The AirTAC Airtac SCD Standard Cylinder SCD100X100TC is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø100mm bore, 100mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD100X100TC delivers identical thrust in both directions—3681 N at 0.5 MPa and 6626 N at the maximum operating pressure of 0.9 MPa—because the 25 mm rod passes through both end caps. This symmetry makes the cylinder predictable for dual-sided tooling and transfer mechanisms where the load profile is the same in extend and retract.
With a 100 mm stroke and a centre-trunnion (TC) mount, this model is built to pivot. The trunnion bracket (supplied as F-SC100TC+TCM1) allows the cylinder body to swing as the rod moves, absorbing angular misalignment in lever-arm and oscillating conveyor drives. The body length A(SCD) is 263 mm, and the adjustable air cushion on each end decelerates the 25 mm through-rod smoothly to protect end-cap seals.
| Model | Airtac SCD Standard Cylinder SCD100X100TC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 100 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 equal force and speed in both directions ensure a balanced, jerk-free motion when shuttling a fixture or pallet between two stations, preventing uneven wear on the linear bearings.
The TC centre-trunnion mount lets the cylinder body swing naturally as it actuates a flap or gate on a conveyor line, eliminating the need for a complex external pivot linkage.
With a rod extending from both ends, one side can drive a clamp while the rear rod actuates a secondary lock or carries a flag for a rear-mounted sensor to confirm position.
Choose the SCD100 when your application needs the balanced 3681 N force at 0.5 MPa; if you can manage with 2268 N, stepping down to an SCD80 reduces air consumption and physical size. The centre-trunnion TC mount is the correct choice when the cylinder must pivot during its stroke—unlike a fixed foot or flange mount, it prevents side-loading from binding the rod bearings. For a fixed linear push with a single output point, the single-rod SC100 is a simpler, lower-cost alternative.
When replacing an existing unit, match five points: 100 mm bore, 100 mm stroke, PT port thread, the TC centre-trunnion mounting style with its TCM1 bracket, and confirm whether a magnet (-S) is needed for your sensors. This model does not include a magnet, so barrel-mounted reed switches cannot be used directly.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated by subtracting the 25 mm rod area from the 100 mm bore area. This yields 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at the maximum operating pressure of 0.9 MPa.
Only if your application specifically requires a rod on both ends for dual tooling or symmetric force. The SCD100 is physically longer due to the rear rod extension and the mounting accessories differ—this TC trunnion mount has no direct single-rod equivalent. Check that the 263 mm body length and rear rod clearance fit your machine before substituting.
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