Airtac JCK High Strength Welding Clamping Cylinder JCK40X90KN
Genuine AirTAC welding clamp cylinder, order code JCK40X90KN from the JCK40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Opening angle90°
- 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 JCK40X90KN
JCK40X90KN decodes to a 40 mm bore JCK double-acting power clamp with a 90 degree opening angle and no clamp arm, so you fit the lever that suits your fixture. A toggle-link crank slider mechanism holds the clamp position even if air is lost, and the catalog rates 120 N.m output torque at 0.5 MPa with 380 N.m maximum holding torque.
The KN suffix means an NPN electrical position sensor is built in, switching 10-30 V DC at a 2 mm sensing distance, and with no G suffix the ports are PT1/8. Operating pressure is 0.3-0.8 MPa (43-116 psi) with 1.2 MPa (175 psi) proof pressure, -20 to +70 C temperature, air cushion, and minimum clamp and open times of 1 s each.
Airtac JCK High Strength Welding Clamping Cylinder JCK40X90KN Technical Specifications
| Order code | JCK40X90KN |
|---|---|
| Product | Welding Clamp Cylinder |
| Opening angle | 90° |
| 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 this code when 90 degrees of horizontal swing is the right middle ground: it opens further than the JCK40X75KN but folds flatter than the JCK40X105KN, both of which share the same NPN sensor and PT thread. If your PLC input cards are PNP, order JCK40X90K instead, or JCK40X90KA for the pneumatic sensor version. Since this code carries no arm, check the arm you plan to fit against the catalog load-torque limit of 2.2 N.m at a 1 s cycle and 3.3 N.m at 2 s; AM1 and AM3 arms in R, C or L hole layouts can be specified in the code, with AM1 reaching 135 degrees horizontally and AM3 stopping at 105. JCKV40X90KN is the vertical-arm variant of this same configuration.
Applications
Fixtures with your own lever
Welding and assembly jigs where the shop makes its own clamp lever: the blank arm field leaves the interface open, while the 90 degree horizontal swing clears the part-loading path.
PLC clamp-position monitoring
Cells wired for sinking inputs: the built-in NPN sensor reports clamp or open position to the controller, switching 10-30 V DC at a 2 mm sensing distance.
Spot welding clamping
Resistive welding stations where the joint must stay shut under electrode reaction: the toggle-link lock gives 380 N.m holding torque even if air pressure drops, with PT1/8 air connections.
FAQ
What are the key figures of the JCK40X90KN?
40 mm bore, double acting, PT1/8 ports, 90 degree opening, no clamp arm, NPN electrical sensor (10-30 V DC, 2 mm sensing distance). Output torque 120 N.m at 0.5 MPa (72 N.m at 0.3 MPa, 191 N.m at 0.8 MPa), maximum holding torque 380 N.m, 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, filtered air to 40 um.
Can I add a clamp arm or change the opening angle later?
Yes. Arms AM1 and AM3 come in R, C and L hole layouts with 15 mm or 45 mm offset, and the catalog lists a horizontal AM1 arm up to 135 degrees and AM3 up to 105 degrees. The opening angle itself is changed by replacing the adjusting screw, so the 90 degree setting set in this code is not permanent.