[1] The F12 series and FB80 model semi-universal dividing heads are the most important attachments for millers. With the help of these dividing heads, direct indexing and simple indexing can be performed on the workpiece and the  workpiece can be rotated to any angles as desired.
[2] The operation handle of model FW80 is set on the left, and the operation handle of F12 series is set on the right.

Parameter		FB80	F12100	F12125	F12160
Center height, mm		80	100	125	160
Swivel angle of spindle from its horizontal position (upward), Deg		≤90	≤90
Swivel angle of spindle from its horizontal position (downward), Deg		≤6	≤5
Rotating angle of spindle responding to one revolution of handle, Deg		9 (540 grad., 1 each)
Min. reading of vernier, Sec		10
Worm gear ratio		1:40
Taper of spindle bore		MT3		MT4
Width of positioning key, mm		14		18
Diameter of short taper of spindle nose for mounting flange, mm		36.541	41.275	53.975	53.975
Number of holes on indexing plate	1st plate	24, 25, 28, 30, 34, 37, 38, 39, 41, 42, 43
	2nd plate	46, 47, 49, 51, 53, 54, 57, 58, 59, 62, 66
Individual indexing error of the spindle for one revolution of handle, Sec		60	±45
Cumulated error at any 1/4 periphery of spindle, Min		70	±1
Max. load capacity, Kgf		80	100	130	130
Net weight, Kgs		26	57	83.5	100
Gross weight, Kgs		32	69	96	114
Packing size (LXWXH), cm		48X36X22	61X46X26	54X46X31	71X50X34