KWG Module 0.5, 0.

8 Ground Worm Shafts

Ground Worm Shafts
Specifications
Precision
grade KHK W 001 grade 2
Reference
section of gear Axial direction J
K M O
Gear teeth Standard full depth
Gears

Gears
G G
Spur

Spur
G G
Normal
pressure angle 20°

Q
S

S
Material SCM440
Heat Thermal refined, gear teeth
treatment induction hardened
Tooth
Helical

Helical
50 to 60HRC
Gears

Gears
hardness W5

Axial Number of Nominal Direction of Total Length Shaft length (L) Neck length (left) Face width Neck length (right) Shaft length (R) Pitch dia. Outside dia. Neck dia. Shaft dia. Weight
Catalog Number module Starts lead angle helix
Shape Catalog Number
J K L M N O P Q R Sh7 (kg)
Internal

Internal
KWG0.5-R1 1 3°11’ KWG0.5-R1
Gears

Gears
m0.5 R W5 65 19 — 12 — 34 9 10 — 6 0.018
KWG0.5-R2 2 6°20’ KWG0.5-R2
KWG0.8-R1 1 3°49’ KWG0.8-R1
m0.8 R W5 85 25 — 20 — 40 12 13.6 — 8 0.043
KWG0.8-R2 2 7°36’ KWG0.8-R2
Racks

Racks
CP Racks &

CP Racks &
Pinions

Pinions
AG Module 0.5, 0.8 Worm Wheels
Worm Wheels
Gears

Gears
Miter

Miter
Specifications
G
Precision
grade KHK W 002 grade 2 E F
Reference
section of gear Rotating plane
Gear teeth Standard full depth
J
Gears

Gears
Bevel

Bevel
Normal
pressure angle 20°

D'
C
B
Material CAC702 (old JIS Aℓ BC2) A

Heat
Treatment —
Tooth
—
Screw

Screw
Gears

Gears
hardness HA
NOTE 1: Allowable torque based on worm speed (rpm)

Reduction Transverse No. of No. of starts of Direction of Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash Weight
Catalog Number ratio module teeth mating worm
Lead angle
helix
Shape Catalog Number
AH7 B C D D’ E F G (H) (I) J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm (mm) (kg)
AG0.5-20R1 20 20 1 3°11’ 4 9 10 11 9.5 0.52 0.44 0.36 0.30 0.26 0.24 0.21 0.0056 AG0.5-20R1
Worm
Gears

Worm
Gears
AG0.5-20R2 10 20 2 6°20’ 4 9 10 11 9.5 0.51 0.42 0.33 0.27 0.24 0.22 0.19 0.0056 AG0.5-20R2
AG0.5-30R1 30 30 1 3°11’ 4 12 15 16 12 1.09 0.94 0.77 0.65 0.58 0.53 0.48 0.012 AG0.5-30R1
AG0.5-30R2 15 m0.5 30 2 6°20’ R HA 4 12 15 — 16 5 7 12 — — 12 1.09 0.92 0.73 0.60 0.54 0.49 0.43 0.02~0.12 0.012 AG0.5-30R2
AG0.5-40R1 40 40 1 3°11’ 5 15 20 21 14.5 1.86 1.60 1.34 1.15 1.02 0.94 0.84 0.020 AG0.5-40R1
Gearboxes

Gearboxes
AG0.5-50R1 50 50 1 3°11’ 5 20 25 26 17 2.82 2.42 2.05 1.77 1.58 1.46 1.30 0.035 AG0.5-50R1
AG0.5-60R1 60 60 1 3°11’ 5 25 30 31 19.5 3.94 3.41 2.89 2.50 2.26 2.08 1.87 0.053 AG0.5-60R1
AG0.8-20R1 20 20 1 3°49’ 5 12 16 17.6 14 1.78 1.50 1.21 1.00 0.88 0.82 0.71 0.018 AG0.8-20R1
AG0.8-20R2 10 20 2 7°36’ 5 12 16 17.6 14 1.76 1.44 1.11 0.91 0.80 0.74 0.63 0.018 AG0.8-20R2
AG0.8-30R1 30 30 1 3°49’ 5 18 24 25.6 18 3.77 3.21 2.62 2.20 1.96 1.81 1.61 0.043 AG0.8-30R1
Products

Products
AG0.8-30R2 15 m0.8 30 2 7°36’ R HA 5 18 24 — 25.6 8 8 16 — — 18 3.75 3.14 2.46 2.02 1.80 1.65 1.45 0.02~0.12 0.043 AG0.8-30R2
Other

Other
AG0.8-40R1 40 40 1 3°49’ 6 20 32 33.6 22 6.45 5.49 4.55 3.87 3.46 3.19 2.83 0.068 AG0.8-40R1
AG0.8-50R1 50 50 1 3°49’ 8 25 40 41.6 26 9.75 8.31 6.94 5.94 5.34 4.96 4.38 0.10 AG0.8-50R1
AG0.8-60R1 60 60 1 3°49’ 8 25 48 49.6 30 13.6 11.7 9.77 8.39 7.63 7.05 6.27 0.14 AG0.8-60R1

Product Precautions Page 398

410 You can download CAD data (DXF format) of KHK Products from the Website. 411
 KWG Module 1, 1.5 Ground Worm Shafts
Ground Worm Shafts
Specifications
Precision
grade KHK W 001 grade 2
Reference J
section of gear Axial direction
K L M N O
Standard full depth
Gears

Gears
Gear teeth G G
G
Spur

Spur
G
Normal
pressure angle 20°

Q
R

P
S

S
Material SCM440
Heat Thermal refined, gear teeth
treatment induction hardened
Tooth
50 to 60HRC
Helical

Helical
Gears

Gears
hardness
Surface Black oxide coated except for
W6
treatment ground part

Axial Number of Nominal Direction of Total Length Shaft length (L) Neck length (left) Face width Neck length (right) Shaft length (R) Pitch dia. Outside dia. Neck dia. Shaft dia. Weight
Catalog Number module Starts lead angle helix
Shape Catalog Number
J K L M N O P Q R S (kg)
Internal

Internal
KWG1-R1 1 3°35’ KWG1-R1
Gears

Gears
m1 R W6 140 35 10 30 10 55 16 18 13 18.2 0.25
KWG1-R2 2 7°08’ KWG1-R2
KWG1.5-R1 1 3°26’ KWG1.5-R1
m1.5 R W6 190 50 15 40 15 70 25 28 21 26.2 0.74
KWG1.5-R2 2 6°51’ KWG1.5-R2
Racks

Racks
CP Racks &

CP Racks &
Pinions

Pinions
AG Module 1, 1.5 Worm Wheels
Worm Wheels J J Series
Gears

Gears
Miter

Miter
G G G
Specifications E F E F E F
Precision L
L=F/2 L
L=F/2
grade KHK W 002 grade 2
Reference
Rotating plane
Gears

Gears
Bevel

Bevel
section of gear
J

J
Gear teeth Standard full depth
Normal
AH7 Bore
pressure angle 20° B Hub dia.

D'

D'

D'
C

C
D

D
B

B
A

A
Material CAC702 (old JIS Aℓ BC2) C Pitch dia.
Screw

Screw
Gears

Gears
Heat D Throat dia.
Treatment —
D’ Outside dia.
Tooth H1 H1T H1K
hardness — E Face width
* The precision grade of J Series products is F Hub width
equivalent to the value shown in the table.
G Total length To order J Series products, please specify: Catalog No. + J + BORE.
J Mounting distance
Worm
Gears

Worm
Gears
Bore H7 * The product shapes of J Series items are identified by background color.
NOTE 1: Allowable torque based on worm speed (rpm) Keyway Js9 6 8 10 12 14 15 16 17 18 19 20 22 25 28 30
Reduction No. of No. of starts Lead angle Allowable torque (N·m) NOTE 1 Backlash Weight Screw size — 4×1.8 5×2.3 6×2.8 8×3.3
Catalog Number of mating
ratio teeth worm helix direction
Shape AH7 B C D D’ E F G J
30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm 1800 rpm (mm) (kg) Catalog Number M4 M5 M4 M5 M6
AG1-20R1 J BORE
Gearboxes

Gearboxes
AG1-20R1 20 20 1 3°35’ 6 16 20 22 23 18 3.35 2.79 2.23 1.83 1.63 1.50 1.30 0.038 H1T
AG1-20R2 10 20 2 7°08’ 6 16 20 22 23 18 3.31 2.69 2.06 1.68 1.48 1.35 1.15 0.038 AG1-20R2 J BORE H1T
AG1-30R1 30 30 1 3°35’ 6 20 30 32 33 23 7.08 5.98 4.84 4.05 3.63 3.31 2.92 0.078 AG1-30R1 J BORE H1T H1T
AG1-30R2 15 30 2 7°08’ R H1 6 20 30 32 33 10 10 20 23 7.03 5.84 4.56 3.72 3.33 3.03 2.63 0.04~0.14 0.078 AG1-30R2 J BORE H1T H1T
AG1-40R1 40 40 1 3°35’ 8 26 40 42 43 28 12.1 10.2 8.43 7.12 6.38 5.86 5.13 0.13 AG1-40R1 J BORE H1T H1K H1K
Products

Products
AG1-50R1 50 50 1 3°35’ 8 30 50 52 53 33 18.3 15.5 12.9 10.9 9.87 9.09 7.95 0.20 AG1-50R1 J BORE H1T H1K H1K H1K H1K H1K H1K
Other

Other
AG1-60R1 60 60 1 3°35’ 10 35 60 62 63 38 25.6 21.8 18.1 15.4 14.1 12.9 11.4 0.29 AG1-60R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K
AG1.5-20R1 20 20 1 3°26’ 8 22 30 33 34.5 27.5 9.84 8.18 6.40 5.30 4.68 4.25 3.68 0.10 AG1.5-20R1 J BORE H1T H1K
AG1.5-20R2 10 20 2 6°51’ 8 22 30 33 34.5 27.5 9.72 7.87 5.92 4.87 4.25 3.83 3.27 0.10 AG1.5-20R2 J BORE H1T H1K
AG1.5-30R1 30 30 1 3°26’ 10 30 45 48 49.5 35 20.8 17.5 13.9 11.7 10.4 9.40 8.28 0.22 AG1.5-30R1 J BORE H1K H1K H1K H1K H1K H1K
AG1.5-30R2 15 30 2 6°51’ R H1 10 30 45 48 49.5 14 10 24 35 20.7 17.1 13.1 10.8 9.56 8.58 7.46 0.04~0.14 0.22 AG1.5-30R2 J BORE H1K H1K H1K H1K H1K H1K
AG1.5-40R1 40 40 1 3°26’ 12 35 60 63 64.5 42.5 35.6 30.0 24.2 20.6 18.3 16.6 14.6 0.37 AG1.5-40R1 J BORE H1K H1K H1K H1K H1K H1K H1K
AG1.5-50R1 50 50 1 3°26’ 12 45 75 78 79.5 50 53.8 45.4 36.9 31.6 28.3 25.8 22.6 0.59 AG1.5-50R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K
AG1.5-60R1 60 60 1 3°26’ 12 50 90 93 94.5 57.5 75.3 63.8 51.9 44.7 40.4 36.7 32.4 0.83 AG1.5-60R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K

Product Precautions Page 398 Precautions for Standard Machined Products Pages 38~40
412 413