Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-75 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 SAIJ63AX185-75
The AirTAC SAIJ63X185-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 185 mm travel by up to 75 mm. This creates a highly flexible usable stroke window of 110 to 185 mm, letting you fine-tune the retract end-position at commissioning without swapping out the unit or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch mounting.
Belonging to the 63 mm bore class, it delivers a robust 2182 N of push force and 1402 N of pull force at 0.7 MPa. This specific SKU is configured with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance, and uses PT tapered port threads (G3/8). The 20 mm rod diameter and M16x1.5 rod thread provide a strong interface, but remember the adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-75 |
|---|---|
| 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 SAIJ63AX185-75
| 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 SAIJ63AX185-75 Is Used
Product Changeover
Dial in the retract stroke from 110 to 185 mm on the fly to accommodate different product lengths without changing the cylinder.
End-Position Tuning
Fine-tune the exact end-of-stroke position during machine commissioning to perfect the pickup or placement of a part.
Adjustable Stops
Use the rear stopper screw to set variable mechanical limits for delicate operations without adding external physical stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-75 the Right Cylinder?
Choose this 63 mm bore adjustable cylinder when your application requires variable end-stops during machine setup or product changeover. If you need less force, stepping down to a 50 mm bore yields 1374 N of push force at 0.7 MPa, while moving up to an 80 mm bore provides 3518 N for heavier payloads. Because the stroke is 185 mm (under 300 mm), side-load risks are moderate, but an external guide is still recommended for heavy off-center loads. To replace an ISO 15552 cylinder, match the 63 mm bore, 185 mm stroke, 75 mm adjustment, PT G3/8 port, and desired mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this unit lacks a magnet; for position detection you would need the -S variant with CMSE reed or DMSE electronic sensors. For load-holding without continuous air pressure, look to the SAIL or BSAI series 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 SAIJ63AX185-75 FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder provides 2182 N of push force and 1402 N of pull force. It can deliver up to 2805 N push at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel by up to 75 mm from the 185 mm nominal stroke, giving a usable window of 110 to 185 mm. It acts as a mechanical stop and does not lock the load without 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 SAIJ63AX185-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.