Worm W

Caution
- The product images are representative only. Specifications may vary by part number, including shape and color.
- Delivery dates are unstable due to difficulties in obtaining materials and components. There is no estimated date for the next restock of items that are currently unavailable for order.
- The worm and worm wheel should be used in the same module, in the same direction of twist, and with the same number of teeth.
Product Description
Worm gear with curved tooth tip corners and mirror-finished tooth surface by precision rolling finish to prevent damage to the worm wheel teeth.
[Features]
· Gears with module 0.5 to 3 have precision rolling finish, SUS304 and S45C with excellent corrosion resistance.
· Modules are 0.5/0.8/1/1.5/2/2.5/3
· The surface of the threaded side has improved hardness by work-hardening, and the fiber structure of the metal is not cut off, resulting in excellent mechanical properties.
Normal module. To be used in combination with a worm.
[Applications]
· Ideal for power transmission, drive, and conveyance parts of equipment.
· Used when deceleration is required
Notice
The worm wheel is sold separately. (Here)
Drawing
Worm Gear SUS304
SUS304 module 0.5

Shape B
SUS304 module 0.8

Shape B

L type
SUS304 module 1

Shape B
Worm Gear S45C
S45C module 0.8

Shape B

L type
S45C module 1

L type

Shape A

Shape B
S45C module 1.25

Shape B
S45C module 1.5

Shape B

C type
S45C module 2

Shape B

C type
S45C module 2.5

Shape B

C type
S45C module 3

Shape B

C type
S45C module 4

Shape B
S45C module 5

Shape B
Specifications Table
Worm Gear SUS304 Dimensions
SUS304 module 0.5 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length lh | full length l | Advance Angle γ | Weight W (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W50SUR1+B | R | 1 | ⌀9 | ⌀10 | B | 13 | ⌀3 | ⌀7.6 | 5 | 18 | 3° 11′ | 7.3 |
[+] has a set screw. (Material is not stainless steel.)
SUS304 module 0.8 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | ||||||||||||
| W80SR1+B | R | 1 | ⌀10.4 | ⌀12 | B | 14 | ⌀5 | ⌀10.3 | - | 6 | 26 | 4° 24′ | 18 |
| W80SR1-L | R | 1 | ⌀10.4 | ⌀12 | L | 20 | - | ⌀8 (h9) | 20 | 40 | 80 | 4° 24′ | 40 |
- * SUS304 products do not come with a set screw.
SUS304 module 1 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length lh | full length l | Advance Angle γ | Weight W (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W1SUR1+B | R | 1 | ⌀16 | ⌀18 | B | 15.5 | ⌀6 | ⌀15.85 | 7 | 32 | 3° 35′ | 42 |
| W1SUR2+B | R | 2 | ⌀16 | ⌀18 | B | 15 | ⌀6 | ⌀15.85 | 7 | 32 | 7° 11ʼ | 42 |
- * SUS304 products do not come with a set screw.
SUS304 module 1.5 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length lh | full length l | Advance Angle γ | Weight W (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W1.5SUR1-B | R | 1 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | 13 | 43 | 3° 26ʼ | 120 |
| W1.5SUR2-B | R | 2 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | 13 | 43 | 6° 54ʼ | 120 |
Worm Gear S45C Dimensions
S45C module 0.8 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | ||||||||||||
| W80SR1+B | R | 1 | ⌀10.4 | ⌀12 | B | 14 | ⌀5 | ⌀10.3 | - | 6 | 26 | 4° 24′ | 18 |
| W80SR1-L | R | 1 | ⌀10.4 | ⌀12 | L | 20 | - | ⌀8 (h9) | 20 | 40 | 80 | 4° 24′ | 40 |
[+] has a set screw.
S45C module 1 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Key groove b2 × t2 | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | |||||||||||||
| W1SR1 = A | R | 1 | ⌀16 | ⌀18 | A | 25 | ⌀8 | - | - | - | 25 | 3 x 1.4 | 3° 35′ | 28.0 |
| W1SR1+B | R | 1 | ⌀16 | ⌀18 | B | 17 | ⌀6 | ⌀15.85 | - | 7 | 32 | - | 3° 35′ | 42.0 |
| W1SR1+B-8 | R | 1 | ⌀16 | ⌀18 | B | 17 | ⌀8 | ⌀15.85 | - | 7 | 32 | - | 3° 35′ | 42.0 |
| W1SR1-L | R | 1 | ⌀16 | ⌀18 | L | 25 | - | ⌀13 (h8) | 25 | 50 | 100 | - | 3° 35′ | 120.0 |
| W1SR2=A | R | 2 | ⌀16 | ⌀18 | A | 25 | ⌀8 | - | - | - | 25 | 3 x 1.4 | 7° 11ʼ | 28.0 |
| W1SR2+B | R | 2 | ⌀16 | ⌀18 | B | 16.5 | ⌀6 | ⌀15.85 | - | 7 | 32 | - | 7° 11ʼ | 42.0 |
| W1SR2+B-8 | R | 2 | ⌀16 | ⌀18 | B | 16.5 | ⌀8 | ⌀15.85 | - | 7 | 32 | - | 7° 11ʼ | 42.0 |
| W1SR2-L | R | 2 | ⌀16 | ⌀18 | L | 25 | - | ⌀13 (h8) | 25 | 50 | 100 | - | 7° 11ʼ | 120.0 |
| W1SL1=A | L | 1 | ⌀16 | ⌀18 | A | 25 | ⌀8 | - | - | - | 25 | 3 x 1.4 | 3° 35′ | 28.0 |
| W1SL1+B | L | 1 | ⌀16 | ⌀18 | B | 17 | ⌀6 | ⌀15.85 | - | 7 | 32 | - | 3° 35′ | 42.0 |
| W1SL1-L | L | 1 | ⌀16 | ⌀18 | L | 25 | - | ⌀13 (h8) | 25 | 50 | 100 | - | 3° 35′ | 120.0 |
| W1SL2=A | L | 2 | ⌀16 | ⌀18 | A | 25 | ⌀8 | - | - | - | 25 | 3 x 1.4 | 7° 11ʼ | 28.0 |
| W1SL2+B | L | 2 | ⌀16 | ⌀18 | B | 16.5 | ⌀6 | ⌀15.85 | - | 7 | 32 | - | 7° 11ʼ | 42.0 |
| W1SL2-L | L | 2 | ⌀16 | ⌀18 | L | 25 | - | ⌀13 (h8) | 25 | 50 | 100 | - | 7° 11ʼ | 120.0 |
[=] has a key material.
[+] has a set screw.
S45C module 1.25 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length lh | full length l | Advance Angle γ | Weight W (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W1.25SR1-B | R | 1 | ⌀20 | ⌀22.5 | B | 25 | ⌀8 | ⌀16.8 | 12 | 37 | 3° 35′ | 65.2 |
S45C module 1.5 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Key groove b2 × t2 | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | |||||||||||||
| W1.5SR1-B | R | 1 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | - | 13 | 43 | - | 3° 26ʼ | 0.12 |
| W1.5SR1-CF | R | 1 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | - | 3° 26ʼ | 0.14 |
| W1.5SR1=C | R | 1 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | 4 x 1.8 | 3° 26ʼ | 0.13 |
| W1.5SR2-B | R | 2 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | - | 13 | 43 | - | 6° 54ʼ | 0.12 |
| W1.5SR2-CF | R | 2 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | - | 6° 54ʼ | 0.14 |
| W1.5SR2=C | R | 2 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | 4 x 1.8 | 6° 54ʼ | 0.13 |
| W1.5SL1-B | L | 1 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | - | 13 | 43 | - | 3° 26ʼ | 0.12 |
| W1.5SL1=C | L | 1 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | 4 x 1.8 | 3° 26ʼ | 0.13 |
| W1.5SL2-B | L | 2 | ⌀25 | ⌀28 | B | 30 | ⌀10 | ⌀20 | - | 13 | 43 | - | 6° 54ʼ | 0.12 |
| W1.5SL2=C | L | 2 | ⌀25 | ⌀28 | C | 35 | ⌀12 | ⌀20 | 10 | 10 | 55 | 4 x 1.8 | 6° 54ʼ | 0.13 |
[=] has a key material.
S45C module 2 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Key groove b2 × t2 | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | |||||||||||||
| W2SR1-B | R | 1 | ⌀31 | ⌀35 | B | 35 | ⌀12 | ⌀25 | - | 15 | 50 | - | 3° 42′ | 0.22 |
| W2SR1-CF | R | 1 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | - | 3° 42′ | 0.25 |
| W2SR1=C | R | 1 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | 5 x 2.3 | 3° 42′ | 0.24 |
| W2SR2-B | R | 2 | ⌀31 | ⌀35 | B | 35 | ⌀12 | ⌀25 | - | 15 | 50 | - | 7° 25′ | 0.22 |
| W2SR2-CF | R | 2 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | - | 7° 25′ | 0.25 |
| W2SR2=C | R | 2 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | 5 x 2.3 | 7° 25′ | 0.24 |
| W2SL1-B | L | 1 | ⌀31 | ⌀35 | B | 35 | ⌀12 | ⌀25 | - | 15 | 50 | - | 3° 42′ | 0.22 |
| W2SL1=C | L | 1 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | 5 x 2.3 | 3° 42′ | 0.24 |
| W2SL2-B | L | 2 | ⌀31 | ⌀35 | B | 35 | ⌀12 | ⌀25 | - | 15 | 50 | - | 7° 25′ | 0.22 |
| W2SL2=C | L | 2 | ⌀31 | ⌀35 | C | 41 | ⌀14 | ⌀25 | 12 | 12 | 65 | 5 x 2.3 | 7° 25′ | 0.24 |
[=] has a key material.
S45C module 2.5 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Key groove b2 × t2 | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | |||||||||||||
| W2.5SR1-B | R | 1 | ⌀37 | ⌀42 | B | 42 | ⌀14 | ⌀30 | - | 18 | 60 | - | 3° 52ʼ | 0.37 |
| W2.5SR1-CF | R | 1 | ⌀37 | ⌀42 | C | 47 | ⌀16 | ⌀30 | 14 | 14 | 75 | - | 3° 52ʼ | 0.42 |
| W2.5SR1=C | R | 1 | ⌀37 | ⌀42 | C | 47 | ⌀16 | ⌀30 | 14 | 14 | 75 | 5 x 2.3 | 3° 52ʼ | 0.41 |
| W2.5SR2-B | R | 2 | ⌀37 | ⌀42 | B | 42 | ⌀14 | ⌀30 | - | 18 | 60 | - | 7° 46′ | 0.37 |
| W2.5SR2-CF | R | 2 | ⌀37 | ⌀42 | C | 47 | ⌀16 | ⌀30 | 14 | 14 | 75 | - | 7° 46′ | 0.42 |
| W2.5SR2=C | R | 2 | ⌀37 | ⌀42 | C | 47 | ⌀16 | ⌀30 | 14 | 14 | 75 | 5 x 2.3 | 7° 46′ | 0.41 |
| W2.5SL1-B | L | 1 | ⌀37 | ⌀42 | B | 42 | ⌀14 | ⌀30 | - | 18 | 60 | - | 3° 52ʼ | 0.37 |
| W2.5SL1=C | L | 1 | ⌀37 | ⌀42 | C | 47 | ⌀16 | ⌀30 | 14 | 14 | 75 | 5 x 2.3 | 3° 52ʼ | 0.41 |
[=] has a key material.
S45C module 3 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Key groove b2 × t2 | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | |||||||||||||
| W3SR1-B | R | 1 | ⌀44 | ⌀50 | B | 50 | ⌀16 | ⌀36 | - | 20 | 70 | - | 3° 55′ | 0.62 |
| W3SR1-CF | R | 1 | ⌀44 | ⌀50 | C | 55 | ⌀20 | ⌀36 | 15 | 15 | 85 | - | 3° 55′ | 0.67 |
| W3SR1=C | R | 1 | ⌀44 | ⌀50 | C | 55 | ⌀20 | ⌀36 | 15 | 15 | 85 | 6 x 2.8 | 3° 55′ | 0.66 |
| W3SR2-B | R | 2 | ⌀44 | ⌀50 | B | 50 | ⌀16 | ⌀36 | - | 20 | 70 | - | 7° 50ʼ | 0.62 |
| W3SR2-CF | R | 2 | ⌀44 | ⌀50 | C | 55 | ⌀20 | ⌀36 | 15 | 15 | 85 | - | 7° 50ʼ | 0.67 |
| W3SR2=C | R | 2 | ⌀44 | ⌀50 | C | 55 | ⌀20 | ⌀36 | 15 | 15 | 85 | 6 x 2.8 | 7° 50ʼ | 0.66 |
| W3SL1-B | L | 1 | ⌀44 | ⌀50 | B | 50 | ⌀16 | ⌀36 | - | 20 | 70 | - | 3° 55′ | 0.62 |
| W3SL1=C | L | 1 | ⌀44 | ⌀50 | C | 55 | ⌀20 | ⌀36 | 15 | 15 | 85 | 6 x 2.8 | 3° 55′ | 0.66 |
[=] has a key material.
S45C module 4 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length lh | full length l | Advance Angle γ | Weight W (g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W4SR1-B | R | 1 | ⌀62 | ⌀70 | B | 70 | ⌀22 | ⌀50 | 25 | 95 | 3° 42′ | 1.69 |
| W4SR2-B | R | 2 | ⌀62 | ⌀70 | B | 70 | ⌀22 | ⌀50 | 25 | 95 | 7° 25′ | 1.69 |
S45C module 5 dimensions
| Part number | Helix Direction | Number of teeth z | Reference circle diameter d | Outside circle diameter da | Shape | Tooth Width b | Hole diameter dd (H8) | Hub outer diameter dh | Hub length | full length l | Advance Angle γ | Weight W (g) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| lhL | lhR | ||||||||||||
| W5SR1-B | R | 1 | ⌀72 | ⌀82 | B | 90 | ⌀25 | ⌀58 | 5 | 30 | 125 | 3° 58ʼ | 3.00 |
| W5SR2-B | R | 2 | ⌀72 | ⌀82 | B | 90 | ⌀25 | ⌀58 | 5 | 30 | 125 | 7° 59ʼ | 3.00 |