307 series Self tapping cutting thread insert with cutting hole

Self tapping thread insert, also known as ensat thread insert, is a new type of fastener that enhances thread strength. The self tapping thread insert has tooth patterns both inside and outside. The self tapping thread insert is embedded in softer materials such as plastic, aluminum alloy, cast iron, copper, etc., which can form high-strength internal threaded holes. The self tapping thread insert can also repair damaged internal threads.

307 series self-tapping insert is one of the structures of self-tapping insert, this structure has three chip extraction holes, so it is also known as 3-hole self-tapping insert.

1. The self tapping thread insert has the ability of self tapping and automatic chip removal, and the base material does not need to be pre tapped.

2. The self tapping thread insert has a large contact surface with the finished product and can withstand strong tensile force. Low strength materials can be used in product design.

3. The self tapping screw insert has a repairing effect on the mother thread of the broken tooth, and using a slotted self tapping screw insert can continue to use the same screw

4. The self tapping thread insert has excellent airtightness and shock resistance, which can prevent loosening and improve the connection strength with the base material.

5. The self tapping thread insert installation is simple and fast, requiring only one assembly tool, with low cost and almost no defect rate.

Table of dimensions for self-tapping threaded inserts

Manual Installation:
Use the special thread insert installation tool. Refer to the figure below for the specific operation method. The end of the tool in the figure is a quadrangle head which can be connected with a manual tapping wrench.

Electric Installation:

1. Position the workpiece exactly,so that drilling and machines -spindle axially parallel to each other lie (do not tilt).Machine to the exact screwing depth adjust (approx. 0.1 to 0.2 mm under the workpiece surface ).

2. Machine operating lever actuate. When you start screwing in, the rota table outer sleeve of the tool must be in line with what is visible on the outside stop pins so that they of these clockwise with -is taken.

3. Add Self tapping thread insert to the tool (Slot or cutting hole according to bottom) and 2 to 4 turns hold on for a long time.

4. Machine operating lever continue to operate and take the tool with you Guide Self tapping thread insert to the hole until the Self tapping thread insert gets into the borehole cuts in. The further turning takes place without feed actuation.

5. Switch on reverse (depending on type and the device is constructed this automatically using a limit switch or depth finder). Hard landing of the tool onto the workpiece avoid at all costs; otherwise exists

Risk of breakage for tools and Self tapping thread insert. In addition, The play-free tight fit of the Self tapping thread insert is destroyed and the pull-out strength is reduced. The screwing speed may need to be adjusted to the required speed Switchover time can be adjusted.