Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75
The AirTAC SAIJ63X350-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a usable 275-350 mm end-position window, letting you dial in exact retract distances during commissioning without swapping out the barrel or adding external stops. It delivers a solid 1559 N pull force at 0.5 MPa, making it well-suited for medium-force handling tasks.
This SKU is configured with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. It uses PT tapered ports sized at G3/8 and runs at speeds of 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later. Mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting the FB, CA, CB, and CR styles.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 350 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 SAIJ63AX350-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×350 | 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 SAIJ63AX350-75 Is Used
Machine Changeover
Dial in the exact retract position from 275 to 350 mm when switching a production line between different product sizes.
End-Stop Tuning
Fine-tune the final end-position during commissioning without machining external stop blocks or changing the cylinder.
Variable Diverter
Adjust the actuation distance of a sorting arm on the fly to accommodate packages of varying widths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75 the Right Cylinder?
Choose this 63 mm bore when you need more thrust than a 50 mm cylinder (which provides 825 N pull at 0.5 MPa) but want to avoid the bulk of an 80 mm unit. The adjustable stroke is ideal for product changeovers on a line where the exact retract end-stop varies by part size. Because the 350 mm stroke is relatively long, you should use an external guide to support the load and prevent side-loading damage to the rod seals.
When specifying a replacement, match the 63 mm bore, 350 mm nominal stroke, 75 mm adjustment range, PT G3/8 port, and the standard mounting set. Keep in mind that the rear adjuster acts only as a travel stop, not a lock; this plain SAIJ cylinder will not hold its load without live air pressure. For true fail-safe load holding, look to the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
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 SAIJ63AX350-75 FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa, it can deliver up to 318 kgf.
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the 350 mm nominal stroke by up to 75 mm. This provides a usable travel window of 275 to 350 mm for fine-tuning the retract end position.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.