執筆者 ep | 2026 年 6 月 25 日 | ヘリカルギア
Helical Gear Service Factor — KA Application Factor, AGMA Classification and Selection The service factor (SF or KA) applied to a helical gear specification is not a safety margin that can be chosen conservatively without consequence — it directly multiplies the...
執筆者 ep | 2026 年 6 月 25 日 | ヘリカルギア
Helical Gears in Compressor Gearboxes — Centrifugal, Screw and Integrally Geared Types Compressor gearboxes represent one of the most demanding helical gear applications — not because of high torque (compressor torque is moderate), but because of the combination of...
執筆者 ep | 2026 年 6 月 25 日 | ヘリカルギア
How to Select a Helical Gear Manufacturer — Capability Checklist and Quality Verification A helical gear that arrives with a certificate claiming DIN Class 5 but was never measured on a gear analyser is not a DIN Class 5 gear — it is an uncertified gear with a piece...
執筆者 ep | 2026 年 6 月 25 日 | ヘリカルギア
Helical Gear ISO 6336 Strength Calculation — Contact Fatigue and Bending Fatigue Rating Explained Every helical gear drive must pass two independent fatigue checks: pitting resistance (contact fatigue, σ_H) and tooth root bending strength (σ_F). ISO 6336 provides the...
執筆者 ep | 2026 年 6 月 25 日 | ヘリカルギア
Helical Gear Hardness Testing — HRC, HB, HV Measurement and Case Depth Verification Hardness is the single most important measurable property on a finished helical gear — it determines σ_H lim (contact fatigue limit) and σ_F lim (bending fatigue limit) directly, and...
