This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X35SB, the same code under the new prefix. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.

The AirTAC ACPD Double Rod Compact Cylinder ACPD20X35SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 35mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X35SB (ISO 21287 ACE), in the same bore, stroke and force class.
This is a double acting, double-rod compact cylinder: a piston rod exits both covers, so the through-rod sees the rod-side area on every stroke and delivers an equal 117.8 N at 0.5 MPa (164.9 N at 0.7 MPa) in each direction. The male rod thread (B code) bolts straight to tooling, and the fitted -S magnet accepts CMSE / DMSE reed or solid-state switches for end-of-stroke sensing. The 20 mm bore carries an M5x0.8 port and runs at 0.15-1.0 MPa (22-145 psi) with a speed range of 30-500 mm/s.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper sits at both ends, and the hard-anodized aluminium body pairs with an S45C hard-chrome rod. Note this model is discontinued: the current-production direct is ACED20X35, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X35SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X35SB |
| Bore size | Ø20 mm |
| Stroke | 35 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| 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 bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED20X35SB (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×35 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (double rod, adjustable stroke).
The 117.8 N per-direction force at 0.5 MPa clamps small aluminium brackets in a drilling jig, and the male rod thread takes a custom clamp tip directly.
With a rod on both covers, one cylinder can push a PCB tray into a nest and retract it with equal force - no separate return cylinder needed.
The fitted -S magnet with CMSE / DMSE switches confirms end-of-stroke on a screw-driving station, while the back rod drives a status flag.
At 117.8 N per direction at 0.5 MPa, the 20 mm bore suits light clamping and transfer heads; step down to the 16 mm bore (75.4 N) for smaller loads or up to the 25 mm bore (206.2 N) when you need more margin. The through-rod resists rotation and side load, and the rear rod can carry a sensor flag. If a load must stay put when air is lost, add a rod lock or pilot check - the cylinder itself will drift. FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets mount on the same face. Since ACPD20X35SB is discontinued, order ACED20X35 as the current replacement and verify the ISO 21287 mounting dimensions.
Replacement checklist
Because a rod exits both covers, force is equal in both directions: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, with a maximum of 24.0 kgf at 1.0 MPa. Both strokes use the rod-side area, so there is no push-versus-pull difference. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and speed 30-500 mm/s.
The short ISO 21287-class body cuts about 50% of the mounting length of an ISO 15552 profile cylinder, and a fixed TPU bumper decelerates the piston at each end. The -S magnet on this unit accepts CMSE / DMSE switches. ACPD20X35SB is discontinued; the current-production replacement is ACED20X35 - confirm the ISO 21287 mounting dimensions before converting.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X35SB replacement — usually within 7-8 hours.