Precision Ball Screw Axial Play

Table 3 shows the axial clearance of the precision Screw Ball. If the manufacturing length exceeds the value in Table 4, the resultant clearance may partially be negative (preload applies).

The manufacturing limit lengths of the Ball Screws compliant with the DIN standard are provided in Table 5.

For the axial clearance of the Precision Caged Ball Screw, see

Table 3 Axial Clearance of the Precision Ball Screw.

Clearance symbol	G0	GT	G1	G2	G3
Axial Clearance	0 or less	0~0.005	0~0.01	0~0.02	0~0.05

Unit : mm

Table 4 Maximum Length of the Precision Ball Screw in Axial Clearance.

Screw shaft outer diameter	Maximum Thread Length
	Clearance GT		Clearance G1		Clearance G2
	C0~C3	C5	C0~C3	C5	C0~C3	C5	C7
4~6	80	100	80	100	80	100	120
8~10	250	200	250	250	250	300	300
12~16	500	400	500	500	700	600	500
18~25	800	700	800	700	1000	1000	1000
28~32	900	800	1100	900	1400	1200	1200
36~45	1000	800	1300	1000	2000	1500	1500
50~70	1200	1000	1600	1300	2500	2000	2000
80~100	-	-	1800	1500	4000	3000	3000

Unit : mm

∗ When manufacturing the Ball Screw of precision-grace accuracy C7 with clearance GT or G1, the resultant clearance is partially negative.

Axial Clearance of the Rolled Ball Screw

Table 5 Axial Clearance of the Rolled Ball Screw.

Screw shaft outer diameter	Axial clearance (maximum)
6~12	0.05
14~28	0.10
30~32	0.14
36~45	0.17
50	0.20

Unit : mm