55049222
DRAW-SPRING
The 550 492 22 DRAW-SPRING is a small but critical component, often found in feed or rotation assemblies. It ensures proper pawl engagement, preventing unwanted movement or slippage. A worn spring can lead to noticeable clunking or inconsistent operation, making timely replacement key for rig stability.
Description
550 492 22 DRAW-SPRING is usually found tucked away in a feed motor assembly or sometimes in a rotation unit, where it pushes against a pawl. That pawl then engages with a ratchet wheel or a gear, essentially holding things in place or controlling…
Full Technical Description
550 492 22 DRAW-SPRING is usually found tucked away in a feed motor assembly or sometimes in a rotation unit, where it pushes against a pawl. That pawl then engages with a ratchet wheel or a gear, essentially holding things in place or controlling movement in one direction. Think of it like a little gatekeeper, making sure the feed doesn't slip back or the rotation doesn't free-wheel when it shouldn't.
When this spring starts to get tired or breaks, you'll usually notice things getting a bit sloppy. If it's in the feed, you might hear a clunking noise as the pawl struggles to engage properly, or the feed might even creep a bit when it's supposed to be locked. In a rotation unit, you could get inconsistent indexing or even some back-drive if the pawl isn't holding firm. It's one of those small parts that causes surprisingly big headaches.
Replacing one of these isn't usually a huge job, but it's important to get it right. Always check the pawl itself for wear, not just the spring. Sometimes the pawl's pivot pin gets grooved, or the engagement teeth are rounded off, and a new spring alone won't fix the issue. Also, make sure you don't over-stretch the new spring during installation; that's a common mistake that shortens its life right off the bat.
Applications
- Underground drilling jumbos
- Mining and tunneling
- Hydraulic control systems
- Rock drilling spare parts
Specifications
| Brand | Sandvik |
|---|
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