
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X85-30S 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 55 to 85 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X85-30S is a double-acting compact cylinder featuring an external adjustable extend stop. An M27x2.0 adjuster screw lets you dial the forward stroke down by up to 30 mm directly on the machine, yielding a usable extend range of 55 to 85 mm without changing parts. Because the mechanism sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 3927 N of push at 0.5 MPa.
This model features a short riveted body that drastically saves axial mounting depth where a larger profile cylinder cannot fit. It includes a built-in piston magnet (-S) for AirTAC reed or electronic switches, and relies on a fixed NBR bumper at each end to decelerate the stroke. The 32 mm rod and PT3/8 port are set by the 100 mm bore.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X85-30S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 85 mm |
| Adjustable range | 55 – 85 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 30 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. |
| ×85 | Maximum stroke length in mm. |
| -30 | 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 exact 55 to 85 mm extend position during machine commissioning to apply 3927 N of pressing force without re-machining stops.
Lift payloads up to 200.2 kg safely with a 2:1 margin, using the external M27x2.0 screw to fine-tune the raising height on-site.
Install this riveted body actuator in tight axial spaces where a longer cylinder would fail to fit, relying on the fixed NBR bumper for end stops.
When sizing this actuator, evaluate both neighbouring bores. Dropping down to an SDAJ80 yields 2513.3 N of push at 0.5 MPa, whereas this 100 mm bore provides 3927 N, making the larger unit necessary for heavier tooling. If your application requires even more thrust, you would step outside this compact family. A computed safe working load is roughly 2356 N (about 60 percent of the 0.5 MPa push figure), which translates to a vertical lift capacity of approximately 200.2 kg with a 2:1 safety margin.
This specific configuration includes the -S magnet for position sensing and a nominal 85 mm stroke with a 30 mm adjustment window. Remember that a plain cylinder does not hold its load if air pressure drops or the valve is centred; the piston will drift and the bumper only decelerates near the end of travel. For secure load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder provides 3927 N push and 3524.9 N pull at 0.5 MPa, 5497.8 N push and 4934.8 N pull at 0.7 MPa, with a theoretical maximum push of 801 kgf at 1.0 MPa.
The M27x2.0 screw shortens the extend stop by up to 30 mm, giving a 55 to 85 mm range; it sets the mechanical stop without altering force. The -S option provides a built-in magnet compatible with AirTAC reed or electronic switches for position detection.
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