Square Rack, Pressure Angle 20°, Length Configurable

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

■ Hole position configurable	■ Number of holes configurable

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)	91(128)

( ) indicates the corresponding dimensions for E-RGSASL and E-LRGSAS

Material Table

Type		Material	Surface Treatment
Designated hole position type	Designated number of holes type	Material	Surface Treatment
E-RGSAL	E-LRGSA	Steel	Black Oxide Film
E-RGSASL	E-LRGSAS	Stainless Steel	-

This product series is processed on one end only. Please pay attention when selecting.

The cut surface and hole-machined surface are 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
● Hole Position Specification Type

Part Number			Overall length L can be specified down to 1 mm increments	Hole position ABCD can be specified down to 1 mm increments	P (Pitch)	W	H	h	M (Coarse Thread)	d1	d2	Z1
Part Number
Type	Module	Hole machining
E-RGSAL E-RGSASL	1.0	N(No hole machining) HT(Back side threaded hole) ST(Side threaded hole) Z(Side counterbore)	20 to 980	5 to 975	3.142	17 (10)	17 (10)	16 (9)	M3	3.5	6.5 (6)	3.5
	1.5			5 to 975	4.712	17 (15)	17 (15)	15.5 (13.5)	M4	4.5	8	4.5
	2.0			6 to 974	6.283	24 (20)	24 (20)	22 (18)	M5	5.5	9.5	5.5
	2.5				7.854	24 (25)	24 (25)	21.5 (22.5)	M5	5.5	9.5	5.5
	3.0				9.425	29 (30)	29 (30)	26 (27)	M5	5.5	9.5	5.5

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

● Designated number of holes type

Part Number			Total Length L Specify 1 mm	K (Number of Holes)	Hole Pitch B can be specified down to 1 mm increments	P (Pitch)	W	H	h	M (Coarse Thread)	d1	d2	Z1
Part Number
Type	Module	Hole machining
E-LRGSA E-LRGSAS	1.0	HT(Back Threaded Hole) ST(Side Threaded Hole) Z(Side Counterbore)	20 to 980	2 to 12	50 to 500	3.142	17 (10)	17 (10)	16 (9)	M3	3.5	6.5 (6)	3.5
	1.5					4.712	17 (15)	17 (15)	15.5 (13.5)	M4	4.5	8	4.5
	2.0					6.283	24 (20)	24 (20)	22 (18)	M5	5.5	9.5	5.5
	2.5					7.854	24 (25)	24 (25)	21.5 (22.5)	M5	5.5	9.5	5.5
	3.0					9.425	29 (30)	29 (30)	26 (27)	M5	5.5	9.5	5.5

This product series is processed on one end only. 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: Length and mounting hole processing method can be specified.
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 Type Rack, High-Frequency Quenching / Square Cross-Section / L Dimension Specified / Pressure Angle 20°
		Page under construction