Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S
The AirTAC SAIJ100X185-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 85 to 185 mm. It delivers a robust 3927 N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks. This variant features a SUS304 stainless steel rod and includes a magnet for position sensing.
The generous 100 mm adjustment range allows operators to dial in the exact retract end-position during commissioning or product changeovers without adding external stops. The extruded aluminum barrel incorporates sensor grooves on both sides, compatible with AirTAC CMSE reed and DMSE solid-state switches. The rear screw functions strictly as a travel stop to set deceleration, not as a lock to hold the load without air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 185 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 SAIJ100BX185-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×185 | 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 SAIJ100BX185-100S Is Used
Machine Changeover
Quickly reconfigure the retract distance by up to 100 mm when switching product sizes on a packaging line, eliminating the need to physically swap cylinders.
Precision End-Positioning
Fine-tune the final end-stop during commissioning to achieve exact mechanical positioning without relying on external shims or hard stops.
Heavy-Duty Clamping
Leverage the 3927 N push force at 0.5 MPa to securely hold heavy workpieces, while using the adjuster to accommodate varying part thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-100S the Right Cylinder?
Choose this 100 mm bore when your application requires higher thrust than the 80 mm bore (which provides 2513 N push at 0.5 MPa), but does not necessitate stepping up to the 125 mm class. The adjustable stroke is ideal for machines requiring variable end-stops, whereas a fixed-stroke SAI is better for dedicated, single-product setups. For load-holding without live air pressure, select a SAIL or BSAI cylinder instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 185 mm nominal stroke, 100 mm adjustment range, PT port thread, and the -S magnet option. Mounting choices include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Although this 185 mm stroke is under the 300 mm side-load threshold, the 25 mm rod and M20x1.5 thread provide excellent rigidity, but always guide external loads for smooth operation.
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 SAIJ100BX185-100S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides a push force of 3927 N and a pull force of 3681 N. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear adjuster screw allows you to shorten the 185 mm nominal stroke by up to 100 mm, creating an 85 to 185 mm usable travel window. This stopper sets the travel end and deceleration point but does not lock or hold the load without continuous air pressure.
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