H model



NAKANE Live Center

for CNC

Slide back

Rear gap

Model H is prevent deformation of the workpiece due to thermal expansion.

Size : MT.3, 4, 5

　High precision : 0.003mm(T.I.R.)*１

Features
1) Slide-back structure
The slide-back structure utilizing a disc spring to prevent deformation of the
workpiece due to thermal expansion as well as abrasion of the center hole.
The structure is also designed so that excessive load is not applied to the
thrust bearing (patented in several countries).
2) Rigidity
The needle roller is placed closer to the tip, thanks to the larger thrust bearing
employed, so as to withstand heavy cutting.
3) Shape
The shape in the vicinity of the tip forms an acute angle (40°) so as not to
interrupt bite intrusion.

*1 T.I.R. stand for Total Indicator Reading

Variations caused by thermal expansion when turning long workpieces

Dimensions
H model		(mm)											Wt.
	(MT)	a	A	B	C	L	M	D	d'	d	α	α'	（kg）
H - No.3	3	7	32	55.5	85.5	173	5	46.5	8	22	60°	40°	0.79
H - No.4	4	8	40	68	107.8	215.8	6	60	10	27.5	60°	40°	1.61
H - No.5	5	11	54	95	136.7	285.7	8	87	14	38	60°	40°	4.79