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Timex M31

 
Timex M31 |

Timex M31

Description

The Timex M31 is a selfwinding movement, which bases on caliber Timex M24.
The selfwinding mechanism consists of an excenter rotor, which winds the movement with the help of a planetary gear.

Timex M31: movement view without oscillating weight

movement view without oscillating weight

Technical data

Manufacturer:Timex
Caliber:M31
Size:13'''
A/h:18000
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Bridge
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever, escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Construction type:pillar construction
Winding mechanism:rocking bar winding system
Features:
  • SCD (direct center seconds)
  • AUT (selfwinding)
Mentioning in literature (years): 1963 - 1966

Usage gallery

Timex M31: Timex "Self-Wind" gents watch model 4014

Timex "Self-Wind" gents watch model 4014


Related Movements

Timex M24:
base caliber with direct center seconds indication, often unused
Timex M25:
M24 with date indication (slowly advancing) with small numbers
Timex M27:
M24 with day-date with space inbetween and instant date change
Timex M31:
M24 with automatic
Timex M32:
M24 with automatic with slowly advancing date indication with small numbers
Timex M33:
M24 with automatic, day-date (with space inbetween) and instant date change
Timex M72:
base caliber with with 21 jewels, based on M24
Timex M74:
M72 with automatic
Timex M78:
base caliber, different bridge shape and movement-side screws, otherwise based on M24
Timex M100:
M78 with simpler ratchet and dial mounted on own plate
Timex M101:
M78 with date indication with larger numbers
Timex M102:
M78 with day-date indication with small space inbetween
Timex M104:
base caliber with bridge with more holes, otherwise based on M24
Timex M105:
M104 with larger date indication and simpler ratchet
Timex M108:
M104 with automatic and larger date indication
Timex M114:
base caliber with bridge with more holes, otherwise based on M78
Timex M116:
same as M104

Links

Other movements from Timex