Airtac STA Single Acting Compact Guided Cylinder STA40X15B
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA40X15B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø40mm bore and 15mm stroke. Air pulles the rod and an internal spring returns it, so one solenoid line drives the motion — ideal for short-stroke clamping and ejection in tight spaces.
- BoreØ40 mm
- Stroke15 mm
- Port sizePT1/8
- Acting typeSingle acting, pull type
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper
About the Airtac STA Single Acting Compact Guided Cylinder STA40X15B
The AirTAC STA40X15B is a compact single-acting pull-type cylinder where compressed air retracts the rod and an internal spring pushes it back out. It generates 445.1 N of net pull at 0.5 MPa, safely handling a working load of roughly 267 N or vertically lifting about 22.7 kg with a 2:1 margin. This unit features a male M14x1.5 piston rod thread for direct load attachment.
Designed to save axial mounting depth, the short riveted body fits where round-body or larger profile cylinders cannot. The bore dictates a PT1/8 air port and a 16 mm rod diameter. End-of-stroke deceleration is managed by a fixed NBR bumper rather than an adjustable air cushion, absorbing shock without adding length.
Airtac STA Single Acting Compact Guided Cylinder STA40X15B Technical Specifications
| Model | Airtac STA Single Acting Compact Guided Cylinder STA40X15B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed NBR bumper |
| Max standard stroke | Up to 30 mm |
Specifications follow the official AirTAC SDA-family datasheet. Single-acting types start at 0.2 MPa (the spring must be overcome). Confirm against the product label before installation.
Net Output Force (Ø40mm, Pull)
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 445 N |
| 0.7 MPa | 656 N |
These are NET output forces — the return-spring force is already deducted. Single-acting pull only; the spring performs the opposite stroke. Size with a safety margin.
Model Code: Airtac STA Single Acting Compact Guided Cylinder STA40X15B
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | Stroke length in mm (single-acting max 30 mm). |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard. SSA pushes out / spring returns; STA pulls in / spring extends. Related: SDA (double acting), SDAD (double rod), SDAJ (adjustable stroke).
Where the Airtac STA Single Acting Compact Guided Cylinder STA40X15B Is Used
Tensioning Systems
Uses the 445.1 N net pull to draw belts or filaments taut, relying on the spring to maintain tension when the air supply drops out.
Hold-Down Clamps
Pulls a workpiece securely against a fixture via the male M14x1.5 rod, releasing the clamp automatically to the extended position on air loss.
Gate Diverters
Actuates a short 15 mm stroke to pull a sorting gate closed, with the fixed NBR bumper absorbing the repeated end-of-stroke shock.
Is the Airtac STA Single Acting Compact Guided Cylinder STA40X15B the Right Cylinder?
When sizing this 40 mm bore model, compare its 445.1 N net pull at 0.5 MPa against neighboring bores: the STA32 provides 290.1 N, while the STA50 offers 717.7 N. This STA40X15B configuration includes a 15 mm stroke (under the 30 mm maximum) and the B option for a male M14x1.5 rod end.
Because it is spring-extended, the rod drives outward to its rest position upon air loss and will not hold a mid-stroke load. This specific SKU lacks the S magnet code, so it cannot accept reed or electronic switches. Operating pressure must be 0.2-1.0 MPa, requiring at least 0.2 MPa to overcome the internal spring.
Quick checklist
- ✓ Net pull force at your working pressure
- ✓ Stroke ≤ 30 mm (single-acting limit)
- ✓ Single air line saves a valve/port
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Remember the spring performs the return stroke.
- check Avoid side load on the short piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac STA Single Acting Compact Guided Cylinder STA40X15B FAQ
The net pull force is 445.1 N at 0.5 MPa and 656.2 N at 0.7 MPa. These figures already account for the internal return spring, meaning the air pressure only retracts the rod.
No, this specific SKU does not include the S code for a piston magnet, so it cannot accept reed or electronic switches. You would need the STA40X15BS variant for position sensing.
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