Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-50 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 SAIJ63X850-50
The AirTAC SAIJ63X850-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 1559N of pull force at 0.5MPa through a 20mm carbon steel rod with an M16x1.5 thread. The integrated rear screw allows you to fine-tune the effective travel window down from the 850mm nominal stroke to a 800mm minimum, providing a 50mm adjustment range for exact end-position calibration without external stops.
This extruded aluminum barrel design includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. With a PT G3/8 port and variable air cushions at both ends, it decelerates loads smoothly across its 30-800mm/s speed range. The rear adjuster acts purely as a travel stop, so it will not hold the load safely without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-50 |
|---|---|
| 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 SAIJ63X850-50
| 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 SAIJ63X850-50 Is Used
Machine Changeover
Dial in the 800-850mm travel window during product size changes without replacing the cylinder or adding external mechanical stops.
Long-Stroke Positioning
Pushes or pulls loads along an extended 850mm path, using the rear stopper to fine-tune the exact end position at commissioning.
End-Stop Calibration
Provides 50mm of rear adjustment to perfectly set the retract end-position for multi-variant production lines.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-50 the Right Cylinder?
Choose this 63mm bore adjustable-stroke model when your setup requires precise end-stop tuning during commissioning or product changeover, avoiding the need to physically swap a fixed-stroke SAI cylinder. If your application demands less force, stepping down to a 50mm bore yields 825N of pull at 0.5MPa; stepping up to an 80mm bore provides 2268N. Because the 850mm stroke is long, an external guide is recommended to prevent excessive rod side-loading. To replace an ISO 15552 cylinder, match the 63mm bore, 850mm stroke, 50mm adjustment, PT G3/8 port, and mounting from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ63X850-50 FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective stroke from 850mm down to 800mm, creating a 50mm adjustable travel window. It is a stop, not a lock, and will not hold the load without live air pressure.
At 0.5MPa it provides 1559N of pull force and 1402N of push force. At 0.7MPa, the push force increases to 2182N.
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 SAIJ63X850-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.