Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 200mm 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
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75
The AirTAC SAIJ63X200-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 125 to 200 mm window. Delivering 1559 N of push force at 0.5 MPa, it handles demanding positioning tasks while using a PT G3/8 port and a 20 mm SUS420J2 stainless steel rod. This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during machine commissioning.
The rear adjuster functions strictly as a travel stop to set the retract end-position, not as a locking device, meaning it cannot hold a load without live air pressure. Built on an extruded aluminum barrel with sensor grooves on both sides, it supports AirTAC CMSE reed and DMSE electronic sensors if a magnet is added later. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAIJ63AX200-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SAIJ63AX200-75 Is Used
Product Changeover Lines
Quickly dial the retract stop back by up to 75 mm to accommodate new package sizes on a conveyor without replacing the cylinder.
Machine Commissioning
Fine-tune the final end-of-stroke position during setup to perfectly time the 1559 N push force against mechanical stops.
Adjustable End-Stop Tooling
Use the 125 to 200 mm travel window to vary the clamping depth on modular fixtures without disassembling the pneumatic circuit.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX200-75 the Right Cylinder?
Choose this 63 mm bore when 50 mm falls short (982 N push at 0.5 MPa) but 80 mm is excessive (2513 N push). The 75 mm adjustment range is ideal for product-size changeovers on a line, letting you dial in a new end-stop without hardware swaps. For load-holding without continuous air, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead, as the SAIJ adjuster only decelerates the stroke.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard SAI mounting footprints. To replicate this exact unit, specify a 63 mm bore, 200 mm stroke, 75 mm adjustment, PT G3/8 port, SUS420J2 rod, and no magnet. Because the 200 mm stroke is significant, ensure external guides support any side loads to protect the rod and thread.
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 SAIJ63AX200-75 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can reach up to 2805 N push at 0.9 MPa.
The rear adjuster screw lets you shorten the 200 mm nominal stroke by up to 75 mm, creating a usable travel window of 125 to 200 mm. It acts as a physical stop for end-position tuning and does not lock the load without live air.
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