The AirTAC Airtac ATE Single-Acting Compact Cylinders ATE32X20SBG is a genuine single acting, pull (spring return) ISO 21287 compact air cylinder with a Ø32mm bore and 20mm stroke, 1/8" air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
Spring-extend, air-retract pull motion in an ISO 21287 compact body with G1/8 BSPP parallel ports and a male M8x1.25 rod thread: the ATE32X20SBG nets 296 N of pull at 0.5 MPa and 434 N at 0.7 MPa, with the spring force already deducted from those figures. Parallel BSPP ports seal on a bonded face washer rather than a tapered thread, a common requirement on EU and Asian OEM manifolds, so this G variant is supplied to order in place of the standard PT version. The short ISO 21287 body cuts mounting length by roughly half compared with an ISO 15552 profile cylinder, letting it slot into tight clamping fixtures and gantry frames. For sizing, plan on about 178 N of working pull at 0.5 MPa - roughly 15 kg of vertical lift with a 2:1 margin. Switch feedback needs the optional -S magnet, which enables CMSE or DMSE switches; without that code the cylinder is supplied with no magnet inside.
| Model | Airtac ATE Single-Acting Compact Cylinders ATE32X20SBG |
|---|---|
| Series | ATE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 TPU bumper (both ends) |
| Max standard stroke | Up to 25 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 296.0 N |
| 0.7 MPa | 434.2 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa. Single-acting strokes are short (Ø12 to 10 mm, Ø16-100 to 25 mm).
| ATE | ISO 21287 compact cylinder (single-acting pull, spring-return). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
The spring holds the latch bar engaged on a filling-machine guard; a solenoid valve applies air to pull the rod in and release the gate only during changeover.
With the rod normally extended, the eject pin sits advanced; a short air pulse retracts it 20 mm so finished circuit boards index past the fixture unobstructed.
On a small milling fixture the rod-out position keeps a swing slide closed; air pull retracts the M8x1.25 male-threaded rod to open the slide for part loading.
Match the G1/8 parallel ports to your existing bonded-washer fittings or EU-style manifold block; if your plant runs tapered NPT or PT hardware, order the T or plain-thread variant instead so nothing has to be re-plumbed. At this bore size the cylinder pulls 296 N at 0.5 MPa - drop to a 25 mm bore (171 N) for lighter latch duty or step up to a 40 mm bore (500 N) as clamping loads grow. The B code delivers a male M8x1.25 rod thread that pairs with I or Y knuckles, while FA/FB flange, LB foot, CA/CB clevis, CR, SDB and FTC mounts bolt onto the same ISO 21287 face. On air loss the spring drives the rod back to its extended home position, so a mid-stroke setting cannot be held. Add -S when position sensing matters.
Quick checklist
Net of the return spring, this 32 mm bore pulls 296 N at 0.5 MPa and 434 N at 0.7 MPa. Feed it filtered air at 0.2-1.0 MPa (28-145 psi); proof pressure is 1.5 MPa (215 psi). Rod speed runs 50-500 mm/s, the 20 mm stroke is a standard length, and a fixed TPU bumper at each end absorbs the spring and air end positions.
The G code specifies G1/8 BSPP parallel ports, which seal on a bonded face washer instead of a tapered thread - the standard ATE carries PT (Rc), so the G version is produced to order for EU and Asian OEM plumbing. Position feedback is available only with the optional -S magnet; order it and CMSE or DMSE switches can sense rod position in the body slots.
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