[Ground Worms, Worm Gears (SWG)] Series list    mating gears :  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 (*1)
Gear teeth Standard full depth Surface finish Ground
Normal pressure angle 20° Datum reference surface for teeth grinding Bore (H7)
Material S45C Modifications Possible
Heat treatment Tooth surfaces induction hardened    
*Precision grade of J Series products corresponds to an 'equivalent'.(*1)For J Serious products, without black oxide repeatedly applied on secondary-operated parts.
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Catalog No.
Axial
Module
Number of start Nominal Lead Angle Hand of thread Shape Bore
L
Hub dia.
M
Pitch dia.
N
Outside dia.
O
Face width
P
Hub width (R)
Q
Hub width (L)
Q'
Total length
R
Key width Key depth Screw Size Screw
S
Weight
(kg)
Unit Price
Click Here
Prices of J Series Products
1-4
Prices of J Series Products
5-10
Prices of J Series Products
11-20
  SWG1-R1 
  SWG1-R2 
  SWG1.5-R1 
 SWG1.5-R1J10 
  SWG1.5-R2 
 SWG1.5-R2J10 
  SWG2-R1 
 SWG2-R1J12 
 SWG2-R1J14 
  SWG2-R2 
 SWG2-R2J12 
 SWG2-R2J14 
  SWG2.5-R1 
 SWG2.5-R1J15 
 SWG2.5-R1J16 
 SWG2.5-R1J17 
  SWG2.5-R2 
 SWG2.5-R2J15 
 SWG2.5-R2J16 
 SWG2.5-R2J17 
  SWG3-R1 
 SWG3-R1J17 
 SWG3-R1J18 
 SWG3-R1J19 
 SWG3-R1J20 
  SWG3-R2 
 SWG3-R2J17 
 SWG3-R2J18 
 SWG3-R2J19 
 SWG3-R2J20 
  SWG3-R3 
 SWG3-R3J17 
 SWG3-R3J18 
 SWG3-R3J19 
 SWG3-R3J20 
  SWG4-R1 
  SWG4-R2 
  SWG4-R3 
  SWG5-R1 
  SWG5-R2 
  SWG6-R1 
  SWG6-R2 
113°35′RW28 161820  32  M450.037    
127°08′RW28 161820  32  M450.037    
1.513°26′RW1102025283010 40    0.12    
1.513°26′RW1K102025283010 4041.8M450.11    
1.526°51′RW1102025283010 40    0.12    
1.526°51′RW1K102025283010 4041.8M450.11    
213°41′RW3122531353215350    0.21    
213°41′RW3K12253135321535041.8M47.50.21    
213°41′RW3K14253135321535052.3M47.50.19    
227°21′RW3122531353215350    0.21    
227°21′RW3K12253135321535041.8M47.50.21    
227°21′RW3K14253135321535052.3M47.50.19    
2.513°52′RW3153037424517365    0.40    
2.513°52′RW3K15303742451736552.3M48.50.39    
2.513°52′RW3K16303742451736552.3M48.50.38    
2.513°52′RW3K17303742451736552.3M48.50.37    
2.527°42′RW3153037424517365    0.40    
2.527°42′RW3K15303742451736552.3M48.50.39    
2.527°42′RW3K16303742451736552.3M48.50.38    
2.527°42′RW3K17303742451736552.3M48.50.37    
313°54′RW3163544505020474    0.66    
313°54′RW3K17354450502047452.3M4100.64    
313°54′RW3K18354450502047462.8M5100.62    
313°54′RW3K19354450502047462.8M5100.60    
313°54′RW3K20354450502047462.8M5100.58    
327°46′RW3163544505020474    0.66    
327°46′RW3K17354450502047452.3M4100.64    
327°46′RW3K18354450502047462.8M5100.62    
327°46′RW3K19354450502047462.8M5100.60    
327°46′RW3K20354450502047462.8M5100.58    
3311°34′RW3163544505020474    0.66    
3311°34′RW3K17354450502047452.3M4100.64    
3311°34′RW3K18354450502047462.8M5100.62    
3311°34′RW3K19354450502047462.8M5100.60    
3311°34′RW3K20354450502047462.8M5100.58    
413°41′RW32250627070255100    1.82    
427°21′RW32250627070255100    1.82    
4310°57′RW32250627070255100    1.82    
514°05′RW32556708085305120    2.78    
528°08′RW32556708085305120    2.78    
614°17′RW330638092100355140    4.15    
628°32′RW330638092100355140    4.15    
Product Precautions
[Precaution on J Series Products]  ①Since J series are available-on-request products, it requires a lead-time within 2 working-days (excludes the day ordered), after placing an order. Number of products we can handle for one order is 1 to 20 units. In case of ordering products over 20 units, we shall submit a quote.
 ②Keyways are made according to JIS B1301 standards and Js 9 tolerance. For products with a tapped hole, a set screw is included.

[Caution on Product Characteristics]  ①For W2-shaped products, a set screw is included. When setting up the mating wheel, make sure no friction occurs within the set screw.
 ②These 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).
  Please click here to Unit Price & Delivery Time.