ID : 5293

Selection of Accuracy and Clearance

Accuracy grade

Positioning accuracy ± 0.10/700 (mm)

From the table below,

Accuracy grade : C5

E = ± 0.040/1000 (mm)

e = 0.027 (mm)

Accuracy grade			C0		C1		C2		C3		C5
Screw part effective length (mm)	more than	or less	±E	e	±E	e	±E	e	±E	e	±E	e
	-	100	3	3	3.5	5	5	7	8	8	18	18
	100	200	3.5	3	4.5	5	7	7	10	8	20	18
	200	315	4	3.5	6	5	8	7	12	8	23	18
	315	400	5	3.5	7	5	9	7	13	10	25	20
	400	500	6	4	8	5	10	7	15	10	27	20
	500	630	6	4	9	6	11	8	16	12	30	23
	630	800	7	5	10	7	13	9	18	13	35	25
	800	1000	8	6	11	8	15	10	21	15	40	27
	1000	1250	9	6	13	9	18	11	24	16	46	30
	1250	1600	11	7	15	10	21	13	29	18	54	35
	1600	2000	-	-	18	11	25	15	35	21	65	40
	2000	2500	-	-	22	13	30	18	41	24	77	46
	2500	3150	-	-	26	15	36	21	50	29	93	54
	3150	4000	-	-	30	18	44	25	60	35	115	65
	4000	5000	-	-	-	-	52	30	72	41	140	77
	5000	6300	-	-	-	-	65	36	90	50	170	93
	6300	8000	-	-	-	-	-	-	110	60	210	115
	8000	10000	-	-	-	-	-	-	-	-	260	140
	10000	12500	-	-	-	-	-	-	-	-	320	170

Source : NSK catalog

Repeat positioning accuracy : ± 0.010 (mm)

Min. resolution : 0.01 mm/pulse

From the above,

Shaft direction clearance: T clearance 0.005 (mm) or less

		Shaft direction clearance
Accuracy grade		Z	T	S	N	L
		0 mm (Pre-load)	0.005 mm or less	0.020 mm or less	0.050 mm or less	0.3 mm or less
	C0	C0Z	C0T	–	–	–
	C1	C1Z	C1T	–	–	–
	C2	C2Z	C2T	–	–	–
	C3	C3Z	C3T	C3S	–	–
	C5	C5Z	C5T	C5S	C5N	–
	C7	–	–	C7S	C7N	C7L

ID : 5293