Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ63 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S
The AirTAC SAIJ63X185-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the travel by up to 100 mm. This creates a highly flexible usable-travel window of 85 to 185 mm, letting you fine-tune the retract end-position at commissioning without swapping out the barrel or adding external stops. It delivers a robust 1559 N pull force at 0.5 MPa and 2182 N push at 0.7 MPa.
This variant is equipped with a -S magnet for position sensing, compatible with AirTAC CMSE reed and DMSE solid-state switches that seat directly into the dual-side sensor grooves on the extruded aluminum barrel. It uses a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features a G3/8 port with PT tapered threading. The rear adjuster acts purely as a mechanical stop to set deceleration, so it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance from 85 to 185 mm during machine commissioning to perfectly match new product lengths without external spacers.
Product-Size Changeovers
Rapidly adapt the effective stroke on packaging lines when switching between different package dimensions, minimizing downtime between runs.
Sensor-Ready Positioning
Leverage the built-in magnet and dual sensor grooves to mount CMSE or DMSE switches for precise end-of-stroke confirmation in automated assembly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S the Right Cylinder?
Choose this 63 mm bore when your application needs around 1559 N pull force at 0.5 MPa but requires significant travel flexibility; stepping down to a 50 mm bore drops the pull force to 825 N, while an 80 mm bore jumps to 2268 N. The 100 mm adjustment range is ideal for machines handling frequent product-size changeovers, replacing the need to stock multiple fixed-stroke SAI cylinders. Because the adjuster is a stop and not a lock, load-holding without live pressure requires a SAIL or BSAI variant. To match this ISO 15552 cylinder, specify: 63 mm bore, 185 mm stroke, 100 mm adjust, G3/8 PT port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a -S magnet.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-100S FAQ
At 0.5 MPa, it provides 1559 N push and 1402 N pull. At 0.7 MPa, the push force increases to 2182 N, and it reaches a maximum of 318 kgf (about 3118 N) at 1.0 MPa.
A rear external stopper screw lets you mechanically shorten the nominal 185 mm stroke by up to 100 mm, providing an adjustable travel window of 85 to 185 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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