Essential Spare Parts for Deep Hole Drilling Machines

Deep hole drilling machines are specialized equipment. When a part fails, you can’t always get a replacement quickly. Having the right spares on hand can mean the difference between hours of downtime and days. Here’s what I’ve learned about stocking spares. Critical Spares These are parts that fail without warning and cause immediate downtime: Part Why It Fails Cost Lead Time Rotating union seal Wear, normal $50-$200 2-5 days Coolant hose Burst from pressure cycling $100-$500 1-3 days Guide bushing Wear, normal $50-$200 1-5 days Spindle drive belt Fatigue $100-$300 2-5 days Door interlock switch Coolant contamination $50-$150 2-5 days I keep at least one of each of these on hand for every machine. ...

June 11, 2026 · Engineer at the Deep Hole