KHK Web Catalog Dimension table

[Ground Spiral Miter Gears (SMSG)] Series list

diagram

Ground Spiral Miter Gears (SMSG)

Specifications
Precision grade	JIS B 1704 grade 2	Tooth Surface hardness	HRC45 - 55
Gear teeth	Gleason	Surface treatment	Black oxide except ground surface
Pressure angle	20°	Surface finish	Ground
Helix angle	35°	Datum reference surface for teeth grinding	Bore (H7)
Material	S45C	Modifications	Possible
Heat treatment	Tooth surfaces induction hardened

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全 34 items in total

Module

No. of Teeth

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precaution

Catalog No.

Module	Number of Teeth	Hand of thread	Shape	Bore A	Hub dia. B	Pitch dia. C	Outside dia. D	Mounting distance E	Total length F	Crown to back length G	Hub width H	Length of bore I	Face width J	Holding surface dia. K	Allowable torque(kgf·m) Bending strength	Allowable torque(kgf·m) Surface durability	Backlash low (mm)	Backlash up (mm)	Weight (kg)	Unit Price Click Here	Partner

SMSG2-20R

SMSG2-20L

SMSG2.5-20R

SMSG2.5-20L

SMSG3-20R

SMSG3-20L

SMSG3.5-20R

SMSG3.5-20L

SMSG4-20R

SMSG4-20L

SMSG5-20R

SMSG5-20L

SMSG2-25R

SMSG2-25L

SMSG2.5-25R

SMSG2.5-25L

SMSG3-25R

SMSG3-25L

SMSG3.5-25R

SMSG3.5-25L

SMSG4-25R

SMSG4-25L

SMSG5-25R

SMSG5-25L

SMSG2-30R

SMSG2-30L

SMSG2.5-30R

SMSG2.5-30L

SMSG3-30R

SMSG3-30L

SMSG3.5-30R

SMSG3.5-30L

SMSG4-30R

SMSG4-30L

2	20	R	B3	12	34	40	42.4	37	24.75	18.2	14	22	10	21.72	0.80	0.69	0.05	0.11	0.15		SMSG2-20L
2	20	L	B3	12	34	40	42.4	37	24.75	18.2	14	22	10	21.72	0.80	0.69	0.05	0.11	0.15		SMSG2-20R
2.5	20	R	B3	14	42	50	52.94	48	32.42	24.47	19	29	12	28.06	1.52	1.35	0.06	0.12	0.30		SMSG2.5-20L
2.5	20	L	B3	14	42	50	52.94	48	32.42	24.47	19	29	12	28.06	1.52	1.35	0.06	0.12	0.30		SMSG2.5-20R
3	20	R	B3	16	50	60	63.72	58	39.6	29.86	23	35	15	31.57	2.69	2.42	0.07	0.13	0.52		SMSG3-20L
3	20	L	B3	16	50	60	63.72	58	39.6	29.86	23	35	15	31.57	2.69	2.42	0.07	0.13	0.52		SMSG3-20R
3.5	20	R	B3	20	60	70	74.47	65	43.81	32.23	25	40	18	39.09	4.35	3.96	0.08	0.14	0.82		SMSG3.5-20L
3.5	20	L	B3	20	60	70	74.47	65	43.81	32.23	25	40	18	39.09	4.35	3.96	0.08	0.14	0.82		SMSG3.5-20R
4	20	R	B3	20	64	80	84.88	75	50.51	37.44	27	45	20	43.43	6.39	5.90	0.10	0.16	1.15		SMSG4-20L
4	20	L	B3	20	64	80	84.88	75	50.51	37.44	27	45	20	43.43	6.39	5.90	0.10	0.16	1.15		SMSG4-20R
5	20	R	B3	25	80	100	105.9	90	60.16	42.95	30	54	26	54.46	11.8	11.1	0.10	0.16	2.13		SMSG5-20L
5	20	L	B3	25	80	100	105.9	90	60.16	42.95	30	54	26	54.46	11.8	11.1	0.10	0.16	2.13		SMSG5-20R
2	25	R	B3	12	40	50	52.4	40	24.19	16.2	10	20	12	26.06	1.28	1.37	0.05	0.11	0.21		SMSG2-25L
2	25	L	B3	12	40	50	52.4	40	24.19	16.2	10	20	12	26.06	1.28	1.37	0.05	0.11	0.21		SMSG2-25R
2.5	25	R	B3	16	50	62.5	65.54	50	30.24	20.27	12.5	26	15	34.57	2.50	2.74	0.06	0.12	0.42		SMSG2.5-25L
2.5	25	L	B3	16	50	62.5	65.54	50	30.24	20.27	12.5	26	15	34.57	2.50	2.74	0.06	0.12	0.42		SMSG2.5-25R
3	25	R	B3	20	60	75	78.77	60	37.57	24.39	15	32	20	37.43	4.59	5.10	0.07	0.13	0.74		SMSG3-25L
3	25	L	B3	20	60	75	78.77	60	37.57	24.39	15	32	20	37.43	4.59	5.10	0.07	0.13	0.74		SMSG3-25R
3.5	25	R	B3	25	70	87.5	91.81	70	42.98	28.41	17.5	37	22	46.77	7.05	7.97	0.08	0.14	1.14		SMSG3.5-25L
3.5	25	L	B3	25	70	87.5	91.81	70	42.98	28.41	17.5	37	22	46.77	7.05	7.97	0.08	0.14	1.14		SMSG3.5-25R
4	25	R	B3	28	80	100	104.7	80	49.14	32.35	20	43	25	55.29	9.68	11.1	0.10	0.16	1.71		SMSG4-25L
4	25	L	B3	28	80	100	104.7	80	49.14	32.35	20	43	25	55.29	9.68	11.1	0.10	0.16	1.71		SMSG4-25R
5	25	R	B3	28	100	125	130.86	100	60.59	40.43	25	50	30	65.15	18.5	21.7	0.12	0.18	3.39		SMSG5-25L
5	25	L	B3	28	100	125	130.86	100	60.59	40.43	25	50	30	65.15	18.5	21.7	0.12	0.18	3.39		SMSG5-25R
2	30	R	B3	12	45	60	62.42	50	29.27	21.21	12.5	25	12	36.06	1.70	2.18	0.05	0.11	0.37		SMSG2-30L
2	30	L	B3	12	45	60	62.42	50	29.27	21.21	12.5	25	12	36.06	1.70	2.18	0.05	0.11	0.37		SMSG2-30R
2.5	30	R	B3	16	60	75	78.04	62	36.08	26.02	17	32	15	47.57	3.32	4.36	0.06	0.12	0.76		SMSG2.5-30L
2.5	30	L	B3	16	60	75	78.04	62	36.08	26.02	17	32	15	47.57	3.32	4.36	0.06	0.12	0.76		SMSG2.5-30R
3	30	R	B3	20	70	90	93.61	75	45.25	31.8	20	40	20	53.43	6.15	8.20	0.07	0.13	1.32		SMSG3-30L
3	30	L	B3	20	70	90	93.61	75	45.25	31.8	20	40	20	53.43	6.15	8.20	0.07	0.13	1.32		SMSG3-30R
3.5	30	R	B3	25	90	105	109.21	85	49.4	34.6	25	45	22	67.77	8.68	11.8	0.08	0.14	2.19		SMSG3.5-30L
3.5	30	L	B3	25	90	105	109.21	85	49.4	34.6	25	45	22	67.77	8.68	11.8	0.08	0.14	2.19		SMSG3.5-30R
4	30	R	B3	28	100	120	124.71	95	54.28	37.35	25	50	25	79.29	12.9	17.8	0.10	0.16	3.07		SMSG4-30L
4	30	L	B3	28	100	120	124.71	95	54.28	37.35	25	50	25	79.29	12.9	17.8	0.10	0.16	3.07		SMSG4-30R

Product Precautions

[Caution on Product Characteristics]	①A sets of miter gears must be identical in module and number of teeth, but opposite in spiral hands.
	②The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see precaution for more details.
	③Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the corner chamfering of the gear tips.
	④These gears produce axial thrust forces. See precaution for more details.

[Caution on Secondary Operations]	①Please care must be exercised when performing modification and/or secondary operations of Miter 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. 1 mm).

Please click here to Unit Price & Delivery Time.