
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-50 is a genuine double-acting COMPACT cylinder (Ø80mm bore) whose extend end-position is set by an external M20×1.5 adjustment screw. You can dial the stroke anywhere from 5 to 55 mm on the machine — no shims, no part change.
The AirTAC SDAJ80X55-50 is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. By turning the R (M20x1.5) screw, technicians can shorten the forward stroke on-site, dialling the rod end precisely between 5 and 55 mm without swapping shims or parts. Because the adjuster only sets the mechanical stop position rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 2513.3 N of push at 0.5 MPa.
This 80 mm bore actuator utilizes a short riveted body to minimize axial mounting depth, fitting easily into tight machinery where larger profile or round-body units cannot. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Note that this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; adding an -S variant enables sensing capabilities.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X55-50 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 55 mm |
| Adjustable range | 5 – 55 mm |
| Adjuster thread (R) | M20×1.5 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M14×1.5 F / M22×1.5 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 50 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | 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).
Dial in exact 5-55 mm insertion depths for bearing presses on the factory floor, leveraging the 2513.3 N push to seat heavy components without over-travel.
Quickly reposition the extend stop for varying product sizes on automated lines, using the M20x1.5 adjuster to switch hit points while maintaining full force.
Lift loads up to 128.1 kg with a 2:1 margin, setting the precise raise height to prevent collisions, provided an external check valve holds the load if air fails.
When sizing this model, compare its 2513.3 N push at 0.5 MPa against adjacent bores: stepping down to an SDAJ63 yields 1558.6 N, while stepping up to an SDAJ100 provides 3927 N. Based on the 0.5 MPa figure, the safe working load is approximately 1508 N (about 60 percent of capacity), translating to a vertical lift capability of roughly 128.1 kg with a 2:1 safety margin. Choose this 80 mm unit when your application demands high force alongside on-site stroke tuning.
Confirm the 80 mm bore, 55 mm maximum stroke, 50 mm adjustment window, and PT3/8 port. This base configuration has no magnet (no -S) and a female rod-end thread (M14x1.5). Remember that a plain cylinder does not hold position on air loss or valve centring; the piston drifts and the bumper only decelerates near the end. For secure load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
This 80 mm bore cylinder features a PT3/8 air port and generates 2513.3 N push and 2267.8 N pull at 0.5 MPa, 3518.6 N push and 3175 N pull at 0.7 MPa, with a theoretical maximum of 513 kgf at 1.0 MPa.
The R (M20x1.5) screw mechanically shortens the extend stop from the 55 mm maximum down to 5 mm without changing the force. It is a stop, not a lock; the cylinder cannot hold a load mid-stroke on air loss, and end deceleration is handled by a fixed NBR bumper.
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