Specifications Precision grade JIS Grade N6 (JIS B 1702-1:1998) JIS Grade 2 (JIS B 1702:1976) Heat treatment Normalized, teeth surfaces induction hardened Reference section of gear Rotating plane Core hardness HB225260 Gear teeth Standard full depth Surface hardness HRC5055 Transverse pressure 20 Surface treatment Black oxide except ground surfaces Helix angle 2130' Surface finish Ground Material SCM440 (Alloy steel) Datum reference surface for gear grinding Bore

S1

Module 2.5

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Catalog No.	Hand of thread	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque (kgfm)		Allowable torque (Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
		m	z	AH7	B	C	D	E	F	G		Bending strength	Surface durability	Bending strength	Surface durability
KHG2.5-15R [ DXF | DWG | 3D CAD] KHG2.5-15L [ DXF | DWG | 3D CAD]	R L	2.5	15	15	30	37.5	42.5	20	14	34	S1	7.324	4.19	71.82	41.09	0.1 0.2	0.21	KHG2.5-15R KHG2.5-15L
KHG2.5-16R [ DXF | DWG | 3D CAD] KHG2.5-16L [ DXF | DWG | 3D CAD]	R L	2.5	16	15	32	40	45	20	14	34	S1	8.093	4.888	79.36	47.93	0.1 0.2	0.25	KHG2.5-16R KHG2.5-16L
KHG2.5-18R [ DXF | DWG | 3D CAD] KHG2.5-18L [ DXF | DWG | 3D CAD]	R L	2.5	18	15	38	45	50	20	14	34	S1	9.665	6.465	94.78	63.4	0.1 0.2	0.34	KHG2.5-18R KHG2.5-18L
KHG2.5-20R [ DXF | DWG | 3D CAD] KHG2.5-20L [ DXF | DWG | 3D CAD]	R L	2.5	20	18	40	50	55	20	14	34	S1	11.28	8.285	110.6	81.25	0.1 0.2	0.39	KHG2.5-20R KHG2.5-20L
KHG2.5-22R [ DXF | DWG | 3D CAD] KHG2.5-22L [ DXF | DWG | 3D CAD]	R L	2.5	22	18	44	55	60	20	14	34	S1	12.92	10.26	126.7	100.6	0.120.22	0.49	KHG2.5-22R KHG2.5-22L
KHG2.5-24R [ DXF | DWG | 3D CAD] KHG2.5-24L [ DXF | DWG | 3D CAD]	R L	2.5	24	18	48	60	65	20	14	34	S1	14.59	12.47	143.1	122.3	0.120.22	0.6	KHG2.5-24R KHG2.5-24L
KHG2.5-25R [ DXF | DWG | 3D CAD] KHG2.5-25L [ DXF | DWG | 3D CAD]	R L	2.5	25	20	50	62.5	67.5	20	14	34	S1	15.43	13.66	151.3	134	0.120.22	0.64	KHG2.5-25R KHG2.5-25L
KHG2.5-26R [ DXF | DWG | 3D CAD] KHG2.5-26L [ DXF | DWG | 3D CAD]	R L	2.5	26	20	50	65	70	20	14	34	S1	16.28	14.91	159.7	146.2	0.120.22	0.65	KHG2.5-26R KHG2.5-26L
KHG2.5-28R [ DXF | DWG | 3D CAD] KHG2.5-28L [ DXF | DWG | 3D CAD]	R L	2.5	28	20	60	70	75	20	14	34	S1	17.99	17.6	176.4	172.6	0.120.22	0.87	KHG2.5-28R KHG2.5-28L
KHG2.5-30R [ DXF | DWG | 3D CAD] KHG2.5-30L [ DXF | DWG | 3D CAD]	R L	2.5	30	20	65	75	80	20	14	34	S1	19.72	20.52	193.4	201.2	0.120.22	1	KHG2.5-30R KHG2.5-30L
KHG2.5-32R [ DXF | DWG | 3D CAD] KHG2.5-32L [ DXF | DWG | 3D CAD]	R L	2.5	32	20	70	80	85	20	14	34	S1	21.47	23.69	210.5	232.3	0.120.22	1.2	KHG2.5-32R KHG2.5-32L
KHG2.5-35R [ DXF | DWG | 3D CAD] KHG2.5-35L [ DXF | DWG | 3D CAD]	R L	2.5	35	20	70	87.5	92.5	20	14	34	S1	24.11	28.92	236.4	283.6	0.120.22	1.3	KHG2.5-35R KHG2.5-35L
KHG2.5-36R [ DXF | DWG | 3D CAD] KHG2.5-36L [ DXF | DWG | 3D CAD]	R L	2.5	36	20	70	90	95	20	14	34	S1	24.99	30.79	245.1	301.9	0.120.22	1.4	KHG2.5-36R KHG2.5-36L
KHG2.5-40R [ DXF | DWG | 3D CAD] KHG2.5-40L [ DXF | DWG | 3D CAD]	R L	2.5	40	25	70	100	105	20	14	34	S1	27.31	37.21	267.8	364.9	0.120.22	1.6	KHG2.5-40R KHG2.5-40L
KHG2.5-44R [ DXF | DWG | 3D CAD] KHG2.5-44L [ DXF | DWG | 3D CAD]	R L	2.5	44	25	75	110	115	20	14	34	S1	30.75	45.97	301.6	450.8	0.140.24	1.9	KHG2.5-44R KHG2.5-44L
KHG2.5-45R [ DXF | DWG | 3D CAD] KHG2.5-45L [ DXF | DWG | 3D CAD]	R L	2.5	45	25	75	112.5	117.5	20	14	34	S1	31.62	48.32	310.1	473.9	0.140.24	2	KHG2.5-45R KHG2.5-45L
KHG2.5-48R [ DXF | DWG | 3D CAD] KHG2.5-48L [ DXF | DWG | 3D CAD]	R L	2.5	48	25	75	120	125	20	14	34	S1	34.22	55.75	335.6	546.7	0.140.24	2.2	KHG2.5-48R KHG2.5-48L
KHG2.5-50R [ DXF | DWG | 3D CAD] KHG2.5-50L [ DXF | DWG | 3D CAD]	R L	2.5	50	25	80	125	130	20	14	34	S1	35.96	61.03	352.6	598.5	0.140.24	2.4	KHG2.5-50R KHG2.5-50L
KHG2.5-52R [ DXF | DWG | 3D CAD] KHG2.5-52L [ DXF | DWG | 3D CAD]	R L	2.5	52	25	80	130	135	20	14	34	S1	37.7	66.52	369.7	652.3	0.140.24	2.5	KHG2.5-52R KHG2.5-52L
KHG2.5-60R [ DXF | DWG | 3D CAD] KHG2.5-60L [ DXF | DWG | 3D CAD]	R L	2.5	60	25	80	150	155	20	14	34	S1	44.72	90.77	438.5	890.1	0.140.24	3.3	KHG2.5-60R KHG2.5-60L

CAUTION: Right handed and left handed helical gears in the same module are designed to mesh as a pair, but they are not interchangeable with SH type helical gears.

NOTE: It is possible to perform secondary operations except on the tooth surfaces. Please exercise caution not to introduce bore and face runouts.

NOTE: The allowable torques shown in the table are calculated values according to JGMA Standards 401-01 and 402-01.The backlash values shown in the table are the theoretical values of a pair of identical gears in mesh. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.

USEFUL HINT: Because these gears are not produced using the axial module, they are interchangeable with a pair of spur gears with the same center distance. The change to helical gears will result in reduction of gear noise and increase in gear strength.