Airtac JCK High Strength Welding Clamping Cylinder JCK40X45KN
Genuine AirTAC welding clamp cylinder, order code JCK40X45KN from the JCK40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Opening angle45°
- 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 JCK40X45KN
JCK40X45KN is the NPN-sensored 45 degree version of the AirTAC JCK40 power clamp. The KN option in the ordering code specifies an NPN electrical sensor rated 10 to 30 V DC with a 2 mm sensing distance, giving the PLC a sinking signal that confirms whether the clamp is open or closed. The cylinder itself is double acting with a 40 mm bore, PT1/8 ports and a toggle-link mechanism that holds the clamp position even if air is lost.
Torque output is 120 Nm at 0.5 MPa and the holding torque reaches 380 Nm, with clamping torque of 72/120/191 Nm at 0.3/0.5/0.8 MPa. This code carries no clamp arm, so you mount your own. The 45 degree opening angle is one of nine 15 degree steps from 15 to 135 degrees and can be changed later by replacing the adjusting screw; four-face mounting follows DIN-standard dimensions.
Airtac JCK High Strength Welding Clamping Cylinder JCK40X45KN Technical Specifications
| Order code | JCK40X45KN |
|---|---|
| Product | Welding Clamp Cylinder |
| Opening angle | 45° |
| 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
Pick JCK40X45KN when your control inputs are NPN or sinking type; the PNP sibling JCK40X45K sources instead, and JCK40X45KA signals pneumatically with no electrical output at all. At 45 degrees this sits between JCK40X30KN and JCK40X60KN in loading clearance, and the full 15 to 135 degree range is available in 15 degree steps. This code omits the clamp arm, so order AM1 or AM3 (15 or 45 mm offset, R, C or L hole layout) if you want a factory arm, and end the code with G for G threads instead of PT.
Applications
PLC-verified weld fixtures
The NPN sensor (10 to 30 V DC, 2 mm sensing distance) feeds clamp position straight into sinking PLC inputs so the controller checks the 45 degree closed state before welding.
Fixture clamping in automated lines
A 1 s minimum clamp time and 120 Nm output torque at 0.5 MPa keep station cycle times predictable, with the toggle-link lock holding position through air loss.
Fixture design with custom arms
Ordered without a clamp arm, the cylinder lets the designer specify arm geometry freely, staying within the 2.2 Nm load torque limit at a 1 s cycle.
FAQ
Which sensor does JCK40X45KN use and what are its ratings?
The KN code selects the NPN electrical position sensor, rated 10 to 30 V DC with a 2 mm sensing distance. If your controller needs a sourcing signal, use JCK40X45K (PNP); for an air signal use JCK40X45KA, or leave the sensor option blank for none.
What operating data applies to this 45 degree clamp?
Bore 40 mm, opening angle 45 degrees, port PT1/8, operating pressure 0.3 to 0.8 MPa (43 to 116 psi), proof pressure 1.2 MPa (175 psi), output torque 120 Nm at 0.5 MPa, clamping torque 72/120/191 Nm at 0.3/0.5/0.8 MPa, maximum holding torque 380 Nm, temperature -20 to +70 C, air cushion, minimum clamp and open time 1 s each, air filtered to 40 um.