Degree Accuracy

Table 1 Lead Angle Accuracy (Permissible Values)

		Percision Ball Screw
												Rolled Bass Screw
Accuracy grades		C0		C1		C2		C3		C5		C7	C8	C10
Effective thread length		Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Travel distance error	Travel distance error	Travel distance error
Above	Or less	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Representative travel distance error	Fluctuation	Travel distance error	Travel distance error	Travel distance error
-	100	3	3	3.5	5	5	7	8	8	18	18	±50 / 300mm	±100 / 300mm	±210 / 300mm
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

Unit : µm

Note : Unit of effective thread length: mm

Table 2 Fluctuation in Thread Length of 300 mm and in One Revolution (permissible value)

Accuracy grades	C0	C1	C2	C3	C5	C7	C8	C10
Fluctuation/300	3.5	5	7	8	18	-	-	-
Fluctuation/2π	3	4	5	6	8	-	-	-

Unit : µm