The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X150-50 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, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X150-50 is a double-acting, single-rod pneumatic cylinder that puts fine stroke control directly on the machine. Its rear-cap adjusting screw lets you shorten the stroke end by up to 50 mm without removing the cylinder, making it ideal for commissioning trials, format changeovers, or taking up mechanical wear. With a 20 mm rod and M16x1.5 knuckle thread, it delivers a solid 1559 N of push force at 0.5 MPa (2805 N at 0.9 MPa).
This 63 mm bore cylinder uses a PT1/4 port and features an adjustable air cushion for smooth deceleration. The body length A(SCJ) is 197 mm, and it's built on the proven AirTAC tie-rod platform. Standard strokes for this bore go up to 1500 mm, so the 150 mm nominal stroke here is well within the standard range. The default configuration includes a TPU seal for -20 to +70 °C operation and PT threads.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X150-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 150 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. |
| ×150 | 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.
Field technicians can fine-tune the end-of-stroke position by up to 50 mm during initial machine setup, eliminating the need to shim or reposition the cylinder mounting to achieve precise part placement.
In high-cycle clamping or pressing fixtures, the adjustable screw allows operators to quickly take up slack caused by pad wear or tooling compression, maintaining consistent clamping force without replacing the cylinder.
On packaging or sorting lines running multiple product sizes, the stroke can be re-adjusted in minutes to match a new box width or pallet dimension, dramatically reducing downtime between batches.
Choose the SCJ63 when you need around 1560 N of push force at standard plant air and value the ability to dial in the stroke end position. If your application requires more force, stepping up to the 80 mm bore provides 2513 N of push at 0.5 MPa. For a fixed, non-adjustable stroke, the standard SC63 is a simpler alternative. A direct replacement must match the 63 mm bore, 150 mm nominal stroke, 50 mm adjustable range, PT1/4 ports, and basic mounting. For strokes of 150 mm, rod deflection is generally not a concern under axial loading, but always ensure the load is guided if any side forces are present.
Adjustable-stroke checklist
The push force is calculated on the full 63 mm bore area, while the pull force subtracts the 20 mm rod area. At 0.5 MPa, you get 1559 N push and 1402 N pull. At the maximum operating pressure of 0.9 MPa, push force increases to 2805 N.
Yes, provided the bore, port size, and mounting match. The SCJ63X150-50 has the same envelope as an SC63 but adds a rear adjusting screw. The body length A(SCJ) is 197 mm, which is slightly longer than the fixed-stroke version to accommodate the mechanism. You must ensure there is clearance behind the rear cap for the screw and lock nut.
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.