Spur Gear, Pressure Angle 20°, Module 1.0

Brand :

MISUMI

Caution

Product Description

Product Overview

A gear is a product with teeth added around the circumference of a drive wheel. Gear transmission mechanisms are widely used for transmitting rotational motion, rotational speed, and rotational direction.

Dimensional Drawing

MISUMI Spur Gear Pressure Angle 20° Module 1.0 Dimension Specification Diagram

When selecting the shaft hole specification without threads, the fixing screws are not included.

The selectable gear shapes vary depending on the number of teeth. Please check the specification table.

Spur Gear Pressure Angle 20° Module 1.0 Dimension Diagram

Please click

Detailed Dimensions of Keyway.

The position relationship between the keyway and the teeth is not fixed.

If the gear shape is not specified, gears with 12–18 teeth will be K shape, and gears with 19–120 teeth will be B shape.

Material Table

Type			Material	Surface Treatment	Accessories
Straight Round Hole	Straight Round Hole+Tapped Hole	Keyway Hole Keyway Hole + Tapped Hole	Material	Surface Treatment	Accessories
E-GEAHB	E-GEAB	E-GEAKB	General structural steel or carbon steel	-	Set Screw (SCM435·Black Oxide Coating)
E-GEAHBB	E-GEABB	E-GEAKBB		Black Oxide Film
E-GEAHBG	E-GEABG	E-GEAKBG		Electroless Nickel Plating
E-GEAHS	E-GEAS	E-GEAKS	Stainless steel	-	Set Screw (Equivalent to SUS304)

If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating or those made of stainless steel.

Please refer to

Surface Treatment and Rust Prevention Methods

If the gear shape is not specified, gears with 12 to 18 teeth will be K shape, and gears with 19 to 120 teeth will be B shape.
If there are requirements for rust prevention, give priority to products with hard chrome plating, electroless nickel plating surface treatment, or stainless steel SUS3 series materials.

Specification Table

■ Standard Dimension Specification Table

Part Number		Number of Teeth	B	Gear Shape	Shaft Hole Diameter P_H7 Specified Unit: 1 mm		d Reference Circle Diameter	D Tip Circle Diameter	G Root Circle Diameter	H	L	ℓ₁	ℓ₂	M (Coarse Thread)	*1 Allowable Transmission Force (N⋅m) Bending Strength
Type	Module	Number of Teeth	B	Gear Shape	Straight Round Hole Straight Round Hole+Tapped Hole	Keyway Hole Keyway Hole +Tapped Hole	d Reference Circle Diameter	D Tip Circle Diameter	G Root Circle Diameter	H	L	ℓ₁	ℓ₂	M (Coarse Thread)	Equivalent to S45C	Equivalent to SUS304
(Selectable Gear Shape)	1.0	12	10 12	K	6 to 8	-	12	14	9.5	14	30	20 (B=10) 18 (B = 12)	5	M4	2.47	1.41
		*13		K	6 to 10		13	15	10.5	15				M4	2.83	-
		14		A K			14	16	11.5	16				M5	3.20	1.83
Straight round hole (Shape A·Shape B·Shape K) E-GEAHB E-GEAHBB E-GEAHBG E-GEAHS Straight round hole+Tapped Hole (Shape B · Shape K) E-GEAB E-GEABB E-GEABG E-GEAS Keyway hole (Shape A) (19 teeth or more) Keyway Hole + Tapped Hole (Shape B) (19 teeth or more) E-GEAKB E-GEAKBB E-GEAKBG E-GEAKS		15					15	17	12.5	17					3.58	2.04
		*16			6 to 12		16	18	13.5	18					3.97	-
		*17					17	19	14.5	19					4.36	-
		*18					18	20	15.5	20			4	M4	4.76	-
		*19		A B	6 to 10	8N	19	21	16.5	16	20	10 (B=10) 8 (B = 12)			5.16	-
		20			6 to 10	8N	20	22	17.5	16					5.57	3.18
		21			6 to 12	8N·10N	21	23	18.5	18					5.98	3.41
		*22					22	24	19.5	18					6.41	-
		*23					23	25	20.5	20					6.82	-
		24					24	26	21.5						7.24	4.13
		*25					25	27	22.5						7.68	-
		26			6 to 15	8N to 12N	26	28	23.5	22					8.12	4.64
		*27			6 to 15	8N to 12N	27	29	24.5	24					8.55	-
		28			8 to 17	10N to 12N	28	30	25.5	24					9.02	5.14
		*29			6~17	8N to 15N	29	31	26.5	26					9.42	-
		30			8 to 18	10N to 15N	30	32	27.5	27			5	M5	9.87	5.63
		32	10				32	34	29.5	28		10			10.70	6.11
		*34					34	36	31.5	28					11.69	-
		35			8 to 22	10N to 17N	35	37	32.5	30					12.13	6.92
		36					36	38	33.5						12.52	7.14
		38					38	40	35.5						13.46	7.68
		40					40	42	37.5						14.31	8.17
		42					42	44	39.5						15.24	8.70
		*44					44	46	41.5						16.18	-
		45					45	47	42.5						16.66	9.51
		*46					46	48	43.5						17.14	-
		48			8 to 32	10N to 30N	48	50	45.5	44					18.04	10.30
		50			8 to 34	10N to 32N	50	52	47.5	46					18.95	10.82
		52					52	54	49.5						19.87	11.34
		54					54	56	51.5						20.80	11.87
		55					55	57	52.5						21.32	12.16
		56					56	58	53.5						21.84	12.46
		58					58	60	55.5						22.69	12.95
		60			10 to 38	12N to 36N	60	62	57.5	50					23.64	13.49
		62					62	64	59.5						24.50	13.98
		64					64	66	61.5						25.47	14.54
		65					65	67	62.5						25.90	14.78
		66					66	68	63.5						26.45	15.10
		68					68	70	65.5						27.44	15.66
		70			10 to 44	12N to 42N	70	72	67.5	56					28.31	16.16
		72					72	74	69.5						29.19	16.66
		75					75	77	72.5						30.63	17.48
		80			10 to 48	12N to 46N	80	82	77.5	60					32.98	18.82
		84				15N to 38N	84	86	81.5						34.90	19.92
		85					85	87	82.5						35.35	20.17
		90					90	92	87.5						37.74	21.53
		95					95	97	92.5						40.15	22.91
		96					96	98	93.5						40.60	23.17
		100			17 to 42	17N to 38N	100	102	97.5						42.59	24.31
		110			17 to 49	17N to 45N	110	112	107.5	70					47.11	26.88
		120			17 to 49	17N to 45N	120	122	117.5	70					51.87	29.60

When selecting a shaft hole diameter of 10 with keyway hole + tapped hole and a keyway width of 4.0 mm (height 1.8 mm), please specify the P dimension as 10K. For details, please refer to Keyway Specifications

*1 The allowable transmission force in the table is a reference value calculated under normal conditions. For details, please refer to Gear Transmission Power Calculation

There are no corresponding gear products for the tooth numbers marked with * in E-GEAHS and E-GEAKS

When both keyway hole and tapped hole are required, the shaft hole diameter 9N specification cannot be manufactured.

For straight round holes or straight round holes with tapped holes, a shaft hole diameter of 6.35 can be selected.

Product Features

Feature 1: Feature 2: Feature 3: Feature 4:	Spur gears can transmit large amounts of power with a stable instantaneous transmission ratio, making them suitable for high-torque transmission and conveying. Spur gears have a fixed center distance and long service life, making them ideal for compact and highly reliable mechanisms. MISUMI brand ground spur gears feature high-precision tooth profiles, with accuracy grade JIS B 1702-1 Grade 8; shaft hole diameter tolerance is H8. Characteristics of Gear Mechanisms
	Advantages: (1) No transmission delay, not prone to skipping or slipping teeth (2) Relatively free change of transmission direction (3) Relatively free adjustment of transmission speed (4) Suitable for high-power transmission, as well as high-load and high-torque transmission (5) Less affected by temperature, humidity, or oily environments (6) Suitable for compact space designs	Disadvantages: (1) Prone to noise (2) Lubricating oil required for maintenance (3) Safety protection devices required

Usage Method

■ Intended Use for Spur Gears

Type of Transmission	Description	Transmission Diagram (Simple)	Representative Transmission Methods	Representative Types of Transmission Pairings
Parallel Transmission	Parallel transmission of rotation/power between two axes with meshing gears			Spur Gear + Spur Gear Helical Gear + Helical Gear Herringbone Gear + Herringbone Gear Spur Gear + Internal Gear Helical Gear + Internal Helical Gear
Linear Transmission	Rotational displacement/power transmitted linearly, or linear displacement/power transmitted rotationally			Spur Gear + Spur Rack Helical Gear + Helical Rack

Precautions

①	If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating or those made of stainless steel. Please refer to Surface Treatment and Rust Prevention Methods
②	When used together, gears will have backlash. The gear positions need to be adjusted according to the on-site assembly conditions to achieve optimal performance.
③	When selecting the shaft hole specification without threads, the fixing screws are not included.
④	The position relationship between the keyway and the teeth is not fixed.

Example of Use

■Organization Name
Double Speed Double Stroke Mechanism

■ Mechanism Function
1. After the cylinder extends, the spur gear rotates and extends above the fixed rack.
After it rotates, the rack on the moving side extends.

■Function of Spur Gears
1. By clamping the pinion between the fixed rack and the moving rack, you can obtain the cylinder stroke plus the rotational circumference of the gear on the fixed rack, effectively doubling the movement distance of the cylinder stroke.

For detailed information, click Double Speed Double Stroke Mechanism.

Application Industries

Smart phone	Medical	Electronic & Electrical Appliances

Automotive	Robotics	Lithium battery

(Economy series) Spur gear Module 1.0	Spur Gear, Custom Gear Width & Hub Size, Pressure Angle 20°	High-Frequency Quenched Rack, Gear Teeth Grinding Type

Representative Model: C-GEAKBB1.0-36-10-B-15N	Representative Model: GEFHB1.0-30-8-15-W10-H26	Representative Model: RGEAH1.0-500-A
Advantages: Nitriding treatment, high cost performance	Advantage: custom size	Advantages: High tooth surface hardness, length can be extended