1. The first two digits encoding: the number teeth of externally toothed gear.
2. The encoding three or four numbers: the number of internal gear teeth.
3. coding fifth digits: the pore size of the gears.
4. Last encoded in English: A: tight B: loose .
2A indicates that the central axis is 1.95mm; it is tightly fitted with the optical axis of 2mm and rotates together with the optical axis.
2B indicates that the central axis is 2.05 mm; with the optical axis of 2 mm, it is loosely fitted and is free to rotate on the optical axis.
For example: Size of 44102B: 44 external teeth, 10 internal teeth, 2MM aperture, loose axle.
Gear diameter: (44+2)X 0.5(MM)=23MM Gear outer diameter is 23MM
2. The encoding three or four numbers: the number of internal gear teeth.
3. coding fifth digits: the pore size of the gears.
4. Last encoded in English: A: tight B: loose .
2A indicates that the central axis is 1.95mm; it is tightly fitted with the optical axis of 2mm and rotates together with the optical axis.
2B indicates that the central axis is 2.05 mm; with the optical axis of 2 mm, it is loosely fitted and is free to rotate on the optical axis.
For example: Size of 44102B: 44 external teeth, 10 internal teeth, 2MM aperture, loose axle.
Gear diameter: (44+2)X 0.5(MM)=23MM Gear outer diameter is 23MM
