Airtac JCK High Strength Welding Clamping Cylinder JCK40X30KN
Genuine AirTAC welding clamp cylinder, order code JCK40X30KN from the JCK40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Opening angle30°
- Arm position and clamp armHorizontal arm · No clamp arm
- Sensor and threadNPN electrical sensor (KN) · PT thread
- Bore40 mm
- PortPT1/8
- Output torque (0.5 MPa)120 N·m
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac JCK High Strength Welding Clamping Cylinder JCK40X30KN
For weld cells wired to discrete PLC inputs, the JCK40X30KN pairs the AirTAC JCK40 power clamp platform with an NPN electrical position sensor: 10-30 V DC supply and a 2 mm sensing distance. The 40 mm bore double-acting cylinder opens 30 degrees and uses a toggle-link (crank slider) mechanism that keeps the jaw held even if air is lost - important when a dropped supply must not release the part.
Torque is 120 N.m at 0.5 MPa, with 72 / 120 / 191 N.m available at 0.3 / 0.5 / 0.8 MPa and a maximum holding torque of 380 N.m. Ports are PT1/8, operating pressure 0.3 - 0.8 MPa (43 - 116 psi), proof pressure 1.2 MPa (175 psi), temperature -20 to +70 C, and the air cushion allows clamp and open strokes as fast as 1 s each.
Airtac JCK High Strength Welding Clamping Cylinder JCK40X30KN Technical Specifications
| Order code | JCK40X30KN |
|---|---|
| Product | Welding Clamp Cylinder |
| Opening angle | 30° |
| Arm position and clamp arm | Horizontal arm · No clamp arm |
| Sensor and thread | NPN electrical sensor (KN) · PT thread |
| Bore | 40 mm |
|---|---|
| Port | PT1/8 |
| Output torque (0.5 MPa) | 120 N·m |
| Maximum holding torque | 380 N·m |
| Maximum load torque | 2.2 N·m (1 s cycle) · 3.3 N·m (2 s cycle) |
| Clamping torque 0.3 / 0.5 / 0.8 MPa | 72 / 120 / 191 N·m |
| Weight (135°, 15 mm arm) | 2.2 kg |
| Acting | Double acting |
| Fluid | Air, filtered to 40 µm |
| Operating pressure | 0.3 - 0.8 MPa (43 - 116 psi) |
| Proof pressure | 1.2 MPa (175 psi) |
| Temperature | -20 to +70 °C |
| Opening angle | 15 - 135° in 15° steps |
| Clamp / open time | 1 s / 1 s minimum |
| Position sensing | Electrical or pneumatic sensor |
| Cushion | Air cushion |
Source: AirTAC JCK series datasheet (p.373-374, p.387), ordering code and specifications.
How to choose
Choose JCK40X30KN when your controller reads NPN (sinking) inputs: JCK40X30K is the PNP equivalent, JCK40X30KA returns a pneumatic signal instead, and JCK40X30 omits sensing entirely. All four share the same 40 mm bore and PT1/8 ports, so the choice is about signal type, not performance.
The 30 degree opening suits tighter fixtures than the 45 degree JCK40X45 or 60 degree JCK40X60 and can be changed later by swapping the adjusting screw. No clamp arm is included with this code; add AM1 or AM3 (15 or 45 mm offset) in an R, C or L hole layout, or fit your own arm within the 2.2 N.m (1 s cycle) load-torque limit. Codes ending in G switch the ports from PT to G thread.
Applications
PLC-monitored weld cells
Automated welding stations where the NPN sensor feeds a 10-30 V DC discrete input, so the controller verifies the jaw is closed before firing the weld.
Interlocked assembly stations
Fixture logic that must not advance until clamp confirmation arrives: the electrical sensor output pairs directly with standard NPN I/O blocks.
Fail-safe part retention
Jigs where an air drop must not release the workpiece: the toggle-link mechanism holds up to 380 N.m without supply pressure.
FAQ
What are the key figures of the JCK40X30KN?
Bore 40 mm, opening angle 30 degrees, port PT1/8, double acting. Clamping torque 72 / 120 / 191 N.m at 0.3 / 0.5 / 0.8 MPa, maximum holding torque 380 N.m, load torque limit 2.2 N.m at a 1 s cycle or 3.3 N.m at 2 s. Operating pressure 0.3 - 0.8 MPa (43 - 116 psi), proof pressure 1.2 MPa (175 psi), temperature -20 to +70 C, air cushion, minimum clamp and open time 1 s each. NPN sensor: 10-30 V DC, 2 mm sensing distance.
Can I change the 30 degree opening angle later?
Yes. The opening angle is set in the order code in 15 degree steps from 15 to 135 degrees and can be changed by replacing the adjusting screw. Larger angles such as the 45 degree JCK40X45 give more loading room, but check the resulting swing against your fixture before re-ordering.