Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X40-40B
The AirTAC Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X40-40B 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 0 to 40 mm on the machine — no shims, no part change.
- BoreØ50 mm
- Max stroke40 mm
- Adjustable range0–40 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 SDAJ50X40-40B
The AirTAC SDAJ50X40-40B is a double-acting compact cylinder featuring an on-site adjustable extend stop. By turning the external M16x1.5 adjuster screw, you can set the extend position anywhere from 0 to 40 mm without changing parts. Because the mechanism limits travel rather than altering piston area, output force remains identical to a standard SDA, providing 981.7 N of push at 0.5 MPa.
This variant utilizes a male-threaded M18x1.5 piston rod for direct mounting. Its short riveted body drastically cuts axial mounting depth where larger profile cylinders cannot fit. End shock is managed solely by a fixed NBR bumper, which decelerates the piston near the end of travel but is not an adjustable air cushion.
Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X40-40B Technical Specifications
| Model | Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X40-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø50 mm |
| Max stroke | 40 mm |
| Adjustable range | 0 – 40 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 SDAJ50X40-40B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SDAJ50X40-40B Is Used
Machining Clamps
Dial in the 0-40 mm extend stop on the fly to secure raw castings of varying widths, leveraging the 981.7 N push force for rigid holding.
Carton Forming
Adjust the male M18x1.5 rod extension precisely during size changeovers to fold different box blanks without swapping cylinder hardware.
Vertical Lift Stops
Set mechanical limits for lifting 50 kg assemblies, knowing the fixed NBR bumper will decelerate the load near the upper travel end.
Is the Airtac SDAJ50~63 Adjustable Ultra-Thin Cylinder SDAJ50X40-40B the Right Cylinder?
When sizing this unit, evaluate both neighboring bores: the SDAJ40 yields 628.3 N push at 0.5 MPa, while the SDAJ63 provides 1558.6 N. This 50 mm bore generates 981.7 N, translating to a safe working load of roughly 589 N (about 60 percent of capacity) and a vertical lift capability near 50 kg with a 2:1 safety margin. Choose this specific model if your fixture requires frequent changeovers or trial positioning within the 0-40 mm window.
Confirm your parameters: 50 mm bore, 40 mm stroke, 40 mm adjustment window, PT1/4 air port, and a male M18x1.5 rod thread. Note that this SKU lacks a piston magnet, so it cannot accept reed or electronic switches. A plain cylinder will not hold a load if air pressure drops; for vertical 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 0–40 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 SDAJ50X40-40B FAQ
At 0.5 MPa it provides 981.7 N push and 824.7 N pull. At 0.7 MPa it provides 1374.4 N push and 1154.5 N pull. The theoretical maximum push is 200 kgf at 1.0 MPa.
The M16x1.5 adjuster screw mechanically shortens the extend stroke from 0 to 40 mm without altering force. This SKU includes a male M18x1.5 rod thread, and because it lacks the -S magnet option, it cannot be used with magnetic switches.
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