[Ground Worm Shafts, Worm Gears (KWG)] Series list    mating gears :  Ground Worm Shafts, Worm Gears (AGF) Ground Worm Shafts, Worm Gears (AG)
diagram
Specifications
Precision grade KHK W 001 grade 2 Tooth Surface hardness HRC50 - 60
Reference section of gear Axial Surface treatment Black oxide except ground surface
Gear teeth Standard full depth Surface finish Ground
Normal pressure angle 20° Datum reference surface for teeth grinding Shafts h7 (ground position)
Material SCM440 Modifications Possible
Heat treatment Normalizing, tooth surfaces induction hardened    
*For W5-shaped products, no black oxide is applied.
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Catalog No.
Axial
Module
Number of start Nominal Lead Angle Hand of thread Shape Total length
J
Shaft length (L)
K
Neck length (L)
L
Face width
M
Neck length (R)
N
Shaft length (R)
O
Pitch dia.
P
Outside dia.
Q
Neck dia.
R
Shaft dia.
S
Weight
(kg)
Unit Price
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  KWG0.5-R1 
  KWG0.5-R2 
  KWG0.8-R1 
  KWG0.8-R2 
  KWG1-R1 
  KWG1-R2 
  KWG1.5-R1 
  KWG1.5-R2 
  KWG2-R1 
  KWG2-R2 
  KWG2.5-R1 
  KWG2.5-R2 
  KWG3-R1 
  KWG3-R2 
  KWG4-R1 
  KWG4-R2 
  KWG5-R1 
  KWG6-R1 
0.513°11′RW56519 12 34910 60.018 
0.526°20′RW56519 12 34910 60.018 
0.813°49′RW58525 20 401213.6 80.043 
0.827°36′RW58525 20 401213.6 80.043 
113°35′RW6140351030105516181318.20.25 
127°08′RW6140351030105516181318.20.25 
1.513°26′RW6190501540157025282126.20.74 
1.526°51′RW6190501540157025282126.20.74 
215°12′RW6200352540257522261725.20.64 
2210°18′RW6200352540257522261725.20.64 
2.514°46′RW62505027462710030352330.21.27 
2.529°28′RW62505027462710030352330.21.27 
314°31′RW63005530603012538443040.22.66 
328°58′RW63005530603012538443040.22.66 
415°43′RW63607032.57532.515040482945.23.85 
4211°19′RW63607032.57532.515040482945.23.85 
515°43′RW64007530903017550603650.25.75 
615°43′RW640060401004016060724460.28.09 
Product Precautions
[Caution on Product Characteristics]  ①These gears produce axial thrust forces. See precaution for more details.

[Caution on Secondary Operations]  ①Please read “Cautions on Performing Secondary Operations”when performing modification and/or secondary operations of Worm Gears. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.
 ②Due to gear teeth induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 2 to 3 mm). Use carbide tools for the modification of the shaft area near the bottom land.
  Please click here to Unit Price & Delivery Time.