The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X130-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 130mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X130-75 is a 50 mm bore double-acting single-rod cylinder offering a nominal 130 mm stroke with a 75 mm rear adjusting screw. This allows the effective stroke to be fine-tuned on the machine between 55 and 130 mm without replacing the cylinder, ideal for commissioning and format changes. The 20 mm diameter piston rod delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
A built-in magnet (suffix -S) allows easy mounting of CMSG, DMSG, or EMSG reed and solid-state sensors directly on the tie-rod barrel for end-of-stroke detection. The cylinder body length is 194 mm plus stroke, and it features a 21 mm air cushion for smooth deceleration. Standard PT1/4 ports and an M16x1.5 rod thread complete the robust tie-rod design.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X130-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 130 mm |
| Stroke adjustment | Up to 75 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| 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 SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×130 | Nominal (maximum) stroke length in mm. |
| -75 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Adjust the pressing or sealing stroke end by up to 75 mm to accommodate different box heights or product thicknesses on a single packaging line without changing the cylinder.
Compensate for tooling or pad wear in a clamping application by incrementally extending the stroke end via the rear screw, maintaining consistent clamp force over time.
Fine-tune the open position of a material-handling diverter gate to perfectly align with different conveyor widths, using the 75 mm adjustment range for quick setup.
Choose the SCJ50X130-75 when you need to dial in a stroke end position within a 75 mm window, such as adjusting a stop point for different product sizes. If you require more push force, step up to the 63 mm bore SCJ63 which provides 1559 N at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC50 series is a simpler alternative. This model is a direct replacement for another AirTAC SCJ50 cylinder with a 130 mm nominal stroke, 75 mm adjust range, PT ports, and a magnet, using basic mounting.
Adjustable-stroke checklist
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. The push force is higher because the single piston rod reduces the effective piston area on the return stroke.
Only if you do not need field adjustability. The SC50 has a fixed stroke. To maintain the ability to fine-tune the stroke end position, you must replace it with another SCJ50 model with a compatible 75 mm adjustment range, matching port and magnet options.
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