Mainspring Help

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When a mainspring breaks within a clock movement, it could cause damage. This damage could be within the movement itself or to the clock case. However, it is uncommon, but sometimes even the sides of the wood case can sustain damage when a mainspring breaks. As for the movement itself, we need to check the gear teeth and the gear… View Product

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The Loop-End clock mainspring description consists of a long flat spring with a loop on one end. This loop wraps around the outer plate pillar of the movement. In other words, this is the type of mainspring that can be seen. Thus, it is not inside a barrel. Likewise, if the spring is in a barrel, the mainspring can’t be… View Product

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The type of springs that are wound in a brass barrel enclosure is known as a Hole End Mainspring. First, measure the Hole End Mainspring by taking the spring out of the brass clock movement barrel. Then the mainspring has to come out of the brass barrel in order to measure it. There is no other way to do this… View Product

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When a clock mainspring breaks the impact can cause damage to the movement. This damage would be within the parts of the gear train itself. It is possible that the pivots that go into the outer plates or the arbors have bent. So it is best to check the clock movement’s condition before ordering a clock mainspring. If working with… View Product

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For a Hole-End Clock Mainspring replacement-service, all you have to do is send clockworks the clock barrel. Once we have the barrel, the old spring will be taken out. Then it is just a matter of installing the new mainspring. When sending in the mainspring, be please sure to leave the Hole-End clock mainspring within that barrel. The price for… View Product

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Often a clock mainspring barrel can be taken out without disassembling the clock movements outer plates, on Hermle or Kieninger clock movements. The mainspring will also still stay inside the barrel. The mainspring let down tool allows the release of the mainspring with the fist rather than the fingers. Put the mainspring let down tool over the square post the… View Product

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Barrel Number Mainspring Dimensions MM 10 17 x .45 x 1490 11 17 x .42 x 1500 20 & 56 17 x .38 x 1200 21 & 50 17 x .40 x 1200 31 12 x .34 x 1150 32 12 x .42 x 1100 33 12 x .32 x 1150 40 17 x .38 x 1100 41 21 x… View Product