Square Rack, Pressure Angle 20°, Length Fixed

Brand :

MISUMI

Caution

Product Description

Product Overview

Rack is often used together with gears and is a type of mechanical component used for transmission. Allows rotational displacement to be transmitted linearly, and linear displacement to be transmitted rotationally.
Gear rack drive mechanisms can be used in elevators, rail systems, automotive steering systems, machine tools, and actuator feed mechanisms, among other fields.

Dimensional Drawing

■ Fixed Hole Type	■ Hole position configurable
	A+B+C ≤ L-5 Maximum number of holes: 3

Metal: L size tolerance (mm)

Accuracy: Cumulative Pitch Error (Unit: µm)

Module	P Tolerance
0.5 to 2.0	-0.1 -0.3
2.5 to 3.0	-0.1 -0.4

Module	L tolerance
0.5 to 2.0	-0.2 to -0.6
2.5 to 3.0	-0.2 to -0.8

Module	Nominal model
Module	100	300	500	1000
0.5 to 1.5	54(76)	65(92)	72(101)	100(117)
2.0 to 3.0	62(86)	73(102)	80(112)	81(128)

( ) indicates the corresponding dimensions for E-RGSAS·E-SRGSAS

Material Table

Type		Material	Surface Treatment
Fixed hole position	Designated hole position type	Material	Surface Treatment
E-RGSA	E-SRGSA	Steel	Black Oxide Film
E-RGSAS	E-SRGSAS	Stainless Steel	-

Both ends of this series are machined. Please pay attention when selecting.

The hole machining surface is not surface treated. Please note.

This series of products is not heat treated. If needed, please select the high-frequency quenching series products.

If rust prevention is required, please prioritize stainless steel products. For details, please refer to Rust Prevention Performance and Maintenance of Metal Materials and Their Surface Treatments.

For the electronic catalog, please click here to get it

Alteration

Alterations	Additional female thread machining on one end face	Additional female thread machining on both ends
Code	MC	WMC
Spec.

Specification Table

● Specification Table
●Fixed Hole Type

Part Number				Effective Number of Teeth	Total length L	P (Pitch)	W	H	h	B (Hole Pitch)	M (Coarse Thread)	d1	d2	Z1	K (Number of Holes)
Type	Module	Nominal model	Hole machining
E-RGSA (Steel) E-RGSAS (Stainless Steel)	1.0	100	N (No hole machining) HT (Reverse Side Threaded Hole) ST (Side Threaded Hole) Z (Side Counterbore)	30	94.25	3.142	17 (10)	17 (10)	16 (9)	180	M3	3.5	6.5	3.5	-
		300		95	298.45										2
		500		159	499.51										3
		1000		318	999.02										6
	1.5	100		21	98.96	4.712	17 (15)	17 (15)	15.5 (13.5)		M4	4.5	8	4.5	-
		300		63	296.88										2
		500		106	499.51										3
		1000		212	999.02										6
	2.0	100		15	94.25	6.283	24 (20)	24 (20)	22 (18)		M5	5.5	9.5	5.5	-
		300		47	295.31										2
		500		79	496.37										3
		1000		159	999.02										6
	2.5	100		12	94.25	7.854	24 (25)	24 (25)	21.5 (22.5)		M5	5.5	9.5	5.5	-
		300		38	298.45										2
		500		63	494.8										3
		1000		127	997.4										6
	3.0	100		10	94.25	9.425	29 (30)	29 (30)	26 (27)		M5	5.5	9.5	5.5	-
		300		31	292.17										2
		500		53	499.51										3
		1000		106	999.02										6

For stainless steel material, please refer to the dimensions in ( )

● Hole Position Specification Type

Part Number				Hole positions A, B, C can be specified down to 1 mm increments	Effective Number of Teeth	Total length L	P (Pitch)	W	H	h	M (Coarse Thread)	d1	d2	Z1
Type	Module	Nominal model	Hole machining
E-SRGSA (Steel) E-SRGSAS (Stainless Steel)	1.0	100	HT (Reverse Side Threaded Hole) ST (Side Threaded Hole) Z (Side Counterbore)	5 to 89	30	94.25	3.142	17 (10)	17 (10)	16 (9)	M3	3.5	6.5	3.5
		300		5 to 293	95	298.45
		500		5 to 494	159	499.51
		1000		5 to 994	318	999.02
	1.5	100		5 to 93	21	98.96	4.712	17 (15)	17 (15)	15.5 (13.5)	M4	4.5	8	4.5
		300		5 to 291	63	296.88
		500		5 to 494	106	499.51
		1000		5 to 994	212	999.02
	2.0	100		6 to 88	15	94.25	6.283	24 (20)	24 (20)	22 (18)	M5	5.5	9.5	5.5
		300		6 to 289	47	295.31
		500		6 to 490	79	496.37
		1000		6 to 993	159	999.02
	2.5	100		6 to 88	12	94.25	7.854	24 (25)	24 (25)	21.5 (22.5)	M5	5.5	9.5	5.5
		300		6 to 292	38	298.45
		500		6 to 488	63	494.8
		1000		6 to 991	127	997.4
	3.0	100		6 to 88	10	94.25	9.425	29 (30)	29 (30)	26 (27)	M5	5.5	9.5	5.5
		300		6 to 292	31	292.17
		500		6 to 488	53	499.51
		1000		6 to 991	106	999.02

Both ends of this product series are machined. Please pay attention when selecting.

For stainless steel material, please refer to the dimensions in parentheses.

Product Features

Feature 1: Can be converted between rotary motion and linear motion.
Feature 2: Selectable length and mounting hole processing method.
Feature 3: You can choose between standard steel and stainless steel racks according to actual operating requirements.
Feature 4: The hole machining method can be freely selected: no hole machining, back side tapped hole machining, side counterbore machining, or side tapped hole machining.
Feature 5: Optimized cross-sectional shape, better suited for domestic usage environments

Usage Method

■ Linear Motion: Rack and Pinion Drive

Bracket Micro Gear Type Slide Table Assembly
Case 1: Linear Motion Using Gear and Rack Drive

Positioning Mechanism for Basic Frame
Case 2: Linear Motion Using Gear and Rack Drive

Precautions

■ Cutting Method for Rack End Face


Cut according to the length of the effective number of teeth (tooth root)	Cut from the reference surface to the specified length, excluding the teeth.

■ Rack Connection Method
The end face machining accuracy of MISUMI racks is less than the pitch.
Therefore, please leave a gap between the two racks as shown in the diagram below, and connect them after adjusting the pitch using a combination rack (racks with the same module).
Rack Connection Method Instructions

Example of Use

Reference Cases for Gear and Rack Combination

Equipment Name: n-speed Mechanism

Feature 1:	The use of fixed and movable racks in combination with large and small gears doubles the cylinder stroke distance.
Feature 2:	After setting the ratio of the small gear to the large gear to 1:n, the stroke can be converted to n times.
Feature 3:	By placing the moving base side gear on the centerline of the cylinder and symmetrically arranging the fixed rack side gears on both sides, force deviation can be eliminated.
Feature 4:	Install the lower rack (custom-sized holes) or add/remove shims to adjust the position of the rack and pinion.

For more information, please click

n-times speed mechanism

Application Industries

Food	Semiconductor	Smart phone

Medical	Electronic & Electrical Appliances	Lithium battery

Economy Spur Gear Pressure Angle 20° Module 1.5	Economy Spur Gear Pressure Angle 20° Module 2.0	Economy Rack, High-Frequency Quenching / Square Cross-Section / Fixed L Size / Pressure Angle 20°
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