
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-10B is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 75 to 85 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X85-10B is a compact double-acting double-rod cylinder built for tight axial spaces. It features a short riveted body that saves mounting depth where round-body alternatives will not fit. The external M12x1.25 adjuster screw lets you dial the extend stop directly on the machine between 75 and 85 mm without changing parts.
This specific SKU includes a male M14x1.5 piston rod thread and lacks a piston magnet. End shock is managed solely by a fixed NBR bumper that decelerates the stroke end without acting as a lock or adjustable air cushion.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X85-10B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 85 mm |
| Adjustable range | 75 – 85 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 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 10 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
SDAJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SDA push of the same bore. Actual usable force is lower than theoretical due to friction.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 40 | Bore size in mm. |
| ×85 | Maximum stroke length in mm. |
| -10 | 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).
Dial the extend stop from 75 to 85 mm during product family changeovers to set new end positions without machining new spacers.
Fine-tune the male M14x1.5 rod tip position on the fly to accommodate varying box heights while maintaining 628.3 N of extend force.
Use the 10 mm external adjustment window to find the exact contact point for a forming operation before locking down the sequence.
When sizing this unit, evaluate the neighbouring bores to match your load.
Choose this male-rod configuration when your tooling requires an M14x1.5 threaded attachment. Remember that a standard cylinder does not hold position upon air loss or valve centring; the fixed bumper only decelerates near the end of travel. For suspended loads, integrate an external rod lock or pilot-operated check valve. Confirm your requirements for the 40 mm bore, 85 mm stroke, 10 mm window, PT1/8 port, and lack of a magnet switch.
Quick checklist
The theoretical maximum push is 128 kgf at 1.0 MPa.
Turning the M12x1.25 R screw shortens the extend stop within the 75-85 mm range. It functions only as a mechanical stop and does not alter force. The cylinder cannot hold a load on air loss; use an external rod lock for that.
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