Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40
The AirTAC Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 is a genuine double-acting COMPACT cylinder (Ø50mm bore) whose extend end-position is set by an external M16×1.5 adjustment screw. You can dial the stroke anywhere from 25 to 65 mm on the machine — no shims, no part change.
- BoreØ50 mm
- Max stroke65 mm
- Adjustable range25–65 mm
- Adjuster threadM16×1.5
- Port sizePT1/4
- CushionFixed NBR bumper (both ends)
- 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 SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40
The AirTAC SDAJ50X65-40 is a compact double-acting single-rod cylinder featuring an external extend stop. A M16x1.5 adjuster screw lets you dial the outward stroke on the machine between 25 and 65 mm, removing the need for shims or part swaps during changeovers. Retract travel remains full length.
Because the adjuster sets the mechanical stop rather than altering the piston area, output force equals a standard 50 mm bore SDA. You get 981.7 N of push at 0.5 MPa. The short riveted body saves axial mounting depth where a round-body unit will not fit, and a fixed NBR bumper decelerates the stroke end. This SKU lacks a piston magnet, so it cannot host sensing switches.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 Technical Specifications
| Model | Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø50 mm |
| Max stroke | 65 mm |
| Adjustable range | 25 – 65 mm |
| Adjuster thread (R) | M16×1.5 |
| Port size | PT1/4 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M10×1.5 F / M18×1.5 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 40 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
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 | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 50 | Bore size in mm. |
| ×65 | Maximum stroke length in mm. |
| -40 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 Is Used
Machining Clamps
Dial the 25-65 mm extend stop to secure raw castings of varying widths against a fixture stop without machining custom spacers.
Carton Flap Folders
Fine-tune the push rod position on the fly for different box heights, using the 981.7 N force to neatly fold heavy corrugated flaps.
Palletizing Stops
Adjust the mechanical end-stop on-site to set precise layer heights for varied pallet loads, relying on the fixed NBR bumper for end deceleration.
Is the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 the Right Cylinder?
When sizing this 50 mm bore, check both neighbours. Dropping down to the SDAJ40 yields 628.3 N push at 0.5 MPa, while stepping up to the SDAJ63 provides 1558.6 N. This model provides a safe working load of roughly 589 N (about 60 percent of the 981.7 N figure), translating to a vertical lift capacity near 50 kg with a 2:1 safety margin.
Choose this unit if your fixture requires frequent extend-position tuning. It uses a PT1/4 port, a 20 mm rod with a female M10x1.5 thread, and operates at 30-500 mm/s. Note that a plain cylinder drifts when air is lost; the fixed bumper only decelerates near the end and is not a lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 25–65 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the M16×1.5 adjuster after setting the stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X65-40 FAQ
At 0.5 MPa this 50 mm bore cylinder provides 981.7 N push and 824.7 N pull. At 0.7 MPa it delivers 1374.4 N push and 1154.5 N pull. The theoretical maximum push is 200 kgf at 1.0 MPa.
Turning the M16x1.5 external screw shortens the extend stroke by up to 40 mm, allowing an outward reach between 25 and 65 mm. This SKU has no piston magnet (-S omitted), so it cannot accept reed or electronic switches.
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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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