Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB is a genuine double-acting COMPACT cylinder (Ø25mm bore) whose extend end-position is set by an external M8×1.25 adjustment screw. You can dial the stroke anywhere from 15 to 65 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke65 mm
- Adjustable range15–65 mm
- Adjuster threadM8×1.25
- Port sizeM5×0.8
- 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB
The AirTAC SDAJ25X65-50SB is a compact double-acting single-rod cylinder featuring an external M8x1.25 adjustment screw that dials the extend stop from 15 to 65 mm directly on your machine. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 245.4 N of push at 0.5 MPa. The short riveted body saves valuable axial mounting depth where round-body or profile cylinders cannot fit.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches, along with a male M8x1.25 threaded rod end for secure external mounting. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating speed spans 30-500 mm/s across a 0.15 to 1.0 MPa pressure range.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 65 mm |
| Adjustable range | 15 – 65 mm |
| Adjuster thread (R) | M8×1.25 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M5×0.8 F / M8×1.25 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 50 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×65 | Maximum stroke length in mm. |
| -50 | 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB Is Used
Trial Positioning Jigs
Dial the extend stop between 15 and 65 mm to find the exact contact point for prototype parts without fabricating new spacers.
Quick Changeover Lines
Turn the M8x1.25 adjuster to accommodate different product heights on a shared conveyor, saving axial space with its short riveted body.
Variable Depth Flap Folding
Set the precise 245.4 N push stroke needed for various carton depths on the fly, relying on the fixed NBR bumper to absorb end shock.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB the Right Cylinder?
When sizing this 25 mm bore actuator, evaluate both neighboring options. Dropping down to the SDAJ20 yields 157.1 N of push at 0.5 MPa, whereas stepping up to the SDAJ32 provides 402.1 N. This model provides a safe working load of roughly 147 N, or about 60% of its 245.4 N capacity, allowing a vertical lift of approximately 12.5 kg with a 2:1 safety margin.
Choose this unit when frequent changeovers require on-site stroke tuning without swapping shims. Remember that a plain cylinder does not hold position upon air loss or valve centering; 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. This configuration includes the -S magnet and -B male M8x1.25 rod thread, with an M5x0.8 port.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 15–65 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 M8×1.25 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 SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X65-50SB FAQ
At 0.5 MPa it provides 245.4 N push and 206.2 N pull. At 0.7 MPa it provides 343.6 N push and 288.6 N pull. The theoretical maximum push is 50 kgf at 1.0 MPa.
The external screw shortens the extend stroke by up to 50 mm, allowing a usable range of 15 to 65 mm. The included -S magnet enables position sensing using AirTAC reed or electronic switches.
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.
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