The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-50SH is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-50SH is a double-acting, single-rod pneumatic cylinder offering a 50 mm field-adjustable stroke range, letting you fine-tune the end position without replacing the unit. Its 63 mm bore delivers a substantial 1559 N of push force at 0.5 MPa, making it suitable for medium-duty clamping and positioning tasks.
This model includes a built-in magnet for sensor compatibility and high-temperature Viton seals, extending the operating range from 0 to +150 °C. The 20 mm piston rod and 28 mm air cushion ensure smooth deceleration, while the rear adjusting screw provides repeatable stroke-end setting for format changes or wear compensation.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-50SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 50 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. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -50 | 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 50 mm adjustment screw allows operators to precisely set the retract stroke end during machine commissioning, eliminating the need for custom spacer blocks.
With Viton seals rated for 150 °C, this cylinder reliably powers clamps and fixtures in autoclaves, heated presses, or engine testing bays.
Use the adjustable stroke to compensate for mechanical wear on tooling or conveyor stops over time, maintaining consistent part positioning without mechanical shims.
Step up to an 80 mm bore (2513 N push at 0.5 MPa) if you need significantly more force, or down to a 50 mm bore (982 N) for lighter, faster-cycling applications. This SCJ is the right choice when you need to dial in the stroke end on the machine; if your stroke is fixed, a standard SC cylinder is a simpler, more cost-effective alternative. For a direct replacement, match an SCJ63 with a 100 mm nominal stroke, a 50 mm adjust range, PT ports, and a Viton seal with magnet. At this 100 mm stroke, side-loading is typically minimal, but for any off-axis force, pair the cylinder with an external guide rail.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N (due to the 20 mm rod area). At the maximum operating pressure of 0.9 MPa, the push force reaches 2805 N.
Yes, if you need the ability to fine-tune the stroke end. It is a direct dimensional replacement for an AirTAC SCJ63 with a 100 mm nominal stroke and 50 mm adjust range. Ensure your mounting and port threads (PT) match, and note the body length is slightly longer than a fixed-stroke SC to house the adjusting screw.
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