable SAIJ model over a fixed-stroke SAI when you need variable end stops for product changeovers without swapping the entire cylinder.
Because the nominal stroke is 275 mm, you should use an external guide to prevent excessive side loading on the rod. For holding loads without live air pressure, the rear adjuster and air cushions will not secure the load; you must integrate an external rod lock or pilot-operated check valve. To match this ISO 15552 replacement exactly, specify: 100 mm bore, 275 mm stroke, 30 mm adjustment, PT tapered G1/2 port, and the -S magnet option.
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 SAIJ100X275-30S FAQ
The rear adjuster screw lets you mechanically shorten the effective stroke by up to 30 mm, providing a usable travel window of 245 to 275 mm. It acts as a physical stop to fine-tune the end position without changing the cylinder mounting.
At 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
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