Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S
The AirTAC SAIJ63X155-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 155 mm travel by up to 75 mm. This yields a highly flexible 80-155 mm usable travel window, perfect for dialing in exact end positions during commissioning without swapping hardware. It delivers a robust 1559 N push force at 0.5 MPa (or 2182 N at 0.7 MPa), making it suitable for medium-duty handling.
This SKU features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance over standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports position detection using AirTAC CMSE reed or DMSE electronic solid-state switches. It uses a PT tapered G3/8 port and offers variable air cushions at both ends to manage end-of-stroke impacts.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAIJ63AX155-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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 SAIJ63AX155-75S Is Used
Variable End-Stop Positioning
Ideal for assembly stations where the retract distance must be adjusted between 80 and 155 mm to accommodate different part heights without changing the cylinder.
Machine Changeover Setup
Speeds up product line changeovers by allowing operators to fine-tune the stroke end-position via the rear screw instead of adding external mechanical stops.
Medium-Force Clamping
Provides 1559 N of clamping force at 0.5 MPa, with the adjustable travel window ensuring parts are held securely at varying depths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-75S the Right Cylinder?
Choose this 63 mm bore when your application requires the 1559 N output at 0.5 MPa; stepping down to a 50 mm bore drops the force to 982 N, while upgrading to an 80 mm bore increases it to 2513 N. The 75 mm adjustment range is ideal for machines that process varying product sizes, letting operators fine-tune the retract stop on the fly. For strokes of 155 mm, the 20 mm diameter rod provides good rigidity, but always rely on an external guide for heavy lateral loads.
When specifying a replacement, ensure you match the 63 mm bore, 155 mm nominal stroke, 75 mm adjustment range, PT G3/8 port, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles found on some other ISO 15552 variants. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true drop-pressure load holding, consider the AirTAC SAIL or BSAI series.
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 SAIJ63AX155-75S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm from the nominal 155 mm, creating an 80-155 mm usable travel window. It acts as a mechanical stop to fine-tune the retract position and works alongside the standard air cushions.
At 0.5 MPa operating pressure, the SAIJ63X155-75-S generates 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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