Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S
The AirTAC SAIJ63X165-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 165 mm stroke that can be dialed back by up to 40 mm, yielding a usable travel window of 125 to 165 mm for precise end-position tuning at commissioning. In the 63 mm bore class, it delivers 1559 N of pull force at 0.5 MPa and up to 2805 N of push force at 0.7 MPa.
This variant features a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and fluid is supplied via PT tapered G3/8 ports. The rear adjustment screw acts strictly as a travel stop to decelerate the piston, not as a lock to hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 165 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 SAIJ63AX165-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×165 | 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 SAIJ63AX165-40S Is Used
Changeover Calibration
Dial in the 125 to 165 mm stroke window during machine changeovers to accommodate different product lengths without replacing the cylinder.
End-Stop Trimming
Fine-tune the retract end-position during commissioning using the rear screw, preventing hard mechanical crashes on critical tooling.
Position Sensing
Leverage the integrated magnet with DMSE electronic sensors to confirm rod extension across the adjusted travel range in automated cells.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40S the Right Cylinder?
Choose this 63 mm bore cylinder when an application requires 1559 N pull force at 0.5 MPa but demands variable end-stops for product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your setup requires less force, stepping down to a 50 mm bore yields 825 N of pull force; if more force is needed, an 80 mm bore provides 2268 N. To replace an ISO 15552 cylinder, match the 63 mm bore, 165 mm stroke, 40 mm adjustment range, G3/8 PT ports, and the -S magnet requirement.
Because the 165 mm stroke is under the 300 mm threshold, external side-load guides are less critical than on longer strokes, though the 20 mm rod diameter and M16x1.25 thread still handle moderate side loads well. For applications requiring true load-holding without continuous air pressure, note that this cylinder's adjuster is not a brake—consider an AirTAC SAIL pneumatic lock, BSAI clamp-lock, or an external pilot-operated check valve instead. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ63AX165-40S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. At 0.7 MPa, the push force increases to 2805 N.
The rear adjuster acts as a mechanical stop that shortens the effective travel from the 165 mm nominal stroke down to as little as 125 mm. It decelerates the piston at the retract end but does not lock the load without live air pressure.
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 SAIJ63AX165-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.