The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-100H is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø63mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-100H is a double-acting, single-rod pneumatic cylinder with a 63 mm bore and a nominal 150 mm stroke, featuring a 100 mm rear-cap adjusting screw for fine-tuning the stroke end position. Its single-rod design delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, with a maximum push thrust of 2805 N at 0.9 MPa. The 20 mm rod and 28 mm air cushion ensure reliable deceleration.
This variant is equipped with Viton (FKM) seals, extending the operating temperature range to 0–150 °C, making it suitable for high-heat environments where standard TPU seals would degrade. The adjustable stroke mechanism allows operators to dial in the exact stroke end without swapping the cylinder, ideal for commissioning, format changes, or compensating for tooling wear in hot processes.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-100H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 100 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, 28 mm |
| Max stroke | Up to 1500 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×150 | Nominal (maximum) stroke length in mm. |
| -100 | 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 this cylinder to operate reliably inside a heated press or molding machine at up to 150°C. The 100 mm adjustment range is perfect for fine-tuning the ejector stroke for different mold depths without needing to open the machine.
Use it to actuate a diverter gate on a conveyor moving hot materials. The adjustable stroke lets you precisely set the gate's open position to match different product widths, while the 1559 N push force handles heavy gates with ease.
In a thermoforming line, this cylinder can position a heated stop or clamp. The rear adjusting screw provides a 100 mm range to quickly change the stop position for different sheet thicknesses, a task that would require a fixed-stroke cylinder to be remounted.
Choose the SCJ63X150-100H when you need a robust 63 mm bore cylinder with a field-adjustable stroke end, particularly in high-temperature applications. If your force requirements are lower, stepping down to a 50 mm bore (982 N push at 0.5 MPa) can save space and air consumption. For higher force, the 80 mm bore provides 2513 N of push force. The adjustable stroke is a key differentiator from a fixed-stroke SC cylinder; pick the SCJ when you anticipate needing to change the stroke end position after installation. For replacement, match this model exactly: an AirTAC SCJ63X150-100H with a PT port, Viton seals, and basic mounting. At a 150 mm stroke, side-loading is generally not a primary concern, but for any off-center loads, ensure the rod is guided externally.
Adjustable-stroke checklist
The push force is calculated using the full 63 mm bore area, while the pull force subtracts the 20 mm rod area. At the standard 0.5 MPa operating pressure, it produces 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N.
It can replace an SC cylinder of the same 63 mm bore and 150 mm nominal stroke, but the SCJ body is slightly longer to accommodate the adjusting mechanism. You must ensure the extra length and the rear adjusting screw do not interfere with your machine. The mounting accessories from the SC series (FA, LB, TC) are fully compatible.
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