KHK Web Catalog Dimension table

[Gear Couplings Inner hubs(GC)] Series list

mating gears : Gear Couplings (GC-I)

diagram

Gear Couplings Inner hubs(GC)

Specifications
Gear teeth	Standard full depth (Inner hubs are Crouwning)	Surface treatment	Unichromic plating
Pressure angle	20°	Surface finish	Cut
Material	S45C	Datum reference surface for teeth cutting	Bore (H7)(Outer ring is Outside diameter)
Heat treatment	Tooth surfaces induction hardened	Modifications	Possible
Surface hardness	HRC45 - 55

t2003

t2001

t2002

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全 12 items in total

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precaution

Catalog No.

Module	No. of teeth	Shape	Bore A	Hub dia. B	Pitch dia. C	Outside dia. D	Face width E	Hub width F	Total length G	Screw	Threaded hole J	K	L	M	Total Length N	Keyway Width	Keyway Depth	Allowable torque(kgf·m) Bending strength	Backlash low (mm)	Backlash up (mm)	Weight (kg)	Unit Price Click Here

GC1-12S

GC1-20

GC1-22

GC1-25

GC2-20S

GC2-30

GC2-32

GC2-35

GC2-40

GC3-20S

GC3-45

GC3-50

2	25	T2	12	45	50	54	10	25	35			23	1.95	42.5	73				0.40	0.60	0.43
2	25	TK	20	45	50	54	10	25	35	M5	10	23	1.95	42.5	73	5	2.3	7	0.40	0.60	0.37
2	25	TK	22	45	50	54	10	25	35	M6	10	23	1.95	42.5	73	7	3	10	0.40	0.60	0.35
2	25	TK	25	45	50	54	10	25	35	M6	10	23	1.95	42.5	73	7	3	14	0.40	0.60	0.32
2	40	T2	20	70	80	84	15	40	55			37	2.7	67	115				0.40	0.60	1.66
2	40	TK	30	70	80	84	15	40	55	M6	13	37	2.7	67	115	7	3	25	0.40	0.60	1.48
2	40	TK	32	70	80	84	15	40	55	M10	13	37	2.7	67	115	10	3.3	30	0.40	0.60	1.42
2	40	TK	35	70	80	84	15	40	55	M10	13	37	2.7	67	115	10	3.3	40	0.40	0.60	1.36
2	40	TK	40	70	80	84	15	40	55	M10	13	37	2.7	67	115	10	3.3	50	0.40	0.60	1.23
2.5	42	T2	20	90	105	110	20	45	65			42	3.2	86.5	135				0.40	0.60	3.43
2.5	42	TK	45	90	105	110	20	45	65	M10	20	42	3.2	86.5	135	12	3.3	80	0.40	0.60	2.74
2.5	42	TK	50	90	105	110	20	45	65	M10	20	42	3.2	86.5	135	12	3.3	90	0.40	0.60	2.56

Product Precautions

[Caution on Product Characteristics]	①"S" denotes minimum bore products. Inner hubs come with snap rings and set screws.
	②The allowable torque in the table is obtained from the shear strength of the keyways. The shear strength of a keyway is assumed to be 49 MPa（5kgf/mm2).

[Caution on Secondary Operations]	①Due 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.