The How’s and Whys of High Torque Clock Movements

Clock movements are the heart and soul of any watch, whether analog or electronic, whether modern or antique. Clock movements are likewise known as electric motors, and also their feature is to revolve the hands on a continual basis so that the clock always depicts the proper time. Thus, we’re speaking about a rotating electric motor that needs to use a particular amount of minimum torque upon its load, the hands, to complete its job.

Clock movements are standardized according to the most generally utilized applications. What this indicates is that the electric motor is designed to supply sufficient torque to cover hand weights as much as a given restriction but can not revolve minute hands (much heavier than hour hands) weighing more than this.

In method the weight limitation for the most popular clocks corresponds to a size of concerning 5 inches. To put it simply, hands with sizes greater than 5 inches will certainly in general existing also heavy a load for the electric motor, creating the turning to drag and even stop altogether. Hands much shorter than the limitation will certainly trigger the electric motor not a problem.

But the material utilized to make the hand also enters play. Light metals such as tin or aluminum equip a smaller load than ones made from brass, as an example. So the 5-inch criterion is a catchall amount, and also conventional movements may have not a problem transforming light-weight hands longer than this.


The standard method of structure movements was simply mechanical. The driving pressure was a tightly wound spring or a hanging weight putting pressure on a wheel to turn. To prevent the wheel from transforming easily and too swiftly it was managed through an escapement and pendulum in mix.

The system was adjusted such that the pendulum ticked when a second. Gears in fixed ratios developed a network all driven by the flywheel, and the numerous hands were placed on pins that revolved at exactly the right rate.

Today’s clock movement runs digitally instead of mechanically. A quartz crystal creates resonances that happen at a dependably identified regularity. Mathematical counting signs up accomplish neighborhood of the crystal frequency right into ideal timekeeping values.


The hands in the electronic variation operate the same way as in the mechanical variation, yet powering their rotations is easier. As opposed to a drivetrain, pendulum, and also escapement plan the power is electrical and the rotational frequency is originated from the counting registers crossing mathematical limits.

Currently, we are utilized to visualizing traditional clock dials when we talk about hand position, yet that’s not constantly the instance. There are watches that in fact reveal weather condition phenomena, such as temperature or humidity or especially trend degree. Occasionally these appear as dedicated faces, and also often a special dial-and-hand arrangement is integrated right into a bigger clock dial.

An additional aberration from the norm is the 24-hour analog clock. Here, the hr hand makes a full circle daily as opposed to twice a day. An unique dial is made use of revealing labels for the complete set of 24-hour, commonly needing a larger size and likewise bigger hands.


Naturally, when the clock face is unusual, the motion has to be calibrated to it to make sure that the hands line up properly. But regardless of the application, all hands have to be turned, some a complete 360 levels, others back and forth with a restricted arc. And also such rotation needs torque from the motor.

As stated in the past, basic motions are geared up to deal with tons that are frequently found in the majority of applications. But larger clocks (higher than, state, 14" in diameter) make use of longer as well as therefore heavier hands than regular. Additionally, normal-sized hands constructed out of much heavier materials could go beyond the load resistances of a basic motion.

But it is often the situation that motion capability is copied in a high torque variation. Thus the individual should look for such different versions if necessary. And that’s all one requires to know about high torque clock movements DIY clock replacement parts