
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X65-20S is a genuine double-acting COMPACT cylinder (Ø100mm bore) whose extend end-position is set by an external M27×2.0 adjustment screw. You can dial the stroke anywhere from 45 to 65 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X65-20S is a double-acting compact cylinder featuring a 100mm bore and an external adjustable extend stop. A built-in piston magnet enables position sensing with AirTAC reed or electronic switches. The R (M27x2.0) adjuster screw lets you dial the extend stroke down from 65mm to 45mm directly on the machine, eliminating the need for shims or part swaps during setup.
Because the adjuster sets the mechanical stop rather than altering the piston area, output force equals a standard SDA of this size, delivering 3927N push at 0.5MPa. The short riveted body saves valuable axial mounting depth where larger profile cylinders cannot fit. End-of-stroke deceleration is handled by a fixed NBR bumper, not an adjustable air cushion.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X65-20S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 65 mm |
| Adjustable range | 45 – 65 mm |
| Adjuster thread (R) | M27×2.0 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M18×1.5 F / M26×1.5 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 20 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×65 | Maximum stroke length in mm. |
| -20 | 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 in the 45-65mm extend stop on the R screw during press tooling changeovers to prevent over-travel, utilizing the full 3927N push at 0.5MPa for forming operations.
Safely lift 200.2kg loads with a 2:1 margin by tuning the extend endpoint on-site, ensuring precise placement without swapping mechanical spacers.
Secure heavy workpieces by adjusting the clamping depth within the 20mm window, relying on the fixed NBR bumper to absorb the substantial end-of-stroke shock.
When sizing this actuator, evaluate your force requirements bidirectionally. Stepping down to an SDAJ80 yields 2513.3N push at 0.5MPa, whereas this 100mm bore provides 3927N. If your application demands a safe working load around 2356N (roughly 60% of the 0.5MPa figure) or a vertical lift capacity of 200.2kg with a 2:1 safety margin, this model fits perfectly. The PT3/8 port and 32mm rod handle substantial airflow and structural loads.
Operators requiring frequent changeover or trial positioning benefit from the 20mm on-site adjustment window. Remember that a plain cylinder drifts when air is lost or the valve centers; the fixed bumper only decelerates near the end of travel and is not a lock. For secure load holding without live pressure, integrate an external rod lock or pilot-operated check valve. Confirm your bore, 65mm stroke, 20mm window, female M18x1.5 rod thread, and the installed magnet.
Quick checklist
This 100mm bore double-acting cylinder delivers 3927N push and 3524.9N pull at 0.5MPa. At 0.7MPa, push increases to 5497.8N. The theoretical maximum push force is 801kgf at 1.0MPa.
The M27x2.0 adjuster screw mechanically shortens the extend stroke from 65mm down to 45mm without changing the output force. The included -S magnet works with AirTAC reed or electronic switches for end-position sensing.
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