Horology Zone
English Version Traditional Chinese Version Simplified  Chinese Version
Watch Repair Tools Shop
Basic Knowledge
   
Other Knowledge
star Mechanical Clock Model - �j�H������ Vol. 80
star DIY
Watch Winder
   
star Alarm Timer
star Anti-magnetic watch
star Atomic Watch
star Balance Wheel
star Bluing
star Casio Waveceptor
star C.O.S.C.
star Choosing Watch
star ETA
star Geneva Seal
star Glow In The Dark
star Marine Clock
star Moon Phase
star Quartz Caliber
star Seiko Spring Drive
star Shock Resistance
star Sundial
star Stainless Steel
316L, 904L
star Tachymeter
star Time Lock
star Time Zone
star Tourbillon
star Watch Adjust
star Water Proof
star Watch Crystal
   
star Horology A ~ Z
   
Reference
   
 
   
   
Royalty Free Images
 
 
 
 
Contact Us
Shock Resistance
 

G-force (gravitational force) is the force pulling an object toward the center of the earth. Normally, we are suffering a 1G when we are stationary. When a car is cornering or accelerating, the driver suffers more than 1G; a 10-pound human head will weigh 30 pounds under 3G acceleration.

1G = 9.8 m/sec2, 1Gs = 9.8 m/sec

A golf swing is about 5000 Gs; therefore, do not wear an mechanical watch when playing golf.

According to the ISO 1413 standard, the shock resistance test is conducted by using a pendulum impact testing machine. The mechanism sets off a circular movement which brings the pendulum to hit the watch. When the watch is hit by the pendulum, the watch will "fly" at the presetted acceleration, e.g. 5000 Gs.

1st shock is directed against the side of the case, parallel to the plane of the watch, on the 9 o'clock side.
2nd shock is directed against the glass, perpendicular to the plane of the watch.

Pendulum Impact Testing Machine

Pendulum Impact Testing Machine

Engineer Hydrocarbon
Ball Watch:
Engineer Hydrocarbon series: 7500 Gs
 

Your help and support is deeply appreciated. Please add my link to your web-site

Banner Link
Horology Zone <a href="http://horologyzone.com"><img src="http://horologyzone.com/image/badge/bagde2.gif" width="116" height="49" border="0" alt="Free Watch School"></a>
Text Link
Free Watch School <a href="http://horologyzone.com">Free Watch School</a>