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ToothLock® Ear Clamp 293
ToothLock®
The original “ToothLock®” feature of locking with teeth is quite high and strong enough for the most demanding connections, which offers constant compression rates and unusual expansion resistance. It also supports impact and vibration resistance and helps the clamp withstand thermal stress. ToothLock® is designed as a self-locking mechanism that improves performance thanks to reduced back flexing. Balances component tolerances with multi-tooth locking position.
Safety Hook
The safety hook securely holds the clamp geometry together during transport. Clamp ear (tightening element) the clamp is tightened with the help of tools designed by Oetiker, bringing the Oval corners of the bottom of the "ear" closer together. The maximum diameter reduction is proportional to the open "ear" width (s). The maximum theoretical reduction in diameter is calculated by a formula
Clamp Sizing
The outlines are as follows: to determine the correct clamp diameter, use the hose connection material (ex. push on the nipple and then measure the outside diameter of the hose. Select a clamp whose size range average value is slightly larger than the outside diameter of the hose. To ensure a full ToothLock® grip and sufficient tightening of the clamp, the nominal diameter must be reduced by at least 2.2 mm (>40% of the original ear width) and the correct tightening force must be applied during installation.
Assembly Proposals
The clamp ear should be tightened at a homogeneous rate not exceeding the recommended maximum tightening force. This ensures that the clamp tension remains constant without overloading the components of the coupled group and clamps. Oetiker calls this method of Assembly "force priority". The force priority method ensures that the tolerance balancing features of the clamp are functional for each assembly. This ensures that the resulting radial force remains virtually the same for each assembly, regardless of the component's dimensional differences. If the ELK electronically controlled pneumatic pliers of Oetiker are used in force priority mode, it is possible to monitor the installation to ensure reproducible installations of the appropriate force.
Assembly Instructions
Place the pliers ' jaws on the clamp “ear” to ensure proper installation. Close the jaws of the pliers to squeeze the handcuff ear. This reduces the diameter of the ToothLock® ear clamp. After the ear is cuffed, the instrument can be removed when the pliers jaws are opened. To ensure that the full ToothLock® grip and clamp are sufficiently tightened, the nominal diameter must be reduced by at least 2.2 mm (minimum diameter reduction) and the correct tightening force must be applied during installation.
Tightening Force
In principle, the choice of tightening force is closely related to the surface pressure of the material to be assembled, or the compression required. The resistance the clamp is subjected to corresponds to the applied force, so the defined tightening force is significantly reduced when soft materials are squeezed. The maximum tightening force is given in the table on the next page according to the material sizes and belongs specifically to thermoplastics.
Block Tightening
When the mounting force tightens the ear completely, block tightening results in two earlobes coming into contact (vertical elements between the ear pit and clamp radius). When this occurs, the absorption of the mounting force is achieved by the compression of the feet rather than by the transfer of the mounting forces to the clamped parts. Block tightening should be avoided if mounting forces are to be measured.
ToothLock ® Technology: extremely high and constant compression ratios, superior radial load performance, high resistance to pressure and expansion
360° StepLess®: homogeneous compression, powerful versatile sealing
Expanded ear width (17 mm): increased aperture for ease of mounting, extended diameter range
Safety hook: prevents it from opening unexpectedly during transport
Closed lock: supports smooth external contour undamaged Assembly
Non-Burr slitting edges: less risk of damage to clamped parts
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