Tony Maffeo

Angular contact bearings are the precision bearings that support the rotating shaft inside every CNC spindle. Unlike standard radial bearings, angular contact bearings are designed to handle combined radial and axial (thrust) loads simultaneously — the combination of forces that spindles generate at speed and under cutting load. Selecting the right angular contact bearings for […]

A CNC aggregate — also called a machining aggregate or aggregate head — is a tool-holding unit that attaches to a CNC machine’s main spindle to perform operations that the spindle cannot do alone, including angular cutting, multi-blade sawing, horizontal boring, and 90° routing. Aggregates multiply what a single-spindle CNC machine can do without requiring

Regular CNC spindle maintenance is the single most cost-effective action a machine shop can take to avoid unplanned downtime. Most spindle failures — bearing wear, contamination, overheating — are preventable with a consistent maintenance routine. This checklist covers the 10 checks your team should perform every 500 hours of spindle operation. Save this. Print it.

CNC spindle repair typically costs between $500 and $6,000, depending on the spindle brand, model, extent of damage, and the service tier you choose. As a benchmark, professional repair runs 25–35% of the cost of a new spindle — making it the right choice in the vast majority of cases. At HS Spindles, we repair

Unexpected spindle failure can bring production to a standstill. Whether you operate a single CNC machine or manage an entire manufacturing facility, every hour of downtime affects productivity, delivery schedules, and operating costs. The good news is that modern spindle repair services offer different turnaround options to suit a variety of business needs. Not every

Every CNC machine relies on its spindle to deliver precision, speed and consistent performance. While modern spindles are built to withstand demanding production environments, they are not maintenance-free. Ignoring routine inspections can lead to reduced machining accuracy, unexpected breakdowns and expensive repairs. A proactive approach to CNC maintenance helps manufacturers minimise downtime, extend spindle life

A spindle is the heart of any machine tool. Whether you are grinding precision components, milling complex parts, or routing wood and composite materials, spindle performance directly affects accuracy, surface finish, productivity, and tool life. When a spindle begins to show signs of wear, performance can decline rapidly, leading to costly downtime and reduced production

Ask ten CNC shop managers what spindle dynamic balancing is and you’ll get ten different answers. Some will tell you it’s something that happens during spindle repair. Some will tell you it’s about reducing vibration. Some will tell you it’s important for high-speed work. A few will tell you honestly that they’re not entirely sure

The question comes up on almost every call we take from a new customer: “What’s it going to cost?” It’s a completely reasonable question. Your spindle is down, you need to make a decision, and you want a number. The problem is that spindle rebuilding cost is one of those figures that genuinely cannot be

Learn the differences between ER16, ER20, ER25, ER32, and ER40 collets through the detail ER collet sizes guide by an expert Mechanic. – HS Spindles