Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-30B
The AirTAC Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-30B 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 45 to 75 mm on the machine — no shims, no part change.
- BoreØ63 mm
- Max stroke75 mm
- Adjustable range45–75 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 SDAJ63X75-30B
The AirTAC SDAJ63X75-30B is a compact double-acting single-rod cylinder featuring an external M16x1.5 adjustment screw that dials the extend stop directly on your machine between 45 and 75 mm without shims or part changes. Retract remains full, and because the adjuster sets the mechanical stop rather than the piston area, output force equals a standard SDA of this bore, delivering about 1558.6 N push at 0.5 MPa.
The short riveted body saves valuable axial mounting depth where larger profile or round-body units will not fit. This specific SKU includes a male M18x1.5 piston rod end and lacks a piston magnet, meaning it cannot host reed or electronic switches. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-30B Technical Specifications
| Model | Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-30B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø63 mm |
| Max stroke | 75 mm |
| Adjustable range | 45 – 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 30 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 SDAJ63X75-30B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 63 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -30 | 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 SDAJ63X75-30B Is Used
Custom Fixture Clamping
Dial in the exact 45 to 75 mm extend position during short-run changeovers to clamp varying part geometries without machining new spacers.
Vertical Lift Stops
Set a precise mechanical lower stop for lifts around 79.4 kg, relying on the fixed NBR bumper to absorb the end shock rather than an adjustable cushion.
Trial Positioning
Use the M16x1.5 adjuster screw to find the optimal push depth dynamically on the machine floor before locking down the final extend dimension.
Is the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ63X75-30B the Right Cylinder?
When sizing this 63 mm bore, verify your force requirements both ways: stepping down to an SDAJ50 yields 981.7 N push at 0.5 MPa, while stepping up to an SDAJ80 provides 2513.3 N. For the SDAJ63, a safe working load is roughly 935 N (about 60% of the 1558.6 N figure), allowing a vertical lift of approximately 79.4 kg with a 2:1 safety margin.
Choose this adjustable-stop variant if your application requires frequent on-site stroke tuning or changeovers. Confirm your setup needs the male M18x1.5 rod thread, the PT1/4 air port, and the 30 mm adjustment window. Note that a plain cylinder does not hold position on air loss or valve centring; the piston drifts and the fixed bumper only decelerates near the end. 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 45–75 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 SDAJ63X75-30B FAQ
This 63 mm bore cylinder has a PT1/4 air port. It generates 1558.6 N push and 1401.5 N pull at 0.5 MPa, 2182.1 N push and 1962.2 N pull at 0.7 MPa, with a theoretical maximum of 318 kgf at 1.0 MPa.
Turning the external R (M16x1.5) screw shortens the extend stroke by up to 30 mm, giving a usable range of 45 to 75 mm. This specific SKU lacks a piston magnet, so it cannot host reed or electronic switches; you would need the -S variant for sensing.
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