Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 850mm 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
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S
The AirTAC SAIJ63X850-10-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 840 to 850 mm, allowing you to dial back the nominal 850 mm stroke by up to 10 mm during commissioning without adding external stops. This 63 mm bore generates 1559 N of push thrust at 0.5 MPa, scaling up to 2182 N at 0.7 MPa.
Equipped with a carbon steel rod and a -S magnet, it supports AirTAC CMSE reed and DMSE electronic sensors via the dual-side extruded barrel grooves. Because the 850 mm stroke is long, the 20 mm rod and M16x1.5 thread will still experience leverage forces, making an external guide rail essential to prevent side-load wear. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 850 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 SAIJ63X850-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×850 | 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 SAIJ63X850-10S Is Used
End-Position Tuning
Dial in the exact retract end-stop within the 840-850 mm window during machine commissioning to compensate for mechanical tolerances.
Product Changeover
Quickly adjust the stroke by up to 10 mm on the line when swapping product sizes, avoiding the need to physically swap out the entire cylinder.
Long-Stroke Assembly
Drive large format fixtures with 1559 N of force at 0.5 MPa while relying on the external adjuster to fine-tune the final clamping position.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-10S the Right Cylinder?
Choose this adjustable-stroke model when a fixed SAI cylinder cannot accommodate minor mechanical variances or product changeovers, as the 10 mm rear screw allows precise end-stop tuning on the fly. If your application requires less force, stepping down to a 50 mm bore yields 982 N of push at 0.5 MPa, but the 63 mm bore is preferred for heavier 1559 N loads. For load-holding without continuous air pressure, this plain SAIJ is insufficient; you should look at the SAIL or BSAI series instead.
To match this ISO 15552 replacement exactly, specify: 63 mm bore, 850 mm stroke, 10 mm adjustment, PT tapered port threads, the -S magnet option, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Given the 850 mm length, always pair it with an external guide to protect the rod from side-load damage.
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 SAIJ63X850-10S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push thrust and 1402 N of pull thrust. If you increase the operating pressure to 0.7 MPa, the push force rises to 2182 N.
The rear adjuster screw lets you shorten the effective travel from the nominal 850 mm down to 840 mm. It acts as a mechanical stop to fine-tune the end position and does not lock or hold the load without continuous air pressure.
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