Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 65mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S
The AirTAC SAIJ50X65-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel end. With a nominal 65 mm stroke and a 50 mm adjustment range, it provides a usable travel window of 15 to 65 mm. This bore delivers 982 N of push force at 0.5 MPa, making it well-suited for moderate load positioning.
This variant includes a SUS304 stainless steel rod (code B) and a built-in magnet for position sensing. It is designed to accept PT tapered port threads and works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors. The extruded aluminum barrel features sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×65 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX65-50S Is Used
Machine Changeover
Dial in the exact end position for new product sizes during line changeover using the 15-65 mm travel window, avoiding physical cylinder swaps.
Variable End Stops
Set precise retract positions on the fly for multi-format packaging lines, relying on the 50 mm adjustment screw to trim the 65 mm stroke.
Stainless Rod Assembly
Leverage the SUS304 stainless steel rod for light assembly tasks in environments where standard carbon steel rods might face moisture or corrosion.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX65-50S the Right Cylinder?
Choose this 50 mm bore when you need 982 N of push thrust at 0.5 MPa; stepping down to a 40 mm bore reduces that to 628 N, while moving up to a 63 mm bore increases it to 1559 N. The adjustable rear stopper is perfect for machine setup and product changeover, allowing you to shift the end position without swapping the cylinder or adding external stops. Because the adjuster acts as a travel stop and the air cushions only manage deceleration, this cylinder cannot hold a load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 50 mm bore, 65 mm stroke, 50 mm adjustment, PT G1/4 port, and -S magnet.
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 SAIJ50 Adjustable Cylinder SAIJ50BX65-50S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw acts as a mechanical stop that trims the effective stroke. For this SAIJ50X65-50-S, you can shorten the 65 mm nominal stroke by up to 50 mm, giving an adjustable travel window of 15 to 65 mm.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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