KHK Web Catalog Dimension table

[Steel Screw Gears (SN)] Series list

diagram

Steel Screw Gears (SN)

Specifications
Precision grade	JIS B 1702-1 grade　N9 (*1)	Material	S45C
Reference section of gear	Normal plane	Surface treatment	Black oxide
Gear teeth	Standard full depth	Surface finish	Cut
Normal pressure angle	20°	Reference section of gear	Bore (H7)
Helix angle	45°	Modifications	Possible

(*1) Old JIS B 1702 grade 5

s1003

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70 items in total

Module

No. of Teeth

< 1 | 2 >

precaution

Catalog No.

Module	No. of teeth	Spiral hand	Shape	Bore A	Hub dia. B	Pitch dia. C	Outside dia. D	Face width E	Hub width F	Total length G	Allowable torque(kgf·m) Surface durability	Backlash low (mm)	Backlash up (mm)	Weight (kg)	Unit Price Click Here

SN1-13R

SN1-13L

SN1-15R

SN1-15L

SN1-20R

SN1-20L

SN1-26R

SN1-26L

SN1-30R

SN1-30L

SN1.5-10R

SN1.5-10L

SN1.5-13R

SN1.5-13L

SN1.5-15R

SN1.5-15L

SN1.5-20R

SN1.5-20L

SN1.5-26R

SN1.5-26L

SN1.5-30R

SN1.5-30L

SN2-10R

SN2-10L

SN2-13R

SN2-13L

SN2-15R

SN2-15L

SN2-20R

SN2-20L

SN2-26R

SN2-26L

SN2-30R

SN2-30L

SN2.5-10R

SN2.5-10L

SN2.5-13R

SN2.5-13L

SN2.5-15R

SN2.5-15L

SN2.5-20R

SN2.5-20L

SN2.5-26R

SN2.5-26L

SN2.5-30R

SN2.5-30L

SN3-10R

SN3-10L

SN3-13R

SN3-13L

1	13	R	S1	6	15	18.38	20.38	10	10	20	0.019	0.08	0.18	0.030
1	13	L	S1	6	15	18.38	20.38	10	10	20	0.019	0.08	0.18	0.030
1	15	R	S1	6	18	21.21	23.21	10	10	20	0.029	0.08	0.18	0.043
1	15	L	S1	6	18	21.21	23.21	10	10	20	0.029	0.08	0.18	0.043
1	20	R	S1	8	25	28.28	30.28	10	10	20	0.068	0.08	0.18	0.080
1	20	L	S1	8	25	28.28	30.28	10	10	20	0.068	0.08	0.18	0.080
1	26	R	S1	10	30	36.77	38.77	10	10	20	0.14	0.10	0.22	0.13
1	26	L	S1	10	30	36.77	38.77	10	10	20	0.14	0.10	0.22	0.13
1	30	R	S1	10	35	42.43	44.43	10	10	20	0.22	0.10	0.22	0.17
1	30	L	S1	10	35	42.43	44.43	10	10	20	0.22	0.10	0.22	0.17
1.5	10	R	S1	8	16	21.21	24.21	15	10	25	0.029	0.08	0.20	0.048
1.5	10	L	S1	8	16	21.21	24.21	15	10	25	0.029	0.08	0.20	0.048
1.5	13	R	S1	10	23	27.58	30.58	15	10	25	0.063	0.10	0.22	0.088
1.5	13	L	S1	10	23	27.58	30.58	15	10	25	0.063	0.10	0.22	0.088
1.5	15	R	S1	10	25	31.82	34.82	15	10	25	0.095	0.10	0.22	0.12
1.5	15	L	S1	10	25	31.82	34.82	15	10	25	0.095	0.10	0.22	0.12
1.5	20	R	S1	12	30	42.43	45.43	15	10	25	0.22	0.10	0.22	0.20
1.5	20	L	S1	12	30	42.43	45.43	15	10	25	0.22	0.10	0.22	0.20
1.5	26	R	S1	12	40	55.15	58.15	15	10	25	0.46	0.12	0.26	0.36
1.5	26	L	S1	12	40	55.15	58.15	15	10	25	0.46	0.12	0.26	0.36
1.5	30	R	S1	12	45	63.64	66.64	15	10	25	0.69	0.12	0.26	0.48
1.5	30	L	S1	12	45	63.64	66.64	15	10	25	0.69	0.12	0.26	0.48
2	10	R	S1	12	22	28.28	32.28	20	15	35	0.068	0.10	0.22	0.11
2	10	L	S1	12	22	28.28	32.28	20	15	35	0.068	0.10	0.22	0.11
2	13	R	S1	12	30	36.77	40.77	20	15	35	0.14	0.12	0.26	0.22
2	13	L	S1	12	30	36.77	40.77	20	15	35	0.14	0.12	0.26	0.22
2	15	R	S1	12	35	42.43	46.43	20	15	35	0.22	0.12	0.26	0.30
2	15	L	S1	12	35	42.43	46.43	20	15	35	0.22	0.12	0.26	0.30
2	20	R	S1	15	45	56.57	60.57	20	15	35	0.49	0.12	0.26	0.53
2	20	L	S1	15	45	56.57	60.57	20	15	35	0.49	0.12	0.26	0.53
2	26	R	S1	20	60	73.54	77.54	20	15	35	1.03	0.14	0.30	0.91
2	26	L	S1	20	60	73.54	77.54	20	15	35	1.03	0.14	0.30	0.91
2	30	R	S1	20	65	84.85	88.85	20	15	35	1.53	0.14	0.30	1.19
2	30	L	S1	20	65	84.85	88.85	20	15	35	1.53	0.14	0.30	1.19
2.5	10	R	S1	12	26	35.36	40.36	22	16	38	0.13	0.12	0.24	0.20
2.5	10	L	S1	12	26	35.36	40.36	22	16	38	0.13	0.12	0.24	0.20
2.5	13	R	S1	15	35	45.96	50.96	22	16	38	0.27	0.14	0.28	0.35
2.5	13	L	S1	15	35	45.96	50.96	22	16	38	0.27	0.14	0.28	0.35
2.5	15	R	S1	15	40	53.03	58.03	22	16	38	0.41	0.14	0.28	0.49
2.5	15	L	S1	15	40	53.03	58.03	22	16	38	0.41	0.14	0.28	0.49
2.5	20	R	S1	20	60	70.71	75.71	22	16	38	0.92	0.14	0.28	0.94
2.5	20	L	S1	20	60	70.71	75.71	22	16	38	0.92	0.14	0.28	0.94
2.5	26	R	S1	20	70	91.92	96.92	22	16	38	1.91	0.16	0.34	1.54
2.5	26	L	S1	20	70	91.92	96.92	22	16	38	1.91	0.16	0.34	1.54
2.5	30	R	S1	20	80	106.07	111.07	22	16	38	2.83	0.16	0.34	2.06
2.5	30	L	S1	20	80	106.07	111.07	22	16	38	2.83	0.16	0.34	2.06
3	10	R	S1	15	34	42.43	48.43	25	18	43	0.22	0.12	0.26	0.35
3	10	L	S1	15	34	42.43	48.43	25	18	43	0.22	0.12	0.26	0.35
3	13	R	S1	20	45	55.15	61.15	25	18	43	0.46	0.14	0.32	0.59
3	13	L	S1	20	45	55.15	61.15	25	18	43	0.46	0.14	0.32	0.59

Product Precautions

[Caution on Product Characteristics]	①Mating screw gears are made of the same material and may cause abrasion and scoring. It is recommended to mate Screw Gears composed of different materials.
	②The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see precaution for more details.
	③The backlash values shown in the table are the theoretical values for the backlash in the normal direction of a pair of identical gears in mesh.
	④For offset shaft applications, match a RH with a RH, or LH with a LH , meshed to make a set of screw gears. For parallel shaft applications, mesh opposite hands (RH and LH) of helical gear sets. See precaution for more details.
	⑤If the bore size is less thanφ4, the tolerance class is H8. If the bore size is φ5 orφ6, and the hole length exceeds 3 times of the bore size, the class is also H8.

[Caution on Secondary Operations]	①Please care must be exercised when performing modification and/or secondary operations of Screw Gears. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.
	②Avoid performing secondary operations that narrow the tooth width. as it affects precision and strength.

Please click here to Unit Price & Delivery Time.