Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-40B
The AirTAC Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-40B is a genuine double-acting COMPACT cylinder (Ø63mm bore) whose extend end-position is set by an external M16×1.5 adjustment screw. You can dial the stroke anywhere from 35 to 75 mm on the machine — no shims, no part change.
- BoreØ63 mm
- Max stroke75 mm
- Adjustable range35–75 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 SDAJ63X75-40B
The AirTAC SDAJ63X75-40B is a double-acting compact cylinder featuring an external M16x1.5 adjuster screw that dials the extend stop from 35 to 75 mm. Its short riveted body saves axial mounting depth where a round-body or profile cylinder will not fit, while delivering 1558.6 N of push force at 0.5 MPa.
This unit includes a male M18x1.5 piston rod thread and a fixed NBR bumper at each end to decelerate the stroke. The adjuster sets the mechanical stop position; it does not alter the bore area or the force output.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-40B Technical Specifications
| Model | Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø63 mm |
| Max stroke | 75 mm |
| Adjustable range | 35 – 75 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SDAJ63X75-40B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SDAJ63X75-40B Is Used
Machining Clamp Tuning
Dial the extend stop between 35 and 75 mm to fine-tune clamping depth on raw castings without machining custom spacers.
Variable Carton Flap Folding
Adjust the male M18x1.5 rod extension on the fly to accommodate different box heights during rapid packaging changeovers.
Z-Axis Press Positioning
Set the precise 935 N safe working load descent limit on assembly presses, relying on the fixed NBR bumper for end deceleration.
Is the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-40B the Right Cylinder?
When sizing this 63 mm bore actuator, the SDAJ50 provides 981.7 N push at 0.5 MPa, while the SDAJ80 offers 2513.3 N. This SDAJ63X75-40B yields a safe working load of roughly 935 N (about 60% of its 1558.6 N capacity) and can vertically lift approximately 79.4 kg with a 2:1 margin. Choose this specific model when your fixture requires on-site stroke tuning across a 40 mm window.
Confirm the 75 mm maximum stroke, 40 mm adjust window, PT1/4 port, and the male M18x1.5 rod thread. Note that a plain cylinder does not hold its load on air loss or valve centring; the piston drifts and the fixed bumper only decelerates near the end. For a held load, specify an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 35–75 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 SDAJ63X75-40B FAQ
At 0.5 MPa it provides 1558.6 N push and 1401.5 N pull. At 0.7 MPa it yields 2182.1 N push and 1962.2 N pull. The theoretical maximum push is 318 kgf at 1.0 MPa.
No, this specific SKU lacks a piston magnet and cannot take a magnetic switch. You must select the -S variant to enable reed or electronic switch sensing in the body grooves.
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1-Year Warranty
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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