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Automation Components
Rotary Power Transmission
Gears
Spur Gears
Straight gears / ductively hardened / contact angle 20 degrees
GEAKBH2.0-18-20-B-12N-KC120

Confirmado

Number of Teeth(Teeth)
- 18
Shape
- Shape B
Shaft Bore Dia.(Ø)
- 12
Tooth Width B(mm)
- 20
Hole Shape
- Keyway Hole + Tap
Type
- GEAKBH
CAD
- 2D
- 3D
Dias de envio estimados
- Tudo
- Dentro de 13 dias úteis

Opções adicionais

Set Screw Machining [KC](°)
- 120

Straight gears / ductively hardened / contact angle 20 degrees (GEAKBH2.0-18-20-B-12N-KC120)

CatálogoP. 1-1515

Número da peça:

GEAKBH2.0-18-20-B-12N-KC120

Desenho de contorno e tabela de especificações
Lista de números de peça
Informações detalhadas
Catálogo

Desenho de contorno e tabela de especificações

Dimensional Drawing

Gear Shape

Shape A		Shape B

[NG] Tapped shaft bores are not available for Shape A

No surface treatment
[ ! ] End surface of Shape A may not be surface treated
as Shape A is made by cutting the hub of Shape B.
[ ! ] High-frequency hardening is applied to the tips of the teeth.

Shaft Bore Specifications (Selectable Gear Shapes)
Straight Bore (Shape A, Shape B)	Straight Bore + Tap (Shape B)	Keyway (Shape A)	Keyway + Tap (Shape B)

[!] Relative positioning of keyway and teeth is not fixed.
　　Tooth surface accuracy Equivalent to the new JIS B 1702-1 Class 8
　　(Old JIS B 1702 Class 4)

Keyway Dimensional Tolerance

T Dim. Tolerance (H7)

Nominal	P_H7
8 N to 10K	+0.015 0
11 N to 18 N	+0.018 0
19 N to 30 N	+0.021 0
31 N to 50 N	+0.025 0

[ ! ] Compliant with JIS B 0401-2.

Keyway Dimensional Tolerance

Nominal	b_JS9		t
8 N to 10 N	3	±0.0125	1.4	+0.1 0
10K to 12 N	4	±0.0150	1.8
13 N to 17 N	5		2.3
18 N to 22 N	6		2.8
23 N to 30 N	8	±0.0180	3.3	+0.2 0
31 N to 38 N	10	±0.0180
39 N to 44 N	12	±0.0215
45 N to 50 N	14	±0.0215	3.8

[ ! ] Compliant with JIS B 1301.

Unspecified Dimension Tolerance (Other than the teeth)

Dimension Range		Tolerance (mm)
Over	or Less	Tolerance (mm)
0.5	3	±0.1
3	6	±0.1
6	30	±0.2
30	120	±0.3
120	400	±0.5

[ ! ] Compliant with JIS B 0405 Class m (intermediate).

Type			[M] Material	[S] Surface Treatment	[H] Hardness	[A]Accessory
Straight Bore	Straight Bore + Tap	Keyway, Keyway + Tap
GEAHBH	GEABH	GEAKBH	EN 1.1191 Equiv.	Black Oxide	Tooth Induction Hardened 51 to 55HRC (Depth 1 mm or more)	Set Screw (Cup Point) (EN 1.7220 Equiv. Black Oxide)

[ ! ] A set screw is not included for the shaft bore specification "Straight Bore."
[ ! ] A set screw is included for the shaft hole specification "Tapped."

Tapped Hole Dimensions

Shaft bore diameter P_H7	M (Coarse)	Accessory Set Screw
Shaft bore diameter P_H7	M (Coarse)	Accessory Set Screw
6 to 12	M4	M4 × 3
13 to 17	M5	M5 × 4
18 to 30	M6	M6 × 5
31 to 45	M8	M8 × 6
46 to 56	M10	M10 × 8

Specification Table

Part Number	—	Number of Teeth	—	B	—	Gear Shape	—	P
GEAKBH2.0 GEABH1.0	— —	30 30	— —	20 8	— —	A B	— —	25 N 15

Part Number		Number of Teeth	B	Gear Shape	Shaft Bore Dia. P_H7 (1 mm Increments)		d Reference Circle Dia.	D Addendum Circle Dia.	G Dedendum Circle Dia.	H	L	ℓ₁	ℓ₂	* 1 Allowable Transmission Force (N⋅m) Bending Strength
Type	Module	Number of Teeth	B	Gear Shape	Straight Bore Straight Bore + Tap	Keyway Keyway + Tap	d Reference Circle Dia.	D Addendum Circle Dia.	G Dedendum Circle Dia.	H	L	ℓ₁	ℓ₂	* 1 Allowable Transmission Force (N⋅m) Bending Strength
Straight Bore (Shape A, Shape B) GEAHBH Straight Bore + Tap (Shape B) GEABH Keyway (Shape A) Keyway + Tap (Shape B) GEAKBH	1.0	18	8	A B	6 to 10	—	18	20	15.5	15	18	10	5	4.76
		20			6 to 11	8 N・10 N・10K	20	22	17.5	17				5.57
		22			8 to 14	8 N to 12 N・10K	22	24	19.5	18				6.42
		24					24	26	21.5	20				7.27
		25					25	27	22.5					7.69
		26					26	28	23.5					8.12
		28					28	30	25.5					9.02
		30			10 to 17	10 N to 15 N 10K	30	32	27.5	25				9.87
		32					32	34	29.5					10.79
		35					35	37	32.5					12.13
		36					36	38	33.5					12.52
		40			10 to 21	10 N to 18 N 10K	40	42	37.5	30				13.07
		45					45	47	42.5					15.18
		48					48	50	45.5					16.44
		50			12 to 24	12 N to 18 N	50	52	47.5	35				17.23
		60			12 to 28	12 N to 25 N	60	62	57.5	40				21.50
		70			12 to 28	12 N to 25 N	70	72	67.5	40				25.74
		80			15 to 35	15 N to 30 N	80	82	77.5	50				29.98
		100			15 to 35	15 N to 30 N	100	102	97.5	50				38.72
	1.5	15	15		10 to 12	10 N・10K	22.5	25.5	18.75	18	29	14	7	15.11
		16			10 to 13	10 N・11 N・10K	24	27	20.25	19.5				16.74
		18			10 to 15	10 N to 13 N 10K	27	30	23.25	22				20.08
		20			10 to 16	10 N to 14 N 10K	30	33	26.25	24				23.51
		24			12 to 19	12 N to 17 N	36	39	32.25	28				30.56
		25			12 to 21	12 N to 18 N	37.5	40.5	33.75	30				32.39
		26			12 to 22	12 N to 19 N	39	42	35.25	32				31.16
		28			15 to 25	15 N to 19 N	42	45	38.25	36				34.58
		30			15 to 26	15 N to 23 N	45	48	41.25	38				37.84
		32			15 to 28	15 N to 24 N	48	51	44.25	40				41.03
		35			15 to 29	15 N to 26 N	52.5	55.5	48.75	42				46.51
		36			15 to 31	15 N to 28 N	54	57	50.25	45				48.00
		40			15 to 35	15 N to 31 N	60	63	56.25	50				54.90
		45			18 to 35	18 N to 31 N	67.5	70.5	63.75					63.90
		48			18 to 35	18 N to 31 N	72	75	68.25					69.20
		50			18 to 42	18 N to 38 N	75	78	71.25	60				72.69
		60			20 to 42	20 N to 38 N	90	93	86.25					90.68
		70			20 to 42	20 N to 38 N	105	108	101.25					108.59

[!] Shaft bore diameter 6.35 is available for Straight Bore and Straight Bore + Tap. [NG] Shaft bore diameter 9N is not available for Keyway Bore + Tap.
[ ! ] Specify 10K as P dimension if keyway width of 4.0 mm (height 1.8 mm) for Keyway + Tap with shaft bore diameter of 10 is desired.
*1 Allowable Transmission Forces in the table are reference values calculated with prescribed conditions.
■Module 2.0, 2.5, 3.0

Part Number		Number of Teeth	B	Gear Shape	Shaft Bore Dia. P_H7 (1 mm Increments)		d Reference Circle Dia.	D Addendum Circle Dia.	G Dedendum Circle Dia.	H	L	ℓ₁	ℓ₂	* 1 Allowable Transmission Force (N⋅m) Bending Strength
Type	Module	Number of Teeth	B	Gear Shape	Straight Bore Straight Bore + Tap	Keyway Keyway + Tap	d Reference Circle Dia.	D Addendum Circle Dia.	G Dedendum Circle Dia.	H	L	ℓ₁	ℓ₂	* 1 Allowable Transmission Force (N⋅m) Bending Strength
Straight Bore (Shape A, Shape B) GEAHBH Straight Bore + Tap (Shape B) GEABH Keyway (Shape A) Keyway + Tap (Shape B) GEAKBH	2.0	15	20	A B	12 to 17	12 N to 14 N	30	34	25	24	36	16	8	35.81
		16			12 to 18	12 N to 15 N	32	36	27	26				39.67
		18			12 to 21	12 N to 18 N	36	40	31	30				47.59
		20			15 to 22	15 N to 19 N	40	44	35	32				50.67
		22			15 to 22	15 N to 19 N	44	48	39	36				58.24
		24			15 to 26	15 N to 23 N	48	52	43	38				65.86
		25			15 to 28	15 N to 24 N	50	54	45	40				69.81
		28			15 to 31	15 N to 28 N	56	60	51	45				81.96
		30			18 to 35	18 N to 31 N	60	64	55	50				89.70
		32					64	68	59					97.27
		36					72	76	67					113.78
		40			20 to 42	20 N to 38 N	80	84	75	60				130.13
		45					90	94	85					151.46
		48					96	100	91					164.04
		50			25 to 42	25 N to 38 N	100	104	95					172.31
		60			25 to 45	25 N to 42 N	120	124	115	65				205.60
	2.5	16	25		15 to 22	15 N to 19 N	40	45	33.75	32	43	18	9	70.43
		20			18 to 28	18 N to 24 N	50	55	43.75	40				98.97
		24			18 to 33	18 N to 30 N	60	65	53.75	48				128.63
		25			20 to 35	20 N to 31 N	62.5	67.5	56.25	50				136.34
		28			20 to 42	20 N to 38 N	70	75	63.75	60				160.07
		30			20 to 45	20 N to 42 N	75	80	68.75	65				175.19
		36			20 to 49	20 N to 45 N	90	95	83.75	70				222.23
		40			25 to 49	25 N to 45 N	100	105	93.75	70				254.16
		45			25 to 52	25 N to 49 N	112.5	117.5	106.25	75				295.82
		48			25 to 52	25 N to 49 N	120	125	113.75	75				306.46
		50			25 to 56	25 N to 50 N	125	130	118.75	80				321.92
	3.0	16	30		16 to 26	16 N to 23 N	48	54	40.5	38	50	20	10	121.71
		20			20 to 35	20 N to 31 N	60	66	52.5	50				171.01
		24			20 to 40	20 N to 37 N	72	78	64.5	58				222.27
		25			20 to 42	20 N to 38 N	75	81	67.5	60				235.60
		30			25 to 52	25 N to 49 N	90	96	82.5	75				302.72
		32			25 to 52	25 N to 49 N	96	102	88.5	75				328.27
		36			25 to 56	25 N to 50 N	108	114	100.5	80				384.01
		40			25 to 56	25 N to 50 N	120	126	112.5	80				420.10

*1 Allowable Transmission Forces in the table are reference values calculated with prescribed conditions. [!]The "-" text in the above table means that it is not selectable.

Alterations

Alterations	Set Screw Alteration		Side Through Hole	Side Tapped Hole
Code	KC90	KC120	KFC·KTC	QFC·QTC
Spec.	Adds another set screw at 90° position.　 A set screw is added. [NG] Not applicable to Straight Bore Type	Adds another set screw at 120° position. A set screw is added. [NG] Not applicable to Straight Bore Type	Machines through holes on the side surface. (KFC, KTC: 1 mm Increments, K: 0.5 mm Increments) [ ! ] Applicable only to Shape A [ ! ] P + K + 4 ≤ KFC (KTC) ≤ G - K - 4 Select K K3.0 to K6.0 Ordering Code KFC20 to K3.5	Machines tapped holes on the side surface of the gear. (QFC, QTC: 1 mm Increments) [ ! ] Applicable only to Shape A [ ! ] P + M + 4 ≤ QFC (QTC) ≤ G - M - 4 Select M M3 M4 Ordering Code QFC25-M3 " ! " Tapped Hole Depth M × 1.5 (When B < M × 1.5, through)
Spec.

Lista de números de peça

Número de itens

Número da peça

GEAKBH2.0-18-20-B-12N-KC120

Number of Teeth

(Teeth)

Shape

Shaft Bore Dia.

(Ø)

Tooth Width B

(mm)

Hole Shape

RoHS?

Quantidade mínima de encomenda

Shape B

Keyway Hole + Tap

1 unidades

Preço unitário (excluindo IVA)(Preço unitário incluindo IVA)	Data de envio standard

( - )

Informações detalhadas

Contorno e especificações

Contorno e especificações

General Information - Spur Gears

Spur gears - front gear with through hole - spur gear with spring pin - spur gear made of brass - brass pinion - plastic - spur gear with ball bearing

Selection details of spur gears

- Material: steel, stainless steel, sintered steel, nylon, polyacetal, brass, aluminum, cast iron

- Coatings: burnished, nickel-plated

- Heat treatment: induction hardened

- Shaft diameter tolerances: H7, H8

- Tooth flank clearance: N5, N7, N8, N9, N12

- Module: 0.3, 0.5, 0.75, 0.8, 1, 1.25, 1.5, 2, 2.5, 3, 4, 4.5, 5, 6, 8, 10, 15, 20

- Pressure angle: 20°

- Shaft diameter: 2 mm to 50 mm

- Number of teeth: 8 to 200

- Tooth width: 2 mm to 90 mm

Description/Basics

The spur gears offered are generally machine elements that serve the non-slip transmission of force, movement transmission or movement change. The teeth of the cylinder wheels grip each other during transmission and largely roll over the tooth flanks. The tooth shape of the spur gear is convexly shaped in the shaped tooth system. At the beginning of the intervention, a rolling resistance acts on the tooth flank, which becomes a sliding friction in the course of the rotation.

A combination of gear wheels and rack gears is useful in the construction of rack gear. This allows motor rotary motion or other rotary motion to be converted into linear motion. rack gear boxes are theoretically possible in an endless assembly. Limits here only set the length of the rack gears for the rack gear drive.

Gear wheels with straight gearing are particularly suitable for the construction of gearboxes. The advantage of straight gearing as opposed to helical gears, is the possibility of transmitting a higher torque. It should be noted that with increasing speed within the transmission ratio or reduction, the torque to be transmitted decreases.

When designing spur gear pairs, the ratio of the gear ratio (number of teeth) and the module of the respective gear wheels must be observed.
The backlash is another important factor that must be considered during construction. Reverse play is understood as the result of the play that the change in the direction of rotation of a single gear wheel pair between the teeth. The risk of reverse play can be reduced if either the diameter or the number of teeth of the cogwheel pairing do not deviate too much from one another. If high wear is to be expected due to the pairing of gears, the MISUMI online shop offers gears with a hardened key-type.

For applications with the same rotational direction, it is possible to use an intermediate gear with integrated bearing on a cantilever shaft. The bearing number used can be found under the tab More Information. An overview of tolerances and permissible radial bearing deviations can be found in the following PDF.

In addition to gear wheels, MISUMI also offers suitable rotary shafts for the construction of a transmission. The straight front wheels can be assembled on these and secured with a set screw or machine keys (key with adjusting screw). This PDF provides an overview of the configurable mountings for the shaft rotation and keyway tolerances.
The continuous adjusting of a spur gear can be realized, among other things, by means of a clamping sleeve. The MISUMI online shop offers spur gears with clamping sleeve. Alternatively, we also offer individual keyless bushing that you can customize to your needs.