Metric Duplex Worms, Worm Gears Module 2.5

Quality Transmission is the largest North American supplier of off-the-shelf metric gearing.

Specifications
Catalog No.	KWGDL	KWGDLS	AGDL
Precision grade	KHK W 001 grade 1	KHK W 001 grade 1	KHK W 002 grade 1
Reference section of gear	Axial	Axial	Rotating plane
Gear teeth	JIS 3 type Standard full depth	JIS 3 type Standard full depth	Standard full depth
Normal pressure angle	1730'	1730'	1730'
Material	SCM440 (Alloy steel)	SCM440 (Alloy steel)	ABC2 (Aluminum bronz)
Heat treatment	Teeth induction hardened after normalizing	Teeth induction hardened after normalizing	-
Surface hardness	HRC5055	HRC5055	-
Surface treatment	-	Black oxide except ground surfaces	-
Surface finish	Ground	Ground	Cut
Datum reference surface for teeth cutting and grinding	Bore	Shaft (ground portion)	Bore

W4
W6


H1	HB

Module 2.5 Duplex Worms

Catalog No.	Nominal axial module	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Position of reference tooth	Max.allowable shift	Duplex module	Shape	Weight (kgf)	Catalog No.
Catalog No.	Nominal axial module	Number of start	Hand of thread	L_H7	M	N	O	P	Q	R	S	V max.	ma/mb	Shape	Weight (kgf)	Catalog No.
KWGDL2.5-R1 [ DXF\| DWG \| 3D CAD]	2.5	1	R	18	30	37	42	48	17	65	29	10	2.475/2.525	W4	0.37	KWGDL2.5-R1

Nominal Lead Angle 3

52'

Module 2.5 Duplex Worm Shafts

Catalog No.	Nominal axial module	Number of start	Hand of thread	Total length	Shaft length (L)	Neck length (L)	Face width	Neck length (R)	Shaft length (R)	Pitch dia.	Outside dia.	Neck dia.	Shaft dia.	Position of reference tooth	Max.allowable shift	Duplex module	Shape	Weight (kgf)	Catalog No.
Catalog No.	Nominal axial module	Number of start	Hand of thread	J	K	L	M	N	O	P	Q	R	S	T	V max.	ma/mb	Shape	Weight (kgf)	Catalog No.
KWGDLS2.5-R1 [ DXF\| DWG \| 3D CAD]	2.5	1	R	260	85	16	48	26	85	37	42	30	36	29	10	2.475/2.525	W6	2.1	KWGDLS2.5-R1

*NOTE:*	The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.

Module 2.5 Duplex Worm Gears

Catalog No.	Nominal axial module	Reduction ratio	No. of teeth	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Throat dia.	Outside dia.	Face width	Hub width	Total length	Web thickness	Web O.D	Mounting distance	Duplex module	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Weight (kgf)	Catalog No.
Catalog No.	Nominal axial module	Reduction ratio	No. of teeth	Number of start	Hand of thread	A_H7	B	C	D	D'	E	F	G	H	I	J	ma/mb	Shape	Surface durability	Surface durability	Weight (kgf)	Catalog No.
AGDL2.5-20R1 [ DXF\| DWG \| 3D CAD] AGDL2.5-30R1 [ DXF\| DWG \| 3D CAD] AGDL2.5-36R1 [ DXF\| DWG \| 3D CAD] AGDL2.5-40R1 [ DXF\| DWG \| 3D CAD] AGDL2.5-50R1 [ DXF\| DWG \| 3D CAD] AGDL2.5-60R1 [ DXF\| DWG \| 3D CAD]	2.5 2.5 2.5 2.5 2.5 2.5	1/20 1/30 1/36 1/40 1/50 1/60	20 30 36 40 50 60	1 1 1 1 1 1	R R R R R R	15 15 15 15 15 15	40 40 45 45 60 80	50 75 90 100 125 150	55 80 95 105 130 155	57.5 82.5 97.5 107.5 132.5 157.5	22 22 22 22 22 22	15 15 15 15 15 15	37 37 37 37 37 37	- 10 10 10 12 12	- 63 75 86 108 133	43.5 56 63.5 68.5 81 93.5	2.475/2.525 2.475/2.525 2.475/2.525 2.475/2.525 2.475/2.525 2.475/2.525	H1 H1 H1 HB HB HB	2.05 4.54 6.5 7.98 12.25 17.31	20.14 44.51 63.76 78.26 120.1 169.8	0.5 0.77 1.07 1.24 2.09 3.11	AGDL2.5-20R1 AGDL2.5-30R1 AGDL2.5-36R1 AGDL2.5-40R1 AGDL2.5-50R1 AGDL2.5-60R1

*CAUTION:*	Duplex worms and worm gears must be mated in a predetermined orientation. Please see the beginning of this section for details.
*CAUTION:*	When duplex worms and worm gears are set at the reference tooth line, the backlash is zero.
*CAUTION:*	Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
*NOTE:*	If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
*NOTE:*	When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
*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.

AGDL2.5 Allowable Worm Gear Torques(kgfm)

Catalog No.	Worms rpm
Catalog No.	30	100	300	600	900	1200	1800
AGDL2.5-20R1 AGDL2.5-30R1 AGDL2.5-36R1 AGDL2.5-40R1 AGDL2.5-50R1 AGDL2.5-60R1	3.88 8.21 11.55 14.05 21.23 29.71	3.20 6.84 9.64 11.73 17.74 24.95	2.50 5.42 7.70 9.42 14.37 20.23	2.05 4.54 6.50 7.98 12.25 17.31	1.79 3.98 5.71 7.01 10.84 15.48	1.64 3.61 5.20 6.39 9.92 14.12	1.40 3.15 4.52 5.55 8.60 12.31