Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B 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 0 to 85 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke85 mm
- Adjustable range0–85 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 SDAJ25X85-100B
The AirTAC SDAJ25X85-100B is a compact double-acting single-rod cylinder featuring an external M8x1.25 R screw that dials the extend stop from 0 to 85 mm directly on your machine. Because the adjuster sets the mechanical stop rather than the piston area, output force remains identical to a standard SDA of this bore, delivering 245.4 N push at 0.5 MPa. The short riveted body drastically reduces axial mounting depth where a round-body or profile cylinder will not fit.
This specific SKU uses a male M8x1.25 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches without switching to the -S variant. End-of-stroke deceleration relies on a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating speed spans 30-500 mm/s across a 0.15-1.0 MPa pressure range.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 85 mm |
| Adjustable range | 0 – 85 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 100 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 SDAJ25X85-100B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×85 | Maximum stroke length in mm. |
| -100 | 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 SDAJ25X85-100B Is Used
Adjustable Pin Insertion
Dial the 0-85 mm extend stop to press pins to exact depths without fabricating new spacers, leveraging the 245.4 N push for reliable seating.
Rapid Format Changeover
Turn the M8x1.25 R screw to reposition the male rod end for different product widths, cutting setup time on high-mix packaging lines.
Trial Positioning Stops
Use the 0-85 mm adjustment window to find the optimal clamping location during prototyping before locking down the final mechanical stop.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B the Right Cylinder?
When sizing this 25 mm bore, compare the 245.4 N push at 0.5 MPa against adjacent options: stepping down to the SDAJ20 yields 157.1 N, while moving up to the SDAJ32 provides 402.1 N. Based on the 245.4 N figure, a safe working load is roughly 147 N (about 60 percent capacity), translating to a vertical lift capability of approximately 12.5 kg with a 2:1 safety margin. Choose this male-rod (-B) unit when your tooling requires an externally threaded M8x1.25 attachment point.
Engineers who frequently change tooling or need trial positioning will benefit from the 0-85 mm on-site extend tuning without shims or part swaps. Remember that a plain SDAJ does not hold position or load when air is lost or the valve is centred; the fixed bumper only decelerates near the end and the R screw is a mechanical stop, not a lock. For load holding without live pressure, specify an external rod lock or pilot-operated check valve. Confirm your bore, 85 mm maximum stroke, 100 mm window, M5x0.8 port, and male rod thread before ordering.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–85 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 SDAJ25X85-100B 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 M8x1.25 adjuster screw shortens the extend stroke by up to 100 mm, allowing you to set the extend stop anywhere from 0 to 85 mm. Retract remains full stroke, and the screw acts as a mechanical stop, not a mid-stroke lock.
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.
Related AirTAC SDAJ Cylinders
Request a Quote for Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X85-100B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.