The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X100-30S 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. Ø63mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X100-30S delivers a robust 1559 N of push force at 0.5 MPa, stepping up to 2805 N at the maximum operating pressure of 0.9 MPa. Its 30 mm rear adjusting screw lets you fine-tune the stroke end position on the fly, which is ideal for dialling in precise stopping points during commissioning or accommodating slight variations in tooling setups without replacing the entire cylinder.
This model features a 20 mm diameter piston rod and M16x1.5 rod thread, with PT1/4 pneumatic ports. The integrated air cushion provides a 28 mm deceleration zone at each end of the stroke. A built-in magnet is included, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod body for reliable, non-contact position feedback.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X100-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 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, 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. |
| -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 30 mm adjustment range allows process engineers to precisely set the end-of-stroke position for a new machine, compensating for minor assembly tolerances without needing to swap out the cylinder for a different stroke length.
On a packaging line, quickly adjust the push stroke for a new box size. The rear screw makes it simple to reduce the stroke from 100 mm down to 70 mm, eliminating the need for external mechanical stops.
In a clamping or pressing operation, the adjustable stroke can be periodically extended by a few millimeters to compensate for the gradual wear of a consumable pad or tooling face, maintaining consistent clamping force.
Choose this 63 mm bore when the 50 mm bore's 982 N push force at 0.5 MPa is insufficient for the load. If your application requires a fixed, non-adjustable stroke, the standard SC63 series is a more economical alternative. For a direct replacement, match an AirTAC SCJ cylinder with a 63 mm bore, 100 mm nominal stroke, a -30 adjustment range, PT ports, and a basic mount. For strokes of 300 mm or more, assess the rod for potential side-loading and consider adding an external linear guide or switching to a guided cylinder to prevent bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. The pull force is lower due to the area of the 20 mm piston rod.
Yes, the SCJ63X100-30S is a direct dimensional replacement for the SC63X100, with the same body length and mounting footprint. The key addition is the rear adjusting screw, which allows you to shorten the effective stroke by up to 30 mm in the field.
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.