Spur Gear, Pressure Angle 20°, Module 1.5

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 1.5 Dimension Diagram

Threading of shaft holes is not possible for Shape A

Spur Gear Pressure Angle 20° Module 1.5 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 or 13 teeth will be K type, and gears with 14 to 120 teeth will be B type.

Material Table

Type			Material	Surface Treatment
Straight Round Hole	Straight Round Hole+Tapped Hole	Keyway Hole Keyway Hole + Tapped Hole	Material	Surface Treatment
E-GEAHB	E-GEAB	E-GEAKB	General structural steel or carbon steel	-
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	-

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

If the gear shape is not specified, gears with 12 or 13 teeth will be K shape, and gears with 14 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.

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

Specification Table

Part Number		Number of Teeth	B	Gear Shape	Shaft Hole Diameter P_H₈ 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 Transmittable 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)	General structural steel or carbon steel	Stainless Steel
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) Keyway Hole + Tapped Hole (Shape B) E-GEAKB E-GEAKBB E-GEAKBG E-GEAKS	1.5	12	15	A K	6 to 12·6.35	8N	18	21	14.25	21	30	15	4	M4	8.33	4.76
		13		A K	6 to 13·6.35		19.5	22.5	15.75	22.5	30	15			9.55	5.45
		14		A B	6 to 8·6.35		21	24	17.25	16	24	9			10.79	6.16
		*15			6 to 12·6.35	8N·10N to 12N	22.5	25.5	18.75	18					12.09	－
		16			6 to 12·6.35		24	27	20.25	20					13.39	7.64
		17			6 to 12·6.35		25.5	28.5	21.75	21					9.81	5.6
		18			6 to 13·6.35		27	30	23.25	22	27	12	5		16.06	9.17
		19			6 to 15·6.35		28.5	31.5	24.75	24					17.41	9.94
		20			6 to 16·6.35		30	33	26.25	25					18.81	10.74
		21			6 to 16·6.35		31.5	34.5	27.75	25					13.45	7.68
		22			6 to 17·6.35		33	36	29.25	26					21.63	12.34
		23			6 to 18·6.35	8N·10N to 13N	34.5	37.5	30.75	27					15.33	8.75
		24			6 to 20·6.35	8N·10N to 15N	36	39	32.25	30					24.45	13.95
		25			6 to 20·6.35	8N·10N to 15N	37.5	40.5	33.75	30				M5	25.92	14.79
		26			6 to 22·6.35	8N·10N to 17N	39	42	35.25	32					27.42	15.65
		27			6 to 23·6.35	8N·10N to 19N	40.5	43.5	36.75	34					19.17	10.94
		28			6 to 23·6.35		42	45	38.25	34					30.43	17.36
		29			6 to 24·6.35		43.5	46.5	39.75	35					21.12	12.05
		30			6 to 24·6.35		45	48	41.25	35					33.3	19
		*32			6 to 28·6.35	8N·10N to 24N	48	51	44.25	40					36.11	－
		33					49.5	52.5	45.75						25.07	14.31
		34					51	54	47.25						39.45	22.51
		35					52.5	55.5	48.75						40.93	23.35
		36					54	57	50.25						42.24	24.1
		38			6 to 24·6.35	8N·10N to 30N	57	60	53.25	45					30.1	17.17
		39			6 to 24·6.35	8N·10N to 30N	58.5	61.5	54.75						31.11	17.75
		40			8 to 33	10N to 30N	60	63	56.25						48.31	27.57
		42					63	66	59.25						51.43	29.35
		44					66	69	62.25						36.21	20.66
		45					67.5	70.5	63.75						56.23	32.09
		46					69	72	65.25						38.26	21.83
		48			8 to 38	10N to 33N	72	75	68.25	50					60.9	34.75
		49					73.5	76.5	69.75						41.35	23.6
		50					75	78	71.25					M6	63.97	36.51
		51					76.5	79.5	72.75						43.41	24.77
		52					78	81	74.25						67.07	38.28
		54			12 to 38	12N to 33N	81	84	77.25						46.52	26.55
		55					82.5	85.5	78.75						47.57	27.15
		56					84	87	80.25						48.62	27.75
		57					85.5	88.5	81.75						49.65	28.33
		58					87	90	83.25						50.69	28.93
		60			12 to 43	12N to 37N	90	93	86.25	55					79.8	45.54
		62					93	96	89.25						54.89	31.32
		63					94.5	97.5	90.75						55.92	31.91
		64					96	99	92.25						56.99	32.52
		65					97.5	100.5	93.75						58.03	33.11
		66					99	102	95.25						59.07	33.71
		68					102	105	98.25						61.17	34.91
		69					103.5	106.5	99.75						62.23	35.51
		70			12 to 50	12N to 44N	105	108	101.25	65					95.56	54.53
		72					108	111	104.25						98.5	56.21
		75					112.5	115.5	108.75						68.56	39.12
		76					114	117	110.25						69.61	39.72
		77					115.5	118.5	111.75						70.68	40.33
		78					117	120	113.25						71.73	40.93
		*80					120	123	116.25						111.3	－
		81					121.5	124.5	117.75						74.89	42.74
		84					126	129	122.25						78.07	44.55
		85					127.5	130.5	123.75						79.14	45.16
		88					132	135	128.25						82.35	46.99
		90					135	138	131.25						84.45	48.19
		91					136.5	139.5	132.75						85.53	48.81
		92					138	141	134.25						86.57	49.41
		95					142.5	145.5	138.75						89.78	51.23
96	144	147	140.25				90.87	51.85
98	147	150	143.25				92.97	53.05
99	148.5	151.5	144.75	94.05			53.67
100	150	153	146.25	95.11			54.27

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

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