Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-100 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 SAIJ63X850-100
The AirTAC SAIJ63X850-100 is a double-acting, single-rod ISO 15552 profile cylinder engineered for applications requiring exact end-position tuning. Equipped with a rear adjusting screw, this model allows you to dial back the 850 mm nominal stroke by up to 100 mm, creating a precise 750-850 mm usable travel window without swapping out the actuator. It delivers a robust 1559 N push force at 0.5 MPa, making it suitable for medium-duty handling tasks.
This extruded aluminum profile cylinder features sensor grooves on both sides for straightforward positioning feedback. It uses a G3/8 port and a 20 mm carbon steel rod with an M16x1.5 thread. The rear stopper acts purely as a travel limit and relies on the integrated adjustable air cushions for end-of-stroke deceleration; it does not function as a load lock when air pressure is removed.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-100 |
|---|---|
| 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 SAIJ63X850-100
| 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 SAIJ63X850-100 Is Used
Product Size Changeovers
Quickly modify the 750-850 mm travel endpoint during production line format changes without disassembling machinery or replacing the actuator.
Commissioning Calibration
Fine-tune the final extended position during initial machine setup to achieve perfect alignment, using the rear screw to absorb mechanical tolerances.
Variable End-Stop Positioning
Accommodate different package lengths on a transfer line by adjusting the retract stroke limit on the fly to meet changing operational needs.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X850-100 the Right Cylinder?
Selecting this 63 mm bore actuator over a smaller 50 mm option (which provides 982 N push at 0.5 MPa) is ideal when your process demands higher thrust. The adjustable stroke is specifically beneficial during machine commissioning or product changeovers, allowing operators to fine-tune the 750-850 mm travel window on the fly instead of machining external stops or reverting to a fixed-stroke SAI cylinder.
For an exact ISO 15552 replacement, match the 63 mm bore, 850 mm stroke, 100 mm adjustment, G3/8 PT port, and your required mounting style. Because the stroke is 850 mm, the unsupported 20 mm rod is susceptible to side-loading; always utilize an external guide rail to prevent binding. Note that the rear adjuster cannot hold a load without live air—if load-holding is required for safety, consider an external pilot-operated check valve or a SAIL locking cylinder.
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 SAIJ63X850-100 FAQ
The rear adjusting screw acts as a mechanical stopper that trims the effective travel. For this model, you can shorten the 850 mm nominal stroke by up to 100 mm, providing a usable travel window of 750 to 850 mm to fine-tune the end position.
At 0.5 MPa operating pressure, the SAIJ63X850-100 provides 1559 N of push force and 1402 N of pull force. It can reach up to 2182 N push force at 0.7 MPa.
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