Standard precision ball screws□ Model numbers of each series

Features● GP, GG, GE series: Various screw shaft diameters, leads, andaccuracy grades available for your selection• An optimal size can be selected from a variety of screw shaft diameters, leads, and accuracy
grades eliminating unnecessary compromise in product selection.

● FG, FE series: High rotational speed-1• Delivers higher rotational speed up to 5,000 min through our unique recirculation system.
• In consideration of the load rating, the products have higher specifications than previous
KURODA products.

● DP series: The industry’s smallest compact nut class• Utilizes a deflector recirculation system which realizes minimal nut dimensions.
• With leads from 1 mm, the DP series is suitable for machines and equipment that requires
fine pitch forwarding and precise positioning.

● HG series: Optimal for high-speed conveyance achieved bylarger leads• Larger leads enable a higher feed rate at a low rotational speed.
• With the adoption of multi-start thread, we have achieved a more compact nut with an
improved load rating.

□ Summary of the specifications
Screw shaft diameter
Lead
Accuracy grade
Axial clearance
Shaft end type
Product line

ø6 to ø32 mm
1 to 60 mm
C3 grade: GP, DP
C5 grade: FG, GG, HG
C7 grade: FE, GE
Refer to each product specification table.
One shaft end finished (C3 grade: GP, DP)
Unfinished shaft ends
Standard product

SeriesShaft
diameter

Lead

Number Combinaof circuits tion

Flangetype

Ball recirWiper Thread
culationmaterial direction
systemOverallscrew Shaft end Thread
shaft
type
lengthlengthAccuracy Axial
grade clearance

Example FG
15
10
P
S
−
H
P
N
R
− 0900X
0840 −model
H
DN
DP 6 to 14 1 to 4 J
To be B, X To benumbers FG
shown
shown
10 to 25 5 to 25 P
HPNwith a A, X with aFE
4-digit
4-digitSee
S−
R− number
GG−
specifi- See
8 to 32 2 to 25 See
A, X number
See cations.
specifiGEin metric
in metric
specifispecifications.
units
units
GP
2 to 5
A cations.
B, X
cations.
8 to 20(mm)
HG
12 to 60 Q
Q
A, X (mm)• For more details, refer to the specifications and data for each size.

C5
C3
C5
C7
C5
C7
C3
C5

F
F, S
F
M
F
M
F, S
F, H

40

60

□ Screw shaft diameter and lead combinations
1
○
○

2

3

4

6
8
●○
●
10
●○
●
Screw 12●○○●shaft 14○
diam15●●eter(mm) 1620●
25
32●: GP, GG, GE series○: DP series (small lead)□: HG series (large lead)♦ : FG, FE series (high rotational speed)

5

10

●

●♦
●♦

●♦

●♦

12

Lead (mm)
15
16

20

25

30

32

□
●♦
●

□

●□♦

□

●
●
●♦
●

●♦
●♦
●

□
●□♦
●

□

□

□

●♦

□ Options available
SeriesAdditional shaftend machining

Surfacetreatment

Change ofgrease type

Change of nut
direction

LUBSEAL

GP, DP
See the notes
FG, GG, HG○○○○
below.
FE, GE• The GP and DP series have one shaft end finished.
• The surface treatment is anticorrosive black coating (coating thickness: 1 to 2 μm).
• Contact KURODA regarding the inclusion of grease types other than the standard grease.
• Please refer to the LUBSEAL series and size reference chart or the option specifications on each product’s page
to determine whether or not LUBSEAL is supported.

B-2

B-3

HG series (Accuracy grade C5)

5

ø11.7

9
V E-F

G

L1 (Hardened portion)

A

20
6

45

6

-0

ø6-0.008-0.002

ø8-0.008

5

5
0.
C

0.

2

R0.2
or
less E

9

27

+0.1
0

Applicable supported end support unit
BUK-6S (Square type)
BUM-6S (Round type)
X G

U E-F

C

0.8
6.8

-0

A

4

+0.1
0

4 5

14.7

U A

-0

C0.3

R0.2 or lessF

ø12-0.018

18.2

-0

-0.002

ø6-0.010

A

ø5.7-0.06

U A

0Fixed end 10-0.2

ø11.5-0.018

Supported end

20

0.010 or less---NoneEnd cap method
None
Multemp PS2

0.

C5 / Hø18

A→Thread length→Overall screw shaft length

D2

C
M8×1
10

8

37
V

E-F

Applicable fixed end support unit
BUK-8, BUK-8F (Square type)
BUM-8, BUM-8F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt
Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG0812QS-HEZR-0340A
HG0812QS-HEZR-0340A
289
289340340 261
261 0.023 0.023
0.018 0.018
0.018 0.018

Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.010 0.010
0.012 0.012
0.075 0.075
0.010 0.010
0.005 0.005 ------- 0.20 0.20

• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-16

B-17

Screw shaft
diameter ø8

PC

27.2
-0.006-0

ø8-0.0151

ø3Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG0812QS-HEZR-0340A → HG0812QS-HEZR-0340X0280-C5H

5

Z G

30°

30°

● Shaft end finish type0.

Y

4-3.4 drilled hole

8 - 12
1.67 turns 2 circuits(2 threads) / Right-hand
1.5875
6.6
HG
2490
3460

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø18-0.017

Screw shaft
diameter ø8● Ball screw specifications

Screw shaft diameter ø8, Lead 12

HG series (Accuracy grade C5)

M6×1(Oil hole)6ø5Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG1230QS-BEZR-0800A → HG1230QS-BEZR-0800X0720-C5H

5

+0.1

4

G

G

L1 (Hardened portion)

A

20
15

V

ø11.7

ø9.5

-0

ø12-0.018

10

55

-0

ø8-0.009

5

5

0.

M10×1

10

30
15 10

C

C

R0.2
or less

15
45
V

E-F

Applicable supported end support unit
BUK-8S (Square type)
BUM-8S (Round type)

E

Screw shaft
diameter ø12

0.9

+0.1
0

A

U E-F

-0.002

R0.2 or less
7.9 0

A

U

0.

C0.3

F

ø32

-0.009X0

10-0.2CA

15.5 10 9.5
7-0-0.004

ø8-0.012

32

ø7.6-0.06

U A

Fixed end-03

ø10-0.008

Supported end

D4

2

PC

0.010 or less---NoneEnd cap method
None
Alvania Grease S2

0.

C5 / H

ø12-0.018

48→Thread length→Overall screw shaft length35Aø32-0.025-0ø12-0.018

Z G

30°

30°

● Shaft end finish type5Y

4-5.5 drilled hole,
9.5 spot facing,
depth 5.4

12 - 30
0.67 turns 3 circuits(3 threads) / Right-hand
3.175
9.5
HG
4800
6650

0.

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
LubricantC

Screw shaft
diameter ø12● Ball screw specifications

Screw shaft diameter ø12, Lead 30

E-F

Applicable fixed end support unit
BUK-10, BUK-10F (Square type)
BUM-10, BUM-10F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt
Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG1230QS-BEZR-0500A
HG1230QS-BEZR-0500A
430
430500500 395
395 0.027 0.027
0.020 0.020
0.018 0.018
HG1230QS-BEZR-0800A
HG1230QS-BEZR-0800A
730
730800800 695
695 0.035 0.035
0.025 0.025

Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.080 0.080
0.62 0.62
0.010 0.010
0.012 0.012
0.011 0.011
0.005 0.005 ------0.090 0.090
0.85 0.85
X• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-52

B-53

HG series (Accuracy grade C5)→Thread length→Overall screw shaft length

D4

G

X G
L1 (Hardened portion)

12

-0

5

5

0.

R0.3
or less
E 10
30
15

10 10

45

M12×1

0

ø15-0.018

Aø10-0.009-0.003

ø12-0.011

5

2

+0.1

5

U E-F

2
C
+0.14

1.15 09.15 0

A

25
10

V E-F

ø14.5

ø12.5

22.2

10 8

ø34

-0.009

ø34-0.025

29.3

C0.5

R0.3 or less

F

U A

0

12-0.25-0A

Fixed end
ø15-0.018-0.004

ø10-0.012

34

47.3

A

Supported end

U A-00.005 or less
Up to 6.0
None
End cap method
None
Alvania Grease S2

0.

C5 / F

5

C

PC

0.

5

ø5

Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG1520QS-HEZR-1100A → HG1520QS-HEZR-1100X1023-C5FC

14°● Shaft end finish type55

Applicable supported end support unit
BUK-10S (Square type)
BUM-10S (Round type)V

E-F

Applicable fixed end support unit
BUK-12, BUK-12F (Square type)
BUM-12, BUM-12F (Round type)
Screw shaft
diameter ø15

Screw shaft
diameter ø15-0

ø15-0.018

G

M6×1(Oil hole)

4-5.5
drilled
hole

5

Z

30°

30°

0.

Y

15 - 20
1.67 turns 2 circuits(2 threads) / Right-hand
3.175
12.5
HG
8740
17550

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø9.6-0.09● Ball screw specifications

Screw shaft diameter ø15, Lead 20● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG1520QS-HEZR-0600A
HG1520QS-HEZR-0600A
535
535600600 487487 0.030 0.030
0.023 0.023
0.018 0.018
HG1520QS-HEZR-1100A
HG1520QS-HEZR-1100A
1035 1035
1100 1100 987
987 0.046 0.046
0.030 0.030

Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.075 0.075
1.07 1.07
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005
Up to 6.0
Up to 6.0
0.150 0.150
1.70 1.70
X• Product with axial clearance of 0.005 or less (F) shown may be partially preloaded.
• Preload torque is a value before applying grease.
• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-82

B-83

HG series (Accuracy grade C5)

8

ø5

41.7
4

X

A

G

G

L1 (Hardened portion)

V

ø14.5

A

25
15

9.15

+0.1
0

55

-0

ø10-0.009

5

5

0.

0.

R0.3
or less
E 10
30
15

15 10

45

E-F

Applicable supported end support unit
BUK-10S (Square type)
BUM-10S (Round type)

C

5

2

A

U E-F

C

-0

1.15

+0.14
0

12

-0

ø34

11.7

12 9.5

ø15-0.018-0.009

ø34-0.025

20.2

R0.3 or less

F

ø12.5

A

C0.5

C

A

U

0

12-0.25-0.003-0.00434

Fixed end

ø12-0.011

Supported end

U A

2

5

0.

D4

ø15-0.018

PC

0.010 or less---NoneEnd cap method
None
Alvania Grease S2-0

C5 / H

ø9.6-0.09

50→Thread length→Overall screw shaft length

V

M12×1

E-F

Applicable fixed end support unit
BUK-12, BUK-12F (Square type)
BUM-12, BUM-12F (Round type)
Screw shaft
diameter ø15

Screw shaft
diameter ø15-0

ø15-0.018

G

M6×1(Oil hole)Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG1540QS-BEZR-1100A → HG1540QS-BEZR-1100X1018-C5H

5

Z

30°

30°

● Shaft end finish type0.

Y

4-5.5 drilled hole,
9.5 spot facing,
depth 5.4

15 - 40
0.67 turns 3 circuits(3 threads) / Right-hand
3.175
12.5
HG
5600
8600

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø10-0.012● Ball screw specifications

Screw shaft diameter ø15, Lead 40● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG1540QS-BEZR-0600A
HG1540QS-BEZR-0600A
530
530600600 488
488 0.030 0.030
0.023 0.023
0.018 0.018
HG1540QS-BEZR-1100A
HG1540QS-BEZR-1100A
1030 1030
1100 1100 988
988 0.046 0.046
0.030 0.030

Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.075 0.075
1.06 1.06
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005 ------0.150 0.150
1.70 1.70
X• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-84

B-85

HG series (Accuracy grade C5)

9.5

+0.14
0

1.15

L1 (Hardened portion)

ø15.5

ø13.5

ø35

G

G

12

A

25
15

-0

ø10-0.009

5

5

0.

45
V

E-F

Applicable supported end support unit
BUK-10S (Square type)
BUM-10S (Round type)

C

15 10

2

+0.1

V

C

5

R0.3
or less
E 1030
15

9.15 0A

0.

0.

R0.2 or less

A

U E-F

-0.003

-0

-0

C0.5

C

A

U

0

12-0.252

ø9.6-0.09-0.004

ø10-0.012

38

Fixed end
ø15-0.018

Supported end

U Aø12-0.011

44

F

8.3

X

→Thread length→Overall screw shaft length-0-0.009

ø35-0.025-0ø16-0.018

G

0.005 or less
Up to 6.0
None
End cap method
None
Alvania Grease S2Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG1632QS-HEZR-1100A → HG1632QS-HEZR-1100X1023-C5F

5

Z

PCD

C5 / F

36.3
16.8 10
5

A

6

ø5

● Shaft end finish type0.

Y

4-4.5 drilled hole
30°
30°
14°
M6×1
(Oil hole)

16 - 32
0.67 turns 3 circuits(3 threads) / Right-hand
3.175
13.5
HG
6100
9100

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø16-0.018● Ball screw specifications

Screw shaft diameter ø16, Lead 32

M12×1

E-F

Applicable fixed end support unit
BUK-12, BUK-12F (Square type)
BUM-12, BUM-12F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

55

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
ec e300
e300
L1
L1 Lt
Lt
±Ec
±Ec ec
HG1632QS-HEZR-0600A
HG1632QS-HEZR-0600A
530
530600600 493493 0.030 0.030
0.023 0.023
0.018 0.018
HG1632QS-HEZR-1100A
HG1632QS-HEZR-1100A
1030 1030
1100 1100 993
993 0.046 0.046
0.030 0.030

Screw shaft
diameter ø16

Screw shaft
diameter ø16

Lt
Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.075 0.075
1.14 1.14
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005
Up to 6.0
Up to 6.0
0.150 0.150
1.86 1.86
X• Product with axial clearance of 0.005 or less (F) shown may be partially preloaded.
• Preload torque is a value before applying grease.
• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-88

B-89

HG series (Accuracy grade C5)→Thread length→Overall screw shaft length

L1 (Hardened portion)

ø19.5

A

25
5

75

3

5

+0.1
0

Applicable supported end support unit
BUK-15S (Square type)
BUM-15S (Round type)

-0

0.

M15×1
20

60
V

V E-F

5

5

R0.3
or less
E 15
40

5 15

ø12-0.011

U E-F

C

C

1.15

+0.14
0

12

-0

ø17.5
G

G

ø20-0.021

A

U A

-0

C0.5

10.15

5
ø39

-0.009X0

17-0.25

R0.3 or lessF

29.3 10 822.2-0-0.004

ø15-0.012

AA

ø14.3-0.11

U

Fixed end
ø20-0.021

Supported end

39

0.005 or less
Up to 7.0
None
End cap method
None
Alvania Grease S2

0.

C5 / FC

50-0.003PCD

ø15-0.011

ø62Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG2020QS-HEZR-1500A → HG2020QS-HEZR-1500X1408-C5F

47.3

Aø39-0.025-0ø20-0.021

4-5.5
drilled hole

5G

● Shaft end finish type

30°

0.

Z

M6×1
(Oil hole)

30°
14°

C

Y

20 - 20
1.67 turns 2 circuits(2 threads) / Right-hand
3.175
17.5
HG
10690
23330

3

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricant0.

● Ball screw specifications

Screw shaft diameter ø20, Lead 20

E-F

Applicable fixed end support unit
BUK-15, BUK-15F (Square type)
BUM-15, BUM-15F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt
Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.120 0.120
2.71 2.71
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005
Up to 7.0
Up to 7.0
0.190 0.190
3.86 3.86
X• Product with axial clearance of 0.005 or less (F) shown may be partially preloaded.
• Preload torque is a value before applying grease.
• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-106

Screw shaft
diameter ø20

Screw shaft
diameter ø20

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG2020QS-HEZR-1000A
HG2020QS-HEZR-1000A
920
920
1000 1000 872
872 0.040 0.040
0.027 0.027
0.018 0.018
HG2020QS-HEZR-1500A
HG2020QS-HEZR-1500A
1420 1420
1500 1500 1372 1372 0.054 0.054
0.035 0.035

B-107

HG series (Accuracy grade C5)→Thread length→Overall screw shaft length

10 8

X

G

G

L1 (Hardened portion)

ø20-0.021

ø19.5

A

25
5

75

3

5

+0.1
0

-0

ø12-0.011

0.

M15×1
20

60
V

V E-F

Applicable supported end support unit
BUK-15S (Square type)
BUM-15S (Round type)

0.

R0.3
or less
15
E
40

5 15

5

5

3
0.
C

1.15

+0.14
0

12

-0

A

U E-F

C

-0

-0

C0.5

10.15

5
ø17.5

38.9

U A

0

17-0.25

R0.3 or lessF

ø39

-0.00946

A-0.004U

Fixed end
ø20-0.021

Supported end

39Aø14.3-0.11

0.005 or less
Up to 9.0
None
End cap method
None
Alvania Grease S2

C

C5 / F-0.00350

ø15-0.011

PCD

64

A
ø39-0.025-0ø20-0.021

G

ø62

Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG2030QS-HEZR-1500A → HG2030QS-HEZR-1500X1408-C5F

5

Z

30°

30° M6×1(Oil hole)● Shaft end finish type0.

Y

4-5.5 drilled hole

20 - 30
1.67 turns 2 circuits(2 threads) / Right-hand
3.175
17.5
HG
10690
23330

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø15-0.012● Ball screw specifications

Screw shaft diameter ø20, Lead 30

E-F

Applicable fixed end support unit
BUK-15, BUK-15F (Square type)
BUM-15, BUM-15F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt

Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.120 0.120
2.87 2.87
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005
Up to 9.0
Up to 9.0
0.190 0.190
4.06 4.06
X• Product with axial clearance of 0.005 or less (F) shown may be partially preloaded.
• Preload torque is a value before applying grease.
• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-108

Screw shaft
diameter ø20

Screw shaft
diameter ø20

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG2030QS-HEZR-1000A
HG2030QS-HEZR-1000A
920
920
1000 1000 856
856 0.040 0.040
0.027 0.027
0.018 0.018
HG2030QS-HEZR-1500A
HG2030QS-HEZR-1500A
1420 1420
1500 1500 1356 1356 0.054 0.054
0.035 0.035

B-109

HG series (Accuracy grade C5)G

X G
L1 (Hardened portion)

ø19.5

-0

A

25
15

V

-0

R0.3
or less
E 15
40

15 15

Applicable supported end support unit
BUK-15S (Square type)
BUM-15S (Round type)

5

M15×1
20

60
V

E-F

0.

3

5

+0.1
0

12

ø20-0.021

Aø17.5-0.009

13.7

3

A

U E-F

0.
C
+0.14

1.15 0
10.15

5
ø40

-0

ø20-0.021

Z G

R0.3 or lessF

23.7 10 11Aø40-0.025

Y

C0.5

5

44.7

U

0

17-0.25-0-0.004A0.

ø15-0.012

44

A

-0

U

Fixed end
ø20-0.021

Supported end

0.005 or less
Up to 7.0
None
End cap method
None
Alvania Grease S2

ø12-0.011

50

5C5 / F→Thread length→Overall screw shaft length-0.003

PCD

C

ø62

Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG2040QS-HEZR-1500A → HG2040QS-HEZR-1500X1398-C5F

0.

(Oil hole)● Shaft end finish typeC4-5.5 drilled hole
30°
30°
14°
M6×1

ø15-0.011

20 - 40
0.67 turns 3 circuits(3 threads) / Right-hand
3.175
17.5
HG
6800
12100

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricantø14.3-0.11● Ball screw specifications

Screw shaft diameter ø20, Lead 40

E-F

Applicable fixed end support unit
BUK-15, BUK-15F (Square type)
BUM-15, BUM-15F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

75

Lt
Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.120 0.120
2.73 2.73
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005
Up to 7.0
Up to 7.0
0.190 0.190
3.90 3.90
X• Product with axial clearance of 0.005 or less (F) shown may be partially preloaded.
• Preload torque is a value before applying grease.
• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-110

Screw shaft
diameter ø20

Screw shaft
diameter ø20

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
ec e300
e300
L1
L1 Lt
Lt
±Ec
±Ec ec
HG2040QS-HEZR-1000A
HG2040QS-HEZR-1000A
910
910
1000 1000 865
865 0.040 0.040
0.027 0.027
0.018 0.018
HG2040QS-HEZR-1500A
HG2040QS-HEZR-1500A
1410 1410
1500 1500 1365 1365 0.054 0.054
0.035 0.035

B-111

HG series (Accuracy grade C5)
4-5.5 drilled hole,
9.5 spot facing,
depth 5.4
M6×1
(Oil hole)

2

ø6

12 11

+0.14

1.15 0G

X G
L1 (Hardened portion)

ø19.5

A

25
20

75

5

20

15

-0

5

5

0.

0.
C

R0.3
or less
E 15
40

M15×1
20

60
V E-F

V E-F

Applicable supported end support unit
BUK-15S (Square type)
BUM-15S (Round type)ø12-0.011-0.003

3

+0.1
0

12

0

A

ø20-0.021

10.15

4
ø17.5

25

R0.3 or lessF

ø40

-0.009ø40-0.025-0ø20-0.021

Z G

3

5

58
35

C0.5

U E-F

0.

A

U A

C

-0.004

ø15-0.012

40

A

-0

U

Fixed end 17 0
-0.25

C

Supported end

ø15-0.011

50

0.

0.010 or less---NoneEnd cap method
None
Alvania Grease S2→Thread length→Overall screw shaft lengthø20-0.021

PCD

C5 / H

Standard precision ball screws are available with KURODA’s recommended shaft end finish
types for each size.
Other than KURODA’s recommended shaft end finish types described below, additional machining
including keyways, tapped holes, and D-cut processing are also available if requested. Pleasecontact KURODA with your orders. Model examples for finished shaft ends are described below.
Model example: Unfinished shaft ends (See left figure) → Finished shaft ends
HG2060QS-BEZR-1500A → HG2060QS-BEZR-1500X1393-C5H

-0

30°

30°

● Shaft end finish type

ø14.3-0.11

20 - 60
0.67 turns 3 circuits(3 threads) / Right-hand
3.175
17.5
HG
6800
12100

C

Shaft diameter (mm) - Lead (mm)Number of circuits /Thread direction
Ball diameter (mm)Root diameter (mm)SeriesBasic dynamic load rating C (N)Basic static load rating C0 (N)Accuracy grade /Axial clearance symbol
Axial clearance (mm)Preload torque (N·cm)
Spacer ballRecirculation system
Wiper
Lubricant56● Ball screw specifications

Screw shaft diameter ø20, Lead 60

Applicable fixed end support unit
BUK-15, BUK-15F (Square type)
BUM-15, BUM-15F (Round type)● Optional specifications• Anticorrosive black coating (coating thickness: 1 to 2 μm) is available.

Lt
Accuracy
Accuracyof each ofparteach part
PreloadPreload
torque torque
Mass Mass
(kg)
X Y
Y Z
Z U
U V
V (N·cm) (N·cm) (kg)0.120 0.120
2.87 2.87
0.011 0.011
0.015 0.015
0.012 0.012
0.005 0.005 ------0.190 0.190
4.06 4.06
X• At the time of delivery, grease is inserted inside of the nut, with rust-preventive oil also applied.
Before and during use, apply lubricant where appropriate.

B-112

Screw shaft
diameter ø20

Screw shaft
diameter ø20

Screw
lengthshaft length
Lead accuracy
Model No.
Model No. Screw shaft
MaximumMaximum
stroke stroke Lead accuracy(Unfinished(Unfinishedshaft ends)
shaft ends)(L1 - nut length)(L1 - nut length)
L1
L1 Lt
Lt
±Ec
±Ec ecec e300
e300
HG2060QS-BEZR-1000A
HG2060QS-BEZR-1000A
905
905
1000 1000 847
847 0.040 0.040
0.027 0.027
0.018 0.018
HG2060QS-BEZR-1500A
HG2060QS-BEZR-1500A
1405 1405
1500 1500 1347 1347 0.054 0.054
0.035 0.035

B-113