STAR – Precision Ball Screw Assemblies

STAR – Precision Ball Screw Assemblies
Acceptance Conditions and Tolerance Grades
Run-outs and location deviations
based on DIN 69 051, Part 3 and
ISO 3408-3
Radial run-out t 5 of the outer diameter
of the ball screw shaft over
the length l 5 used to determine the
straightness in relation to AA´
Radial run-out t6 of the bearing
diameter in relation to AA´ for l 6 ≤ l
Where l 6 ≤ l then
Coaxial deviation t 7 ´ of the journal
dia-meter of the ball screw shaft in
relation to the bearing diameter
for l 7 ≤ l
Where l 7 > l then
t ≤ t
6a 6a
t ≤ t
7a 7a
l 6a
l
l 7a
l
l 7
2 d 0
5p
t
t6p AA´
2 d 0
l 6
C
l5 l5 l5
l5 l5
t7p ´ C
l 1
5 max
t
t5p AA´
d 0
A A´
A A
A A´
bearing seat
2 d 0
d 0
d 0
d0 l5
t5p in µm für l5 for
tolerance grade
above up to 1 3 5 7; 9
6 12 80
12 25 160
25 50 315 20 25 32 40
50 100 630
100 200 1250
l1/d0 t5max in µm
for l1 ≥ 4l5 tolerance grade
above up to 1 3 5 7; 9
40 40 50 64 80
40 60 60 75 96 120
60 80 100 125 160 200
80 100 160 200 256 320
Nominal Ref. t6p in µm
diameter length for
l6 ≤ l
d0 l tolerance grade
above up to 1 3 5; 7; 9
6 20 80 10 12 20
20 50 125 12 16 25
50 125 200 16 20 25
125 200 315 - 25 25
Nominal Ref. t7p´ in µm
diameter length for l7 ≤ l
for
d0 l tolerance grade
above up to 1 3 5; 7; 9
6 20 80 5 5 6
20 50 125 5 5 6
50 125 200 6 6 7
125 200 315 - 8 12
82 RE 83 301/12.99