What Are SKS Clock Parts and How Do You Identify Them?

What Does SKS Mean in Clock Repair?

A wide range of clocks rely on SKS parts to function smoothly—but what exactly does “SKS” mean in the world of horology? Whether you’re restoring an antique clock or replacing components in a newer model, identifying and sourcing SKS clock parts can be essential to a successful repair.

In this article, we’ll break down what SKS parts are, how they’re used in clock movements, how to identify the right ones, and where to buy them. If you’re a clockmaker, hobbyist, or repair technician, this guide will help you confidently navigate the world of SKS clock parts.

In clockmaking, SKS usually refers to a German parts manufacturer or a style of German-compatible replacement part, particularly those compatible with Hermle and other mechanical movements. While SKS is not a movement maker like Hermle or Kieninger, many people use the term “SKS parts” when referring to replacement parts that fit those European mechanical clock movements.

In short: if you’ve got a German clock movement, especially post-1950, there’s a good chance SKS-compatible parts are what you need.

SKS Parts Replacement Guide:

You’ll most often find SKS-style parts in the following types of clocks:

• Grandfather clocks
• Wall/Mantel clocks

What Types of SKS Clock Parts Are Available?

There are many types of parts that fall under the SKS-compatible category. Here are some of the most commonly replaced ones:

1. Clock Suspension Springs

These thin metal strips hold the pendulum and allow it to swing freely. A broken suspension spring is a common reason a pendulum clock stops ticking.

2. Chime Hammers and Rods

If your clock no longer produces sound or sounds muted, you may need to replace a broken hammer or bent chime rod.

3. Pendulums and Leaders

Clocks with German movements often use a particular pendulum length, measured in centimeters. Matching the correct pendulum and leader is essential for keeping accurate time.

4. Clock Hands

SKS-compatible hands often come in a bushing-style hole, and they’re available in multiple lengths. Matching them to your movement model ensures proper fit and function.

5. Bushings and Gears

When a clock runs erratically or stops intermittently, it might be due to a worn-out bushing or gear. These tiny components are available as SKS-compatible replacements and can extend the life of the entire movement.

How Can You Tell if Your Clock Uses SKS-Compatible Parts?

Here’s how to identify whether your clock needs SKS-style parts:

1. Look at the Movement Plate Number – Most German movements have a number engraved on the back plate (e.g., 1161-853 or 340-020). This number helps match parts exactly.
2. Check the Origin – If your movement says “Germany” and is post-1950, there’s a high chance SKS-compatible parts will fit.
3. Match by Size and Function – If you’re replacing hands, leaders, or pendulums, always match measurements down to the millimeter or centimeter.
4. Consult a Professional – If you’re unsure, snap a photo of your movement and contact an expert before ordering. This step helps avoid delays and returns.

What Tools Do You Need to Install SKS Clock Parts?

Repairing or upgrading SKS-style clock components typically requires the following tools:

• A clock hand puller and press tool
• Small screwdrivers (flat and Phillips head)
• Synthetic clock oil
• Calipers for measuring shafts or gear diameters
• A let-down tool if you’re working with mechanical spring-driven movements

These tools help you install new parts cleanly, without damaging the movement or surrounding case.

Can You Mix SKS Parts with Non-German Movements?

In general, no. SKS-compatible parts are designed for German-style movements and won’t fit American, French, or Asian-made movements without modification. Always check movement markings and style before ordering.

What If I Don’t Know What I Need?

If you’re not sure which SKS-compatible part to order, follow these steps:

1. Photograph the movement, front and back.
2. Note all stamped markings or model numbers.
3. Measure any pendulums, hands, or parts you’re trying to replace.
4. Send your photos and details to a clock specialist.

Providing this info upfront helps you get the right part the first time—saving money and time on returns.

Why Use this SKS Parts Replacement Guide from Clockworks.com?

At Clockworks.com, we offer one of the most extensive selections of SKS-compatible parts online. Whether you’re looking for a hard-to-find chime rod, a replacement hand set, or just a new suspension spring, we likely have it in stock. Bulk discounts are available for schools, makers, and repair professionals.

We also provide detailed installation guides, measurement tips, and email support to help you match the right part to your clock movement.

SKS Parts Replacement Guide, Conclusion: Get the Right SKS Clock Parts with Confidence

If you’re repairing a German-made clock or restoring an heirloom with a mechanical movement, understanding SKS clock parts gives you a head start. Always verify movement markings, take measurements, and ask questions before buying. With proper identification, high-quality tools, and this SKS Parts Replacement Guide, your repair will go smoothly.

For personalized assistance or to place an order, visit Clockworks.com or email us at clockworks@clockworks.com.

Updated on: 12/07/2025