Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 220mm 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.
- BoreØ40 mm
- Stroke220 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S
The AirTAC SAIJ40X220-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the travel by up to 50 mm. This creates a usable stroke window of 170 to 220 mm, enabling precise end-position tuning at commissioning without swapping out the cylinder or adding external stops. It delivers 628 N of push force at 0.5 MPa and 1130 N at 0.9 MPa, making it a robust choice for moderate-thrust tasks.
This unit is configured with a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting. It uses a PT tapered G1/4 port and offers variable air cushioning at both ends to decelerate the load smoothly.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 220 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×220 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX220-50S Is Used
Machine Setup Tuning
Fine-tune the 170-220 mm travel window during commissioning to dial in exact end positions without machining external stop blocks.
Product Changeover
Quickly adapt the stroke on packaging lines when switching between different product sizes, reducing downtime between runs.
Variable End Stops
Use the rear adjuster to set precise retract positions for clamping or pressing tasks that require flexible travel limits.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-50S the Right Cylinder?
Choose this 40 mm bore when you need more force than the 32 mm version (which provides 402 N at 0.5 MPa) but want a more compact footprint than the 50 mm option (982 N at 0.5 MPa). The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers on a line. For an exact ISO 15552 replacement, match the 40 mm bore, 220 mm stroke, 50 mm adjustment, PT G1/4 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mountings.
The rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure. If your application requires true load-holding, consider the SAIL or BSAI series instead. Since the 220 mm stroke is relatively long, ensure you provide an external guide to prevent excessive side-loading on the rod.
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 SAIJ40 Adjustable Cylinder SAIJ40BX220-50S FAQ
At 0.5 MPa it provides 628 N of push force and 528 N of pull force. At 0.9 MPa, the push force increases to 1130 N.
The rear adjuster screw lets you shorten the 220 mm nominal stroke by up to 50 mm, giving an effective travel range of 170 to 220 mm for precise end-position tuning.
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 SAIJ40 Adjustable Cylinder SAIJ40BX220-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.