The AirTAC Airtac SCD Standard Cylinder SCD50X35 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø50mm bore, 35mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD50X35 is a compact double-rod pneumatic cylinder that outputs an identical 825 N of force in both extend and retract strokes at 0.5 MPa, thanks to its through-rod design. With a 20 mm diameter rod protruding from both ends and a 35 mm stroke, it is well-suited for short-throw, two-sided tasks like clamping or ejecting where balanced motion is critical.
This 50 mm bore tie-rod cylinder features a PT1/4 port, an M16x1.5 rod thread, and a 21 mm adjustable air cushion to decelerate the piston smoothly at end of travel. Its body length A(SCD) measures 207 mm, providing a rigid platform for mounting accessories from the SCD subset, such as foot or flange mounts.
| Model | Airtac SCD Standard Cylinder SCD50X35 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 35 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 50 | Bore size in mm. |
| ×35 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The through-rod allows a tool to be mounted on the rear rod end for simultaneous ejection of a part from a fixture while the front rod retracts, doubling the cycle speed.
With the rod supported by bearings in both end caps, the SCD50X35 offers better resistance to rod rotation than a single-rod cylinder, making it suitable for a simple anti-rotation clamp.
Mount a sensor flag or a CMSG magnetic sensor (with -S option) on the rear rod extension to detect piston position when the front rod end is inaccessible inside a fixture.
Choose the SCD50X35 when your application needs equal bidirectional force from a compact double-rod unit. If 825 N at 0.5 MPa is insufficient, stepping up to the 63 mm bore (SCD63) provides 1402 N; if it is too much, the 40 mm bore (SCD40) delivers 528 N. For applications needing force in only one direction, a single-rod SC series cylinder is a simpler, more cost-effective choice.
To replace an existing unit, match five key points: 50 mm bore, 35 mm stroke, PT port thread, the specific SCD mounting accessory (basic, FA, LB, or TC), and the presence or absence of a magnet (-S suffix). This ensures a drop-in fit without modifying your machine's bracketry.
Double-rod checklist
The push and pull forces are equal. At 0.5 MPa it produces 825 N, at 0.7 MPa it is 1154 N, and at the maximum operating pressure of 0.9 MPa, the force reaches 1484 N in both directions.
Choose the SCD when you need identical force and speed in both directions, want to mount tooling or sensors on a rear rod extension, or require better rod guidance and anti-rotation than a single-rod cylinder provides. The SC is a better fit for simple push or pull-only tasks.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.