16/11/2025
MAIN SPRINGS ARE THE HEART OF YOUR SPRING DRIVEN CLOCKS, IT’S WHAT MAKES YOUR CLOCKS TICK.
Don’t try and save on changing main springs and chime and strike springs on your clocks – you’re only courting disaster.
1. Release the power of the spring that requires change.
2. Remove the barrel, if you have not done this before don’t even try it, its extremely dangerous and cause serious hurt to you and those around you take it to a qualified clock technician.
3. Measure the length, width, and strength of the spring.
4. To measure the strength you’ll require a micrometer. The thickness of the spring is its strength.
5. Replacement . Always use a spring of the same strength or one that is about +- 5% in thickness, the lower it is the better, try the lower – option so that it is not too strong for the gear train as it may damage the gears with too much tension. Anything more than 5% is disaster waiting to happen, many clock repairers use back the old broken spring by punching a whole on the hole end. The problem with that is your clock will run for a shorter span of time.
6. If you can’t find the exact spring with the same strength, try consulting us, we’ll try and find you one. You have to give us the proper measurements meaning; internal height of the spring barrel, measured with a digital caliper, the height of the spring also measured with the caliper, and the thickness of the spring measured with a micrometer. The length can be determined on our end if you can’t measure it but please provide the diameter of the spring barrel.
7. Clock technicians normally try and reuse the old broken spring by punching a new hole at the point the old spring is broken. This is not safe, some technicians try and heat the end with a blow torch trying to anneal the end. Unless you can measure the correct heat to anneal the metal depending on the composition of the metal you use and the correct time to apply that heat to the metal spring, you are courting trouble and putting your drive train at risk. Annealing requires proper metallurgical advice and even ewe Are not qualified, So our advice is to use a new spring and keep your antique clock which may well be an heirloom safe and working in good order.
8. In Kienzle and some other German brands you’ll find you have strong springs especially for the chime barrels, this is secured by two clicks to hold the barrel in place if the spring bursts or a wheel breaks, but makes winding these clocks a bit of a task, it’s a safety feature in all respects.
OUR ADVICE
If you have a broken spring and require a new one contact us, at +60162203771 or send us a message here.
We also handle major repairs and service of clocks plus total restoration works.