Nanjing Erji Gear-Cutting Machine Tool Co., Ltd.

Gear hobbing Machines Models

YBN3120A＆YBN3132A＆YBN3150A

MAIN FEATURES

The Models YBN3120A＆YBN3132A＆YBN3150A are Vertical Gear Hobbing Machines designed for generating spur gears,helical gears,worm wheels,sprockets and short spline shafts by the continuous indexing method.

These machine enable axial(i.e.vertical)feed by the climb or the conventional hobbing method.The drive to the vertical feed mechanism is transmitted via a ballscrew pair.

These machines are featured in automatic up-and-down movement of the tailstock and convenient in the machine set-up and maintenance work.The main drive is transmitted at various speeds from ment is performed at various speeds by way of change gears.Their worktables can be hydraulically advanced or withdrawn at a rapid speed for a length of 50mm even at the time when a workpiece of max.dia.Is under cutting operation with a hob of max.diameter.

An automatic workpiece clamping device can be equipped upon request.

Main technical specifications

	YBN3120A	YBN3132A	YBN3150A
Max.dia.hobbed(with counter column)	200	320	500
Max.module hobbed	6	8	8
Max.facewidth	270	270	270
Helix angle	60	60	60
No.of teeth to be hobbed	5-250	5-250	5-250
Max.dia.of hob	140	140	140
Max.length of hob	140	140	140
Max.hob shift	40	40	40
Diameters of hob arbours	22,27,32,40	22,27,32,40	22,27,32,40
Inner taper of hob spindle bore	Morse Taper NO.5	Morse Taper NO.5	Morse Taper NO.5
Hob spindle speeds(at 9 steps)	50-315	50-315	50-315
Axial federates(at 10 steps)	0.46-4.2	0.46-4.2	0.46-4.2
Distance from hob center to worktable	250-550	250-550	250-550
Dia.of worktable	380	380	490
Distance from worktable to counter column center point	365-665	365-665	365-665
Papid advance or withdrawal of worktable(hydraulic)	50	50	50
Pitch dia.of indexing wormwheel ×module	378×5.25	378×5.25	378×5.25
Power of main drive motor(Model YHD132D8/4)	3.5/4.5	3.5/4.5	5.5/7.5
Net weight,approx	5000	5000	5000
Overall dimensions(L×W×H)	240×139×178	240×139×178	240×139×178