This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X20SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X20SB in place of this model. 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.
Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 20mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X20SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.5
- StatusDiscontinued → ACED50X20SB
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB
Double acting and double rod, the ACPD50X20SB pushes a 50 mm piston through a 20 mm stroke with a rod leaving both covers, so every stroke delivers the same 881.2 N at 0.5 MPa (1233.7 N at 0.7 MPa) from the rod-side area. The male-threaded 16 mm rod (B code) resists rotation and side load, and the rear rod can carry a sensor flag or a second tool. Its short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
The hard-anodized aluminium body carries 1/8" ports and a fixed TPU bumper at each end; speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi) of clean, 40 um filtered air. In practice, plan on roughly 529 N of usable push at 0.5 MPa, which lifts about 45 kg vertically with a 2:1 margin. Note this model is discontinued: the current-production drop-in is the ACED50X20, so confirm the ISO 21287 mounting dimensions before swapping. The -S magnet is fitted on this unit, so CMSE / DMSE switches can be mounted directly.
Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X20SB |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED50X20SB (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.
Theoretical Output Force (Ø50mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 (adjustable stroke).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB Is Used
Reciprocating transfer slide
The through-rod gives an identical 881.2 N in each direction, ideal for a 20 mm shuttle stroke moving small pallets between two machining stations on a fixture plate.
Clamp-and-eject fixture
Male rod thread takes an I/Y knuckle for a swing clamp while the rear rod drives an ejector pin, both fed from the same 1/8" ported body in a tight jig cavity.
Position-flagged press station
With the -S magnet fitted, CMSE or DMSE switches confirm end-of-stroke on a light stamping or marking operation cycling at up to 500 mm/s.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB with the ACED50X20SB
At 881.2 N per side (0.5 MPa), the 50 mm bore sits between the 40 mm (571.8 N) and 63 mm (1458.1 N) double-rod sizes; step up to 63 mm if your fixture needs more than about 530 N of working force. The 20 mm stroke is well inside the 250 mm maximum standard stroke for this bore. FA/FB flange and LB foot brackets bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches. A plain double-rod cylinder will drift when air is lost, so add a rod lock or pilot check for held loads. Order the ACED50X20 as the current replacement and verify mounting dimensions against the datasheet.
Replacement checklist
- ✓ Current-production ACE → ACED50X20SB
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD50X20SB FAQ
Because a rod exits both covers, force is equal in both directions: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, taken from the rod-side area. At 1.0 MPa the theoretical maximum is 179.7 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, and speed runs 30-500 mm/s.
The hard-anodized aluminium body follows the ISO 21287 compact format, cutting roughly 50% of the mounting length compared with an ISO 15552 profile cylinder, and a fixed TPU bumper at each cover decelerates the piston at the ends. It does not hold or brake a load, so use a rod lock or pilot check where position must be kept. This model is discontinued; the ACED50X20 is the current drop-in, so confirm ISO 21287 mounting dimensions before ordering.
Related AirTAC ACE Cylinders
Request a Quote for the ACED50X20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X20SB replacement — usually within 7-8 hours.