Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 135mm 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
- Stroke135 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 SAIJ50AX135-40S
The AirTAC SAIJ50X135-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 95-135 mm usable travel window. Delivering 982 N of push force at 0.5 MPa, it integrates a magnetic piston for position sensing and uses a SUS420J2 stainless steel rod for improved corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Equipped with a PT tapered G1/4 port, this unit operates at speeds between 30-800 mm/s and utilizes adjustable air cushions at both ends to dampen impact. The rear stopper allows precise end-position tuning during commissioning without adding external stops, acting solely as a travel limiter rather than a load-holding lock.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 135 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 SAIJ50AX135-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SAIJ50AX135-40S Is Used
Machine Changeover
Dial in the exact end-stop during product size changes without swapping out the entire cylinder or adding external mechanical stops.
Sensor-Driven Positioning
Utilize the built-in magnet with CMSE reed and DMSE electronic sensors to confirm travel endpoints across the 95-135 mm range.
Assembly Calibration
Fine-tune the clamping travel during commissioning to perfect part fitment, relying on the SUS420J2 rod for durable performance.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S the Right Cylinder?
Choose this 50 mm bore when an application requires 982 N push force at 0.5 MPa but might need to step up to the 63 mm bore (1559 N) if the load increases. The 40 mm adjustment window is ideal for product changeovers, letting you dial back the 135 mm nominal stroke to a 95 mm minimum position on the fly. For load-holding without live air pressure, select a SAIL or BSAI cylinder instead, as the rear adjuster here is a stop, not a lock. Because the stroke is under 300 mm, side-load stress on the M16x1.5 rod thread is minimal, though external guides are still recommended for heavy lateral loads. This unit is dimensionally interchangeable per ISO 15552 mounting-interface dimensions and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ50AX135-40S FAQ
The SAIJ50X135-40-S features a rear adjusting screw that allows you to shorten the effective stroke by up to 40 mm, providing a usable travel window of 95-135 mm. The adjuster acts as a mechanical stop to fine-tune the end position and does not hold the load without live air pressure.
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. The included magnet (-S) is compatible with AirTAC CMSE reed switches and DMSE solid-state electronic sensors mounted in the dual-side barrel grooves.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.