Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 300mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S
The AirTAC SAIJ32X300-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 250-300 mm usable travel window, allowing you to dial back the 300 mm nominal stroke by up to 50 mm during commissioning. Delivering 402 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and features a magnetic piston for CMSE and DMSE sensors.
This extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The M10x1.25 rod thread and 12 mm rod diameter handle moderate side loads, though the 300 mm stroke length means an external guide is recommended for heavy lateral forces. It uses PT tapered port threads (G1/8) and offers adjustable air cushions at both ends to protect end-of-stroke impacts.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×300 | 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 Adjustable Cylinder SAIJ32 SAIJ32BX300-50S Is Used
Product Changeovers
Quickly adjust the end-of-stroke position up to 50 mm to accommodate varying package lengths on a packaging line without changing the cylinder.
Machine Commissioning
Fine-tune the final retract position during setup to dial in exact clamping distances, avoiding the need for machined spacer plates.
Variable End Stops
Set precise travel limits for testing or light assembly operations where the effective stroke needs periodic adjustment within the 250-300 mm window.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX300-50S the Right Cylinder?
Choose this 32 mm bore when 402 N of thrust at 0.5 MPa is sufficient, stepping down from a 40 mm bore that yields 628 N if you need to save space and actuator mass. The 50 mm rear adjuster is selected over a fixed-stroke SAI when a machine setup requires variable end-stops or product-size changeovers without physically swapping cylinders or adding external stops. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). For exact ISO 15552 replacement matching, verify the 32 mm bore, 300 mm stroke, 50 mm adjustment, PT G1/8 port, and the -S magnet. Because the stroke is 300 mm, ensure an external guide supports the load to prevent rod binding.
Remember that the rear adjuster acts only as a travel stop to set deceleration, not as a lock. A plain SAIJ cylinder does not hold its load or position without live air pressure. If your application requires true load-holding without continuous air supply, consider the SAIL (air-released lock) or BSAI (clamp-lock) 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 Adjustable Cylinder SAIJ32 SAIJ32BX300-50S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it delivers 82 kgf. It operates at speeds between 30 and 800 mm/s within a temperature range of -20 to +70 C.
An external adjusting screw at the rear of the cylinder acts as a mechanical stop, allowing you to shorten the effective travel from 300 mm down to 250 mm. This adjuster sets the end position and works with the air cushions to manage deceleration, but it does not lock the load without live air pressure.
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