Specifications Catalog No. SW BG CG Precision grade KHK W 001 grade 4 KHK W 002 grade 4 KHK W 002 grade 4 Reference section of gear Normal plane Normal plane Normal plane Gear teeth JIS 3 type Standard full depth Standard full depth Standard full depth Normal pressure angle 1430' 1430' 1430' Material S45C (Carbon steel) PBC2 and BC6 (Bronz) FC200 (Gray iron) Heat treatment - - - Surface hardness Less than 194 - - Surface treatment Black oxide - - Surface finish Cut Cut Cut Datum reference surface for gear cutting Bore Bore Bore

W3 H1 H2 HB

Module 5 Worms

Catalog No. Number of start Hand of thread Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L) Total length Screw Shape Weight (kgf) LH7 M N O P Q Q' R Size S SW5-R1 [ DXF | DWG | 3D CAD] SW5-R2 [ DXF | DWG | 3D CAD] 1 2 R R 25 25 56 56 70 70 80 80 85 85 20 20 20 20 125 125 - - - - W3 W3 2.9 2.9 SW5-L1 [ DXF | DWG | 3D CAD] SW5-L2 [ DXF | DWG | 3D CAD] 1 2 L L 25 25 56 56 70 70 80 80 85 85 20 20 20 20 125 125 - - - - W3 W3 2.9 2.9

Lead Angle R1(L1) 406' R2(L2) 813'

Module 5 Worm Gears

Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Throat dia.	Outside dia.	Face width	Hub width	Total length	Mounting distance	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
						AH7	B	C	D	D'	E	F	G	J		Surface durability	Surface durability
BG5-20R1 [ DXF|DWG | 3D CAD] BG5-20R2 [ DXF|DWG | 3D CAD]	1/20 1/10	20 20	-0.026 -0.104	1 2	R R	22 22	75 75	100.26 101.04	110 110	113 113	45 45	20 20	65 65	85 85	H1 H1	4.47 4.18	43.8 41.01	0.250.35 0.250.35	3.6 3.6	BG5-20R1 BG5-20R2
BG5-20L1 [ DXF|DWG | 3D CAD] BG5-20L2 [ DXF|DWG | 3D CAD]	1/20 1/10	20 20	-0.026 -0.104	1 2	L L	22 22	75 75	100.26 101.04	110 110	113 113	45 45	20 20	65 65	85 85	H1 H1	4.47 4.18	43.8 41.01	0.250.35 0.250.35	3.6 3.6	BG5-20L1 BG5-20L2

Module 5 Worm Gears

Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Throat dia.	Outside dia.	Face width	Hub width (R)	Hub width (L)	Total length	Web thickness	Web O.D.	Mounting distance	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
						AH7	B	C	D	D'	E	F	F'	G	H	I	J		Surface durability	Surface durability
CG5-20R1 [ DXF|DWG | 3D CAD] CG5-20R2 [ DXF|DWG | 3D CAD] CG5-30R1 [ DXF|DWG | 3D CAD] CG5-30R2 [ DXF|DWG | 3D CAD] CG5-40R1 [ DXF|DWG | 3D CAD]	1/20 1/10 1/30 1/15 1/40	20 20 30 30 40	-0.026 -0.104 -0.038 -0.155 -0.051	1 2 1 2 1	R R R R R	22 22 22 22 22	75 75 75 75 90	100.26 101.04 150.38 151.56 200.51	110 110 160 160 210	113 113 163 163 213	45 45 45 45 45	20 20 20 20 20	- - - - -	65 65 65 65 65	- - 13 13 16	- - 127 127 172	85 85 110 110 135	H1 H1 HB HB H2	4.47 4.18 9.87 9.24 17.35	43.8 41.01 96.79 90.62 170.2	0.250.35 0.250.35 0.250.35 0.250.35 0.250.35	3 3 4.4 4.4 7	CG5-20R1 CG5-20R2 CG5-30R1 CG5-30R2 CG5-40R1
CG5-50R1 [ DXF|DWG | 3D CAD] CG5-50R2 [ DXF|DWG | 3D CAD] CG5-60R1 [ DXF|DWG | 3D CAD]	1/50 1/25 1/60	50 50 60	-0.064 -0.259 -0.077	1 2 1	R R R	22 22 22	90 90 100	250.61 252.59 300.77	260 260 310	263 263 313	45 45 45	20 20 20	- - -	65 65 65	16 16 13	223 223 276	160 160 185	H2 H2 H2	26.64 25.37 37.64	261.2 248.8 369.1	0.250.35 0.250.35 0.250.35	9.2 9.2 13	CG5-50R1 CG5-50R2 CG5-60R1

CAUTION:	Before assembling or performing any secondary operations, please carefully read the "Application Hints" at the beginning of this section.
CAUTION:	These worm gears are profile shifted to create the proper center distance.
CAUTION:	H2 type worm gears have cast lightening holes in the web.
NOTE:	Allowable torques shown in the table are the calculated values according to JGMA Standards 405-01 when the worm is rotating at 600 rpm, The table below shows the allowable worm gear torques at selected worm speeds.
NOTE:	The items listed above as are available from stock until current inventory is exhausted. At that time the product will only be available on a made to order custom basis.

BG5 Allowable Worm Gear Torques(kgfm)

CG5 Allowable Worm Gear Torques(kgfm)

 

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