Talos Bearing

Blog

Technical Insights & Industry Solutions for Precision Bearings

6202ZZ Bearing Material & Heat Treatment: What Makes 52100 Bearing Steel Durable?

08/28/2026

Every 6202ZZ bearing you can buy looks identical on the outside — 15 × 35 × 11 mm, two steel shields, eight balls. What separates a bearing that runs for years from one that spalls out within months is nearly invisible: the material inside and the heat treatment that shaped it. 52100 bearing steel (called GCr15 outside the US) is the high-carbon chromium steel behind roughly 90% of industrial bearings, and the way it is hardened determines the 60–66 HRC hardness that rolling contact demands. This

6202ZZ Bearing Material & Heat Treatment: What Makes 52100 Bearing Steel Durable?

08/28/2026

6 costly bearing selection mistakes overview chart with corrections for type size clearance cage lubrication and fit

Bearing Selection Mistakes: 6 Costly Oversights (Wrong Type, Size, Clearance, or Cage) and How to Correct Them

08/25/2026

Bearing selection is where most premature bearing failures are decided — long before the bearing ever spins. Pick the wrong type, the wrong size, the wrong clearance, or the wrong cage, and no amount of good lubrication or careful mounting will save the component. This guide walks through the six

Press fit force calculation — mounting force must act on the inner ring face, never through the rolling elements or cage

Bearing Press Fit Force Calculation: How to Determine Required Tonnage Without Damaging Cage or Races

08/22/2026

Every maintenance engineer who has pressed a bearing onto a shaft has asked the same question: how much force do I actually need? A press fit force calculation answers that question with numbers instead of guesswork, and it is also the best protection you have against damaging the cage or

grease compatibility thickener matrix chart showing compatible marginal and incompatible thickener pairs including lithium lithium complex polyurea calcium sulfonate aluminum complex and clay

Bearing Grease Compatibility: 6 Essential Rules to Avoid Thickening or Softening When Mixing Different Brands or Base Oils

08/21/2026

Grease compatibility decides whether a bearing keeps running smoothly or fails months early. When two different brands, thickeners, or base oils are mixed, the combined grease can harden into a stiff mass that starves the rolling elements, or soften into a watery film that leaks past the seals. Both outcomes

Bearing clearance test methods: lead wire, feeler gauge, dial gauge shaft lift and displacement sensor setups for measuring residual clearance after mounting

Bearing Clearance Test After Mounting: 4 Practical Methods (Lead Wire, Feeler Gauge, Dial Gauge, Displacement Sensor) to Verify Fit

08/17/2026

A bearing clearance test performed after mounting is the only reliable way to confirm that an interference fit has not consumed the internal play your application needs. Every press-fit or shrink-fit installation removes clearance — roughly 60–80% of the interference value on a solid shaft — and if too much

seal testing IP code structure diagram showing dust protection and water protection digits

Bearing Seal Testing: How to Verify IP Rating Against Dust and Moisture Ingress

08/16/2026

Every sealed bearing carries a promise: keep grease in, keep dust and water out. But how do you actually verify that promise? That is exactly what seal testing answers. Seal testing is the structured process of proving how much dust and moisture a bearing seal can keep out, and for

bearing contamination scale chart comparing sub-micron oil film thickness with micron-level particle sizes

Bearing Contamination Control: How Micron-Level Particles Dramatically Shorten Service Life

08/16/2026

Bearing Contamination Control: How Micron-Level Particles Dramatically Shorten Service Life Every bearing engineer has seen it: a machine that should run for years dies in months, and when the bearing is pulled apart, the raceway is covered in tiny dents. That is bearing contamination in action. Particles measured in microns

Surface roughness Ra Rz lambda chart showing lubrication regimes for a 6205 bearing raceway

Surface Roughness Ra Rz: How Raceway Finish Affects Bearing Running Stability

08/14/2026

Surface Roughness Ra Rz: How Raceway Finish Affects Bearing Running Stability When an engineer specifies a bearing, most of the numbers on the drawing describe dimensions and tolerances — but the surface the rolling elements travel on matters just as much. Surface roughness Ra Rz values are among the strongest

ball bearing hs code structure diagram showing the 6-digit HS chapter, heading 8482, subheading and national tariff extension digits

Ball Bearing HS Code and Tariff Classification: Quick Guide for Hassle-Free Customs Clearance

08/11/2026

Ball bearing hs code is the six-digit Harmonized System number every importer and exporter needs to know before bearings leave the factory. Get it right and customs clearance is routine: duties calculated correctly, documents accepted on the first pass, and no surprise inspection holds. Get it wrong and you face