Airtac JCK High Strength Welding Clamping Cylinder JCK40X120
Genuine AirTAC welding clamp cylinder, order code JCK40X120 from the JCK40 range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
- Opening angle120°
- Arm position and clamp armHorizontal arm · No clamp arm
- Sensor and threadNo sensor · 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 JCK40X120
Opening angle is the reason to order this code: the 120 in JCK40X120 sets a 120 degree swing, one step below the 135 degree maximum of the series, so the arm clears well back for loading large panels or for a robot end effector to pass. Because both the arm and sensor fields are blank, you get the bare 40 mm bore crank-slider clamp without a clamp arm and without position sensing.
The mechanism is a toggle link that holds the clamp position even if air is lost, the key safety behaviour of the JCK series in weld fixtures. Torque output is 120 Nm at 0.5 MPa (191 Nm at 0.8 MPa) with 380 Nm holding, through PT1/8 ports at 0.3 - 0.8 MPa (43 - 116 psi), -20 to +70 C, air cushion, 1 s minimum clamp and open time.
Airtac JCK High Strength Welding Clamping Cylinder JCK40X120 Technical Specifications
| Order code | JCK40X120 |
|---|---|
| Product | Welding Clamp Cylinder |
| Opening angle | 120° |
| Arm position and clamp arm | Horizontal arm · No clamp arm |
| Sensor and thread | No sensor · 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
Compare the angle first: JCK40X105 gives a tighter envelope, JCK40X135 the maximum swing (only with an AM1 arm horizontally), while 120 degrees is a mid-range compromise. This code is unsensed and armless; the sensor field accepts K (PNP), KN (NPN) or KA (pneumatic), and arms are AM1 or AM3 in R, C or L layouts. If the opening later proves wrong, the angle can be reset by replacing the adjusting screw rather than reordering the whole cylinder.
Applications
Large-panel weld cells
The 120 degree opening leaves a wide load window for large body panels or deep fixtures while staying one step inside the 135 degree series maximum.
Manual-load welding fixtures
The wide swing gives operators hand clearance to drop parts in and out; the toggle link holds 380 Nm even if air is lost mid-shift.
Angle-adjustable fixture builds
If the fixture layout changes, the 120 degree setting can be changed later by replacing the adjusting screw instead of swapping the cylinder.
FAQ
What are the key figures of the JCK40X120?
Bore 40 mm, opening angle 120 degrees, double acting with air cushion, no fitted arm and no fitted sensor. Ports PT1/8; output torque 120 Nm at 0.5 MPa, maximum holding torque 380 Nm; operating pressure 0.3 - 0.8 MPa (43 - 116 psi); proof pressure 1.2 MPa (175 psi); temperature -20 to +70 C; minimum clamp and open time 1 s each.
How do I add position feedback to JCK40X120?
This code ships without sensing. You can order the sensor variants K (PNP), KN (NPN, 10 - 30 V DC, 2 mm sensing distance) or KA (pneumatic) in the order code, or fit external switches. Confirm the sensor option from the datasheet before wiring.