The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-30H is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X100-30H is a double-acting, single-rod pneumatic cylinder engineered for high-temperature environments where stroke-end position must be field-tuned. Its rear adjusting screw provides a 30 mm adjustable range, letting you shorten the 100 mm nominal stroke without dismounting the cylinder. The 20 mm diameter piston rod and PT1/4 ports deliver a robust 982 N push force at 0.5 MPa, making it suitable for medium-force positioning tasks.
This variant is fitted with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for use near ovens, autoclaves, or hot presses. The tie-rod construction houses a 21 mm air cushion to decelerate the piston quietly at stroke end. With a body length A of 194 mm, it integrates into compact machine layouts while offering the flexibility of on-the-fly stroke adjustment.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-30H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 30 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. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
The Viton seals allow the SCJ50X100-30H to operate reliably at up to 150°C, making it ideal for actuating platens in heated lamination or forming presses where the stroke end must be precisely set to control material thickness.
Use the 30 mm rear screw adjustment to fine-tune the opening of a diverter gate on a conveyor in a baking or drying tunnel. The 982 N push force easily handles the gate mechanism, and the adjustment compensates for thermal expansion.
Deploy this cylinder in an autoclave door latching system. The adjustable stroke lets you set the perfect locking pin engagement depth during setup, while the Viton seals ensure long life under sustained high-temperature steam exposure.
Choose the SCJ50X100-30H when you need to fine-tune the stroke end during commissioning or format changes on a hot-running machine. If your force requirement is lower, the 40 mm bore SCJ40 series provides 628 N push at 0.5 MPa; for heavier loads, step up to the SCJ63 with 1559 N push. The adjustable stroke is ideal for dialling in precise end positions, but if your application demands a fixed, repeatable stroke without any risk of drift, the standard SC fixed-stroke cylinder is a simpler choice. For a direct replacement, match the 50 mm bore, 100 mm nominal stroke, 30 mm adjust range, PT port thread, and Viton seal material. For strokes of 300 mm or more, consider an external guide rail or a guided cylinder to protect the 20 mm rod from side-load bending.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. The rear adjusting screw changes only the stroke end position, not the force output.
Yes, if you need the ability to adjust the stroke end. The SCJ50X100-30H shares the same bore, rod diameter, and port size as an SC50X100, but adds a 30 mm adjustable range. Ensure your mounting and envelope can accommodate the slightly longer SCJ body length (194 mm for the 50 bore) and that you select the matching Viton seal option if required.
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.