The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-40SH is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø63mm bore, 50mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X50-40SH is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw providing up to 40 mm of field-adjustable stroke-end control. With a 63 mm bore, it delivers 1559 N of push force at 0.5 MPa, making it a robust choice for applications requiring precise end-position tuning without swapping the cylinder.
This model features a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors and is fitted with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for demanding environments. The 20 mm piston rod and PT1/4 ports handle flow efficiently, while the 28 mm air cushion provides smooth deceleration.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X50-40SH |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 40 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. |
| ×50 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Fine-tune the actuator's end-stop during initial machine setup without mechanical modifications, saving hours of trial-and-error with fixed-stroke cylinders.
Quickly adjust the stroke for different product sizes on packaging or sorting lines, reducing downtime between production runs.
Dial in the stroke to compensate for tooling or gripper wear over time, maintaining consistent part contact without replacing the cylinder.
Choose the SCJ63X50-40SH when you need to fine-tune the stroke end position during commissioning or changeovers. If your force requirements increase, stepping up to the 80 mm bore provides 2513 N of push force at the same pressure. For applications needing a fixed, non-adjustable stroke, the standard SC63 series is a direct alternative. This unit is a direct replacement for any AirTAC SCJ63 with a 50 mm nominal stroke, 40 mm adjust range, PT ports, and magnet-equipped configuration.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, it provides 1559 N of push force and 1402 N of pull force. The maximum push force at 0.9 MPa is 2805 N.
A screw in the rear cap allows you to shorten the stroke end by up to 40 mm. It sets a mechanical stop for the piston, letting you fine-tune the extended position without affecting the cylinder's bore or force output.
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.