NSK Cartridge Spindle For NC Lathes

Types and Features

• High-rigidity L series (L-5, L-6)

Same bearing arrangement as the G series for machining centers. High radial rigidity is achieved with a double-row cylindrical roller bearing incorporated in the fixed side. A high-speed angular contact ball bearing with a contact angle of 30° for thrust load provides axial rigidity along with high-speed operation. The double-row cylindrical roller bearing integrated in the free side provides a large load capacity and ensures smooth axial movement against shaft elongation caused by rising temperatures.



 

	Shaft-end specifi- cation (JIS)	Max. rot. speed (min−1)	Rigidity (N/μm) (reference)		Allowable static axial load (N)	Spindle weight (approx.) (kg)	Average power consumption (kW)
			Axial	Radial (point A)
L-5	A2-5	5000	353	333	41200	60	5.5
L-6	A2-6	4000	451	539	61800	80	7.5

	D	D1	D2	D3	M	M1	M2	N	d	d1	d2	d3	d4	d5
L-5	170	220	195	104.8	20	14	M65 × 1.5	M10, 22 depth	82.563	80	70	133	65	55
L-6	200	260	235	133.4	20	14	M80 × 1.5	M12, 25 depth	106.375	100	90	165	80	70

	d6	d7	d8	l	l1	l2	l3	l4	l5	l6	l7	l8	l9	l10	l11	K
L-5	50	42	45	503	13	48	26	283	133	13	100	34	25	55	35	12 × 5 × 50 l
L-6	60	54	60	574	14	55	30	315	160	13	120	35	25	60	35	12 × 5 × 53 l